./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 16:00:26,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:00:26,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:00:26,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:00:26,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:00:26,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:00:26,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:00:26,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:00:26,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:00:26,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:00:26,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:00:26,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:00:26,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:00:26,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:00:26,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:00:26,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:00:26,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:00:26,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:00:26,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:00:26,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:00:26,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:00:26,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:00:26,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:00:26,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:00:26,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:00:26,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:00:26,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:00:26,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:00:26,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:00:26,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:00:26,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:00:26,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:00:26,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:00:26,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:00:26,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:00:26,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:00:26,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:00:26,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:00:26,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:00:26,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:00:26,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:00:26,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 16:00:26,633 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:00:26,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:00:26,634 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:00:26,635 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:00:26,635 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:00:26,636 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:00:26,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:00:26,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:00:26,637 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:00:26,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:00:26,638 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:00:26,638 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 16:00:26,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:00:26,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:00:26,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:00:26,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:00:26,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:00:26,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:00:26,639 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 16:00:26,639 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:00:26,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:00:26,640 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:00:26,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:00:26,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:00:26,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:00:26,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:00:26,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:00:26,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:00:26,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:00:26,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:00:26,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:00:26,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:00:26,642 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:00:26,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:00:26,642 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:00:26,643 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:00:26,643 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:00:26,643 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 16:00:26,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:00:26,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:00:26,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:00:26,986 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:00:26,987 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:00:26,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2023-08-30 16:00:28,225 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:00:28,496 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:00:28,497 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2023-08-30 16:00:28,513 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55479d7c5/637a20e25f794126a71129fcf67b6d22/FLAG2e06b9987 [2023-08-30 16:00:28,524 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55479d7c5/637a20e25f794126a71129fcf67b6d22 [2023-08-30 16:00:28,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:00:28,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:00:28,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:00:28,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:00:28,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:00:28,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:00:28" (1/1) ... [2023-08-30 16:00:28,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13b8d6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:00:28, skipping insertion in model container [2023-08-30 16:00:28,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:00:28" (1/1) ... [2023-08-30 16:00:28,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:00:28,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:00:28,877 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-deagle/circular_buffer_ok.i[30451,30464] [2023-08-30 16:00:28,894 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-deagle/circular_buffer_ok.i[30681,30694] [2023-08-30 16:00:28,901 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-deagle/circular_buffer_ok.i[30979,30992] [2023-08-30 16:00:28,912 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:00:28,926 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:00:28,974 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-deagle/circular_buffer_ok.i[30451,30464] [2023-08-30 16:00:28,975 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-deagle/circular_buffer_ok.i[30681,30694] [2023-08-30 16:00:28,977 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-deagle/circular_buffer_ok.i[30979,30992] [2023-08-30 16:00:28,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:00:29,015 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:00:29,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:00:29 WrapperNode [2023-08-30 16:00:29,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:00:29,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:00:29,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:00:29,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:00:29,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:00:29" (1/1) ... [2023-08-30 16:00:29,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:00:29" (1/1) ... [2023-08-30 16:00:29,055 INFO L138 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2023-08-30 16:00:29,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:00:29,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:00:29,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:00:29,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:00:29,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:00:29" (1/1) ... [2023-08-30 16:00:29,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:00:29" (1/1) ... [2023-08-30 16:00:29,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:00:29" (1/1) ... [2023-08-30 16:00:29,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:00:29" (1/1) ... [2023-08-30 16:00:29,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:00:29" (1/1) ... [2023-08-30 16:00:29,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:00:29" (1/1) ... [2023-08-30 16:00:29,079 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:00:29" (1/1) ... [2023-08-30 16:00:29,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:00:29" (1/1) ... [2023-08-30 16:00:29,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:00:29,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:00:29,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:00:29,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:00:29,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:00:29" (1/1) ... [2023-08-30 16:00:29,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:00:29,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:00:29,114 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) [2023-08-30 16:00:29,137 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 [2023-08-30 16:00:29,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 16:00:29,167 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 16:00:29,168 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 16:00:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 16:00:29,168 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 16:00:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:00:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 16:00:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:00:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:00:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:00:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 16:00:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:00:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:00:29,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:00:29,171 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 16:00:29,336 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:00:29,338 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:00:29,621 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:00:29,631 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:00:29,633 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 16:00:29,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:00:29 BoogieIcfgContainer [2023-08-30 16:00:29,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:00:29,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:00:29,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:00:29,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:00:29,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:00:28" (1/3) ... [2023-08-30 16:00:29,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63de3405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:00:29, skipping insertion in model container [2023-08-30 16:00:29,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:00:29" (2/3) ... [2023-08-30 16:00:29,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63de3405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:00:29, skipping insertion in model container [2023-08-30 16:00:29,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:00:29" (3/3) ... [2023-08-30 16:00:29,646 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2023-08-30 16:00:29,654 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:00:29,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:00:29,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 16:00:29,679 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:00:29,796 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 16:00:29,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 153 transitions, 322 flow [2023-08-30 16:00:29,918 INFO L130 PetriNetUnfolder]: 11/151 cut-off events. [2023-08-30 16:00:29,918 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 16:00:29,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 151 events. 11/151 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 309 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2023-08-30 16:00:29,924 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 153 transitions, 322 flow [2023-08-30 16:00:29,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 142 transitions, 293 flow [2023-08-30 16:00:29,955 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:00:29,974 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 142 transitions, 293 flow [2023-08-30 16:00:29,978 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 142 transitions, 293 flow [2023-08-30 16:00:29,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 142 transitions, 293 flow [2023-08-30 16:00:30,033 INFO L130 PetriNetUnfolder]: 11/142 cut-off events. [2023-08-30 16:00:30,034 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 16:00:30,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 142 events. 11/142 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 292 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2023-08-30 16:00:30,039 INFO L119 LiptonReduction]: Number of co-enabled transitions 4992 [2023-08-30 16:00:34,369 INFO L134 LiptonReduction]: Checked pairs total: 10547 [2023-08-30 16:00:34,370 INFO L136 LiptonReduction]: Total number of compositions: 120 [2023-08-30 16:00:34,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:00:34,387 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=true, 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;@26af41d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:00:34,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-30 16:00:34,392 INFO L130 PetriNetUnfolder]: 2/19 cut-off events. [2023-08-30 16:00:34,392 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 16:00:34,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:34,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:00:34,394 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-30 16:00:34,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:34,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1894329249, now seen corresponding path program 1 times [2023-08-30 16:00:34,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:34,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330991656] [2023-08-30 16:00:34,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:34,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:00:34,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:34,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330991656] [2023-08-30 16:00:34,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330991656] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:00:34,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:00:34,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:00:34,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306692038] [2023-08-30 16:00:34,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:00:34,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:00:34,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:34,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:00:34,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:00:34,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 273 [2023-08-30 16:00:34,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2023-08-30 16:00:34,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:34,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 273 [2023-08-30 16:00:34,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:34,967 INFO L130 PetriNetUnfolder]: 929/1566 cut-off events. [2023-08-30 16:00:34,967 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-30 16:00:34,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3011 conditions, 1566 events. 929/1566 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8039 event pairs, 406 based on Foata normal form. 38/1180 useless extension candidates. Maximal degree in co-relation 2880. Up to 866 conditions per place. [2023-08-30 16:00:34,978 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 56 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-30 16:00:34,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 63 transitions, 254 flow [2023-08-30 16:00:34,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:00:34,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:00:34,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2023-08-30 16:00:34,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5787545787545788 [2023-08-30 16:00:34,992 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2023-08-30 16:00:34,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2023-08-30 16:00:34,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:34,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2023-08-30 16:00:35,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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) [2023-08-30 16:00:35,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 16:00:35,005 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 16:00:35,006 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 87 flow. Second operand 3 states and 474 transitions. [2023-08-30 16:00:35,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 63 transitions, 254 flow [2023-08-30 16:00:35,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 63 transitions, 248 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 16:00:35,011 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 96 flow [2023-08-30 16:00:35,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2023-08-30 16:00:35,015 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2023-08-30 16:00:35,016 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 96 flow [2023-08-30 16:00:35,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2023-08-30 16:00:35,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:35,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:00:35,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:00:35,017 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-30 16:00:35,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:35,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1386221657, now seen corresponding path program 1 times [2023-08-30 16:00:35,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:35,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619704329] [2023-08-30 16:00:35,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:35,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:00:35,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:35,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619704329] [2023-08-30 16:00:35,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619704329] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:00:35,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:00:35,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:00:35,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945523235] [2023-08-30 16:00:35,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:00:35,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:00:35,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:35,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:00:35,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:00:35,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 273 [2023-08-30 16:00:35,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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) [2023-08-30 16:00:35,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:35,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 273 [2023-08-30 16:00:35,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:35,370 INFO L130 PetriNetUnfolder]: 1525/2496 cut-off events. [2023-08-30 16:00:35,370 INFO L131 PetriNetUnfolder]: For 288/288 co-relation queries the response was YES. [2023-08-30 16:00:35,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5169 conditions, 2496 events. 1525/2496 cut-off events. For 288/288 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12913 event pairs, 699 based on Foata normal form. 0/1878 useless extension candidates. Maximal degree in co-relation 4666. Up to 1391 conditions per place. [2023-08-30 16:00:35,384 INFO L137 encePairwiseOnDemand]: 268/273 looper letters, 58 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-08-30 16:00:35,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 65 transitions, 283 flow [2023-08-30 16:00:35,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:00:35,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:00:35,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2023-08-30 16:00:35,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763125763125763 [2023-08-30 16:00:35,387 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2023-08-30 16:00:35,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2023-08-30 16:00:35,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:35,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2023-08-30 16:00:35,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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) [2023-08-30 16:00:35,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 16:00:35,392 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 16:00:35,392 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 96 flow. Second operand 3 states and 472 transitions. [2023-08-30 16:00:35,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 65 transitions, 283 flow [2023-08-30 16:00:35,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 65 transitions, 279 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:00:35,394 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 110 flow [2023-08-30 16:00:35,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2023-08-30 16:00:35,395 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-30 16:00:35,395 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 110 flow [2023-08-30 16:00:35,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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) [2023-08-30 16:00:35,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:35,396 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 16:00:35,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:00:35,396 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-30 16:00:35,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:35,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1076056475, now seen corresponding path program 1 times [2023-08-30 16:00:35,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:35,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629878726] [2023-08-30 16:00:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:35,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:00:35,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:35,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629878726] [2023-08-30 16:00:35,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629878726] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:00:35,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:00:35,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:00:35,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307468324] [2023-08-30 16:00:35,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:00:35,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:00:35,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:35,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:00:35,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:00:35,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 273 [2023-08-30 16:00:35,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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) [2023-08-30 16:00:35,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:35,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 273 [2023-08-30 16:00:35,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:35,721 INFO L130 PetriNetUnfolder]: 1461/2476 cut-off events. [2023-08-30 16:00:35,721 INFO L131 PetriNetUnfolder]: For 349/349 co-relation queries the response was YES. [2023-08-30 16:00:35,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5190 conditions, 2476 events. 1461/2476 cut-off events. For 349/349 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14333 event pairs, 21 based on Foata normal form. 0/1958 useless extension candidates. Maximal degree in co-relation 4980. Up to 2118 conditions per place. [2023-08-30 16:00:35,733 INFO L137 encePairwiseOnDemand]: 271/273 looper letters, 51 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-08-30 16:00:35,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 57 transitions, 262 flow [2023-08-30 16:00:35,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:00:35,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:00:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2023-08-30 16:00:35,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5628815628815629 [2023-08-30 16:00:35,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2023-08-30 16:00:35,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2023-08-30 16:00:35,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:35,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2023-08-30 16:00:35,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 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) [2023-08-30 16:00:35,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 16:00:35,740 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 16:00:35,740 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 110 flow. Second operand 3 states and 461 transitions. [2023-08-30 16:00:35,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 57 transitions, 262 flow [2023-08-30 16:00:35,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 57 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:00:35,743 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 106 flow [2023-08-30 16:00:35,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-08-30 16:00:35,744 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-30 16:00:35,744 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 106 flow [2023-08-30 16:00:35,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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) [2023-08-30 16:00:35,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:35,745 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 16:00:35,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 16:00:35,745 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-30 16:00:35,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:35,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1076056537, now seen corresponding path program 1 times [2023-08-30 16:00:35,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:35,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543789366] [2023-08-30 16:00:35,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:35,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 16:00:35,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:35,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543789366] [2023-08-30 16:00:35,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543789366] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:00:35,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:00:35,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:00:35,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419168799] [2023-08-30 16:00:35,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:00:35,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:00:35,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:35,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:00:35,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:00:35,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 273 [2023-08-30 16:00:35,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2023-08-30 16:00:35,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:35,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 273 [2023-08-30 16:00:35,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:36,060 INFO L130 PetriNetUnfolder]: 1391/2352 cut-off events. [2023-08-30 16:00:36,061 INFO L131 PetriNetUnfolder]: For 388/388 co-relation queries the response was YES. [2023-08-30 16:00:36,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4898 conditions, 2352 events. 1391/2352 cut-off events. For 388/388 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 13542 event pairs, 203 based on Foata normal form. 0/1892 useless extension candidates. Maximal degree in co-relation 3498. Up to 1626 conditions per place. [2023-08-30 16:00:36,072 INFO L137 encePairwiseOnDemand]: 269/273 looper letters, 47 selfloop transitions, 4 changer transitions 1/57 dead transitions. [2023-08-30 16:00:36,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 57 transitions, 258 flow [2023-08-30 16:00:36,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:00:36,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:00:36,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2023-08-30 16:00:36,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5592185592185592 [2023-08-30 16:00:36,075 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2023-08-30 16:00:36,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2023-08-30 16:00:36,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:36,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2023-08-30 16:00:36,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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) [2023-08-30 16:00:36,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 16:00:36,079 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 16:00:36,079 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 106 flow. Second operand 3 states and 458 transitions. [2023-08-30 16:00:36,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 57 transitions, 258 flow [2023-08-30 16:00:36,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 57 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:00:36,081 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 117 flow [2023-08-30 16:00:36,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-08-30 16:00:36,082 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-08-30 16:00:36,082 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 117 flow [2023-08-30 16:00:36,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2023-08-30 16:00:36,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:36,083 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:00:36,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 16:00:36,083 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-30 16:00:36,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:36,083 INFO L85 PathProgramCache]: Analyzing trace with hash 466005372, now seen corresponding path program 1 times [2023-08-30 16:00:36,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:36,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592178976] [2023-08-30 16:00:36,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:36,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:36,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:00:36,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:36,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592178976] [2023-08-30 16:00:36,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592178976] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 16:00:36,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499361824] [2023-08-30 16:00:36,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:36,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 16:00:36,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:00:36,149 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) [2023-08-30 16:00:36,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 16:00:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:36,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 16:00:36,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 16:00:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:00:36,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 16:00:36,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499361824] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:00:36,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 16:00:36,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 16:00:36,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272261785] [2023-08-30 16:00:36,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:00:36,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:00:36,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:36,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:00:36,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:00:36,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 273 [2023-08-30 16:00:36,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 117 flow. Second operand has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 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) [2023-08-30 16:00:36,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:36,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 273 [2023-08-30 16:00:36,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:36,600 INFO L130 PetriNetUnfolder]: 1315/2145 cut-off events. [2023-08-30 16:00:36,600 INFO L131 PetriNetUnfolder]: For 902/902 co-relation queries the response was YES. [2023-08-30 16:00:36,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4867 conditions, 2145 events. 1315/2145 cut-off events. For 902/902 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10383 event pairs, 45 based on Foata normal form. 0/1730 useless extension candidates. Maximal degree in co-relation 4435. Up to 1036 conditions per place. [2023-08-30 16:00:36,614 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 70 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-30 16:00:36,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 77 transitions, 383 flow [2023-08-30 16:00:36,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:00:36,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:00:36,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 615 transitions. [2023-08-30 16:00:36,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5631868131868132 [2023-08-30 16:00:36,617 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 615 transitions. [2023-08-30 16:00:36,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 615 transitions. [2023-08-30 16:00:36,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:36,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 615 transitions. [2023-08-30 16:00:36,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 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) [2023-08-30 16:00:36,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 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) [2023-08-30 16:00:36,622 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 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) [2023-08-30 16:00:36,623 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 117 flow. Second operand 4 states and 615 transitions. [2023-08-30 16:00:36,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 77 transitions, 383 flow [2023-08-30 16:00:36,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 77 transitions, 371 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:00:36,636 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 113 flow [2023-08-30 16:00:36,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-08-30 16:00:36,638 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-08-30 16:00:36,639 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 113 flow [2023-08-30 16:00:36,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 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) [2023-08-30 16:00:36,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:36,640 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:00:36,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 16:00:36,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 16:00:36,845 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-30 16:00:36,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:36,846 INFO L85 PathProgramCache]: Analyzing trace with hash 466005404, now seen corresponding path program 1 times [2023-08-30 16:00:36,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:36,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436937445] [2023-08-30 16:00:36,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:36,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 16:00:36,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:36,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436937445] [2023-08-30 16:00:36,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436937445] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:00:36,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:00:36,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:00:36,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894575608] [2023-08-30 16:00:36,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:00:36,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:00:36,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:36,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:00:36,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:00:36,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 273 [2023-08-30 16:00:36,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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) [2023-08-30 16:00:36,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:36,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 273 [2023-08-30 16:00:36,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:37,090 INFO L130 PetriNetUnfolder]: 1265/2067 cut-off events. [2023-08-30 16:00:37,091 INFO L131 PetriNetUnfolder]: For 765/765 co-relation queries the response was YES. [2023-08-30 16:00:37,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4628 conditions, 2067 events. 1265/2067 cut-off events. For 765/765 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10004 event pairs, 141 based on Foata normal form. 0/1694 useless extension candidates. Maximal degree in co-relation 4253. Up to 1564 conditions per place. [2023-08-30 16:00:37,097 INFO L137 encePairwiseOnDemand]: 269/273 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2023-08-30 16:00:37,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 257 flow [2023-08-30 16:00:37,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:00:37,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:00:37,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-08-30 16:00:37,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5518925518925519 [2023-08-30 16:00:37,100 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-08-30 16:00:37,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-08-30 16:00:37,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:37,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-08-30 16:00:37,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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) [2023-08-30 16:00:37,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 16:00:37,104 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-08-30 16:00:37,104 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 113 flow. Second operand 3 states and 452 transitions. [2023-08-30 16:00:37,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 257 flow [2023-08-30 16:00:37,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 53 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:00:37,106 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-08-30 16:00:37,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-08-30 16:00:37,107 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-08-30 16:00:37,107 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-08-30 16:00:37,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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) [2023-08-30 16:00:37,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-08-30 16:00:37,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 10 remaining) [2023-08-30 16:00:37,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-08-30 16:00:37,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-08-30 16:00:37,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-08-30 16:00:37,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-08-30 16:00:37,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-08-30 16:00:37,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-08-30 16:00:37,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-08-30 16:00:37,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-08-30 16:00:37,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 16:00:37,112 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-30 16:00:37,116 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:00:37,116 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:00:37,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:00:37 BasicIcfg [2023-08-30 16:00:37,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:00:37,119 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:00:37,119 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:00:37,119 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:00:37,120 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:00:29" (3/4) ... [2023-08-30 16:00:37,122 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 16:00:37,126 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-08-30 16:00:37,127 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-08-30 16:00:37,129 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-08-30 16:00:37,130 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-30 16:00:37,130 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 16:00:37,130 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 16:00:37,155 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:00:37,155 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:00:37,156 INFO L158 Benchmark]: Toolchain (without parser) took 8627.39ms. Allocated memory was 62.9MB in the beginning and 163.6MB in the end (delta: 100.7MB). Free memory was 38.6MB in the beginning and 91.7MB in the end (delta: -53.1MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. [2023-08-30 16:00:37,156 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory is still 30.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:00:37,156 INFO L158 Benchmark]: CACSL2BoogieTranslator took 486.66ms. Allocated memory is still 62.9MB. Free memory was 38.4MB in the beginning and 33.2MB in the end (delta: 5.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 16:00:37,158 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.94ms. Allocated memory is still 62.9MB. Free memory was 32.9MB in the beginning and 30.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:00:37,158 INFO L158 Benchmark]: Boogie Preprocessor took 26.51ms. Allocated memory is still 62.9MB. Free memory was 30.7MB in the beginning and 29.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:00:37,158 INFO L158 Benchmark]: RCFGBuilder took 553.18ms. Allocated memory is still 62.9MB. Free memory was 29.0MB in the beginning and 26.8MB in the end (delta: 2.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2023-08-30 16:00:37,158 INFO L158 Benchmark]: TraceAbstraction took 7480.27ms. Allocated memory was 62.9MB in the beginning and 163.6MB in the end (delta: 100.7MB). Free memory was 26.0MB in the beginning and 94.9MB in the end (delta: -68.9MB). Peak memory consumption was 65.4MB. Max. memory is 16.1GB. [2023-08-30 16:00:37,159 INFO L158 Benchmark]: Witness Printer took 36.04ms. Allocated memory is still 163.6MB. Free memory was 94.9MB in the beginning and 91.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:00:37,160 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory is still 30.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 486.66ms. Allocated memory is still 62.9MB. Free memory was 38.4MB in the beginning and 33.2MB in the end (delta: 5.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.94ms. Allocated memory is still 62.9MB. Free memory was 32.9MB in the beginning and 30.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.51ms. Allocated memory is still 62.9MB. Free memory was 30.7MB in the beginning and 29.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 553.18ms. Allocated memory is still 62.9MB. Free memory was 29.0MB in the beginning and 26.8MB in the end (delta: 2.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * TraceAbstraction took 7480.27ms. Allocated memory was 62.9MB in the beginning and 163.6MB in the end (delta: 100.7MB). Free memory was 26.0MB in the beginning and 94.9MB in the end (delta: -68.9MB). Peak memory consumption was 65.4MB. Max. memory is 16.1GB. * Witness Printer took 36.04ms. Allocated memory is still 163.6MB. Free memory was 94.9MB in the beginning and 91.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4s, 138 PlacesBefore, 39 PlacesAfterwards, 142 TransitionsBefore, 39 TransitionsAfterwards, 4992 CoEnabledTransitionPairs, 7 FixpointIterations, 42 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 4 ChoiceCompositions, 120 TotalNumberOfCompositions, 10547 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6790, independent: 6490, independent conditional: 0, independent unconditional: 6490, dependent: 300, dependent conditional: 0, dependent unconditional: 300, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2863, independent: 2821, independent conditional: 0, independent unconditional: 2821, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6790, independent: 3669, independent conditional: 0, independent unconditional: 3669, dependent: 258, dependent conditional: 0, dependent unconditional: 258, unknown: 2863, unknown conditional: 0, unknown unconditional: 2863] , Statistics on independence cache: Total cache size (in pairs): 245, Positive cache size: 227, Positive conditional cache size: 0, Positive unconditional cache size: 227, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 725]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 725]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 743]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 743]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 222 locations, 10 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: 7.3s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 258 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 184 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 537 IncrementalHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 13 mSDtfsCounter, 537 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=4, InterpolantAutomatonStates: 19, 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, 0.4s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 146 SizeOfPredicates, 0 NumberOfNonLiveVariables, 195 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 16/20 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 16:00:37,187 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE