./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c --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/weaver/parallel-parallel-sum-2.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 c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 --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 11:19:42,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:19:42,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:19:42,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:19:42,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:19:42,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:19:42,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:19:42,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:19:42,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:19:42,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:19:42,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:19:42,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:19:42,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:19:42,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:19:42,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:19:42,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:19:42,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:19:42,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:19:42,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:19:42,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:19:42,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:19:42,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:19:42,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:19:42,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:19:42,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:19:42,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:19:42,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:19:42,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:19:42,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:19:42,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:19:42,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:19:42,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:19:42,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:19:42,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:19:42,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:19:42,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:19:42,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:19:42,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:19:42,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:19:42,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:19:42,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:19:42,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:19:42,786 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:19:42,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:19:42,787 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:19:42,787 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:19:42,788 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:19:42,789 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:19:42,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:19:42,789 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:19:42,789 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:19:42,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:19:42,790 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:19:42,791 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:19:42,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:19:42,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:19:42,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:19:42,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:19:42,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:19:42,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:19:42,792 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:19:42,792 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:19:42,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:19:42,792 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:19:42,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:19:42,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:19:42,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:19:42,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:19:42,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:19:42,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:19:42,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:19:42,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:19:42,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:19:42,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:19:42,795 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:19:42,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:19:42,795 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:19:42,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:19:42,796 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:19:42,796 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:19:43,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:19:43,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:19:43,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:19:43,128 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:19:43,129 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:19:43,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2023-08-30 11:19:44,350 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:19:44,574 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:19:44,578 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2023-08-30 11:19:44,586 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b778b3b1/3e1c93b2a6174e41b26b4e3bd15d99a9/FLAG85da25454 [2023-08-30 11:19:44,599 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b778b3b1/3e1c93b2a6174e41b26b4e3bd15d99a9 [2023-08-30 11:19:44,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:19:44,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:19:44,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:19:44,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:19:44,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:19:44,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:19:44" (1/1) ... [2023-08-30 11:19:44,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@94b2f46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:19:44, skipping insertion in model container [2023-08-30 11:19:44,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:19:44" (1/1) ... [2023-08-30 11:19:44,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:19:44,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:19:44,770 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-2.wvr.c[4225,4238] [2023-08-30 11:19:44,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:19:44,790 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:19:44,815 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-2.wvr.c[4225,4238] [2023-08-30 11:19:44,819 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:19:44,827 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:19:44,827 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:19:44,833 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:19:44,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:19:44 WrapperNode [2023-08-30 11:19:44,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:19:44,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:19:44,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:19:44,835 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:19:44,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:19:44" (1/1) ... [2023-08-30 11:19:44,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:19:44" (1/1) ... [2023-08-30 11:19:44,884 INFO L138 Inliner]: procedures = 29, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 499 [2023-08-30 11:19:44,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:19:44,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:19:44,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:19:44,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:19:44,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:19:44" (1/1) ... [2023-08-30 11:19:44,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:19:44" (1/1) ... [2023-08-30 11:19:44,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:19:44" (1/1) ... [2023-08-30 11:19:44,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:19:44" (1/1) ... [2023-08-30 11:19:44,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:19:44" (1/1) ... [2023-08-30 11:19:44,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:19:44" (1/1) ... [2023-08-30 11:19:44,944 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:19:44" (1/1) ... [2023-08-30 11:19:44,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:19:44" (1/1) ... [2023-08-30 11:19:44,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:19:44,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:19:44,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:19:44,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:19:44,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:19:44" (1/1) ... [2023-08-30 11:19:44,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:19:44,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:19:45,006 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 11:19:45,037 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 11:19:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:19:45,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:19:45,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:19:45,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:19:45,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:19:45,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:19:45,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:19:45,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:19:45,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:19:45,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:19:45,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 11:19:45,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 11:19:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:19:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-30 11:19:45,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-30 11:19:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-08-30 11:19:45,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-08-30 11:19:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:19:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:19:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:19:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:19:45,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:19:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:19:45,083 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 11:19:45,245 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:19:45,246 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:19:45,856 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:19:46,530 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:19:46,530 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-30 11:19:46,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:19:46 BoogieIcfgContainer [2023-08-30 11:19:46,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:19:46,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:19:46,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:19:46,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:19:46,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:19:44" (1/3) ... [2023-08-30 11:19:46,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6baecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:19:46, skipping insertion in model container [2023-08-30 11:19:46,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:19:44" (2/3) ... [2023-08-30 11:19:46,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6baecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:19:46, skipping insertion in model container [2023-08-30 11:19:46,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:19:46" (3/3) ... [2023-08-30 11:19:46,542 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2023-08-30 11:19:46,550 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:19:46,558 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:19:46,559 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2023-08-30 11:19:46,559 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:19:46,859 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-30 11:19:46,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 373 transitions, 818 flow [2023-08-30 11:19:47,082 INFO L130 PetriNetUnfolder]: 21/317 cut-off events. [2023-08-30 11:19:47,082 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 11:19:47,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 317 events. 21/317 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 552 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 267. Up to 3 conditions per place. [2023-08-30 11:19:47,095 INFO L82 GeneralOperation]: Start removeDead. Operand has 369 places, 373 transitions, 818 flow [2023-08-30 11:19:47,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 300 places, 301 transitions, 647 flow [2023-08-30 11:19:47,108 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:19:47,116 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 300 places, 301 transitions, 647 flow [2023-08-30 11:19:47,119 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 300 places, 301 transitions, 647 flow [2023-08-30 11:19:47,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 301 transitions, 647 flow [2023-08-30 11:19:47,189 INFO L130 PetriNetUnfolder]: 20/301 cut-off events. [2023-08-30 11:19:47,189 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 11:19:47,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 301 events. 20/301 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 558 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 267. Up to 3 conditions per place. [2023-08-30 11:19:47,200 INFO L119 LiptonReduction]: Number of co-enabled transitions 16956 [2023-08-30 11:20:09,680 INFO L134 LiptonReduction]: Checked pairs total: 57503 [2023-08-30 11:20:09,680 INFO L136 LiptonReduction]: Total number of compositions: 312 [2023-08-30 11:20:09,693 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:20:09,699 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;@3130a74c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:20:09,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2023-08-30 11:20:09,701 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:20:09,701 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:20:09,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:20:09,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 11:20:09,702 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-08-30 11:20:09,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:20:09,707 INFO L85 PathProgramCache]: Analyzing trace with hash 2048, now seen corresponding path program 1 times [2023-08-30 11:20:09,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:20:09,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272784049] [2023-08-30 11:20:09,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:20:09,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:20:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:20:09,816 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 11:20:09,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:20:09,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272784049] [2023-08-30 11:20:09,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272784049] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:20:09,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:20:09,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 11:20:09,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804666126] [2023-08-30 11:20:09,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:20:09,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 11:20:09,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:20:09,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 11:20:09,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 11:20:09,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 689 [2023-08-30 11:20:09,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 107 transitions, 259 flow. Second operand has 2 states, 2 states have (on average 270.5) internal successors, (541), 2 states have internal predecessors, (541), 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 11:20:09,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:20:09,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 689 [2023-08-30 11:20:09,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:20:34,269 INFO L130 PetriNetUnfolder]: 222342/280607 cut-off events. [2023-08-30 11:20:34,270 INFO L131 PetriNetUnfolder]: For 18314/18314 co-relation queries the response was YES. [2023-08-30 11:20:34,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578467 conditions, 280607 events. 222342/280607 cut-off events. For 18314/18314 co-relation queries the response was YES. Maximal size of possible extension queue 13697. Compared 1627369 event pairs, 194005 based on Foata normal form. 0/112490 useless extension candidates. Maximal degree in co-relation 576033. Up to 274187 conditions per place. [2023-08-30 11:20:35,954 INFO L137 encePairwiseOnDemand]: 675/689 looper letters, 71 selfloop transitions, 0 changer transitions 0/93 dead transitions. [2023-08-30 11:20:35,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 93 transitions, 373 flow [2023-08-30 11:20:35,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 11:20:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 11:20:35,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 625 transitions. [2023-08-30 11:20:35,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45355587808417996 [2023-08-30 11:20:35,968 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 625 transitions. [2023-08-30 11:20:35,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 625 transitions. [2023-08-30 11:20:35,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:20:35,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 625 transitions. [2023-08-30 11:20:35,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 312.5) internal successors, (625), 2 states have internal predecessors, (625), 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 11:20:35,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 689.0) internal successors, (2067), 3 states have internal predecessors, (2067), 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 11:20:36,000 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 689.0) internal successors, (2067), 3 states have internal predecessors, (2067), 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 11:20:36,002 INFO L175 Difference]: Start difference. First operand has 117 places, 107 transitions, 259 flow. Second operand 2 states and 625 transitions. [2023-08-30 11:20:36,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 93 transitions, 373 flow [2023-08-30 11:20:36,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 93 transitions, 344 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-08-30 11:20:36,498 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 202 flow [2023-08-30 11:20:36,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=689, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=202, PETRI_PLACES=93, PETRI_TRANSITIONS=93} [2023-08-30 11:20:36,502 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -24 predicate places. [2023-08-30 11:20:36,503 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 202 flow [2023-08-30 11:20:36,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 270.5) internal successors, (541), 2 states have internal predecessors, (541), 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 11:20:36,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:20:36,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:20:36,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:20:36,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-08-30 11:20:36,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:20:36,518 INFO L85 PathProgramCache]: Analyzing trace with hash 65404, now seen corresponding path program 1 times [2023-08-30 11:20:36,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:20:36,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541417706] [2023-08-30 11:20:36,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:20:36,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:20:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:20:36,749 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 11:20:36,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:20:36,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541417706] [2023-08-30 11:20:36,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541417706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:20:36,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:20:36,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:20:36,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041633056] [2023-08-30 11:20:36,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:20:36,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:20:36,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:20:36,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:20:36,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:20:36,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 689 [2023-08-30 11:20:36,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 93 transitions, 202 flow. Second operand has 3 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) [2023-08-30 11:20:36,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:20:36,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 689 [2023-08-30 11:20:36,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:21:18,979 INFO L130 PetriNetUnfolder]: 444683/561691 cut-off events. [2023-08-30 11:21:18,979 INFO L131 PetriNetUnfolder]: For 6448/6448 co-relation queries the response was YES. [2023-08-30 11:21:19,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1122297 conditions, 561691 events. 444683/561691 cut-off events. For 6448/6448 co-relation queries the response was YES. Maximal size of possible extension queue 23269. Compared 3473945 event pairs, 388010 based on Foata normal form. 0/225014 useless extension candidates. Maximal degree in co-relation 1122294. Up to 274187 conditions per place. [2023-08-30 11:21:21,699 INFO L137 encePairwiseOnDemand]: 685/689 looper letters, 137 selfloop transitions, 2 changer transitions 0/161 dead transitions. [2023-08-30 11:21:21,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 161 transitions, 632 flow [2023-08-30 11:21:21,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:21:21,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:21:21,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 942 transitions. [2023-08-30 11:21:21,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45573294629898403 [2023-08-30 11:21:21,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 942 transitions. [2023-08-30 11:21:21,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 942 transitions. [2023-08-30 11:21:21,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:21:21,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 942 transitions. [2023-08-30 11:21:21,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 314.0) internal successors, (942), 3 states have internal predecessors, (942), 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 11:21:21,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 689.0) internal successors, (2756), 4 states have internal predecessors, (2756), 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 11:21:21,713 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 689.0) internal successors, (2756), 4 states have internal predecessors, (2756), 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 11:21:21,713 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 202 flow. Second operand 3 states and 942 transitions. [2023-08-30 11:21:21,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 161 transitions, 632 flow [2023-08-30 11:21:21,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 161 transitions, 632 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 11:21:21,717 INFO L231 Difference]: Finished difference. Result has 96 places, 94 transitions, 216 flow [2023-08-30 11:21:21,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=689, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=96, PETRI_TRANSITIONS=94} [2023-08-30 11:21:21,718 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -21 predicate places. [2023-08-30 11:21:21,719 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 94 transitions, 216 flow [2023-08-30 11:21:21,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-08-30 11:21:21,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:21:21,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:21:21,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 11:21:21,720 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-08-30 11:21:21,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:21:21,721 INFO L85 PathProgramCache]: Analyzing trace with hash 2030308, now seen corresponding path program 1 times [2023-08-30 11:21:21,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:21:21,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825708399] [2023-08-30 11:21:21,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:21:21,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:21:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:21:21,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:21:21,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:21:21,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825708399] [2023-08-30 11:21:21,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825708399] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:21:21,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:21:21,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:21:21,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755468797] [2023-08-30 11:21:21,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:21:21,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:21:21,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:21:21,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:21:21,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:21:21,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 689 [2023-08-30 11:21:21,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 94 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 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 11:21:21,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:21:21,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 689 [2023-08-30 11:21:21,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:22:07,844 INFO L130 PetriNetUnfolder]: 444683/561210 cut-off events. [2023-08-30 11:22:07,845 INFO L131 PetriNetUnfolder]: For 6402/6402 co-relation queries the response was YES. [2023-08-30 11:22:08,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1121822 conditions, 561210 events. 444683/561210 cut-off events. For 6402/6402 co-relation queries the response was YES. Maximal size of possible extension queue 26002. Compared 3481237 event pairs, 388010 based on Foata normal form. 0/224981 useless extension candidates. Maximal degree in co-relation 1121817. Up to 548368 conditions per place. [2023-08-30 11:22:10,574 INFO L137 encePairwiseOnDemand]: 687/689 looper letters, 70 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2023-08-30 11:22:10,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 93 transitions, 354 flow [2023-08-30 11:22:10,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:22:10,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:22:10,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 872 transitions. [2023-08-30 11:22:10,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42186744073536525 [2023-08-30 11:22:10,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 872 transitions. [2023-08-30 11:22:10,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 872 transitions. [2023-08-30 11:22:10,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:22:10,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 872 transitions. [2023-08-30 11:22:10,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 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 11:22:10,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 689.0) internal successors, (2756), 4 states have internal predecessors, (2756), 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 11:22:10,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 689.0) internal successors, (2756), 4 states have internal predecessors, (2756), 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 11:22:10,585 INFO L175 Difference]: Start difference. First operand has 96 places, 94 transitions, 216 flow. Second operand 3 states and 872 transitions. [2023-08-30 11:22:10,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 93 transitions, 354 flow [2023-08-30 11:22:10,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 93 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:22:10,588 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 212 flow [2023-08-30 11:22:10,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=689, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=96, PETRI_TRANSITIONS=93} [2023-08-30 11:22:10,589 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -21 predicate places. [2023-08-30 11:22:10,589 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 212 flow [2023-08-30 11:22:10,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 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 11:22:10,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:22:10,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:22:10,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 11:22:10,591 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-08-30 11:22:10,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:22:10,591 INFO L85 PathProgramCache]: Analyzing trace with hash 2030336, now seen corresponding path program 1 times [2023-08-30 11:22:10,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:22:10,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722979886] [2023-08-30 11:22:10,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:22:10,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:22:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:22:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:22:10,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:22:10,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722979886] [2023-08-30 11:22:10,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722979886] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:22:10,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152621052] [2023-08-30 11:22:10,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:22:10,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:22:10,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:22:10,657 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:22:10,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:22:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:22:10,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:22:10,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:22:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:22:10,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:22:10,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:22:10,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152621052] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:22:10,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:22:10,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:22:10,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910518119] [2023-08-30 11:22:10,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:22:10,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:22:10,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:22:10,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:22:10,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:22:10,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 689 [2023-08-30 11:22:10,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 93 transitions, 212 flow. Second operand has 7 states, 7 states have (on average 268.14285714285717) internal successors, (1877), 7 states have internal predecessors, (1877), 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 11:22:10,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:22:10,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 689 [2023-08-30 11:22:10,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand