./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/array-eq-symm.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/array-eq-symm.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 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:35:05,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:35:05,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:35:05,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:35:05,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:35:05,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:35:05,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:35:05,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:35:05,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:35:05,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:35:05,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:35:05,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:35:05,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:35:05,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:35:05,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:35:05,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:35:05,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:35:05,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:35:05,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:35:05,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:35:05,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:35:05,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:35:05,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:35:05,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:35:05,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:35:05,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:35:05,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:35:05,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:35:05,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:35:05,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:35:05,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:35:05,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:35:05,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:35:05,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:35:05,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:35:05,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:35:05,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:35:05,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:35:05,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:35:05,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:35:05,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:35:05,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:35:05,926 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:35:05,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:35:05,928 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:35:05,928 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:35:05,929 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:35:05,929 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:35:05,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:35:05,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:35:05,931 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:35:05,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:35:05,932 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:35:05,932 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:35:05,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:35:05,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:35:05,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:35:05,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:35:05,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:35:05,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:35:05,933 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:35:05,934 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:35:05,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:35:05,934 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:35:05,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:35:05,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:35:05,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:35:05,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:35:05,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:35:05,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:35:05,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:35:05,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:35:05,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:35:05,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:35:05,936 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:35:05,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:35:05,937 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:35:05,937 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:35:05,937 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:35:05,937 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:35:06,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:35:06,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:35:06,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:35:06,311 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:35:06,312 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:35:06,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/array-eq-symm.wvr.c [2023-08-30 14:35:07,410 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:35:07,621 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:35:07,622 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-symm.wvr.c [2023-08-30 14:35:07,627 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0e317382/6f2576a1d6374f0baa4eeeb91b44e811/FLAG4762bbcf1 [2023-08-30 14:35:07,639 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0e317382/6f2576a1d6374f0baa4eeeb91b44e811 [2023-08-30 14:35:07,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:35:07,644 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:35:07,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:35:07,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:35:07,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:35:07,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:35:07" (1/1) ... [2023-08-30 14:35:07,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b26b5e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:07, skipping insertion in model container [2023-08-30 14:35:07,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:35:07" (1/1) ... [2023-08-30 14:35:07,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:35:07,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:35:07,800 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/array-eq-symm.wvr.c[2251,2264] [2023-08-30 14:35:07,805 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:35:07,813 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:35:07,829 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/array-eq-symm.wvr.c[2251,2264] [2023-08-30 14:35:07,832 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:35:07,844 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:35:07,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:07 WrapperNode [2023-08-30 14:35:07,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:35:07,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:35:07,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:35:07,846 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:35:07,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:07" (1/1) ... [2023-08-30 14:35:07,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:07" (1/1) ... [2023-08-30 14:35:07,876 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 120 [2023-08-30 14:35:07,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:35:07,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:35:07,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:35:07,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:35:07,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:07" (1/1) ... [2023-08-30 14:35:07,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:07" (1/1) ... [2023-08-30 14:35:07,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:07" (1/1) ... [2023-08-30 14:35:07,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:07" (1/1) ... [2023-08-30 14:35:07,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:07" (1/1) ... [2023-08-30 14:35:07,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:07" (1/1) ... [2023-08-30 14:35:07,907 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:07" (1/1) ... [2023-08-30 14:35:07,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:07" (1/1) ... [2023-08-30 14:35:07,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:35:07,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:35:07,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:35:07,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:35:07,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:07" (1/1) ... [2023-08-30 14:35:07,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:35:07,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:35:07,958 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 14:35:07,985 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 14:35:07,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:35:07,997 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 14:35:07,997 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 14:35:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 14:35:07,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 14:35:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:35:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:35:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:35:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:35:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:35:08,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:35:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:35:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:35:08,023 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 14:35:08,136 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:35:08,137 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:35:08,442 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:35:08,450 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:35:08,464 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 14:35:08,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:35:08 BoogieIcfgContainer [2023-08-30 14:35:08,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:35:08,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:35:08,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:35:08,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:35:08,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:35:07" (1/3) ... [2023-08-30 14:35:08,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ff9c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:35:08, skipping insertion in model container [2023-08-30 14:35:08,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:07" (2/3) ... [2023-08-30 14:35:08,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ff9c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:35:08, skipping insertion in model container [2023-08-30 14:35:08,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:35:08" (3/3) ... [2023-08-30 14:35:08,474 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2023-08-30 14:35:08,481 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:35:08,498 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:35:08,501 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 14:35:08,501 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:35:08,609 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:35:08,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 177 transitions, 370 flow [2023-08-30 14:35:08,700 INFO L130 PetriNetUnfolder]: 15/175 cut-off events. [2023-08-30 14:35:08,700 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:35:08,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 175 events. 15/175 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 178 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 134. Up to 3 conditions per place. [2023-08-30 14:35:08,706 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 177 transitions, 370 flow [2023-08-30 14:35:08,710 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 159 transitions, 327 flow [2023-08-30 14:35:08,713 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:35:08,722 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 159 transitions, 327 flow [2023-08-30 14:35:08,724 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 159 transitions, 327 flow [2023-08-30 14:35:08,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 159 transitions, 327 flow [2023-08-30 14:35:08,767 INFO L130 PetriNetUnfolder]: 14/159 cut-off events. [2023-08-30 14:35:08,772 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:35:08,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 159 events. 14/159 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 171 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 134. Up to 3 conditions per place. [2023-08-30 14:35:08,777 INFO L119 LiptonReduction]: Number of co-enabled transitions 1400 [2023-08-30 14:35:13,505 INFO L134 LiptonReduction]: Checked pairs total: 1963 [2023-08-30 14:35:13,506 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-08-30 14:35:13,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:35:13,525 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;@6e1a1fc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:35:13,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-30 14:35:13,528 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:35:13,528 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:35:13,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:13,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:35:13,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 14:35:13,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:13,534 INFO L85 PathProgramCache]: Analyzing trace with hash 21487, now seen corresponding path program 1 times [2023-08-30 14:35:13,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:13,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767891576] [2023-08-30 14:35:13,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:13,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:13,771 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 14:35:13,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:13,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767891576] [2023-08-30 14:35:13,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767891576] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:13,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:35:13,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:35:13,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554377118] [2023-08-30 14:35:13,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:13,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:35:13,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:13,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:35:13,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:35:13,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 358 [2023-08-30 14:35:13,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 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 14:35:13,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:13,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 358 [2023-08-30 14:35:13,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:13,964 INFO L130 PetriNetUnfolder]: 181/307 cut-off events. [2023-08-30 14:35:13,964 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-08-30 14:35:13,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 307 events. 181/307 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1032 event pairs, 114 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 270. Up to 157 conditions per place. [2023-08-30 14:35:13,968 INFO L137 encePairwiseOnDemand]: 350/358 looper letters, 41 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-08-30 14:35:13,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 45 transitions, 198 flow [2023-08-30 14:35:13,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:35:13,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:35:13,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-08-30 14:35:13,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48417132216014896 [2023-08-30 14:35:13,983 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-08-30 14:35:13,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-08-30 14:35:13,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:13,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-08-30 14:35:13,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 14:35:13,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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 14:35:13,996 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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 14:35:13,998 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 59 flow. Second operand 3 states and 520 transitions. [2023-08-30 14:35:13,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 45 transitions, 198 flow [2023-08-30 14:35:14,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 45 transitions, 188 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 14:35:14,002 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 90 flow [2023-08-30 14:35:14,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2023-08-30 14:35:14,018 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-30 14:35:14,018 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 90 flow [2023-08-30 14:35:14,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 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 14:35:14,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:14,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:35:14,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:35:14,020 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 14:35:14,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:14,021 INFO L85 PathProgramCache]: Analyzing trace with hash 667124, now seen corresponding path program 1 times [2023-08-30 14:35:14,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:14,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071765573] [2023-08-30 14:35:14,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:14,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:14,084 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 14:35:14,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:14,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071765573] [2023-08-30 14:35:14,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071765573] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:14,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:35:14,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:35:14,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180890600] [2023-08-30 14:35:14,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:14,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:35:14,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:14,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:35:14,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:35:14,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 358 [2023-08-30 14:35:14,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:35:14,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:14,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 358 [2023-08-30 14:35:14,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:14,175 INFO L130 PetriNetUnfolder]: 181/305 cut-off events. [2023-08-30 14:35:14,175 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:35:14,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 305 events. 181/305 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1052 event pairs, 114 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 313. Up to 305 conditions per place. [2023-08-30 14:35:14,177 INFO L137 encePairwiseOnDemand]: 355/358 looper letters, 25 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-08-30 14:35:14,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 26 transitions, 134 flow [2023-08-30 14:35:14,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:35:14,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:35:14,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-30 14:35:14,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618249534450652 [2023-08-30 14:35:14,180 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-30 14:35:14,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-30 14:35:14,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:14,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-30 14:35:14,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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 14:35:14,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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 14:35:14,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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 14:35:14,185 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 90 flow. Second operand 3 states and 496 transitions. [2023-08-30 14:35:14,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 26 transitions, 134 flow [2023-08-30 14:35:14,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 26 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:35:14,187 INFO L231 Difference]: Finished difference. Result has 26 places, 26 transitions, 76 flow [2023-08-30 14:35:14,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=26, PETRI_TRANSITIONS=26} [2023-08-30 14:35:14,188 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2023-08-30 14:35:14,188 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 26 transitions, 76 flow [2023-08-30 14:35:14,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:35:14,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:14,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:35:14,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:35:14,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 14:35:14,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:14,190 INFO L85 PathProgramCache]: Analyzing trace with hash 667126, now seen corresponding path program 1 times [2023-08-30 14:35:14,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:14,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462309289] [2023-08-30 14:35:14,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:14,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:14,275 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 14:35:14,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:14,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462309289] [2023-08-30 14:35:14,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462309289] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:35:14,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944608294] [2023-08-30 14:35:14,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:14,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:14,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:35:14,279 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 14:35:14,281 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 14:35:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:14,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:35:14,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:35:14,397 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 14:35:14,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:35:14,429 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 14:35:14,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944608294] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:35:14,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:35:14,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 14:35:14,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078814747] [2023-08-30 14:35:14,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:35:14,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:35:14,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:14,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:35:14,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:35:14,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 358 [2023-08-30 14:35:14,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 26 transitions, 76 flow. Second operand has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 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 14:35:14,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:14,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 358 [2023-08-30 14:35:14,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:14,742 INFO L130 PetriNetUnfolder]: 451/758 cut-off events. [2023-08-30 14:35:14,742 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-30 14:35:14,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1594 conditions, 758 events. 451/758 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3259 event pairs, 285 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 1586. Up to 155 conditions per place. [2023-08-30 14:35:14,747 INFO L137 encePairwiseOnDemand]: 352/358 looper letters, 90 selfloop transitions, 13 changer transitions 0/103 dead transitions. [2023-08-30 14:35:14,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 103 transitions, 470 flow [2023-08-30 14:35:14,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:35:14,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:35:14,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1051 transitions. [2023-08-30 14:35:14,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.489292364990689 [2023-08-30 14:35:14,751 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1051 transitions. [2023-08-30 14:35:14,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1051 transitions. [2023-08-30 14:35:14,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:14,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1051 transitions. [2023-08-30 14:35:14,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.16666666666666) internal successors, (1051), 6 states have internal predecessors, (1051), 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 14:35:14,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 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 14:35:14,759 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 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 14:35:14,759 INFO L175 Difference]: Start difference. First operand has 26 places, 26 transitions, 76 flow. Second operand 6 states and 1051 transitions. [2023-08-30 14:35:14,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 103 transitions, 470 flow [2023-08-30 14:35:14,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 103 transitions, 469 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:35:14,762 INFO L231 Difference]: Finished difference. Result has 33 places, 35 transitions, 168 flow [2023-08-30 14:35:14,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=33, PETRI_TRANSITIONS=35} [2023-08-30 14:35:14,763 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-08-30 14:35:14,763 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 35 transitions, 168 flow [2023-08-30 14:35:14,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 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 14:35:14,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:14,764 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 14:35:14,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 14:35:14,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:14,971 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 14:35:14,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:14,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1599525583, now seen corresponding path program 2 times [2023-08-30 14:35:14,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:14,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262614191] [2023-08-30 14:35:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:14,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:35:15,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:15,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262614191] [2023-08-30 14:35:15,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262614191] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:35:15,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566720605] [2023-08-30 14:35:15,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:35:15,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:15,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:35:15,071 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:35:15,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 14:35:15,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:35:15,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:35:15,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:35:15,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:35:15,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:35:15,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:35:15,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566720605] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:15,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:35:15,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 14:35:15,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947547415] [2023-08-30 14:35:15,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:15,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:35:15,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:15,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:35:15,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:35:15,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 358 [2023-08-30 14:35:15,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 35 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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 14:35:15,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:15,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 358 [2023-08-30 14:35:15,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:15,287 INFO L130 PetriNetUnfolder]: 451/757 cut-off events. [2023-08-30 14:35:15,288 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 14:35:15,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 757 events. 451/757 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3256 event pairs, 285 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 1609. Up to 752 conditions per place. [2023-08-30 14:35:15,293 INFO L137 encePairwiseOnDemand]: 355/358 looper letters, 28 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2023-08-30 14:35:15,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 34 transitions, 226 flow [2023-08-30 14:35:15,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:35:15,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:35:15,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2023-08-30 14:35:15,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4655493482309125 [2023-08-30 14:35:15,295 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2023-08-30 14:35:15,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2023-08-30 14:35:15,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:15,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2023-08-30 14:35:15,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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 14:35:15,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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 14:35:15,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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 14:35:15,300 INFO L175 Difference]: Start difference. First operand has 33 places, 35 transitions, 168 flow. Second operand 3 states and 500 transitions. [2023-08-30 14:35:15,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 34 transitions, 226 flow [2023-08-30 14:35:15,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 34 transitions, 207 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:35:15,305 INFO L231 Difference]: Finished difference. Result has 33 places, 34 transitions, 151 flow [2023-08-30 14:35:15,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=33, PETRI_TRANSITIONS=34} [2023-08-30 14:35:15,307 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-08-30 14:35:15,307 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 34 transitions, 151 flow [2023-08-30 14:35:15,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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 14:35:15,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:15,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:35:15,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 14:35:15,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 14:35:15,514 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 14:35:15,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:15,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1597376419, now seen corresponding path program 1 times [2023-08-30 14:35:15,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:15,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671020902] [2023-08-30 14:35:15,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:15,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:15,609 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 14:35:15,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:15,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671020902] [2023-08-30 14:35:15,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671020902] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:15,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:35:15,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:35:15,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326732466] [2023-08-30 14:35:15,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:15,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:35:15,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:15,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:35:15,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:35:15,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 358 [2023-08-30 14:35:15,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 34 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 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 14:35:15,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:15,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 358 [2023-08-30 14:35:15,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:15,767 INFO L130 PetriNetUnfolder]: 751/1247 cut-off events. [2023-08-30 14:35:15,767 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-30 14:35:15,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2627 conditions, 1247 events. 751/1247 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5939 event pairs, 165 based on Foata normal form. 0/647 useless extension candidates. Maximal degree in co-relation 2614. Up to 781 conditions per place. [2023-08-30 14:35:15,774 INFO L137 encePairwiseOnDemand]: 354/358 looper letters, 45 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-30 14:35:15,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 47 transitions, 274 flow [2023-08-30 14:35:15,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:35:15,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:35:15,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-08-30 14:35:15,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48417132216014896 [2023-08-30 14:35:15,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-08-30 14:35:15,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-08-30 14:35:15,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:15,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-08-30 14:35:15,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 14:35:15,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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 14:35:15,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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 14:35:15,780 INFO L175 Difference]: Start difference. First operand has 33 places, 34 transitions, 151 flow. Second operand 3 states and 520 transitions. [2023-08-30 14:35:15,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 47 transitions, 274 flow [2023-08-30 14:35:15,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 47 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:35:15,782 INFO L231 Difference]: Finished difference. Result has 34 places, 35 transitions, 153 flow [2023-08-30 14:35:15,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=34, PETRI_TRANSITIONS=35} [2023-08-30 14:35:15,783 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-08-30 14:35:15,783 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 35 transitions, 153 flow [2023-08-30 14:35:15,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 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 14:35:15,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:15,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:35:15,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:35:15,784 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 14:35:15,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:15,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2021009023, now seen corresponding path program 1 times [2023-08-30 14:35:15,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:15,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57278391] [2023-08-30 14:35:15,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:15,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:15,860 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 14:35:15,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:15,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57278391] [2023-08-30 14:35:15,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57278391] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:15,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:35:15,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:35:15,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677289142] [2023-08-30 14:35:15,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:15,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:35:15,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:15,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:35:15,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:35:15,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 358 [2023-08-30 14:35:15,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 35 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 14:35:15,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:15,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 358 [2023-08-30 14:35:15,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:16,046 INFO L130 PetriNetUnfolder]: 1071/1767 cut-off events. [2023-08-30 14:35:16,046 INFO L131 PetriNetUnfolder]: For 168/168 co-relation queries the response was YES. [2023-08-30 14:35:16,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4013 conditions, 1767 events. 1071/1767 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 9203 event pairs, 235 based on Foata normal form. 0/1086 useless extension candidates. Maximal degree in co-relation 3999. Up to 1141 conditions per place. [2023-08-30 14:35:16,054 INFO L137 encePairwiseOnDemand]: 354/358 looper letters, 45 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-30 14:35:16,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 281 flow [2023-08-30 14:35:16,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:35:16,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:35:16,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2023-08-30 14:35:16,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823091247672253 [2023-08-30 14:35:16,057 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2023-08-30 14:35:16,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2023-08-30 14:35:16,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:16,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2023-08-30 14:35:16,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 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 14:35:16,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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 14:35:16,061 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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 14:35:16,061 INFO L175 Difference]: Start difference. First operand has 34 places, 35 transitions, 153 flow. Second operand 3 states and 518 transitions. [2023-08-30 14:35:16,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 281 flow [2023-08-30 14:35:16,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 47 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:35:16,063 INFO L231 Difference]: Finished difference. Result has 36 places, 36 transitions, 165 flow [2023-08-30 14:35:16,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2023-08-30 14:35:16,064 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-08-30 14:35:16,064 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 165 flow [2023-08-30 14:35:16,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 14:35:16,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:16,065 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 14:35:16,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:35:16,065 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 14:35:16,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:16,065 INFO L85 PathProgramCache]: Analyzing trace with hash 2023979724, now seen corresponding path program 1 times [2023-08-30 14:35:16,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:16,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659098853] [2023-08-30 14:35:16,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:16,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:16,147 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:35:16,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:16,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659098853] [2023-08-30 14:35:16,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659098853] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:35:16,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988430441] [2023-08-30 14:35:16,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:16,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:16,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:35:16,158 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:35:16,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 14:35:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:16,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 14:35:16,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:35:16,266 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:35:16,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:35:16,320 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:35:16,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988430441] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:35:16,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:35:16,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:35:16,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257427886] [2023-08-30 14:35:16,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:35:16,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:35:16,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:16,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:35:16,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:35:16,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 358 [2023-08-30 14:35:16,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 165 flow. Second operand has 13 states, 13 states have (on average 158.15384615384616) internal successors, (2056), 13 states have internal predecessors, (2056), 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 14:35:16,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:16,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 358 [2023-08-30 14:35:16,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:17,065 INFO L130 PetriNetUnfolder]: 2355/3885 cut-off events. [2023-08-30 14:35:17,065 INFO L131 PetriNetUnfolder]: For 659/659 co-relation queries the response was YES. [2023-08-30 14:35:17,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9749 conditions, 3885 events. 2355/3885 cut-off events. For 659/659 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 20852 event pairs, 1661 based on Foata normal form. 6/2828 useless extension candidates. Maximal degree in co-relation 9733. Up to 881 conditions per place. [2023-08-30 14:35:17,087 INFO L137 encePairwiseOnDemand]: 353/358 looper letters, 213 selfloop transitions, 31 changer transitions 0/244 dead transitions. [2023-08-30 14:35:17,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 244 transitions, 1345 flow [2023-08-30 14:35:17,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:35:17,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:35:17,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2112 transitions. [2023-08-30 14:35:17,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49162011173184356 [2023-08-30 14:35:17,092 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2112 transitions. [2023-08-30 14:35:17,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2112 transitions. [2023-08-30 14:35:17,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:17,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2112 transitions. [2023-08-30 14:35:17,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 176.0) internal successors, (2112), 12 states have internal predecessors, (2112), 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 14:35:17,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 358.0) internal successors, (4654), 13 states have internal predecessors, (4654), 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 14:35:17,106 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 358.0) internal successors, (4654), 13 states have internal predecessors, (4654), 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 14:35:17,106 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 165 flow. Second operand 12 states and 2112 transitions. [2023-08-30 14:35:17,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 244 transitions, 1345 flow [2023-08-30 14:35:17,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 244 transitions, 1333 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:35:17,113 INFO L231 Difference]: Finished difference. Result has 52 places, 54 transitions, 373 flow [2023-08-30 14:35:17,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=373, PETRI_PLACES=52, PETRI_TRANSITIONS=54} [2023-08-30 14:35:17,115 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2023-08-30 14:35:17,115 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 54 transitions, 373 flow [2023-08-30 14:35:17,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.15384615384616) internal successors, (2056), 13 states have internal predecessors, (2056), 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 14:35:17,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:17,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:35:17,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 14:35:17,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:17,322 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 14:35:17,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:17,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1773228645, now seen corresponding path program 1 times [2023-08-30 14:35:17,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:17,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591450201] [2023-08-30 14:35:17,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:17,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:17,400 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 14:35:17,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:17,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591450201] [2023-08-30 14:35:17,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591450201] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:35:17,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112802894] [2023-08-30 14:35:17,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:17,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:17,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:35:17,402 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:35:17,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 14:35:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:17,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:35:17,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:35:17,536 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 14:35:17,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:35:17,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112802894] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:17,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:35:17,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-08-30 14:35:17,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170073607] [2023-08-30 14:35:17,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:17,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:35:17,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:17,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:35:17,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:35:17,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 358 [2023-08-30 14:35:17,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 54 transitions, 373 flow. Second operand has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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 14:35:17,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:17,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 358 [2023-08-30 14:35:17,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:18,194 INFO L130 PetriNetUnfolder]: 3070/5239 cut-off events. [2023-08-30 14:35:18,195 INFO L131 PetriNetUnfolder]: For 984/984 co-relation queries the response was YES. [2023-08-30 14:35:18,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12800 conditions, 5239 events. 3070/5239 cut-off events. For 984/984 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 31712 event pairs, 2178 based on Foata normal form. 220/4137 useless extension candidates. Maximal degree in co-relation 12777. Up to 3884 conditions per place. [2023-08-30 14:35:18,221 INFO L137 encePairwiseOnDemand]: 353/358 looper letters, 84 selfloop transitions, 4 changer transitions 8/96 dead transitions. [2023-08-30 14:35:18,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 96 transitions, 770 flow [2023-08-30 14:35:18,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:35:18,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:35:18,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 812 transitions. [2023-08-30 14:35:18,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45363128491620114 [2023-08-30 14:35:18,224 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 812 transitions. [2023-08-30 14:35:18,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 812 transitions. [2023-08-30 14:35:18,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:18,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 812 transitions. [2023-08-30 14:35:18,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.4) internal successors, (812), 5 states have internal predecessors, (812), 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 14:35:18,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 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 14:35:18,229 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 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 14:35:18,229 INFO L175 Difference]: Start difference. First operand has 52 places, 54 transitions, 373 flow. Second operand 5 states and 812 transitions. [2023-08-30 14:35:18,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 96 transitions, 770 flow [2023-08-30 14:35:18,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 96 transitions, 646 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-30 14:35:18,234 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 306 flow [2023-08-30 14:35:18,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2023-08-30 14:35:18,236 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 26 predicate places. [2023-08-30 14:35:18,237 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 306 flow [2023-08-30 14:35:18,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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 14:35:18,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:18,237 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:35:18,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 14:35:18,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:18,445 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 14:35:18,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:18,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1775351923, now seen corresponding path program 1 times [2023-08-30 14:35:18,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:18,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177522928] [2023-08-30 14:35:18,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:18,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:35:18,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:18,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177522928] [2023-08-30 14:35:18,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177522928] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:18,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:35:18,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:35:18,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475042755] [2023-08-30 14:35:18,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:18,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:35:18,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:18,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:35:18,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:35:18,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 358 [2023-08-30 14:35:18,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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 14:35:18,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:18,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 358 [2023-08-30 14:35:18,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:19,084 INFO L130 PetriNetUnfolder]: 2454/4183 cut-off events. [2023-08-30 14:35:19,084 INFO L131 PetriNetUnfolder]: For 1800/1800 co-relation queries the response was YES. [2023-08-30 14:35:19,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10678 conditions, 4183 events. 2454/4183 cut-off events. For 1800/1800 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 24158 event pairs, 1760 based on Foata normal form. 0/3126 useless extension candidates. Maximal degree in co-relation 10653. Up to 3884 conditions per place. [2023-08-30 14:35:19,108 INFO L137 encePairwiseOnDemand]: 353/358 looper letters, 62 selfloop transitions, 4 changer transitions 18/84 dead transitions. [2023-08-30 14:35:19,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 84 transitions, 599 flow [2023-08-30 14:35:19,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:35:19,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:35:19,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 802 transitions. [2023-08-30 14:35:19,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4480446927374302 [2023-08-30 14:35:19,111 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 802 transitions. [2023-08-30 14:35:19,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 802 transitions. [2023-08-30 14:35:19,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:19,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 802 transitions. [2023-08-30 14:35:19,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.4) internal successors, (802), 5 states have internal predecessors, (802), 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 14:35:19,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 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 14:35:19,116 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 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 14:35:19,116 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 306 flow. Second operand 5 states and 802 transitions. [2023-08-30 14:35:19,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 84 transitions, 599 flow [2023-08-30 14:35:19,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 84 transitions, 593 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 14:35:19,122 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 315 flow [2023-08-30 14:35:19,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=315, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2023-08-30 14:35:19,123 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 31 predicate places. [2023-08-30 14:35:19,123 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 315 flow [2023-08-30 14:35:19,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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 14:35:19,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:19,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:35:19,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:35:19,123 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 14:35:19,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:19,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1031000096, now seen corresponding path program 1 times [2023-08-30 14:35:19,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:19,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014201106] [2023-08-30 14:35:19,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:19,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:35:19,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:19,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014201106] [2023-08-30 14:35:19,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014201106] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:19,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:35:19,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:35:19,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967491177] [2023-08-30 14:35:19,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:19,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:35:19,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:19,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:35:19,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:35:19,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 358 [2023-08-30 14:35:19,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 315 flow. Second operand has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 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 14:35:19,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:19,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 358 [2023-08-30 14:35:19,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:19,693 INFO L130 PetriNetUnfolder]: 2306/3955 cut-off events. [2023-08-30 14:35:19,694 INFO L131 PetriNetUnfolder]: For 2439/2439 co-relation queries the response was YES. [2023-08-30 14:35:19,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10658 conditions, 3955 events. 2306/3955 cut-off events. For 2439/2439 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 23419 event pairs, 616 based on Foata normal form. 20/3282 useless extension candidates. Maximal degree in co-relation 10630. Up to 2281 conditions per place. [2023-08-30 14:35:19,724 INFO L137 encePairwiseOnDemand]: 353/358 looper letters, 61 selfloop transitions, 16 changer transitions 4/81 dead transitions. [2023-08-30 14:35:19,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 81 transitions, 558 flow [2023-08-30 14:35:19,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:35:19,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:35:19,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 799 transitions. [2023-08-30 14:35:19,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4463687150837989 [2023-08-30 14:35:19,728 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 799 transitions. [2023-08-30 14:35:19,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 799 transitions. [2023-08-30 14:35:19,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:19,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 799 transitions. [2023-08-30 14:35:19,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.8) internal successors, (799), 5 states have internal predecessors, (799), 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 14:35:19,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 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 14:35:19,734 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 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 14:35:19,735 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 315 flow. Second operand 5 states and 799 transitions. [2023-08-30 14:35:19,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 81 transitions, 558 flow [2023-08-30 14:35:19,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 81 transitions, 551 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 14:35:19,745 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 358 flow [2023-08-30 14:35:19,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=358, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-08-30 14:35:19,746 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 33 predicate places. [2023-08-30 14:35:19,746 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 358 flow [2023-08-30 14:35:19,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 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 14:35:19,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:19,747 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:35:19,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:35:19,748 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 14:35:19,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:19,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1033123352, now seen corresponding path program 1 times [2023-08-30 14:35:19,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:19,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016315164] [2023-08-30 14:35:19,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:19,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:35:19,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:19,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016315164] [2023-08-30 14:35:19,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016315164] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:19,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:35:19,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:35:19,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933997071] [2023-08-30 14:35:19,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:19,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:35:19,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:19,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:35:19,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:35:19,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 358 [2023-08-30 14:35:19,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 358 flow. Second operand has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 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 14:35:19,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:19,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 358 [2023-08-30 14:35:19,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:20,335 INFO L130 PetriNetUnfolder]: 2250/3859 cut-off events. [2023-08-30 14:35:20,335 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-08-30 14:35:20,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10644 conditions, 3859 events. 2250/3859 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 22279 event pairs, 618 based on Foata normal form. 6/3185 useless extension candidates. Maximal degree in co-relation 10615. Up to 2221 conditions per place. [2023-08-30 14:35:20,358 INFO L137 encePairwiseOnDemand]: 352/358 looper letters, 53 selfloop transitions, 15 changer transitions 9/77 dead transitions. [2023-08-30 14:35:20,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 77 transitions, 579 flow [2023-08-30 14:35:20,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:35:20,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:35:20,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 796 transitions. [2023-08-30 14:35:20,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4446927374301676 [2023-08-30 14:35:20,361 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 796 transitions. [2023-08-30 14:35:20,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 796 transitions. [2023-08-30 14:35:20,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:20,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 796 transitions. [2023-08-30 14:35:20,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 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 14:35:20,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 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 14:35:20,367 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 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 14:35:20,367 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 358 flow. Second operand 5 states and 796 transitions. [2023-08-30 14:35:20,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 77 transitions, 579 flow [2023-08-30 14:35:20,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 77 transitions, 551 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 14:35:20,374 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 361 flow [2023-08-30 14:35:20,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2023-08-30 14:35:20,375 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 35 predicate places. [2023-08-30 14:35:20,375 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 361 flow [2023-08-30 14:35:20,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 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 14:35:20,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:20,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:35:20,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:35:20,376 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 14:35:20,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:20,377 INFO L85 PathProgramCache]: Analyzing trace with hash 866507716, now seen corresponding path program 1 times [2023-08-30 14:35:20,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:20,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394362188] [2023-08-30 14:35:20,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:20,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:20,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:35:20,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:20,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394362188] [2023-08-30 14:35:20,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394362188] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:35:20,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941189847] [2023-08-30 14:35:20,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:20,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:20,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:35:20,457 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:35:20,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 14:35:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:20,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 14:35:20,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:35:20,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:35:20,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:35:20,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:35:20,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941189847] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:35:20,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:35:20,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 5, 5] total 11 [2023-08-30 14:35:20,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797171646] [2023-08-30 14:35:20,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:35:20,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:35:20,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:20,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:35:20,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:35:20,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 358 [2023-08-30 14:35:20,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 361 flow. Second operand has 13 states, 13 states have (on average 148.15384615384616) internal successors, (1926), 13 states have internal predecessors, (1926), 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 14:35:20,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:20,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 358 [2023-08-30 14:35:20,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:21,475 INFO L130 PetriNetUnfolder]: 1860/3215 cut-off events. [2023-08-30 14:35:21,475 INFO L131 PetriNetUnfolder]: For 2467/2467 co-relation queries the response was YES. [2023-08-30 14:35:21,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8881 conditions, 3215 events. 1860/3215 cut-off events. For 2467/2467 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 18532 event pairs, 560 based on Foata normal form. 20/2819 useless extension candidates. Maximal degree in co-relation 8852. Up to 1584 conditions per place. [2023-08-30 14:35:21,488 INFO L137 encePairwiseOnDemand]: 350/358 looper letters, 65 selfloop transitions, 19 changer transitions 8/92 dead transitions. [2023-08-30 14:35:21,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 92 transitions, 677 flow [2023-08-30 14:35:21,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 14:35:21,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 14:35:21,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1377 transitions. [2023-08-30 14:35:21,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273743016759777 [2023-08-30 14:35:21,492 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1377 transitions. [2023-08-30 14:35:21,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1377 transitions. [2023-08-30 14:35:21,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:21,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1377 transitions. [2023-08-30 14:35:21,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 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 14:35:21,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 358.0) internal successors, (3580), 10 states have internal predecessors, (3580), 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 14:35:21,500 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 358.0) internal successors, (3580), 10 states have internal predecessors, (3580), 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 14:35:21,500 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 361 flow. Second operand 9 states and 1377 transitions. [2023-08-30 14:35:21,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 92 transitions, 677 flow [2023-08-30 14:35:21,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 92 transitions, 636 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-30 14:35:21,505 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 393 flow [2023-08-30 14:35:21,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=393, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2023-08-30 14:35:21,506 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 37 predicate places. [2023-08-30 14:35:21,506 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 393 flow [2023-08-30 14:35:21,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 148.15384615384616) internal successors, (1926), 13 states have internal predecessors, (1926), 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 14:35:21,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:21,507 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:35:21,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 14:35:21,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 14:35:21,713 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 14:35:21,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:21,714 INFO L85 PathProgramCache]: Analyzing trace with hash 864384460, now seen corresponding path program 1 times [2023-08-30 14:35:21,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:21,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076292106] [2023-08-30 14:35:21,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:21,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:35:21,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:21,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076292106] [2023-08-30 14:35:21,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076292106] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:35:21,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783274498] [2023-08-30 14:35:21,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:21,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:21,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:35:21,801 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:35:21,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 14:35:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:21,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 14:35:21,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:35:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:35:21,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:35:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:35:22,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783274498] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:35:22,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:35:22,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-08-30 14:35:22,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829628835] [2023-08-30 14:35:22,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:35:22,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 14:35:22,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:22,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 14:35:22,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-30 14:35:22,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 358 [2023-08-30 14:35:22,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 393 flow. Second operand has 15 states, 15 states have (on average 145.73333333333332) internal successors, (2186), 15 states have internal predecessors, (2186), 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 14:35:22,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:22,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 358 [2023-08-30 14:35:22,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:23,135 INFO L130 PetriNetUnfolder]: 2561/4514 cut-off events. [2023-08-30 14:35:23,135 INFO L131 PetriNetUnfolder]: For 3154/3154 co-relation queries the response was YES. [2023-08-30 14:35:23,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12312 conditions, 4514 events. 2561/4514 cut-off events. For 3154/3154 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 27832 event pairs, 1479 based on Foata normal form. 128/4318 useless extension candidates. Maximal degree in co-relation 12283. Up to 2441 conditions per place. [2023-08-30 14:35:23,156 INFO L137 encePairwiseOnDemand]: 348/358 looper letters, 70 selfloop transitions, 24 changer transitions 66/160 dead transitions. [2023-08-30 14:35:23,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 160 transitions, 1161 flow [2023-08-30 14:35:23,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 14:35:23,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 14:35:23,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3289 transitions. [2023-08-30 14:35:23,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175977653631285 [2023-08-30 14:35:23,164 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3289 transitions. [2023-08-30 14:35:23,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3289 transitions. [2023-08-30 14:35:23,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:23,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3289 transitions. [2023-08-30 14:35:23,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 149.5) internal successors, (3289), 22 states have internal predecessors, (3289), 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 14:35:23,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 358.0) internal successors, (8234), 23 states have internal predecessors, (8234), 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 14:35:23,182 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 358.0) internal successors, (8234), 23 states have internal predecessors, (8234), 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 14:35:23,182 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 393 flow. Second operand 22 states and 3289 transitions. [2023-08-30 14:35:23,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 160 transitions, 1161 flow [2023-08-30 14:35:23,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 160 transitions, 1112 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-30 14:35:23,195 INFO L231 Difference]: Finished difference. Result has 87 places, 59 transitions, 484 flow [2023-08-30 14:35:23,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=484, PETRI_PLACES=87, PETRI_TRANSITIONS=59} [2023-08-30 14:35:23,196 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 60 predicate places. [2023-08-30 14:35:23,196 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 59 transitions, 484 flow [2023-08-30 14:35:23,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 145.73333333333332) internal successors, (2186), 15 states have internal predecessors, (2186), 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 14:35:23,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:23,197 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:35:23,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 14:35:23,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:23,403 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 14:35:23,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:23,403 INFO L85 PathProgramCache]: Analyzing trace with hash 798771196, now seen corresponding path program 1 times [2023-08-30 14:35:23,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:23,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102429810] [2023-08-30 14:35:23,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:23,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:23,453 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:35:23,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:23,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102429810] [2023-08-30 14:35:23,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102429810] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:35:23,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500911188] [2023-08-30 14:35:23,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:23,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:23,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:35:23,455 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:35:23,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 14:35:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:23,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:35:23,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:35:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:35:23,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:35:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:35:23,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500911188] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:35:23,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:35:23,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 14:35:23,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279322553] [2023-08-30 14:35:23,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:35:23,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:35:23,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:23,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:35:23,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:35:23,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 358 [2023-08-30 14:35:23,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 59 transitions, 484 flow. Second operand has 7 states, 7 states have (on average 165.14285714285714) internal successors, (1156), 7 states have internal predecessors, (1156), 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 14:35:23,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:23,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 358 [2023-08-30 14:35:23,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:24,357 INFO L130 PetriNetUnfolder]: 4998/8528 cut-off events. [2023-08-30 14:35:24,357 INFO L131 PetriNetUnfolder]: For 10857/10857 co-relation queries the response was YES. [2023-08-30 14:35:24,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25826 conditions, 8528 events. 4998/8528 cut-off events. For 10857/10857 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 57045 event pairs, 711 based on Foata normal form. 648/8960 useless extension candidates. Maximal degree in co-relation 25791. Up to 2260 conditions per place. [2023-08-30 14:35:24,422 INFO L137 encePairwiseOnDemand]: 355/358 looper letters, 101 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2023-08-30 14:35:24,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 106 transitions, 910 flow [2023-08-30 14:35:24,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:35:24,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:35:24,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1029 transitions. [2023-08-30 14:35:24,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790502793296089 [2023-08-30 14:35:24,425 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1029 transitions. [2023-08-30 14:35:24,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1029 transitions. [2023-08-30 14:35:24,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:24,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1029 transitions. [2023-08-30 14:35:24,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 171.5) internal successors, (1029), 6 states have internal predecessors, (1029), 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 14:35:24,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 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 14:35:24,431 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 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 14:35:24,431 INFO L175 Difference]: Start difference. First operand has 87 places, 59 transitions, 484 flow. Second operand 6 states and 1029 transitions. [2023-08-30 14:35:24,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 106 transitions, 910 flow [2023-08-30 14:35:24,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 106 transitions, 802 flow, removed 31 selfloop flow, removed 13 redundant places. [2023-08-30 14:35:24,466 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 450 flow [2023-08-30 14:35:24,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=450, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2023-08-30 14:35:24,466 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 48 predicate places. [2023-08-30 14:35:24,466 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 450 flow [2023-08-30 14:35:24,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 165.14285714285714) internal successors, (1156), 7 states have internal predecessors, (1156), 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 14:35:24,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:24,467 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:35:24,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 14:35:24,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:24,673 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 14:35:24,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:24,673 INFO L85 PathProgramCache]: Analyzing trace with hash 796647939, now seen corresponding path program 2 times [2023-08-30 14:35:24,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:24,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958380357] [2023-08-30 14:35:24,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:24,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:35:24,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:24,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958380357] [2023-08-30 14:35:24,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958380357] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:35:24,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104692567] [2023-08-30 14:35:24,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:35:24,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:24,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:35:24,732 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:35:24,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 14:35:24,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:35:24,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:35:24,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:35:24,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:35:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 14:35:24,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:35:24,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 14:35:24,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104692567] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:35:24,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:35:24,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 14:35:24,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968873904] [2023-08-30 14:35:24,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:35:24,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:35:24,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:24,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:35:24,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:35:24,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 358 [2023-08-30 14:35:24,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 450 flow. Second operand has 6 states, 6 states have (on average 161.33333333333334) internal successors, (968), 6 states have internal predecessors, (968), 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 14:35:24,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:24,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 358 [2023-08-30 14:35:24,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:25,956 INFO L130 PetriNetUnfolder]: 6393/10859 cut-off events. [2023-08-30 14:35:25,956 INFO L131 PetriNetUnfolder]: For 16268/16268 co-relation queries the response was YES. [2023-08-30 14:35:25,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31605 conditions, 10859 events. 6393/10859 cut-off events. For 16268/16268 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 74319 event pairs, 1647 based on Foata normal form. 324/11183 useless extension candidates. Maximal degree in co-relation 31574. Up to 3965 conditions per place. [2023-08-30 14:35:25,994 INFO L137 encePairwiseOnDemand]: 353/358 looper letters, 40 selfloop transitions, 1 changer transitions 61/102 dead transitions. [2023-08-30 14:35:25,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 102 transitions, 832 flow [2023-08-30 14:35:25,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:35:25,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:35:25,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1003 transitions. [2023-08-30 14:35:25,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46694599627560524 [2023-08-30 14:35:25,997 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1003 transitions. [2023-08-30 14:35:25,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1003 transitions. [2023-08-30 14:35:25,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:25,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1003 transitions. [2023-08-30 14:35:26,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.16666666666666) internal successors, (1003), 6 states have internal predecessors, (1003), 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 14:35:26,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 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 14:35:26,003 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 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 14:35:26,003 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 450 flow. Second operand 6 states and 1003 transitions. [2023-08-30 14:35:26,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 102 transitions, 832 flow [2023-08-30 14:35:26,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 102 transitions, 766 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-08-30 14:35:26,034 INFO L231 Difference]: Finished difference. Result has 73 places, 41 transitions, 343 flow [2023-08-30 14:35:26,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=343, PETRI_PLACES=73, PETRI_TRANSITIONS=41} [2023-08-30 14:35:26,034 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 46 predicate places. [2023-08-30 14:35:26,034 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 41 transitions, 343 flow [2023-08-30 14:35:26,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.33333333333334) internal successors, (968), 6 states have internal predecessors, (968), 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 14:35:26,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:26,035 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-08-30 14:35:26,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 14:35:26,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 14:35:26,241 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 14:35:26,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:26,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1942080116, now seen corresponding path program 2 times [2023-08-30 14:35:26,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:26,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298988916] [2023-08-30 14:35:26,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:26,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:35:26,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:26,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298988916] [2023-08-30 14:35:26,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298988916] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:35:26,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372102641] [2023-08-30 14:35:26,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:35:26,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:26,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:35:26,440 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:35:26,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 14:35:26,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:35:26,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:35:26,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:35:26,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:35:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:35:26,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:35:26,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372102641] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:26,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:35:26,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-08-30 14:35:26,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130001459] [2023-08-30 14:35:26,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:26,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:35:26,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:26,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:35:26,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-08-30 14:35:26,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 358 [2023-08-30 14:35:26,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 41 transitions, 343 flow. Second operand has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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 14:35:26,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:26,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 358 [2023-08-30 14:35:26,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:26,608 INFO L130 PetriNetUnfolder]: 12/56 cut-off events. [2023-08-30 14:35:26,609 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2023-08-30 14:35:26,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 56 events. 12/56 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 121 event pairs, 0 based on Foata normal form. 3/59 useless extension candidates. Maximal degree in co-relation 230. Up to 56 conditions per place. [2023-08-30 14:35:26,609 INFO L137 encePairwiseOnDemand]: 356/358 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2023-08-30 14:35:26,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 38 transitions, 346 flow [2023-08-30 14:35:26,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:35:26,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:35:26,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 476 transitions. [2023-08-30 14:35:26,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44320297951582865 [2023-08-30 14:35:26,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 476 transitions. [2023-08-30 14:35:26,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 476 transitions. [2023-08-30 14:35:26,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:26,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 476 transitions. [2023-08-30 14:35:26,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 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 14:35:26,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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 14:35:26,615 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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 14:35:26,615 INFO L175 Difference]: Start difference. First operand has 73 places, 41 transitions, 343 flow. Second operand 3 states and 476 transitions. [2023-08-30 14:35:26,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 38 transitions, 346 flow [2023-08-30 14:35:26,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 38 transitions, 229 flow, removed 2 selfloop flow, removed 19 redundant places. [2023-08-30 14:35:26,617 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-08-30 14:35:26,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-08-30 14:35:26,617 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2023-08-30 14:35:26,618 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-08-30 14:35:26,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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 14:35:26,620 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2023-08-30 14:35:26,620 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-08-30 14:35:26,620 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-08-30 14:35:26,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-08-30 14:35:26,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-08-30 14:35:26,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-08-30 14:35:26,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2023-08-30 14:35:26,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2023-08-30 14:35:26,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2023-08-30 14:35:26,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2023-08-30 14:35:26,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-08-30 14:35:26,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-08-30 14:35:26,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-08-30 14:35:26,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-08-30 14:35:26,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 14:35:26,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 14:35:26,828 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:35:26,833 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 14:35:26,833 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 14:35:26,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 02:35:26 BasicIcfg [2023-08-30 14:35:26,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 14:35:26,836 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 14:35:26,836 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 14:35:26,837 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 14:35:26,837 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:35:08" (3/4) ... [2023-08-30 14:35:26,839 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 14:35:26,844 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 14:35:26,844 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 14:35:26,851 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-08-30 14:35:26,851 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 14:35:26,851 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 14:35:26,852 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 14:35:26,893 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 14:35:26,894 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 14:35:26,894 INFO L158 Benchmark]: Toolchain (without parser) took 19250.70ms. Allocated memory was 71.3MB in the beginning and 1.1GB in the end (delta: 981.5MB). Free memory was 48.3MB in the beginning and 740.9MB in the end (delta: -692.6MB). Peak memory consumption was 289.8MB. Max. memory is 16.1GB. [2023-08-30 14:35:26,895 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 71.3MB. Free memory is still 48.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 14:35:26,895 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.09ms. Allocated memory is still 71.3MB. Free memory was 48.1MB in the beginning and 36.9MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 14:35:26,895 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.72ms. Allocated memory is still 71.3MB. Free memory was 36.9MB in the beginning and 35.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 14:35:26,895 INFO L158 Benchmark]: Boogie Preprocessor took 41.64ms. Allocated memory is still 71.3MB. Free memory was 35.2MB in the beginning and 33.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 14:35:26,896 INFO L158 Benchmark]: RCFGBuilder took 547.31ms. Allocated memory is still 71.3MB. Free memory was 33.6MB in the beginning and 37.1MB in the end (delta: -3.5MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2023-08-30 14:35:26,896 INFO L158 Benchmark]: TraceAbstraction took 18367.19ms. Allocated memory was 71.3MB in the beginning and 1.1GB in the end (delta: 981.5MB). Free memory was 36.5MB in the beginning and 744.0MB in the end (delta: -707.5MB). Peak memory consumption was 277.1MB. Max. memory is 16.1GB. [2023-08-30 14:35:26,896 INFO L158 Benchmark]: Witness Printer took 57.47ms. Allocated memory is still 1.1GB. Free memory was 744.0MB in the beginning and 740.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 14:35:26,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 71.3MB. Free memory is still 48.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 200.09ms. Allocated memory is still 71.3MB. Free memory was 48.1MB in the beginning and 36.9MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.72ms. Allocated memory is still 71.3MB. Free memory was 36.9MB in the beginning and 35.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.64ms. Allocated memory is still 71.3MB. Free memory was 35.2MB in the beginning and 33.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 547.31ms. Allocated memory is still 71.3MB. Free memory was 33.6MB in the beginning and 37.1MB in the end (delta: -3.5MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * TraceAbstraction took 18367.19ms. Allocated memory was 71.3MB in the beginning and 1.1GB in the end (delta: 981.5MB). Free memory was 36.5MB in the beginning and 744.0MB in the end (delta: -707.5MB). Peak memory consumption was 277.1MB. Max. memory is 16.1GB. * Witness Printer took 57.47ms. Allocated memory is still 1.1GB. Free memory was 744.0MB in the beginning and 740.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.8s, 152 PlacesBefore, 27 PlacesAfterwards, 159 TransitionsBefore, 25 TransitionsAfterwards, 1400 CoEnabledTransitionPairs, 7 FixpointIterations, 101 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 16 TrivialYvCompositions, 8 ConcurrentYvCompositions, 9 ChoiceCompositions, 181 TotalNumberOfCompositions, 1963 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1618, independent: 1560, independent conditional: 0, independent unconditional: 1560, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 817, independent: 804, independent conditional: 0, independent unconditional: 804, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1618, independent: 756, independent conditional: 0, independent unconditional: 756, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 817, unknown conditional: 0, unknown unconditional: 817] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 201 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.2s, OverallIterations: 16, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2777 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2267 mSDsluCounter, 579 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 411 mSDsCounter, 160 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3489 IncrementalHoareTripleChecker+Invalid, 3649 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 160 mSolverCounterUnsat, 168 mSDtfsCounter, 3489 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 205 GetRequests, 89 SyntacticMatches, 4 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=484occurred in iteration=13, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 206 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 229 ConstructedInterpolants, 0 QuantifiedInterpolants, 911 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1362 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 31 InterpolantComputations, 10 PerfectInterpolantSequences, 126/239 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 14:35:26,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE