./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 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-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 BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 07:50:48,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:50:48,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:50:48,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:50:48,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:50:48,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:50:48,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:50:48,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:50:48,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:50:48,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:50:48,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:50:48,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:50:48,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:50:48,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:50:48,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:50:48,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:50:48,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:50:48,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:50:48,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:50:48,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:50:48,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:50:48,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:50:48,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:50:48,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:50:48,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:50:48,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:50:48,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:50:48,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:50:48,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:50:48,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:50:48,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:50:48,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:50:48,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:50:48,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:50:48,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:50:48,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:50:48,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:50:48,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:50:48,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:50:48,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:50:48,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:50:48,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:50:48,886 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:50:48,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:50:48,887 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:50:48,887 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:50:48,888 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:50:48,888 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:50:48,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:50:48,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:50:48,888 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:50:48,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:50:48,889 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:50:48,889 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:50:48,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:50:48,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:50:48,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:50:48,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:50:48,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:50:48,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:50:48,890 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:50:48,890 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:50:48,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:50:48,891 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:50:48,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:50:48,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:50:48,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:50:48,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:50:48,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:50:48,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:50:48,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:50:48,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:50:48,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:50:48,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:50:48,892 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:50:48,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:50:48,893 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:50:48,893 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:50:48,893 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:50:48,893 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:50:49,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:50:49,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:50:49,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:50:49,152 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:50:49,152 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:50:49,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2023-09-01 07:50:50,177 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:50:50,380 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:50:50,380 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2023-09-01 07:50:50,387 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c676fd9/58d0f3ea50a349689ecc641b16c9d706/FLAGa0326dbd0 [2023-09-01 07:50:50,407 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c676fd9/58d0f3ea50a349689ecc641b16c9d706 [2023-09-01 07:50:50,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:50:50,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:50:50,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:50:50,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:50:50,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:50:50,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:50:50" (1/1) ... [2023-09-01 07:50:50,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f786218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:50:50, skipping insertion in model container [2023-09-01 07:50:50,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:50:50" (1/1) ... [2023-09-01 07:50:50,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:50:50,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:50:50,602 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] [2023-09-01 07:50:50,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:50:50,621 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:50:50,653 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] [2023-09-01 07:50:50,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:50:50,661 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 07:50:50,662 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 07:50:50,666 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:50:50,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:50:50 WrapperNode [2023-09-01 07:50:50,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:50:50,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:50:50,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:50:50,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:50:50,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:50:50" (1/1) ... [2023-09-01 07:50:50,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:50:50" (1/1) ... [2023-09-01 07:50:50,720 INFO L138 Inliner]: procedures = 29, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 499 [2023-09-01 07:50:50,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:50:50,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:50:50,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:50:50,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:50:50,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:50:50" (1/1) ... [2023-09-01 07:50:50,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:50:50" (1/1) ... [2023-09-01 07:50:50,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:50:50" (1/1) ... [2023-09-01 07:50:50,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:50:50" (1/1) ... [2023-09-01 07:50:50,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:50:50" (1/1) ... [2023-09-01 07:50:50,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:50:50" (1/1) ... [2023-09-01 07:50:50,756 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:50:50" (1/1) ... [2023-09-01 07:50:50,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:50:50" (1/1) ... [2023-09-01 07:50:50,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:50:50,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:50:50,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:50:50,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:50:50,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:50:50" (1/1) ... [2023-09-01 07:50:50,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:50:50,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:50:50,805 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 07:50:50,807 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 07:50:50,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:50:50,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:50:50,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:50:50,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:50:50,831 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:50:50,831 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:50:50,831 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:50:50,831 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:50:50,832 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 07:50:50,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 07:50:50,832 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 07:50:50,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 07:50:50,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:50:50,832 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-09-01 07:50:50,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-09-01 07:50:50,832 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-09-01 07:50:50,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-09-01 07:50:50,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 07:50:50,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 07:50:50,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:50:50,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:50:50,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:50:50,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:50:50,834 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 07:50:50,986 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:50:50,988 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:50:51,484 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:50:51,905 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:50:51,905 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-09-01 07:50:51,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:50:51 BoogieIcfgContainer [2023-09-01 07:50:51,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:50:51,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:50:51,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:50:51,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:50:51,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:50:50" (1/3) ... [2023-09-01 07:50:51,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb910a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:50:51, skipping insertion in model container [2023-09-01 07:50:51,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:50:50" (2/3) ... [2023-09-01 07:50:51,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb910a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:50:51, skipping insertion in model container [2023-09-01 07:50:51,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:50:51" (3/3) ... [2023-09-01 07:50:51,918 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2023-09-01 07:50:51,924 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:50:51,930 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:50:51,930 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2023-09-01 07:50:51,931 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:50:52,135 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-09-01 07:50:52,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 373 transitions, 818 flow [2023-09-01 07:50:52,258 INFO L130 PetriNetUnfolder]: 21/317 cut-off events. [2023-09-01 07:50:52,259 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 07:50:52,264 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. [2023-09-01 07:50:52,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 369 places, 373 transitions, 818 flow [2023-09-01 07:50:52,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 300 places, 301 transitions, 647 flow [2023-09-01 07:50:52,273 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:50:52,280 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 300 places, 301 transitions, 647 flow [2023-09-01 07:50:52,282 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 300 places, 301 transitions, 647 flow [2023-09-01 07:50:52,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 301 transitions, 647 flow [2023-09-01 07:50:52,343 INFO L130 PetriNetUnfolder]: 20/301 cut-off events. [2023-09-01 07:50:52,343 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-09-01 07:50:52,346 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. [2023-09-01 07:50:52,353 INFO L119 LiptonReduction]: Number of co-enabled transitions 16956 [2023-09-01 07:51:13,569 INFO L134 LiptonReduction]: Checked pairs total: 57503 [2023-09-01 07:51:13,570 INFO L136 LiptonReduction]: Total number of compositions: 312 [2023-09-01 07:51:13,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:51:13,597 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;@730a77e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:51:13,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2023-09-01 07:51:13,599 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 07:51:13,599 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:51:13,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:51:13,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 07:51:13,600 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-09-01 07:51:13,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:51:13,605 INFO L85 PathProgramCache]: Analyzing trace with hash 2048, now seen corresponding path program 1 times [2023-09-01 07:51:13,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:51:13,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447074035] [2023-09-01 07:51:13,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:51:13,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:51:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:51:13,691 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 07:51:13,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:51:13,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447074035] [2023-09-01 07:51:13,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447074035] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:51:13,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:51:13,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 07:51:13,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456397481] [2023-09-01 07:51:13,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:51:13,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 07:51:13,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:51:13,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 07:51:13,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 07:51:13,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 689 [2023-09-01 07:51:13,727 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) [2023-09-01 07:51:13,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:51:13,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 689 [2023-09-01 07:51:13,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:51:37,533 INFO L130 PetriNetUnfolder]: 222342/280607 cut-off events. [2023-09-01 07:51:37,533 INFO L131 PetriNetUnfolder]: For 18314/18314 co-relation queries the response was YES. [2023-09-01 07:51:38,170 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. [2023-09-01 07:51:39,359 INFO L137 encePairwiseOnDemand]: 675/689 looper letters, 71 selfloop transitions, 0 changer transitions 0/93 dead transitions. [2023-09-01 07:51:39,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 93 transitions, 373 flow [2023-09-01 07:51:39,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 07:51:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 07:51:39,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 625 transitions. [2023-09-01 07:51:39,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45355587808417996 [2023-09-01 07:51:39,377 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 625 transitions. [2023-09-01 07:51:39,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 625 transitions. [2023-09-01 07:51:39,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:51:39,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 625 transitions. [2023-09-01 07:51:39,387 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) [2023-09-01 07:51:39,394 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) [2023-09-01 07:51:39,395 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) [2023-09-01 07:51:39,398 INFO L175 Difference]: Start difference. First operand has 117 places, 107 transitions, 259 flow. Second operand 2 states and 625 transitions. [2023-09-01 07:51:39,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 93 transitions, 373 flow [2023-09-01 07:51:39,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 93 transitions, 344 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-09-01 07:51:39,889 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 202 flow [2023-09-01 07:51:39,891 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} [2023-09-01 07:51:39,894 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -24 predicate places. [2023-09-01 07:51:39,894 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 202 flow [2023-09-01 07:51:39,895 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) [2023-09-01 07:51:39,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:51:39,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:51:39,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:51:39,899 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-09-01 07:51:39,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:51:39,900 INFO L85 PathProgramCache]: Analyzing trace with hash 65404, now seen corresponding path program 1 times [2023-09-01 07:51:39,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:51:39,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117311208] [2023-09-01 07:51:39,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:51:39,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:51:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:51:40,065 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 07:51:40,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:51:40,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117311208] [2023-09-01 07:51:40,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117311208] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:51:40,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:51:40,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:51:40,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417888158] [2023-09-01 07:51:40,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:51:40,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:51:40,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:51:40,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:51:40,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:51:40,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 689 [2023-09-01 07:51:40,077 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) [2023-09-01 07:51:40,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:51:40,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 689 [2023-09-01 07:51:40,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:52:22,972 INFO L130 PetriNetUnfolder]: 444683/561691 cut-off events. [2023-09-01 07:52:22,972 INFO L131 PetriNetUnfolder]: For 6448/6448 co-relation queries the response was YES. [2023-09-01 07:52:23,838 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. [2023-09-01 07:52:25,593 INFO L137 encePairwiseOnDemand]: 685/689 looper letters, 137 selfloop transitions, 2 changer transitions 0/161 dead transitions. [2023-09-01 07:52:25,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 161 transitions, 632 flow [2023-09-01 07:52:25,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:52:25,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:52:25,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 942 transitions. [2023-09-01 07:52:25,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45573294629898403 [2023-09-01 07:52:25,595 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 942 transitions. [2023-09-01 07:52:25,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 942 transitions. [2023-09-01 07:52:25,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:52:25,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 942 transitions. [2023-09-01 07:52:25,597 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) [2023-09-01 07:52:25,600 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) [2023-09-01 07:52:25,601 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) [2023-09-01 07:52:25,601 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 202 flow. Second operand 3 states and 942 transitions. [2023-09-01 07:52:25,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 161 transitions, 632 flow [2023-09-01 07:52:25,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 161 transitions, 632 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 07:52:25,607 INFO L231 Difference]: Finished difference. Result has 96 places, 94 transitions, 216 flow [2023-09-01 07:52:25,607 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} [2023-09-01 07:52:25,608 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -21 predicate places. [2023-09-01 07:52:25,608 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 94 transitions, 216 flow [2023-09-01 07:52:25,609 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) [2023-09-01 07:52:25,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:52:25,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:52:25,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 07:52:25,610 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-09-01 07:52:25,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:52:25,610 INFO L85 PathProgramCache]: Analyzing trace with hash 2030308, now seen corresponding path program 1 times [2023-09-01 07:52:25,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:52:25,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765099618] [2023-09-01 07:52:25,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:52:25,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:52:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:52:25,708 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 07:52:25,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:52:25,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765099618] [2023-09-01 07:52:25,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765099618] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:52:25,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:52:25,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:52:25,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836375060] [2023-09-01 07:52:25,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:52:25,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:52:25,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:52:25,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:52:25,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:52:25,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 689 [2023-09-01 07:52:25,718 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) [2023-09-01 07:52:25,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:52:25,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 689 [2023-09-01 07:52:25,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand