./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/weaver/parallel-parallel-sum-1-dsl.wvr.c -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 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 07:49:41,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:49:41,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:49:41,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:49:41,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:49:41,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:49:41,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:49:41,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:49:41,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:49:41,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:49:41,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:49:41,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:49:41,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:49:41,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:49:41,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:49:41,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:49:41,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:49:41,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:49:41,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:49:41,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:49:41,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:49:41,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:49:41,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:49:41,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:49:41,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:49:41,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:49:41,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:49:41,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:49:41,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:49:41,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:49:41,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:49:41,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:49:41,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:49:41,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:49:41,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:49:41,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:49:41,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:49:41,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:49:41,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:49:41,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:49:41,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:49:41,363 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:49:41,397 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:49:41,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:49:41,399 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:49:41,399 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:49:41,400 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:49:41,400 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:49:41,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:49:41,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:49:41,401 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:49:41,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:49:41,403 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:49:41,403 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:49:41,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:49:41,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:49:41,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:49:41,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:49:41,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:49:41,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:49:41,404 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:49:41,405 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:49:41,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:49:41,405 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:49:41,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:49:41,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:49:41,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:49:41,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:49:41,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:49:41,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:49:41,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:49:41,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:49:41,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:49:41,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:49:41,407 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:49:41,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:49:41,408 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:49:41,408 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:49:41,408 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:49:41,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:49:41,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:49:41,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:49:41,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:49:41,720 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:49:41,721 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:49:41,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c [2023-09-01 07:49:42,858 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:49:43,080 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:49:43,080 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c [2023-09-01 07:49:43,091 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e5756cdb/ab25ca9ad6de43c8bb8994c6136cea73/FLAG3748c631b [2023-09-01 07:49:43,116 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e5756cdb/ab25ca9ad6de43c8bb8994c6136cea73 [2023-09-01 07:49:43,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:49:43,120 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:49:43,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:49:43,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:49:43,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:49:43,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:49:43" (1/1) ... [2023-09-01 07:49:43,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e3947b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:49:43, skipping insertion in model container [2023-09-01 07:49:43,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:49:43" (1/1) ... [2023-09-01 07:49:43,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:49:43,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:49:43,364 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2023-09-01 07:49:43,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:49:43,384 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:49:43,421 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2023-09-01 07:49:43,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:49:43,447 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 07:49:43,448 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 07:49:43,453 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:49:43,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:49:43 WrapperNode [2023-09-01 07:49:43,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:49:43,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:49:43,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:49:43,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:49:43,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:49:43" (1/1) ... [2023-09-01 07:49:43,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:49:43" (1/1) ... [2023-09-01 07:49:43,526 INFO L138 Inliner]: procedures = 29, calls = 95, calls flagged for inlining = 21, calls inlined = 27, statements flattened = 371 [2023-09-01 07:49:43,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:49:43,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:49:43,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:49:43,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:49:43,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:49:43" (1/1) ... [2023-09-01 07:49:43,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:49:43" (1/1) ... [2023-09-01 07:49:43,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:49:43" (1/1) ... [2023-09-01 07:49:43,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:49:43" (1/1) ... [2023-09-01 07:49:43,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:49:43" (1/1) ... [2023-09-01 07:49:43,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:49:43" (1/1) ... [2023-09-01 07:49:43,569 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:49:43" (1/1) ... [2023-09-01 07:49:43,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:49:43" (1/1) ... [2023-09-01 