./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-commit-1.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 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:31:01,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:31:01,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:31:01,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:31:01,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:31:01,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:31:01,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:31:01,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:31:01,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:31:01,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:31:01,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:31:01,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:31:01,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:31:01,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:31:01,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:31:01,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:31:01,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:31:01,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:31:01,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:31:01,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:31:01,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:31:01,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:31:01,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:31:01,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:31:01,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:31:01,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:31:01,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:31:01,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:31:01,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:31:01,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:31:01,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:31:01,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:31:01,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:31:01,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:31:01,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:31:01,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:31:01,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:31:01,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:31:01,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:31:01,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:31:01,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:31:01,943 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:31:01,977 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:31:01,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:31:01,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:31:01,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:31:01,979 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:31:01,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:31:01,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:31:01,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:31:01,981 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:31:01,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:31:01,981 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:31:01,982 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:31:01,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:31:01,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:31:01,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:31:01,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:31:01,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:31:01,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:31:01,983 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:31:01,983 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:31:01,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:31:01,983 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:31:01,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:31:01,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:31:01,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:31:01,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:31:01,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:31:01,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:31:01,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:31:01,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:31:01,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:31:01,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:31:01,985 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:31:01,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:31:01,986 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:31:01,986 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:31:01,986 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:31:01,986 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:31:02,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:31:02,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:31:02,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:31:02,292 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:31:02,292 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:31:02,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c [2023-08-30 11:31:03,477 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:31:03,682 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:31:03,683 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c [2023-08-30 11:31:03,699 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ca8685bf/ba3fe75b05294220ac990098fa08b933/FLAG0ad2150d9 [2023-08-30 11:31:03,716 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ca8685bf/ba3fe75b05294220ac990098fa08b933 [2023-08-30 11:31:03,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:31:03,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:31:03,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:31:03,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:31:03,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:31:03,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:31:03" (1/1) ... [2023-08-30 11:31:03,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@86f6442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:03, skipping insertion in model container [2023-08-30 11:31:03,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:31:03" (1/1) ... [2023-08-30 11:31:03,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:31:03,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:31:03,916 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/popl20-commit-1.wvr.c[4604,4617] [2023-08-30 11:31:03,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:31:03,937 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:31:03,975 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/popl20-commit-1.wvr.c[4604,4617] [2023-08-30 11:31:03,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:31:03,984 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:31:03,984 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:31:03,990 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:31:03,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:03 WrapperNode [2023-08-30 11:31:03,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:31:03,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:31:03,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:31:03,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:31:04,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:03" (1/1) ... [2023-08-30 11:31:04,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:03" (1/1) ... [2023-08-30 11:31:04,069 INFO L138 Inliner]: procedures = 25, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 369 [2023-08-30 11:31:04,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:31:04,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:31:04,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:31:04,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:31:04,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:03" (1/1) ... [2023-08-30 11:31:04,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:03" (1/1) ... [2023-08-30 11:31:04,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:03" (1/1) ... [2023-08-30 11:31:04,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:03" (1/1) ... [2023-08-30 11:31:04,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:03" (1/1) ... [2023-08-30 11:31:04,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:03" (1/1) ... [2023-08-30 11:31:04,123 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:03" (1/1) ... [2023-08-30 11:31:04,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:03" (1/1) ... [2023-08-30 11:31:04,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:31:04,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:31:04,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:31:04,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:31:04,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:03" (1/1) ... [2023-08-30 11:31:04,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:31:04,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:31:04,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:31:04,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:31:04,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:31:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:31:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:31:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:31:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:31:04,204 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:31:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:31:04,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:31:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:31:04,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:31:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:31:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:31:04,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:31:04,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:31:04,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:31:04,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:31:04,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:31:04,207 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:31:04,320 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:31:04,322 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:31:04,838 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:31:05,215 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:31:05,215 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 11:31:05,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:31:05 BoogieIcfgContainer [2023-08-30 11:31:05,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:31:05,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:31:05,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:31:05,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:31:05,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:31:03" (1/3) ... [2023-08-30 11:31:05,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2bc569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:31:05, skipping insertion in model container [2023-08-30 11:31:05,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:03" (2/3) ... [2023-08-30 11:31:05,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2bc569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:31:05, skipping insertion in model container [2023-08-30 11:31:05,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:31:05" (3/3) ... [2023-08-30 11:31:05,230 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2023-08-30 11:31:05,237 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:31:05,245 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:31:05,245 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-08-30 11:31:05,245 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:31:05,364 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:31:05,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 274 transitions, 572 flow [2023-08-30 11:31:05,468 INFO L130 PetriNetUnfolder]: 19/271 cut-off events. [2023-08-30 11:31:05,469 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:31:05,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 271 events. 19/271 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 221 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 233. Up to 2 conditions per place. [2023-08-30 11:31:05,474 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 274 transitions, 572 flow [2023-08-30 11:31:05,489 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 253 transitions, 521 flow [2023-08-30 11:31:05,492 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:31:05,500 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 245 places, 253 transitions, 521 flow [2023-08-30 11:31:05,502 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 245 places, 253 transitions, 521 flow [2023-08-30 11:31:05,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 253 transitions, 521 flow [2023-08-30 11:31:05,548 INFO L130 PetriNetUnfolder]: 18/253 cut-off events. [2023-08-30 11:31:05,548 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:31:05,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 253 events. 18/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 218 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 233. Up to 2 conditions per place. [2023-08-30 11:31:05,551 INFO L119 LiptonReduction]: Number of co-enabled transitions 2700 [2023-08-30 11:31:14,561 INFO L134 LiptonReduction]: Checked pairs total: 8649 [2023-08-30 11:31:14,561 INFO L136 LiptonReduction]: Total number of compositions: 259 [2023-08-30 11:31:14,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:31:14,580 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;@5d838014, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:31:14,580 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-08-30 11:31:14,582 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:31:14,583 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:31:14,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:14,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:31:14,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:31:14,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:14,588 INFO L85 PathProgramCache]: Analyzing trace with hash 43149, now seen corresponding path program 1 times [2023-08-30 11:31:14,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:14,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711737263] [2023-08-30 11:31:14,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:14,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:14,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:14,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:14,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711737263] [2023-08-30 11:31:14,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711737263] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:14,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:31:14,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:31:14,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254859867] [2023-08-30 11:31:14,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:14,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:31:14,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:14,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:31:14,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:31:14,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 533 [2023-08-30 11:31:14,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:14,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:14,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 533 [2023-08-30 11:31:14,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:15,589 INFO L130 PetriNetUnfolder]: 2876/4126 cut-off events. [2023-08-30 11:31:15,590 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2023-08-30 11:31:15,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8537 conditions, 4126 events. 2876/4126 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 19318 event pairs, 2304 based on Foata normal form. 0/2171 useless extension candidates. Maximal degree in co-relation 3870. Up to 2064 conditions per place. [2023-08-30 11:31:15,610 INFO L137 encePairwiseOnDemand]: 513/533 looper letters, 71 selfloop transitions, 9 changer transitions 0/80 dead transitions. [2023-08-30 11:31:15,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 80 transitions, 350 flow [2023-08-30 11:31:15,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:31:15,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:31:15,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 762 transitions. [2023-08-30 11:31:15,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47654784240150094 [2023-08-30 11:31:15,625 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 762 transitions. [2023-08-30 11:31:15,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 762 transitions. [2023-08-30 11:31:15,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:15,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 762 transitions. [2023-08-30 11:31:15,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:15,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:15,639 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:15,641 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 115 flow. Second operand 3 states and 762 transitions. [2023-08-30 11:31:15,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 80 transitions, 350 flow [2023-08-30 11:31:15,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 80 transitions, 332 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:31:15,649 INFO L231 Difference]: Finished difference. Result has 45 places, 50 transitions, 164 flow [2023-08-30 11:31:15,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=45, PETRI_TRANSITIONS=50} [2023-08-30 11:31:15,657 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -9 predicate places. [2023-08-30 11:31:15,659 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 50 transitions, 164 flow [2023-08-30 11:31:15,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:15,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:15,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:31:15,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:31:15,662 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:31:15,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:15,664 INFO L85 PathProgramCache]: Analyzing trace with hash 43148, now seen corresponding path program 1 times [2023-08-30 11:31:15,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:15,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774417486] [2023-08-30 11:31:15,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:15,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:15,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:15,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:15,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774417486] [2023-08-30 11:31:15,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774417486] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:15,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:31:15,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:31:15,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673739998] [2023-08-30 11:31:15,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:15,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:31:15,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:15,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:31:15,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:31:15,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 533 [2023-08-30 11:31:15,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 50 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:15,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:15,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 533 [2023-08-30 11:31:15,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:16,295 INFO L130 PetriNetUnfolder]: 2873/4120 cut-off events. [2023-08-30 11:31:16,296 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 11:31:16,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8464 conditions, 4120 events. 2873/4120 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 19318 event pairs, 2304 based on Foata normal form. 2/2179 useless extension candidates. Maximal degree in co-relation 4212. Up to 4120 conditions per place. [2023-08-30 11:31:16,318 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 43 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-08-30 11:31:16,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 222 flow [2023-08-30 11:31:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:31:16,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:31:16,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2023-08-30 11:31:16,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44090056285178236 [2023-08-30 11:31:16,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2023-08-30 11:31:16,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2023-08-30 11:31:16,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:16,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2023-08-30 11:31:16,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:16,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:16,327 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:16,327 INFO L175 Difference]: Start difference. First operand has 45 places, 50 transitions, 164 flow. Second operand 3 states and 705 transitions. [2023-08-30 11:31:16,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 222 flow [2023-08-30 11:31:16,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:31:16,329 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 124 flow [2023-08-30 11:31:16,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2023-08-30 11:31:16,330 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -12 predicate places. [2023-08-30 11:31:16,330 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 124 flow [2023-08-30 11:31:16,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:16,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:16,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:31:16,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 11:31:16,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:31:16,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:16,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1338856, now seen corresponding path program 1 times [2023-08-30 11:31:16,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:16,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335553405] [2023-08-30 11:31:16,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:16,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:16,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:16,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:16,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335553405] [2023-08-30 11:31:16,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335553405] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:31:16,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015140189] [2023-08-30 11:31:16,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:16,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:31:16,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:31:16,399 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:31:16,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:31:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:16,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:31:16,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:31:16,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:16,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:31:16,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:16,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015140189] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:31:16,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:31:16,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 11:31:16,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328171511] [2023-08-30 11:31:16,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:31:16,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 11:31:16,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:16,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 11:31:16,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:31:16,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 533 [2023-08-30 11:31:16,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:16,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:16,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 533 [2023-08-30 11:31:16,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:18,002 INFO L130 PetriNetUnfolder]: 7181/10294 cut-off events. [2023-08-30 11:31:18,002 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-30 11:31:18,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21122 conditions, 10294 events. 7181/10294 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 55210 event pairs, 5760 based on Foata normal form. 0/5431 useless extension candidates. Maximal degree in co-relation 21114. Up to 2064 conditions per place. [2023-08-30 11:31:18,101 INFO L137 encePairwiseOnDemand]: 524/533 looper letters, 158 selfloop transitions, 21 changer transitions 0/179 dead transitions. [2023-08-30 11:31:18,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 179 transitions, 806 flow [2023-08-30 11:31:18,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:31:18,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:31:18,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1514 transitions. [2023-08-30 11:31:18,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734208880550344 [2023-08-30 11:31:18,107 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1514 transitions. [2023-08-30 11:31:18,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1514 transitions. [2023-08-30 11:31:18,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:18,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1514 transitions. [2023-08-30 11:31:18,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 252.33333333333334) internal successors, (1514), 6 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:18,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 533.0) internal successors, (3731), 7 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:18,118 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 533.0) internal successors, (3731), 7 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:18,118 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 124 flow. Second operand 6 states and 1514 transitions. [2023-08-30 11:31:18,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 179 transitions, 806 flow [2023-08-30 11:31:18,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 179 transitions, 805 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:31:18,124 INFO L231 Difference]: Finished difference. Result has 49 places, 59 transitions, 273 flow [2023-08-30 11:31:18,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=273, PETRI_PLACES=49, PETRI_TRANSITIONS=59} [2023-08-30 11:31:18,125 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-08-30 11:31:18,125 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 59 transitions, 273 flow [2023-08-30 11:31:18,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:18,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:18,127 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:31:18,136 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 11:31:18,332 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 11:31:18,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:31:18,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:18,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1232381773, now seen corresponding path program 2 times [2023-08-30 11:31:18,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:18,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355490158] [2023-08-30 11:31:18,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:18,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:18,477 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 11:31:18,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:18,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355490158] [2023-08-30 11:31:18,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355490158] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:31:18,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104002350] [2023-08-30 11:31:18,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:31:18,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:31:18,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:31:18,482 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 11:31:18,500 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 11:31:18,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:31:18,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:31:18,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:31:18,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:31:18,604 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 11:31:18,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:31:18,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104002350] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:18,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:31:18,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:31:18,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13832321] [2023-08-30 11:31:18,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:18,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:31:18,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:18,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:31:18,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:31:18,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 533 [2023-08-30 11:31:18,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 59 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:18,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:18,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 533 [2023-08-30 11:31:18,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:19,789 INFO L130 PetriNetUnfolder]: 7181/10291 cut-off events. [2023-08-30 11:31:19,790 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-30 11:31:19,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21155 conditions, 10291 events. 7181/10291 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 55189 event pairs, 5760 based on Foata normal form. 3/5440 useless extension candidates. Maximal degree in co-relation 21143. Up to 10291 conditions per place. [2023-08-30 11:31:19,834 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 11:31:19,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 56 transitions, 355 flow [2023-08-30 11:31:19,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:31:19,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:31:19,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 711 transitions. [2023-08-30 11:31:19,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4446529080675422 [2023-08-30 11:31:19,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 711 transitions. [2023-08-30 11:31:19,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 711 transitions. [2023-08-30 11:31:19,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:19,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 711 transitions. [2023-08-30 11:31:19,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:19,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:19,842 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:19,843 INFO L175 Difference]: Start difference. First operand has 49 places, 59 transitions, 273 flow. Second operand 3 states and 711 transitions. [2023-08-30 11:31:19,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 56 transitions, 355 flow [2023-08-30 11:31:19,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 56 transitions, 283 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-08-30 11:31:19,845 INFO L231 Difference]: Finished difference. Result has 43 places, 56 transitions, 173 flow [2023-08-30 11:31:19,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=43, PETRI_TRANSITIONS=56} [2023-08-30 11:31:19,846 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2023-08-30 11:31:19,846 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 56 transitions, 173 flow [2023-08-30 11:31:19,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:19,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:19,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:31:19,855 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 11:31:20,052 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 11:31:20,052 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:31:20,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:20,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1250533356, now seen corresponding path program 1 times [2023-08-30 11:31:20,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:20,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459416816] [2023-08-30 11:31:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:20,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:20,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:20,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459416816] [2023-08-30 11:31:20,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459416816] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:20,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:31:20,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:31:20,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391866380] [2023-08-30 11:31:20,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:20,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:31:20,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:20,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:31:20,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:31:20,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 533 [2023-08-30 11:31:20,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 56 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:20,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:20,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 533 [2023-08-30 11:31:20,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:21,387 INFO L130 PetriNetUnfolder]: 8181/11801 cut-off events. [2023-08-30 11:31:21,387 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2023-08-30 11:31:21,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24199 conditions, 11801 events. 8181/11801 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 67235 event pairs, 2295 based on Foata normal form. 0/6341 useless extension candidates. Maximal degree in co-relation 24190. Up to 10346 conditions per place. [2023-08-30 11:31:21,447 INFO L137 encePairwiseOnDemand]: 528/533 looper letters, 69 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2023-08-30 11:31:21,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 72 transitions, 353 flow [2023-08-30 11:31:21,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:31:21,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:31:21,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 726 transitions. [2023-08-30 11:31:21,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540337711069418 [2023-08-30 11:31:21,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 726 transitions. [2023-08-30 11:31:21,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 726 transitions. [2023-08-30 11:31:21,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:21,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 726 transitions. [2023-08-30 11:31:21,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:21,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:21,457 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:21,457 INFO L175 Difference]: Start difference. First operand has 43 places, 56 transitions, 173 flow. Second operand 3 states and 726 transitions. [2023-08-30 11:31:21,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 72 transitions, 353 flow [2023-08-30 11:31:21,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 72 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:31:21,460 INFO L231 Difference]: Finished difference. Result has 45 places, 58 transitions, 193 flow [2023-08-30 11:31:21,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=45, PETRI_TRANSITIONS=58} [2023-08-30 11:31:21,461 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -9 predicate places. [2023-08-30 11:31:21,461 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 58 transitions, 193 flow [2023-08-30 11:31:21,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:21,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:21,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:31:21,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:31:21,462 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:31:21,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:21,463 INFO L85 PathProgramCache]: Analyzing trace with hash -828258699, now seen corresponding path program 1 times [2023-08-30 11:31:21,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:21,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465119356] [2023-08-30 11:31:21,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:21,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:21,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:21,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465119356] [2023-08-30 11:31:21,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465119356] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:21,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:31:21,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:31:21,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178800147] [2023-08-30 11:31:21,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:21,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:31:21,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:21,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:31:21,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:31:21,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 533 [2023-08-30 11:31:21,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 58 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:21,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:21,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 533 [2023-08-30 11:31:21,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:22,523 INFO L130 PetriNetUnfolder]: 7741/11231 cut-off events. [2023-08-30 11:31:22,523 INFO L131 PetriNetUnfolder]: For 940/940 co-relation queries the response was YES. [2023-08-30 11:31:22,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24531 conditions, 11231 events. 7741/11231 cut-off events. For 940/940 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 61258 event pairs, 2675 based on Foata normal form. 0/7671 useless extension candidates. Maximal degree in co-relation 24520. Up to 8826 conditions per place. [2023-08-30 11:31:22,582 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 71 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-08-30 11:31:22,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 73 transitions, 374 flow [2023-08-30 11:31:22,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:31:22,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:31:22,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 726 transitions. [2023-08-30 11:31:22,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540337711069418 [2023-08-30 11:31:22,585 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 726 transitions. [2023-08-30 11:31:22,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 726 transitions. [2023-08-30 11:31:22,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:22,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 726 transitions. [2023-08-30 11:31:22,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:22,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:22,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:22,591 INFO L175 Difference]: Start difference. First operand has 45 places, 58 transitions, 193 flow. Second operand 3 states and 726 transitions. [2023-08-30 11:31:22,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 73 transitions, 374 flow [2023-08-30 11:31:22,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 73 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:31:22,597 INFO L231 Difference]: Finished difference. Result has 47 places, 58 transitions, 200 flow [2023-08-30 11:31:22,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=47, PETRI_TRANSITIONS=58} [2023-08-30 11:31:22,600 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-08-30 11:31:22,600 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 58 transitions, 200 flow [2023-08-30 11:31:22,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:22,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:22,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:31:22,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:31:22,601 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:31:22,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:22,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1387614526, now seen corresponding path program 1 times [2023-08-30 11:31:22,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:22,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402811221] [2023-08-30 11:31:22,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:22,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:22,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:22,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:22,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402811221] [2023-08-30 11:31:22,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402811221] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:22,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:31:22,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:31:22,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323469384] [2023-08-30 11:31:22,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:22,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:31:22,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:22,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:31:22,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:31:22,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 533 [2023-08-30 11:31:22,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 58 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 212.5) internal successors, (850), 4 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:22,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:22,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 533 [2023-08-30 11:31:22,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:23,570 INFO L130 PetriNetUnfolder]: 7931/11636 cut-off events. [2023-08-30 11:31:23,570 INFO L131 PetriNetUnfolder]: For 1615/1615 co-relation queries the response was YES. [2023-08-30 11:31:23,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26793 conditions, 11636 events. 7931/11636 cut-off events. For 1615/1615 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 66080 event pairs, 6525 based on Foata normal form. 70/8991 useless extension candidates. Maximal degree in co-relation 26780. Up to 11230 conditions per place. [2023-08-30 11:31:23,611 INFO L137 encePairwiseOnDemand]: 528/533 looper letters, 55 selfloop transitions, 2 changer transitions 30/87 dead transitions. [2023-08-30 11:31:23,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 87 transitions, 468 flow [2023-08-30 11:31:23,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:31:23,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:31:23,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 897 transitions. [2023-08-30 11:31:23,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42073170731707316 [2023-08-30 11:31:23,615 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 897 transitions. [2023-08-30 11:31:23,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 897 transitions. [2023-08-30 11:31:23,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:23,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 897 transitions. [2023-08-30 11:31:23,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.25) internal successors, (897), 4 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:23,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:23,622 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:23,622 INFO L175 Difference]: Start difference. First operand has 47 places, 58 transitions, 200 flow. Second operand 4 states and 897 transitions. [2023-08-30 11:31:23,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 87 transitions, 468 flow [2023-08-30 11:31:23,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 87 transitions, 466 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:31:23,625 INFO L231 Difference]: Finished difference. Result has 50 places, 57 transitions, 202 flow [2023-08-30 11:31:23,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=50, PETRI_TRANSITIONS=57} [2023-08-30 11:31:23,625 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-08-30 11:31:23,626 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 57 transitions, 202 flow [2023-08-30 11:31:23,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 212.5) internal successors, (850), 4 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:23,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:23,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:31:23,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 11:31:23,627 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:31:23,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:23,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1209854237, now seen corresponding path program 1 times [2023-08-30 11:31:23,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:23,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288651654] [2023-08-30 11:31:23,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:23,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:23,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:23,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:23,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288651654] [2023-08-30 11:31:23,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288651654] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:31:23,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274419534] [2023-08-30 11:31:23,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:23,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:31:23,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:31:23,725 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 11:31:23,756 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 11:31:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:23,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:31:23,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:31:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:31:23,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:31:23,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274419534] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:23,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:31:23,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 11:31:23,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974595514] [2023-08-30 11:31:23,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:23,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:31:23,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:23,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:31:23,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:31:23,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 533 [2023-08-30 11:31:23,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 57 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:23,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:23,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 533 [2023-08-30 11:31:23,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:24,398 INFO L130 PetriNetUnfolder]: 4225/6205 cut-off events. [2023-08-30 11:31:24,399 INFO L131 PetriNetUnfolder]: For 1580/1580 co-relation queries the response was YES. [2023-08-30 11:31:24,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14523 conditions, 6205 events. 4225/6205 cut-off events. For 1580/1580 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 32006 event pairs, 3295 based on Foata normal form. 830/6106 useless extension candidates. Maximal degree in co-relation 14508. Up to 6205 conditions per place. [2023-08-30 11:31:24,417 INFO L137 encePairwiseOnDemand]: 528/533 looper letters, 52 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-08-30 11:31:24,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 296 flow [2023-08-30 11:31:24,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:31:24,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:31:24,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 720 transitions. [2023-08-30 11:31:24,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.450281425891182 [2023-08-30 11:31:24,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 720 transitions. [2023-08-30 11:31:24,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 720 transitions. [2023-08-30 11:31:24,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:24,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 720 transitions. [2023-08-30 11:31:24,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:24,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:24,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:24,430 INFO L175 Difference]: Start difference. First operand has 50 places, 57 transitions, 202 flow. Second operand 3 states and 720 transitions. [2023-08-30 11:31:24,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 296 flow [2023-08-30 11:31:24,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 290 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 11:31:24,435 INFO L231 Difference]: Finished difference. Result has 45 places, 53 transitions, 186 flow [2023-08-30 11:31:24,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=45, PETRI_TRANSITIONS=53} [2023-08-30 11:31:24,436 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -9 predicate places. [2023-08-30 11:31:24,436 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 53 transitions, 186 flow [2023-08-30 11:31:24,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:24,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:24,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:31:24,444 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 11:31:24,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:31:24,639 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:31:24,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:24,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1149223236, now seen corresponding path program 1 times [2023-08-30 11:31:24,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:24,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200157998] [2023-08-30 11:31:24,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:24,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:31:24,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:24,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200157998] [2023-08-30 11:31:24,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200157998] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:24,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:31:24,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:31:24,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261914223] [2023-08-30 11:31:24,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:24,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:31:24,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:24,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:31:24,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:31:24,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 533 [2023-08-30 11:31:24,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 53 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:24,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:24,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 533 [2023-08-30 11:31:24,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:25,303 INFO L130 PetriNetUnfolder]: 3695/5465 cut-off events. [2023-08-30 11:31:25,304 INFO L131 PetriNetUnfolder]: For 1200/1200 co-relation queries the response was YES. [2023-08-30 11:31:25,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12831 conditions, 5465 events. 3695/5465 cut-off events. For 1200/1200 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 26734 event pairs, 1325 based on Foata normal form. 230/4806 useless extension candidates. Maximal degree in co-relation 12816. Up to 4521 conditions per place. [2023-08-30 11:31:25,315 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 61 selfloop transitions, 2 changer transitions 6/69 dead transitions. [2023-08-30 11:31:25,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 69 transitions, 366 flow [2023-08-30 11:31:25,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:31:25,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:31:25,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 730 transitions. [2023-08-30 11:31:25,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45653533458411505 [2023-08-30 11:31:25,317 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 730 transitions. [2023-08-30 11:31:25,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 730 transitions. [2023-08-30 11:31:25,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:25,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 730 transitions. [2023-08-30 11:31:25,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:25,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:25,321 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:25,321 INFO L175 Difference]: Start difference. First operand has 45 places, 53 transitions, 186 flow. Second operand 3 states and 730 transitions. [2023-08-30 11:31:25,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 69 transitions, 366 flow [2023-08-30 11:31:25,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 69 transitions, 365 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:31:25,323 INFO L231 Difference]: Finished difference. Result has 47 places, 54 transitions, 199 flow [2023-08-30 11:31:25,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=47, PETRI_TRANSITIONS=54} [2023-08-30 11:31:25,323 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-08-30 11:31:25,323 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 54 transitions, 199 flow [2023-08-30 11:31:25,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:25,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:25,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:31:25,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 11:31:25,324 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:31:25,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:25,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1266174205, now seen corresponding path program 1 times [2023-08-30 11:31:25,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:25,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461558906] [2023-08-30 11:31:25,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:25,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:25,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:31:25,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:25,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461558906] [2023-08-30 11:31:25,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461558906] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:25,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:31:25,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:31:25,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916893738] [2023-08-30 11:31:25,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:25,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:31:25,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:25,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:31:25,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:31:25,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 533 [2023-08-30 11:31:25,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 54 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 219.25) internal successors, (877), 4 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:25,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:25,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 533 [2023-08-30 11:31:25,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:25,873 INFO L130 PetriNetUnfolder]: 3019/4497 cut-off events. [2023-08-30 11:31:25,873 INFO L131 PetriNetUnfolder]: For 1156/1156 co-relation queries the response was YES. [2023-08-30 11:31:25,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11273 conditions, 4497 events. 3019/4497 cut-off events. For 1156/1156 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 22253 event pairs, 2337 based on Foata normal form. 8/3952 useless extension candidates. Maximal degree in co-relation 11256. Up to 4358 conditions per place. [2023-08-30 11:31:25,886 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 47 selfloop transitions, 7 changer transitions 16/70 dead transitions. [2023-08-30 11:31:25,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 381 flow [2023-08-30 11:31:25,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:31:25,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:31:25,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1131 transitions. [2023-08-30 11:31:25,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424390243902439 [2023-08-30 11:31:25,889 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1131 transitions. [2023-08-30 11:31:25,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1131 transitions. [2023-08-30 11:31:25,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:25,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1131 transitions. [2023-08-30 11:31:25,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 226.2) internal successors, (1131), 5 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:25,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:25,897 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:25,897 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 199 flow. Second operand 5 states and 1131 transitions. [2023-08-30 11:31:25,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 381 flow [2023-08-30 11:31:25,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 379 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:31:25,901 INFO L231 Difference]: Finished difference. Result has 52 places, 54 transitions, 223 flow [2023-08-30 11:31:25,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=223, PETRI_PLACES=52, PETRI_TRANSITIONS=54} [2023-08-30 11:31:25,901 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-08-30 11:31:25,902 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 54 transitions, 223 flow [2023-08-30 11:31:25,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 219.25) internal successors, (877), 4 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:25,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:25,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:31:25,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 11:31:25,903 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:31:25,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:25,903 INFO L85 PathProgramCache]: Analyzing trace with hash -636996558, now seen corresponding path program 1 times [2023-08-30 11:31:25,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:25,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380546000] [2023-08-30 11:31:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:25,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:31:26,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:26,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380546000] [2023-08-30 11:31:26,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380546000] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:31:26,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673434045] [2023-08-30 11:31:26,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:26,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:31:26,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:31:26,021 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 11:31:26,043 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 11:31:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:26,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:31:26,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:31:26,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:31:26,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:31:26,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673434045] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:26,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:31:26,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-30 11:31:26,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288510948] [2023-08-30 11:31:26,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:26,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:31:26,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:26,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:31:26,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:31:26,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 533 [2023-08-30 11:31:26,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 54 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:26,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:26,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 533 [2023-08-30 11:31:26,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:26,427 INFO L130 PetriNetUnfolder]: 2042/3069 cut-off events. [2023-08-30 11:31:26,427 INFO L131 PetriNetUnfolder]: For 1001/1001 co-relation queries the response was YES. [2023-08-30 11:31:26,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7674 conditions, 3069 events. 2042/3069 cut-off events. For 1001/1001 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14059 event pairs, 1512 based on Foata normal form. 112/3001 useless extension candidates. Maximal degree in co-relation 7654. Up to 3069 conditions per place. [2023-08-30 11:31:26,436 INFO L137 encePairwiseOnDemand]: 530/533 looper letters, 51 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-08-30 11:31:26,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 52 transitions, 319 flow [2023-08-30 11:31:26,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:31:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:31:26,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 716 transitions. [2023-08-30 11:31:26,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44777986241400874 [2023-08-30 11:31:26,439 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 716 transitions. [2023-08-30 11:31:26,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 716 transitions. [2023-08-30 11:31:26,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:26,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 716 transitions. [2023-08-30 11:31:26,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:26,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:26,443 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:26,444 INFO L175 Difference]: Start difference. First operand has 52 places, 54 transitions, 223 flow. Second operand 3 states and 716 transitions. [2023-08-30 11:31:26,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 52 transitions, 319 flow [2023-08-30 11:31:26,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 52 transitions, 307 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 11:31:26,450 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 205 flow [2023-08-30 11:31:26,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=48, PETRI_TRANSITIONS=52} [2023-08-30 11:31:26,451 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2023-08-30 11:31:26,451 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 205 flow [2023-08-30 11:31:26,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:26,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:26,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:31:26,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 11:31:26,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:31:26,657 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:31:26,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:26,657 INFO L85 PathProgramCache]: Analyzing trace with hash 2026664693, now seen corresponding path program 1 times [2023-08-30 11:31:26,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:26,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451925] [2023-08-30 11:31:26,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:26,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:31:26,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:26,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451925] [2023-08-30 11:31:26,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451925] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:26,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:31:26,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:31:26,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339012970] [2023-08-30 11:31:26,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:26,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:31:26,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:26,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:31:26,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:31:26,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 533 [2023-08-30 11:31:26,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 52 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:26,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:26,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 533 [2023-08-30 11:31:26,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:27,241 INFO L130 PetriNetUnfolder]: 2350/3666 cut-off events. [2023-08-30 11:31:27,241 INFO L131 PetriNetUnfolder]: For 972/972 co-relation queries the response was YES. [2023-08-30 11:31:27,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9022 conditions, 3666 events. 2350/3666 cut-off events. For 972/972 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 18057 event pairs, 1804 based on Foata normal form. 48/3534 useless extension candidates. Maximal degree in co-relation 9003. Up to 3059 conditions per place. [2023-08-30 11:31:27,252 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 45 selfloop transitions, 6 changer transitions 26/77 dead transitions. [2023-08-30 11:31:27,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 77 transitions, 437 flow [2023-08-30 11:31:27,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:31:27,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:31:27,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 919 transitions. [2023-08-30 11:31:27,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43105065666041276 [2023-08-30 11:31:27,254 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 919 transitions. [2023-08-30 11:31:27,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 919 transitions. [2023-08-30 11:31:27,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:27,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 919 transitions. [2023-08-30 11:31:27,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:27,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:27,259 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:27,259 INFO L175 Difference]: Start difference. First operand has 48 places, 52 transitions, 205 flow. Second operand 4 states and 919 transitions. [2023-08-30 11:31:27,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 77 transitions, 437 flow [2023-08-30 11:31:27,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 436 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:31:27,260 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 219 flow [2023-08-30 11:31:27,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2023-08-30 11:31:27,261 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-08-30 11:31:27,261 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 219 flow [2023-08-30 11:31:27,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:27,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:27,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:31:27,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 11:31:27,262 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 11:31:27,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:27,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1993323938, now seen corresponding path program 1 times [2023-08-30 11:31:27,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:27,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233703891] [2023-08-30 11:31:27,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:27,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:27,410 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 11:31:27,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:27,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233703891] [2023-08-30 11:31:27,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233703891] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:31:27,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244388767] [2023-08-30 11:31:27,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:27,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:31:27,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:31:27,412 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 11:31:27,427 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 11:31:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:27,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:31:27,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:31:27,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:31:27,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:31:27,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244388767] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:27,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:31:27,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-30 11:31:27,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042052970] [2023-08-30 11:31:27,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:27,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:31:27,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:27,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:31:27,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:31:27,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 533 [2023-08-30 11:31:27,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:27,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:27,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 533 [2023-08-30 11:31:27,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:27,813 INFO L130 PetriNetUnfolder]: 1409/2164 cut-off events. [2023-08-30 11:31:27,813 INFO L131 PetriNetUnfolder]: For 669/669 co-relation queries the response was YES. [2023-08-30 11:31:27,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5406 conditions, 2164 events. 1409/2164 cut-off events. For 669/669 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9476 event pairs, 1016 based on Foata normal form. 96/2260 useless extension candidates. Maximal degree in co-relation 5385. Up to 2164 conditions per place. [2023-08-30 11:31:27,818 INFO L137 encePairwiseOnDemand]: 530/533 looper letters, 0 selfloop transitions, 0 changer transitions 49/49 dead transitions. [2023-08-30 11:31:27,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 309 flow [2023-08-30 11:31:27,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:31:27,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:31:27,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 714 transitions. [2023-08-30 11:31:27,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44652908067542213 [2023-08-30 11:31:27,821 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 714 transitions. [2023-08-30 11:31:27,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 714 transitions. [2023-08-30 11:31:27,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:27,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 714 transitions. [2023-08-30 11:31:27,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:27,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:27,838 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:27,838 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 219 flow. Second operand 3 states and 714 transitions. [2023-08-30 11:31:27,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 309 flow [2023-08-30 11:31:27,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 281 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 11:31:27,840 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-08-30 11:31:27,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2023-08-30 11:31:27,842 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-08-30 11:31:27,842 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-08-30 11:31:27,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:27,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 41 remaining) [2023-08-30 11:31:27,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2023-08-30 11:31:27,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2023-08-30 11:31:27,851 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2023-08-30 11:31:27,851 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2023-08-30 11:31:27,851 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2023-08-30 11:31:27,851 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2023-08-30 11:31:27,851 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2023-08-30 11:31:27,852 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2023-08-30 11:31:27,852 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2023-08-30 11:31:27,852 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2023-08-30 11:31:27,852 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2023-08-30 11:31:27,852 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2023-08-30 11:31:27,852 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2023-08-30 11:31:27,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2023-08-30 11:31:27,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2023-08-30 11:31:27,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2023-08-30 11:31:27,854 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2023-08-30 11:31:27,854 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2023-08-30 11:31:27,854 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2023-08-30 11:31:27,854 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2023-08-30 11:31:27,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2023-08-30 11:31:27,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 41 remaining) [2023-08-30 11:31:27,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 41 remaining) [2023-08-30 11:31:27,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 41 remaining) [2023-08-30 11:31:27,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2023-08-30 11:31:27,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2023-08-30 11:31:27,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2023-08-30 11:31:27,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2023-08-30 11:31:27,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2023-08-30 11:31:27,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2023-08-30 11:31:27,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2023-08-30 11:31:27,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2023-08-30 11:31:27,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2023-08-30 11:31:27,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2023-08-30 11:31:27,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2023-08-30 11:31:27,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2023-08-30 11:31:27,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2023-08-30 11:31:27,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2023-08-30 11:31:27,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2023-08-30 11:31:27,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2023-08-30 11:31:27,864 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 11:31:28,062 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,SelfDestructingSolverStorable12 [2023-08-30 11:31:28,062 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:31:28,067 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 11:31:28,067 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 11:31:28,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:31:28 BasicIcfg [2023-08-30 11:31:28,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 11:31:28,070 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 11:31:28,070 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 11:31:28,071 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 11:31:28,071 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:31:05" (3/4) ... [2023-08-30 11:31:28,073 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 11:31:28,077 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 11:31:28,077 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 11:31:28,078 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 11:31:28,082 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2023-08-30 11:31:28,083 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 11:31:28,083 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 11:31:28,083 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 11:31:28,129 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 11:31:28,130 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 11:31:28,130 INFO L158 Benchmark]: Toolchain (without parser) took 24410.30ms. Allocated memory was 62.9MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 41.2MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 655.5MB. Max. memory is 16.1GB. [2023-08-30 11:31:28,130 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory is still 40.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 11:31:28,131 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.06ms. Allocated memory is still 62.9MB. Free memory was 41.0MB in the beginning and 28.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 11:31:28,131 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.34ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 28.4MB in the beginning and 56.5MB in the end (delta: -28.1MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2023-08-30 11:31:28,131 INFO L158 Benchmark]: Boogie Preprocessor took 59.73ms. Allocated memory is still 77.6MB. Free memory was 56.5MB in the beginning and 54.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 11:31:28,132 INFO L158 Benchmark]: RCFGBuilder took 1086.14ms. Allocated memory is still 77.6MB. Free memory was 54.1MB in the beginning and 48.1MB in the end (delta: 6.0MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2023-08-30 11:31:28,132 INFO L158 Benchmark]: TraceAbstraction took 22847.95ms. Allocated memory was 77.6MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 47.2MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 644.0MB. Max. memory is 16.1GB. [2023-08-30 11:31:28,132 INFO L158 Benchmark]: Witness Printer took 59.95ms. Allocated memory is still 2.3GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 11:31:28,134 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory is still 40.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.06ms. Allocated memory is still 62.9MB. Free memory was 41.0MB in the beginning and 28.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.34ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 28.4MB in the beginning and 56.5MB in the end (delta: -28.1MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.73ms. Allocated memory is still 77.6MB. Free memory was 56.5MB in the beginning and 54.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1086.14ms. Allocated memory is still 77.6MB. Free memory was 54.1MB in the beginning and 48.1MB in the end (delta: 6.0MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. * TraceAbstraction took 22847.95ms. Allocated memory was 77.6MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 47.2MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 644.0MB. Max. memory is 16.1GB. * Witness Printer took 59.95ms. Allocated memory is still 2.3GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.1s, 245 PlacesBefore, 54 PlacesAfterwards, 253 TransitionsBefore, 50 TransitionsAfterwards, 2700 CoEnabledTransitionPairs, 7 FixpointIterations, 170 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 28 TrivialYvCompositions, 11 ConcurrentYvCompositions, 12 ChoiceCompositions, 259 TotalNumberOfCompositions, 8649 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4455, independent: 4214, independent conditional: 0, independent unconditional: 4214, dependent: 241, dependent conditional: 0, dependent unconditional: 241, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1408, independent: 1357, independent conditional: 0, independent unconditional: 1357, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4455, independent: 2857, independent conditional: 0, independent unconditional: 2857, dependent: 190, dependent conditional: 0, dependent unconditional: 190, unknown: 1408, unknown conditional: 0, unknown unconditional: 1408] , Statistics on independence cache: Total cache size (in pairs): 234, Positive cache size: 216, Positive conditional cache size: 0, Positive unconditional cache size: 216, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 304 locations, 41 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: 22.7s, OverallIterations: 13, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1049 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 710 mSDsluCounter, 208 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 72 mSDsCounter, 132 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1391 IncrementalHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 132 mSolverCounterUnsat, 136 mSDtfsCounter, 1391 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=273occurred in iteration=3, InterpolantAutomatonStates: 46, 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, 1.3s InterpolantComputationTime, 171 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 155 ConstructedInterpolants, 0 QuantifiedInterpolants, 529 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1160 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 19 InterpolantComputations, 12 PerfectInterpolantSequences, 23/39 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 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 11:31:28,161 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