./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/lazy01.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/lazy01.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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 08:11:11,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 08:11:11,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 08:11:11,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 08:11:11,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 08:11:11,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 08:11:11,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 08:11:11,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 08:11:11,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 08:11:11,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 08:11:11,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 08:11:11,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 08:11:11,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 08:11:11,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 08:11:11,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 08:11:11,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 08:11:11,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 08:11:11,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 08:11:11,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 08:11:11,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 08:11:11,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 08:11:11,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 08:11:11,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 08:11:11,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 08:11:11,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 08:11:11,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 08:11:11,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 08:11:11,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 08:11:11,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 08:11:11,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 08:11:11,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 08:11:11,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 08:11:11,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 08:11:11,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 08:11:11,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 08:11:11,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 08:11:11,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 08:11:11,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 08:11:11,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 08:11:11,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 08:11:11,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 08:11:11,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 08:11:11,177 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 08:11:11,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 08:11:11,178 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 08:11:11,178 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 08:11:11,179 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 08:11:11,179 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 08:11:11,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 08:11:11,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 08:11:11,180 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 08:11:11,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 08:11:11,181 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 08:11:11,182 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 08:11:11,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 08:11:11,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 08:11:11,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 08:11:11,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 08:11:11,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 08:11:11,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 08:11:11,183 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 08:11:11,183 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 08:11:11,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 08:11:11,184 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 08:11:11,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 08:11:11,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 08:11:11,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 08:11:11,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 08:11:11,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:11:11,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 08:11:11,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 08:11:11,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 08:11:11,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 08:11:11,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 08:11:11,187 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 08:11:11,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 08:11:11,187 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 08:11:11,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 08:11:11,187 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 08:11:11,188 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 08:11:11,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 08:11:11,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 08:11:11,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 08:11:11,540 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 08:11:11,541 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 08:11:11,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2023-08-30 08:11:12,786 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 08:11:13,052 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 08:11:13,053 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2023-08-30 08:11:13,064 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/825cc8c3b/d9f794b611a849cd936455460622f6cc/FLAG367afd731 [2023-08-30 08:11:13,080 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/825cc8c3b/d9f794b611a849cd936455460622f6cc [2023-08-30 08:11:13,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 08:11:13,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 08:11:13,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 08:11:13,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 08:11:13,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 08:11:13,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:13,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f6e9a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13, skipping insertion in model container [2023-08-30 08:11:13,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:13,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 08:11:13,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 08:11:13,439 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/lazy01.i[31042,31055] [2023-08-30 08:11:13,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:11:13,462 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 08:11:13,510 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/lazy01.i[31042,31055] [2023-08-30 08:11:13,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:11:13,570 INFO L208 MainTranslator]: Completed translation [2023-08-30 08:11:13,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13 WrapperNode [2023-08-30 08:11:13,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 08:11:13,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 08:11:13,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 08:11:13,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 08:11:13,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:13,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:13,636 INFO L138 Inliner]: procedures = 169, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 62 [2023-08-30 08:11:13,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 08:11:13,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 08:11:13,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 08:11:13,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 08:11:13,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:13,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:13,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:13,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:13,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:13,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:13,662 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:13,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:13,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 08:11:13,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 08:11:13,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 08:11:13,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 08:11:13,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (1/1) ... [2023-08-30 08:11:13,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:11:13,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:11:13,694 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 08:11:13,698 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 08:11:13,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 08:11:13,729 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 08:11:13,732 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 08:11:13,732 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 08:11:13,732 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 08:11:13,732 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 08:11:13,732 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 08:11:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 08:11:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 08:11:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 08:11:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 08:11:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 08:11:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 08:11:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 08:11:13,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 08:11:13,735 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 08:11:13,843 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 08:11:13,845 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 08:11:14,079 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 08:11:14,085 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 08:11:14,085 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 08:11:14,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:11:14 BoogieIcfgContainer [2023-08-30 08:11:14,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 08:11:14,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 08:11:14,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 08:11:14,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 08:11:14,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:11:13" (1/3) ... [2023-08-30 08:11:14,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbd5f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:11:14, skipping insertion in model container [2023-08-30 08:11:14,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:13" (2/3) ... [2023-08-30 08:11:14,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbd5f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:11:14, skipping insertion in model container [2023-08-30 08:11:14,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:11:14" (3/3) ... [2023-08-30 08:11:14,094 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2023-08-30 08:11:14,101 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 08:11:14,109 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 08:11:14,110 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 08:11:14,110 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 08:11:14,204 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 08:11:14,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 94 transitions, 212 flow [2023-08-30 08:11:14,287 INFO L130 PetriNetUnfolder]: 1/91 cut-off events. [2023-08-30 08:11:14,289 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 08:11:14,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 1/91 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-08-30 08:11:14,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 94 transitions, 212 flow [2023-08-30 08:11:14,301 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 80 transitions, 175 flow [2023-08-30 08:11:14,305 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:11:14,327 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 80 transitions, 175 flow [2023-08-30 08:11:14,334 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 80 transitions, 175 flow [2023-08-30 08:11:14,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 80 transitions, 175 flow [2023-08-30 08:11:14,365 INFO L130 PetriNetUnfolder]: 1/80 cut-off events. [2023-08-30 08:11:14,366 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:11:14,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 80 events. 1/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-08-30 08:11:14,369 INFO L119 LiptonReduction]: Number of co-enabled transitions 1600 [2023-08-30 08:11:16,706 INFO L134 LiptonReduction]: Checked pairs total: 4982 [2023-08-30 08:11:16,706 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-08-30 08:11:16,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:11:16,725 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;@31278bd0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:11:16,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-30 08:11:16,728 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-30 08:11:16,729 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:11:16,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:16,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 08:11:16,730 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 08:11:16,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:16,735 INFO L85 PathProgramCache]: Analyzing trace with hash 9755910, now seen corresponding path program 1 times [2023-08-30 08:11:16,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:16,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139572249] [2023-08-30 08:11:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:16,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:17,041 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 08:11:17,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:17,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139572249] [2023-08-30 08:11:17,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139572249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:17,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:17,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:11:17,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156961190] [2023-08-30 08:11:17,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:17,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:11:17,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:17,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:11:17,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:11:17,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 152 [2023-08-30 08:11:17,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 08:11:17,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:17,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 152 [2023-08-30 08:11:17,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:17,358 INFO L130 PetriNetUnfolder]: 811/1289 cut-off events. [2023-08-30 08:11:17,358 INFO L131 PetriNetUnfolder]: For 119/119 co-relation queries the response was YES. [2023-08-30 08:11:17,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 1289 events. 811/1289 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5625 event pairs, 307 based on Foata normal form. 94/1231 useless extension candidates. Maximal degree in co-relation 2233. Up to 1041 conditions per place. [2023-08-30 08:11:17,373 INFO L137 encePairwiseOnDemand]: 143/152 looper letters, 33 selfloop transitions, 3 changer transitions 5/42 dead transitions. [2023-08-30 08:11:17,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 187 flow [2023-08-30 08:11:17,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:11:17,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:11:17,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2023-08-30 08:11:17,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6293859649122807 [2023-08-30 08:11:17,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2023-08-30 08:11:17,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2023-08-30 08:11:17,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:17,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2023-08-30 08:11:17,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 08:11:17,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 08:11:17,408 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 08:11:17,409 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 73 flow. Second operand 3 states and 287 transitions. [2023-08-30 08:11:17,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 187 flow [2023-08-30 08:11:17,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 175 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 08:11:17,417 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 76 flow [2023-08-30 08:11:17,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-08-30 08:11:17,423 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2023-08-30 08:11:17,423 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 76 flow [2023-08-30 08:11:17,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 08:11:17,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:17,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:17,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 08:11:17,428 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 08:11:17,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:17,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2108626743, now seen corresponding path program 1 times [2023-08-30 08:11:17,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:17,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769542669] [2023-08-30 08:11:17,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:17,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:17,571 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 08:11:17,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:17,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769542669] [2023-08-30 08:11:17,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769542669] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:17,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:17,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:11:17,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007808055] [2023-08-30 08:11:17,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:17,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:11:17,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:17,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:11:17,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:11:17,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 152 [2023-08-30 08:11:17,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 08:11:17,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:17,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 152 [2023-08-30 08:11:17,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:17,652 INFO L130 PetriNetUnfolder]: 97/268 cut-off events. [2023-08-30 08:11:17,652 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 08:11:17,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 268 events. 97/268 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1271 event pairs, 17 based on Foata normal form. 86/348 useless extension candidates. Maximal degree in co-relation 235. Up to 192 conditions per place. [2023-08-30 08:11:17,654 INFO L137 encePairwiseOnDemand]: 146/152 looper letters, 23 selfloop transitions, 6 changer transitions 1/33 dead transitions. [2023-08-30 08:11:17,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 154 flow [2023-08-30 08:11:17,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:11:17,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:11:17,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2023-08-30 08:11:17,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5855263157894737 [2023-08-30 08:11:17,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2023-08-30 08:11:17,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2023-08-30 08:11:17,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:17,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2023-08-30 08:11:17,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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 08:11:17,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 08:11:17,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 08:11:17,659 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 76 flow. Second operand 3 states and 267 transitions. [2023-08-30 08:11:17,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 154 flow [2023-08-30 08:11:17,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 151 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:11:17,661 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 81 flow [2023-08-30 08:11:17,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2023-08-30 08:11:17,662 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2023-08-30 08:11:17,662 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 81 flow [2023-08-30 08:11:17,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 08:11:17,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:17,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:17,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 08:11:17,663 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 08:11:17,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:17,663 INFO L85 PathProgramCache]: Analyzing trace with hash 2026164426, now seen corresponding path program 1 times [2023-08-30 08:11:17,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:17,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636857203] [2023-08-30 08:11:17,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:17,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:17,741 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 08:11:17,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:17,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636857203] [2023-08-30 08:11:17,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636857203] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:17,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:17,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:11:17,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089372945] [2023-08-30 08:11:17,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:17,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:11:17,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:17,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:11:17,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:11:17,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 152 [2023-08-30 08:11:17,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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 08:11:17,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:17,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 152 [2023-08-30 08:11:17,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:17,871 INFO L130 PetriNetUnfolder]: 93/237 cut-off events. [2023-08-30 08:11:17,871 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2023-08-30 08:11:17,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 237 events. 93/237 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 960 event pairs, 33 based on Foata normal form. 10/246 useless extension candidates. Maximal degree in co-relation 176. Up to 162 conditions per place. [2023-08-30 08:11:17,873 INFO L137 encePairwiseOnDemand]: 146/152 looper letters, 34 selfloop transitions, 4 changer transitions 1/40 dead transitions. [2023-08-30 08:11:17,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 199 flow [2023-08-30 08:11:17,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:11:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:11:17,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 421 transitions. [2023-08-30 08:11:17,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5539473684210526 [2023-08-30 08:11:17,875 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 421 transitions. [2023-08-30 08:11:17,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 421 transitions. [2023-08-30 08:11:17,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:17,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 421 transitions. [2023-08-30 08:11:17,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 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 08:11:17,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 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 08:11:17,879 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 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 08:11:17,879 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 81 flow. Second operand 5 states and 421 transitions. [2023-08-30 08:11:17,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 199 flow [2023-08-30 08:11:17,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 189 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:11:17,881 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 75 flow [2023-08-30 08:11:17,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=75, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2023-08-30 08:11:17,882 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2023-08-30 08:11:17,882 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 75 flow [2023-08-30 08:11:17,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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 08:11:17,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:17,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:17,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 08:11:17,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 08:11:17,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:17,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1732837512, now seen corresponding path program 1 times [2023-08-30 08:11:17,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:17,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786187412] [2023-08-30 08:11:17,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:17,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:18,005 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 08:11:18,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:18,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786187412] [2023-08-30 08:11:18,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786187412] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:18,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:18,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:11:18,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885290370] [2023-08-30 08:11:18,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:18,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:11:18,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:18,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:11:18,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:11:18,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 152 [2023-08-30 08:11:18,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 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 08:11:18,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:18,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 152 [2023-08-30 08:11:18,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:18,113 INFO L130 PetriNetUnfolder]: 81/209 cut-off events. [2023-08-30 08:11:18,113 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 08:11:18,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 209 events. 81/209 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 816 event pairs, 29 based on Foata normal form. 10/218 useless extension candidates. Maximal degree in co-relation 162. Up to 86 conditions per place. [2023-08-30 08:11:18,115 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 20 selfloop transitions, 2 changer transitions 21/44 dead transitions. [2023-08-30 08:11:18,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 215 flow [2023-08-30 08:11:18,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:11:18,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:11:18,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 424 transitions. [2023-08-30 08:11:18,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578947368421052 [2023-08-30 08:11:18,121 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 424 transitions. [2023-08-30 08:11:18,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 424 transitions. [2023-08-30 08:11:18,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:18,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 424 transitions. [2023-08-30 08:11:18,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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 08:11:18,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 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 08:11:18,124 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 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 08:11:18,125 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 75 flow. Second operand 5 states and 424 transitions. [2023-08-30 08:11:18,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 215 flow [2023-08-30 08:11:18,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 209 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 08:11:18,127 INFO L231 Difference]: Finished difference. Result has 35 places, 17 transitions, 54 flow [2023-08-30 08:11:18,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=54, PETRI_PLACES=35, PETRI_TRANSITIONS=17} [2023-08-30 08:11:18,128 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2023-08-30 08:11:18,128 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 17 transitions, 54 flow [2023-08-30 08:11:18,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 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 08:11:18,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:18,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:18,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 08:11:18,129 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-30 08:11:18,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:18,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1403315068, now seen corresponding path program 1 times [2023-08-30 08:11:18,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:18,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101448309] [2023-08-30 08:11:18,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:18,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:18,190 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 08:11:18,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:18,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101448309] [2023-08-30 08:11:18,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101448309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:18,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:18,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:11:18,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079576544] [2023-08-30 08:11:18,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:18,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:11:18,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:18,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:11:18,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:11:18,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 152 [2023-08-30 08:11:18,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 17 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 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 08:11:18,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:18,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 152 [2023-08-30 08:11:18,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:18,242 INFO L130 PetriNetUnfolder]: 33/93 cut-off events. [2023-08-30 08:11:18,242 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-08-30 08:11:18,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 93 events. 33/93 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 247 event pairs, 17 based on Foata normal form. 6/98 useless extension candidates. Maximal degree in co-relation 168. Up to 50 conditions per place. [2023-08-30 08:11:18,243 INFO L137 encePairwiseOnDemand]: 149/152 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2023-08-30 08:11:18,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 113 flow [2023-08-30 08:11:18,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:11:18,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:11:18,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 339 transitions. [2023-08-30 08:11:18,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575657894736842 [2023-08-30 08:11:18,245 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 339 transitions. [2023-08-30 08:11:18,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 339 transitions. [2023-08-30 08:11:18,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:18,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 339 transitions. [2023-08-30 08:11:18,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 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 08:11:18,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 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 08:11:18,249 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 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 08:11:18,249 INFO L175 Difference]: Start difference. First operand has 35 places, 17 transitions, 54 flow. Second operand 4 states and 339 transitions. [2023-08-30 08:11:18,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 113 flow [2023-08-30 08:11:18,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 23 transitions, 105 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 08:11:18,250 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-08-30 08:11:18,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2023-08-30 08:11:18,252 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -12 predicate places. [2023-08-30 08:11:18,253 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-08-30 08:11:18,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 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 08:11:18,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2023-08-30 08:11:18,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-08-30 08:11:18,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-08-30 08:11:18,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-08-30 08:11:18,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 11 remaining) [2023-08-30 08:11:18,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 11 remaining) [2023-08-30 08:11:18,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2023-08-30 08:11:18,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-08-30 08:11:18,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-08-30 08:11:18,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-08-30 08:11:18,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-08-30 08:11:18,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 08:11:18,265 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 08:11:18,269 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 08:11:18,270 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 08:11:18,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 08:11:18 BasicIcfg [2023-08-30 08:11:18,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 08:11:18,277 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 08:11:18,277 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 08:11:18,277 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 08:11:18,278 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:11:14" (3/4) ... [2023-08-30 08:11:18,283 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 08:11:18,288 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 08:11:18,288 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 08:11:18,288 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 08:11:18,293 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-30 08:11:18,293 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 08:11:18,293 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 08:11:18,293 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 08:11:18,329 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 08:11:18,330 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 08:11:18,332 INFO L158 Benchmark]: Toolchain (without parser) took 5246.43ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 60.8MB in the beginning and 36.3MB in the end (delta: 24.5MB). Peak memory consumption was 43.2MB. Max. memory is 16.1GB. [2023-08-30 08:11:18,332 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 60.8MB. Free memory is still 38.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 08:11:18,333 INFO L158 Benchmark]: CACSL2BoogieTranslator took 486.23ms. Allocated memory is still 83.9MB. Free memory was 60.5MB in the beginning and 61.2MB in the end (delta: -645.3kB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2023-08-30 08:11:18,333 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.44ms. Allocated memory is still 83.9MB. Free memory was 61.2MB in the beginning and 59.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 08:11:18,333 INFO L158 Benchmark]: Boogie Preprocessor took 27.40ms. Allocated memory is still 83.9MB. Free memory was 59.5MB in the beginning and 57.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 08:11:18,333 INFO L158 Benchmark]: RCFGBuilder took 420.55ms. Allocated memory is still 83.9MB. Free memory was 57.9MB in the beginning and 43.6MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 08:11:18,334 INFO L158 Benchmark]: TraceAbstraction took 4187.21ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 42.7MB in the beginning and 39.5MB in the end (delta: 3.2MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2023-08-30 08:11:18,334 INFO L158 Benchmark]: Witness Printer took 53.03ms. Allocated memory is still 100.7MB. Free memory was 39.5MB in the beginning and 36.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 08:11:18,336 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 60.8MB. Free memory is still 38.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 486.23ms. Allocated memory is still 83.9MB. Free memory was 60.5MB in the beginning and 61.2MB in the end (delta: -645.3kB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.44ms. Allocated memory is still 83.9MB. Free memory was 61.2MB in the beginning and 59.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.40ms. Allocated memory is still 83.9MB. Free memory was 59.5MB in the beginning and 57.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 420.55ms. Allocated memory is still 83.9MB. Free memory was 57.9MB in the beginning and 43.6MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4187.21ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 42.7MB in the beginning and 39.5MB in the end (delta: 3.2MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. * Witness Printer took 53.03ms. Allocated memory is still 100.7MB. Free memory was 39.5MB in the beginning and 36.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 89 PlacesBefore, 38 PlacesAfterwards, 80 TransitionsBefore, 29 TransitionsAfterwards, 1600 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 58 TotalNumberOfCompositions, 4982 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2104, independent: 1912, independent conditional: 0, independent unconditional: 1912, dependent: 192, dependent conditional: 0, dependent unconditional: 192, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 829, independent: 802, independent conditional: 0, independent unconditional: 802, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2104, independent: 1110, independent conditional: 0, independent unconditional: 1110, dependent: 165, dependent conditional: 0, dependent unconditional: 165, unknown: 829, unknown conditional: 0, unknown unconditional: 829] , Statistics on independence cache: Total cache size (in pairs): 103, Positive cache size: 87, Positive conditional cache size: 0, Positive unconditional cache size: 87, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 714]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 714]: 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 7 procedures, 133 locations, 11 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: 4.0s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 272 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 159 mSDsluCounter, 110 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 465 IncrementalHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 70 mSDtfsCounter, 465 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=2, InterpolantAutomatonStates: 20, 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, 0.5s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 08:11:18,351 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