07:49:43,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:49:43,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:49:43,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:49:43,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:49:43,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:49:43" (1/1) ... [2023-09-01 07:49:43,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:49:43,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:43,613 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) [2023-09-01 07:49:43,631 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 [2023-09-01 07:49:43,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:49:43,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:49:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:49:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:49:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:49:43,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:49:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:49:43,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:49:43,664 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 07:49:43,665 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 07:49:43,665 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 07:49:43,665 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 07:49:43,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:49:43,665 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-09-01 07:49:43,665 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-09-01 07:49:43,665 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-09-01 07:49:43,665 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-09-01 07:49:43,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 07:49:43,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 07:49:43,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:49:43,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:49:43,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:49:43,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:49:43,668 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 07:49:43,840 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:49:43,841 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:49:44,380 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:49:44,850 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:49:44,851 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-09-01 07:49:44,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:49:44 BoogieIcfgContainer [2023-09-01 07:49:44,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:49:44,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:49:44,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:49:44,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:49:44,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:49:43" (1/3) ... [2023-09-01 07:49:44,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37acbccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:49:44, skipping insertion in model container [2023-09-01 07:49:44,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:49:43" (2/3) ... [2023-09-01 07:49:44,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37acbccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:49:44, skipping insertion in model container [2023-09-01 07:49:44,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:49:44" (3/3) ... [2023-09-01 07:49:44,862 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2023-09-01 07:49:44,870 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:49:44,878 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:49:44,879 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-09-01 07:49:44,879 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:49:45,101 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-09-01 07:49:45,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 301 transitions, 674 flow [2023-09-01 07:49:45,295 INFO L130 PetriNetUnfolder]: 18/273 cut-off events. [2023-09-01 07:49:45,296 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 07:49:45,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 273 events. 18/273 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 505 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 236. Up to 3 conditions per place. [2023-09-01 07:49:45,305 INFO L82 GeneralOperation]: Start removeDead. Operand has 302 places, 301 transitions, 674 flow [2023-09-01 07:49:45,315 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 257 transitions, 559 flow [2023-09-01 07:49:45,319 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:49:45,330 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 259 places, 257 transitions, 559 flow [2023-09-01 07:49:45,334 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 259 places, 257 transitions, 559 flow [2023-09-01 07:49:45,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 257 transitions, 559 flow [2023-09-01 07:49:45,401 INFO L130 PetriNetUnfolder]: 17/257 cut-off events. [2023-09-01 07:49:45,401 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-09-01 07:49:45,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 257 events. 17/257 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 501 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 236. Up to 3 conditions per place. [2023-09-01 07:49:45,413 INFO L119 LiptonReduction]: Number of co-enabled transitions 13648 [2023-09-01 07:49:51,809 INFO L134 LiptonReduction]: Checked pairs total: 78482 [2023-09-01 07:49:51,809 INFO L136 LiptonReduction]: Total number of compositions: 205 [2023-09-01 07:49:51,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:49:51,832 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;@55ca6d1f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:49:51,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2023-09-01 07:49:51,833 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 07:49:51,834 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:49:51,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:51,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 07:49:51,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 75 more)] === [2023-09-01 07:49:51,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:51,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1642, now seen corresponding path program 1 times [2023-09-01 07:49:51,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:51,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736475890] [2023-09-01 07:49:51,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:51,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:51,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:51,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:51,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736475890] [2023-09-01 07:49:51,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736475890] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:49:51,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:49:51,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 07:49:51,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414131679] [2023-09-01 07:49:52,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:49:52,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 07:49:52,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:52,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 07:49:52,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 07:49:52,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 510 [2023-09-01 07:49:52,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 99 transitions, 243 flow. Second operand has 2 states, 2 states have (on average 225.5) internal successors, (451), 2 states have internal predecessors, (451), 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) [2023-09-01 07:49:52,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:52,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 510 [2023-09-01 07:49:52,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:50:34,673 INFO L130 PetriNetUnfolder]: 332086/417230 cut-off events. [2023-09-01 07:50:34,673 INFO L131 PetriNetUnfolder]: For 30746/30746 co-relation queries the response was YES. [2023-09-01 07:50:35,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 857160 conditions, 417230 events. 332086/417230 cut-off events. For 30746/30746 co-relation queries the response was YES. Maximal size of possible extension queue 15684. Compared 2463382 event pairs, 293865 based on Foata normal form. 0/194381 useless extension candidates. Maximal degree in co-relation 854192. Up to 408139 conditions per place. [2023-09-01 07:50:37,354 INFO L137 encePairwiseOnDemand]: 500/510 looper letters, 69 selfloop transitions, 0 changer transitions 0/89 dead transitions. [2023-09-01 07:50:37,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 89 transitions, 361 flow [2023-09-01 07:50:37,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 07:50:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 07:50:37,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 529 transitions. [2023-09-01 07:50:37,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186274509803922 [2023-09-01 07:50:37,367 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 529 transitions. [2023-09-01 07:50:37,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 529 transitions. [2023-09-01 07:50:37,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:50:37,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 529 transitions. [2023-09-01 07:50:37,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 264.5) internal successors, (529), 2 states have internal predecessors, (529), 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) [2023-09-01 07:50:37,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 510.0) internal successors, (1530), 3 states have internal predecessors, (1530), 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) [2023-09-01 07:50:37,383 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 510.0) internal successors, (1530), 3 states have internal predecessors, (1530), 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) [2023-09-01 07:50:37,385 INFO L175 Difference]: Start difference. First operand has 109 places, 99 transitions, 243 flow. Second operand 2 states and 529 transitions. [2023-09-01 07:50:37,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 89 transitions, 361 flow [2023-09-01 07:50:41,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 332 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-09-01 07:50:41,523 INFO L231 Difference]: Finished difference. Result has 89 places, 89 transitions, 194 flow [2023-09-01 07:50:41,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=194, PETRI_PLACES=89, PETRI_TRANSITIONS=89} [2023-09-01 07:50:41,527 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -20 predicate places. [2023-09-01 07:50:41,527 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 89 transitions, 194 flow [2023-09-01 07:50:41,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 225.5) internal successors, (451), 2 states have internal predecessors, (451), 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) [2023-09-01 07:50:41,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:50:41,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:50:41,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:50:41,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 75 more)] === [2023-09-01 07:50:41,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:50:41,529 INFO L85 PathProgramCache]: Analyzing trace with hash 52525, now seen corresponding path program 1 times [2023-09-01 07:50:41,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:50:41,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762073910] [2023-09-01 07:50:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:50:41,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:50:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:50:41,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:50:41,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:50:41,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762073910] [2023-09-01 07:50:41,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762073910] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:50:41,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:50:41,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:50:41,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81894482] [2023-09-01 07:50:41,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:50:41,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:50:41,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:50:41,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:50:41,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:50:41,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 510 [2023-09-01 07:50:41,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 89 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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) [2023-09-01 07:50:41,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:50:41,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 510 [2023-09-01 07:50:41,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:51:58,521 INFO L130 PetriNetUnfolder]: 664171/836077 cut-off events. [2023-09-01 07:51:58,522 INFO L131 PetriNetUnfolder]: For 14786/14786 co-relation queries the response was YES. [2023-09-01 07:52:00,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1668731 conditions, 836077 events. 664171/836077 cut-off events. For 14786/14786 co-relation queries the response was YES. Maximal size of possible extension queue 28872. Compared 5282436 event pairs, 587730 based on Foata normal form. 0/390583 useless extension candidates. Maximal degree in co-relation 1668728. Up to 408139 conditions per place. [2023-09-01 07:52:04,282 INFO L137 encePairwiseOnDemand]: 506/510 looper letters, 133 selfloop transitions, 2 changer transitions 0/155 dead transitions. [2023-09-01 07:52:04,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 155 transitions, 612 flow [2023-09-01 07:52:04,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:52:04,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:52:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 803 transitions. [2023-09-01 07:52:04,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248366013071896 [2023-09-01 07:52:04,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 803 transitions. [2023-09-01 07:52:04,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 803 transitions. [2023-09-01 07:52:04,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:52:04,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 803 transitions. [2023-09-01 07:52:04,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 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) [2023-09-01 07:52:04,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 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) [2023-09-01 07:52:04,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 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) [2023-09-01 07:52:04,295 INFO L175 Difference]: Start difference. First operand has 89 places, 89 transitions, 194 flow. Second operand 3 states and 803 transitions. [2023-09-01 07:52:04,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 155 transitions, 612 flow [2023-09-01 07:52:04,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 155 transitions, 612 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 07:52:04,298 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 208 flow [2023-09-01 07:52:04,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2023-09-01 07:52:04,299 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -17 predicate places. [2023-09-01 07:52:04,300 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 208 flow [2023-09-01 07:52:04,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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) [2023-09-01 07:52:04,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:52:04,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:52:04,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 07:52:04,301 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 75 more)] === [2023-09-01 07:52:04,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:52:04,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1629929, now seen corresponding path program 1 times [2023-09-01 07:52:04,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:52:04,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130233195] [2023-09-01 07:52:04,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:52:04,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:52:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:52:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:52:04,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:52:04,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130233195] [2023-09-01 07:52:04,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130233195] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:52:04,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:52:04,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:52:04,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213927587] [2023-09-01 07:52:04,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:52:04,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:52:04,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:52:04,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:52:04,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:52:04,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 510 [2023-09-01 07:52:04,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 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) [2023-09-01 07:52:04,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:52:04,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 510 [2023-09-01 07:52:04,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand