./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.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-bad-buffer-mult-alt.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 9ceec73f9e554c485344f34d2b1865bfa0707ac614302bf3f054f6fb35398f61 --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 11:24:58,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:24:58,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:24:58,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:24:58,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:24:58,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:24:58,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:24:58,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:24:58,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:24:58,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:24:58,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:24:58,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:24:58,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:24:58,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:24:58,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:24:58,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:24:58,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:24:58,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:24:58,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:24:58,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:24:58,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:24:58,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:24:58,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:24:58,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:24:58,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:24:58,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:24:58,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:24:58,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:24:58,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:24:58,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:24:58,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:24:58,951 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:24:58,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:24:58,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:24:58,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:24:58,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:24:58,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:24:58,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:24:58,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:24:58,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:24:58,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:24:58,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:24:58,981 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:24:58,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:24:58,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:24:58,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:24:58,982 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:24:58,983 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:24:58,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:24:58,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:24:58,983 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:24:58,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:24:58,984 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:24:58,984 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:24:58,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:24:58,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:24:58,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:24:58,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:24:58,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:24:58,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:24:58,985 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:24:58,985 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:24:58,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:24:58,986 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:24:58,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:24:58,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:24:58,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:24:58,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:24:58,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:24:58,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:24:58,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:24:58,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:24:58,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:24:58,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:24:58,987 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:24:58,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:24:58,988 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:24:58,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:24:58,988 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:24:58,988 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ceec73f9e554c485344f34d2b1865bfa0707ac614302bf3f054f6fb35398f61 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:24:59,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:24:59,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:24:59,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:24:59,258 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:24:59,258 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:24:59,259 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c [2023-08-30 11:25:00,477 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:25:00,717 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:25:00,718 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c [2023-08-30 11:25:00,743 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beda3e342/9c3812adb7e94dbe9d400469f2368da0/FLAGd209f539e [2023-08-30 11:25:00,759 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beda3e342/9c3812adb7e94dbe9d400469f2368da0 [2023-08-30 11:25:00,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:25:00,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:25:00,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:25:00,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:25:00,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:25:00,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:25:00" (1/1) ... [2023-08-30 11:25:00,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c53351a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:25:00, skipping insertion in model container [2023-08-30 11:25:00,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:25:00" (1/1) ... [2023-08-30 11:25:00,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:25:00,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:25:00,917 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-bad-buffer-mult-alt.wvr.c[4293,4306] [2023-08-30 11:25:00,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:25:00,930 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:25:00,951 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-bad-buffer-mult-alt.wvr.c[4293,4306] [2023-08-30 11:25:00,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:25:00,964 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:25:00,965 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:25:00,969 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:25:00,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:25:00 WrapperNode [2023-08-30 11:25:00,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:25:00,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:25:00,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:25:00,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:25:00,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:25:00" (1/1) ... [2023-08-30 11:25:00,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:25:00" (1/1) ... [2023-08-30 11:25:01,011 INFO L138 Inliner]: procedures = 26, calls = 79, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 376 [2023-08-30 11:25:01,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:25:01,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:25:01,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:25:01,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:25:01,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:25:00" (1/1) ... [2023-08-30 11:25:01,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:25:00" (1/1) ... [2023-08-30 11:25:01,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:25:00" (1/1) ... [2023-08-30 11:25:01,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:25:00" (1/1) ... [2023-08-30 11:25:01,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:25:00" (1/1) ... [2023-08-30 11:25:01,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:25:00" (1/1) ... [2023-08-30 11:25:01,041 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:25:00" (1/1) ... [2023-08-30 11:25:01,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:25:00" (1/1) ... [2023-08-30 11:25:01,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:25:01,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:25:01,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:25:01,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:25:01,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:25:00" (1/1) ... [2023-08-30 11:25:01,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:25:01,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:25:01,085 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 11:25:01,095 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 11:25:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:25:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:25:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:25:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:25:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:25:01,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:25:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:25:01,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:25:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:25:01,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:25:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 11:25:01,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 11:25:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:25:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:25:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:25:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:25:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:25:01,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:25:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:25:01,125 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 11:25:01,291 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:25:01,293 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:25:01,750 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:25:02,078 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:25:02,078 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 11:25:02,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:25:02 BoogieIcfgContainer [2023-08-30 11:25:02,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:25:02,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:25:02,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:25:02,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:25:02,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:25:00" (1/3) ... [2023-08-30 11:25:02,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2d03a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:25:02, skipping insertion in model container [2023-08-30 11:25:02,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:25:00" (2/3) ... [2023-08-30 11:25:02,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2d03a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:25:02, skipping insertion in model container [2023-08-30 11:25:02,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:25:02" (3/3) ... [2023-08-30 11:25:02,086 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2023-08-30 11:25:02,091 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:25:02,097 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:25:02,097 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-08-30 11:25:02,097 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:25:02,233 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 11:25:02,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 271 transitions, 574 flow [2023-08-30 11:25:02,389 INFO L130 PetriNetUnfolder]: 19/267 cut-off events. [2023-08-30 11:25:02,389 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 11:25:02,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 267 events. 19/267 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 287 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 224. Up to 2 conditions per place. [2023-08-30 11:25:02,393 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 271 transitions, 574 flow [2023-08-30 11:25:02,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 247 transitions, 515 flow [2023-08-30 11:25:02,410 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:25:02,423 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 247 transitions, 515 flow [2023-08-30 11:25:02,425 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 247 transitions, 515 flow [2023-08-30 11:25:02,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 247 transitions, 515 flow [2023-08-30 11:25:02,484 INFO L130 PetriNetUnfolder]: 18/247 cut-off events. [2023-08-30 11:25:02,485 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:25:02,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 247 events. 18/247 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 289 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 224. Up to 2 conditions per place. [2023-08-30 11:25:02,489 INFO L119 LiptonReduction]: Number of co-enabled transitions 4644 [2023-08-30 11:25:16,665 INFO L134 LiptonReduction]: Checked pairs total: 9440 [2023-08-30 11:25:16,666 INFO L136 LiptonReduction]: Total number of compositions: 251 [2023-08-30 11:25:16,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:25:16,679 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;@4a17293, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:25:16,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-08-30 11:25:16,681 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:25:16,681 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:25:16,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:25:16,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:25:16,682 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:25:16,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:25:16,700 INFO L85 PathProgramCache]: Analyzing trace with hash 44345, now seen corresponding path program 1 times [2023-08-30 11:25:16,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:25:16,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567458919] [2023-08-30 11:25:16,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:25:16,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:25:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:25:16,989 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 11:25:16,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:25:16,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567458919] [2023-08-30 11:25:16,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567458919] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:25:16,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:25:16,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:25:16,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584493582] [2023-08-30 11:25:16,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:25:16,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:25:17,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:25:17,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:25:17,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:25:17,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 522 [2023-08-30 11:25:17,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 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 11:25:17,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:25:17,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 522 [2023-08-30 11:25:17,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:25:25,982 INFO L130 PetriNetUnfolder]: 90903/113049 cut-off events. [2023-08-30 11:25:25,982 INFO L131 PetriNetUnfolder]: For 1376/1376 co-relation queries the response was YES. [2023-08-30 11:25:26,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227446 conditions, 113049 events. 90903/113049 cut-off events. For 1376/1376 co-relation queries the response was YES. Maximal size of possible extension queue 9860. Compared 667550 event pairs, 60600 based on Foata normal form. 0/34898 useless extension candidates. Maximal degree in co-relation 102115. Up to 55401 conditions per place. [2023-08-30 11:25:26,639 INFO L137 encePairwiseOnDemand]: 506/522 looper letters, 93 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2023-08-30 11:25:26,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 103 transitions, 442 flow [2023-08-30 11:25:26,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:25:26,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:25:26,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 750 transitions. [2023-08-30 11:25:26,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789272030651341 [2023-08-30 11:25:26,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 750 transitions. [2023-08-30 11:25:26,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 750 transitions. [2023-08-30 11:25:26,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:25:26,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 750 transitions. [2023-08-30 11:25:26,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 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 11:25:26,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 11:25:26,674 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 11:25:26,675 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 151 flow. Second operand 3 states and 750 transitions. [2023-08-30 11:25:26,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 103 transitions, 442 flow [2023-08-30 11:25:26,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 416 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 11:25:26,881 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 158 flow [2023-08-30 11:25:26,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2023-08-30 11:25:26,884 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2023-08-30 11:25:26,884 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 158 flow [2023-08-30 11:25:26,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 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 11:25:26,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:25:26,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:25:26,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:25:26,886 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:25:26,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:25:26,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1376942, now seen corresponding path program 1 times [2023-08-30 11:25:26,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:25:26,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017841238] [2023-08-30 11:25:26,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:25:26,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:25:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:25:26,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:25:26,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:25:26,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017841238] [2023-08-30 11:25:26,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017841238] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:25:26,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:25:26,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:25:26,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145956440] [2023-08-30 11:25:26,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:25:26,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:25:26,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:25:26,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:25:26,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:25:26,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 522 [2023-08-30 11:25:26,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 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 11:25:26,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:25:26,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 522 [2023-08-30 11:25:26,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:25:35,004 INFO L130 PetriNetUnfolder]: 90903/113047 cut-off events. [2023-08-30 11:25:35,004 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:25:35,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226015 conditions, 113047 events. 90903/113047 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9860. Compared 667089 event pairs, 60600 based on Foata normal form. 0/34895 useless extension candidates. Maximal degree in co-relation 112996. Up to 110793 conditions per place. [2023-08-30 11:25:35,582 INFO L137 encePairwiseOnDemand]: 519/522 looper letters, 51 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-08-30 11:25:35,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 254 flow [2023-08-30 11:25:35,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:25:35,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:25:35,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 684 transitions. [2023-08-30 11:25:35,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4367816091954023 [2023-08-30 11:25:35,585 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 684 transitions. [2023-08-30 11:25:35,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 684 transitions. [2023-08-30 11:25:35,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:25:35,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 684 transitions. [2023-08-30 11:25:35,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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 11:25:35,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 11:25:35,589 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 11:25:35,590 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 158 flow. Second operand 3 states and 684 transitions. [2023-08-30 11:25:35,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 58 transitions, 254 flow [2023-08-30 11:25:35,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:25:35,592 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 144 flow [2023-08-30 11:25:35,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2023-08-30 11:25:35,594 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -13 predicate places. [2023-08-30 11:25:35,594 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 144 flow [2023-08-30 11:25:35,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 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 11:25:35,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:25:35,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:25:35,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 11:25:35,595 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:25:35,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:25:35,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1376954, now seen corresponding path program 1 times [2023-08-30 11:25:35,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:25:35,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656278746] [2023-08-30 11:25:35,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:25:35,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:25:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:25:35,690 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 11:25:35,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:25:35,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656278746] [2023-08-30 11:25:35,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656278746] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:25:35,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656885756] [2023-08-30 11:25:35,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:25:35,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:25:35,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:25:35,713 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 11:25:35,732 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 11:25:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:25:35,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:25:35,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:25:35,918 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 11:25:35,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:25:35,930 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 11:25:35,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656885756] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:25:35,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:25:35,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:25:35,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007837560] [2023-08-30 11:25:35,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:25:35,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:25:35,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:25:35,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:25:35,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:25:35,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 522 [2023-08-30 11:25:35,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 144 flow. Second operand has 7 states, 7 states have (on average 212.14285714285714) internal successors, (1485), 7 states have internal predecessors, (1485), 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 11:25:35,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:25:35,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 522 [2023-08-30 11:25:35,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:25:55,278 INFO L130 PetriNetUnfolder]: 227256/282613 cut-off events. [2023-08-30 11:25:55,278 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:25:55,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565009 conditions, 282613 events. 227256/282613 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19990. Compared 1796789 event pairs, 151500 based on Foata normal form. 0/87259 useless extension candidates. Maximal degree in co-relation 565001. Up to 55399 conditions per place. [2023-08-30 11:25:56,507 INFO L137 encePairwiseOnDemand]: 516/522 looper letters, 220 selfloop transitions, 13 changer transitions 0/239 dead transitions. [2023-08-30 11:25:56,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 239 transitions, 1022 flow [2023-08-30 11:25:56,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:25:56,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:25:56,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1505 transitions. [2023-08-30 11:25:56,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48052362707535123 [2023-08-30 11:25:56,511 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1505 transitions. [2023-08-30 11:25:56,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1505 transitions. [2023-08-30 11:25:56,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:25:56,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1505 transitions. [2023-08-30 11:25:56,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.83333333333334) internal successors, (1505), 6 states have internal predecessors, (1505), 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 11:25:56,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 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 11:25:56,519 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 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 11:25:56,519 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 144 flow. Second operand 6 states and 1505 transitions. [2023-08-30 11:25:56,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 239 transitions, 1022 flow [2023-08-30 11:25:56,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 239 transitions, 1021 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:25:56,524 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 236 flow [2023-08-30 11:25:56,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2023-08-30 11:25:56,525 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2023-08-30 11:25:56,525 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 236 flow [2023-08-30 11:25:56,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 212.14285714285714) internal successors, (1485), 7 states have internal predecessors, (1485), 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 11:25:56,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:25:56,526 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:25:56,532 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 11:25:56,730 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 11:25:56,730 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:25:56,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:25:56,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1926962555, now seen corresponding path program 2 times [2023-08-30 11:25:56,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:25:56,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501922094] [2023-08-30 11:25:56,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:25:56,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:25:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:25:56,860 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 11:25:56,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:25:56,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501922094] [2023-08-30 11:25:56,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501922094] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:25:56,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86280432] [2023-08-30 11:25:56,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:25:56,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:25:56,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:25:56,866 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 11:25:56,908 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 11:25:57,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:25:57,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:25:57,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:25:57,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:25:57,026 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 11:25:57,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:25:57,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86280432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:25:57,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:25:57,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:25:57,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533482414] [2023-08-30 11:25:57,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:25:57,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:25:57,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:25:57,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:25:57,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:25:57,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 522 [2023-08-30 11:25:57,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 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 11:25:57,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:25:57,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 522 [2023-08-30 11:25:57,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:26:16,676 INFO L130 PetriNetUnfolder]: 227256/282612 cut-off events. [2023-08-30 11:26:16,677 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:26:17,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565036 conditions, 282612 events. 227256/282612 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19738. Compared 1798450 event pairs, 151500 based on Foata normal form. 1/87236 useless extension candidates. Maximal degree in co-relation 565024. Up to 276972 conditions per place. [2023-08-30 11:26:18,261 INFO L137 encePairwiseOnDemand]: 519/522 looper letters, 54 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2023-08-30 11:26:18,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 66 transitions, 346 flow [2023-08-30 11:26:18,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:26:18,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:26:18,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 688 transitions. [2023-08-30 11:26:18,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393358876117497 [2023-08-30 11:26:18,264 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 688 transitions. [2023-08-30 11:26:18,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 688 transitions. [2023-08-30 11:26:18,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:26:18,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 688 transitions. [2023-08-30 11:26:18,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 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 11:26:18,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 11:26:18,268 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 11:26:18,268 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 236 flow. Second operand 3 states and 688 transitions. [2023-08-30 11:26:18,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 66 transitions, 346 flow [2023-08-30 11:26:18,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 327 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 11:26:18,271 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 219 flow [2023-08-30 11:26:18,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-08-30 11:26:18,271 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2023-08-30 11:26:18,271 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 219 flow [2023-08-30 11:26:18,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 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 11:26:18,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:26:18,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:26:18,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 11:26:18,476 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 11:26:18,476 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:26:18,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:26:18,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1920836304, now seen corresponding path program 1 times [2023-08-30 11:26:18,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:26:18,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67917492] [2023-08-30 11:26:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:26:18,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:26:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:26:18,537 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 11:26:18,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:26:18,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67917492] [2023-08-30 11:26:18,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67917492] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:26:18,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:26:18,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:26:18,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235049890] [2023-08-30 11:26:18,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:26:18,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:26:18,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:26:18,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:26:18,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:26:18,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 522 [2023-08-30 11:26:18,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 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 11:26:18,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:26:18,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 522 [2023-08-30 11:26:18,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:26:45,022 INFO L130 PetriNetUnfolder]: 296791/377172 cut-off events. [2023-08-30 11:26:45,023 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 11:26:45,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758872 conditions, 377172 events. 296791/377172 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25830. Compared 2684212 event pairs, 90805 based on Foata normal form. 0/123717 useless extension candidates. Maximal degree in co-relation 758859. Up to 225566 conditions per place. [2023-08-30 11:26:46,878 INFO L137 encePairwiseOnDemand]: 518/522 looper letters, 97 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2023-08-30 11:26:46,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 105 transitions, 502 flow [2023-08-30 11:26:46,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:26:46,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:26:46,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 737 transitions. [2023-08-30 11:26:46,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4706257982120051 [2023-08-30 11:26:46,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 737 transitions. [2023-08-30 11:26:46,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 737 transitions. [2023-08-30 11:26:46,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:26:46,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 737 transitions. [2023-08-30 11:26:46,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 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 11:26:46,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 11:26:46,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 11:26:46,885 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 219 flow. Second operand 3 states and 737 transitions. [2023-08-30 11:26:46,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 105 transitions, 502 flow [2023-08-30 11:26:46,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 105 transitions, 490 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:26:46,887 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 221 flow [2023-08-30 11:26:46,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-08-30 11:26:46,887 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -5 predicate places. [2023-08-30 11:26:46,888 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 221 flow [2023-08-30 11:26:46,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 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 11:26:46,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:26:46,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:26:46,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:26:46,888 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:26:46,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:26:46,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1920836456, now seen corresponding path program 1 times [2023-08-30 11:26:46,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:26:46,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432310689] [2023-08-30 11:26:46,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:26:46,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:26:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:26:46,974 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 11:26:46,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:26:46,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432310689] [2023-08-30 11:26:46,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432310689] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:26:46,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:26:46,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:26:46,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507559616] [2023-08-30 11:26:46,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:26:46,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:26:46,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:26:46,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:26:46,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:26:47,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 522 [2023-08-30 11:26:47,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 208.25) internal successors, (833), 4 states have internal predecessors, (833), 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 11:26:47,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:26:47,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 522 [2023-08-30 11:26:47,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:27:15,597 INFO L130 PetriNetUnfolder]: 314091/402268 cut-off events. [2023-08-30 11:27:15,597 INFO L131 PetriNetUnfolder]: For 19636/19636 co-relation queries the response was YES. [2023-08-30 11:27:16,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837174 conditions, 402268 events. 314091/402268 cut-off events. For 19636/19636 co-relation queries the response was YES. Maximal size of possible extension queue 28006. Compared 2901999 event pairs, 239665 based on Foata normal form. 0/145562 useless extension candidates. Maximal degree in co-relation 837160. Up to 373946 conditions per place. [2023-08-30 11:27:17,928 INFO L137 encePairwiseOnDemand]: 511/522 looper letters, 96 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2023-08-30 11:27:17,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 105 transitions, 530 flow [2023-08-30 11:27:17,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:27:17,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:27:17,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 920 transitions. [2023-08-30 11:27:17,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44061302681992337 [2023-08-30 11:27:17,949 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 920 transitions. [2023-08-30 11:27:17,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 920 transitions. [2023-08-30 11:27:17,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:27:17,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 920 transitions. [2023-08-30 11:27:17,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 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 11:27:17,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 522.0) internal successors, (2610), 5 states have internal predecessors, (2610), 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 11:27:17,954 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 522.0) internal successors, (2610), 5 states have internal predecessors, (2610), 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 11:27:17,954 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 221 flow. Second operand 4 states and 920 transitions. [2023-08-30 11:27:17,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 105 transitions, 530 flow [2023-08-30 11:27:17,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 105 transitions, 528 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:27:17,978 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 242 flow [2023-08-30 11:27:17,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2023-08-30 11:27:17,979 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2023-08-30 11:27:17,979 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 242 flow [2023-08-30 11:27:17,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 208.25) internal successors, (833), 4 states have internal predecessors, (833), 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 11:27:17,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:27:17,979 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 11:27:17,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:27:17,979 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:27:17,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:27:17,980 INFO L85 PathProgramCache]: Analyzing trace with hash 575022788, now seen corresponding path program 1 times [2023-08-30 11:27:17,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:27:17,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132715935] [2023-08-30 11:27:17,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:17,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:27:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:18,106 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 11:27:18,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:27:18,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132715935] [2023-08-30 11:27:18,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132715935] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:27:18,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493871548] [2023-08-30 11:27:18,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:27:18,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:27:18,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:27:18,121 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 11:27:18,145 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 11:27:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:27:18,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 11:27:18,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:27:18,318 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 11:27:18,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:27:18,385 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 11:27:18,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493871548] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:27:18,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:27:18,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 11:27:18,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356257215] [2023-08-30 11:27:18,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:27:18,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:27:18,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:27:18,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:27:18,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:27:18,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 522 [2023-08-30 11:27:18,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 67 transitions, 242 flow. Second operand has 13 states, 13 states have (on average 212.15384615384616) internal successors, (2758), 13 states have internal predecessors, (2758), 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 11:27:18,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:27:18,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 522 [2023-08-30 11:27:18,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand