./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/loop-tiling-eq.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/loop-tiling-eq.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 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 --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 11:08:11,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:08:11,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:08:11,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:08:11,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:08:11,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:08:11,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:08:11,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:08:11,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:08:11,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:08:11,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:08:11,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:08:11,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:08:11,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:08:11,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:08:11,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:08:11,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:08:11,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:08:11,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:08:11,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:08:11,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:08:11,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:08:11,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:08:11,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:08:11,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:08:11,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:08:11,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:08:11,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:08:11,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:08:11,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:08:11,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:08:11,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:08:11,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:08:11,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:08:11,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:08:11,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:08:11,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:08:11,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:08:11,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:08:11,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:08:11,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:08:11,930 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:08:11,947 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:08:11,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:08:11,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:08:11,948 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:08:11,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:08:11,948 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:08:11,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:08:11,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:08:11,949 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:08:11,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:08:11,949 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:08:11,949 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:08:11,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:08:11,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:08:11,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:08:11,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:08:11,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:08:11,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:08:11,951 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:08:11,951 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:08:11,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:08:11,951 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:08:11,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:08:11,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:08:11,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:08:11,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:08:11,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:08:11,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:08:11,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:08:11,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:08:11,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:08:11,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:08:11,953 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:08:11,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:08:11,953 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:08:11,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:08:11,953 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:08:11,953 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:08:12,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:08:12,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:08:12,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:08:12,193 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:08:12,193 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:08:12,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2023-08-30 11:08:13,147 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:08:13,293 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:08:13,294 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2023-08-30 11:08:13,298 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e189988/a83a4e89c7ed4edf85e193cb235b4d96/FLAG01ae363a1 [2023-08-30 11:08:13,308 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e189988/a83a4e89c7ed4edf85e193cb235b4d96 [2023-08-30 11:08:13,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:08:13,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:08:13,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:08:13,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:08:13,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:08:13,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:08:13" (1/1) ... [2023-08-30 11:08:13,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2ae343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:08:13, skipping insertion in model container [2023-08-30 11:08:13,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:08:13" (1/1) ... [2023-08-30 11:08:13,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:08:13,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:08:13,486 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/loop-tiling-eq.wvr.c[2618,2631] [2023-08-30 11:08:13,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:08:13,503 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:08:13,535 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/loop-tiling-eq.wvr.c[2618,2631] [2023-08-30 11:08:13,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:08:13,550 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:08:13,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:08:13 WrapperNode [2023-08-30 11:08:13,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:08:13,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:08:13,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:08:13,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:08:13,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:08:13" (1/1) ... [2023-08-30 11:08:13,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:08:13" (1/1) ... [2023-08-30 11:08:13,599 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 213 [2023-08-30 11:08:13,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:08:13,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:08:13,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:08:13,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:08:13,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:08:13" (1/1) ... [2023-08-30 11:08:13,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:08:13" (1/1) ... [2023-08-30 11:08:13,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:08:13" (1/1) ... [2023-08-30 11:08:13,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:08:13" (1/1) ... [2023-08-30 11:08:13,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:08:13" (1/1) ... [2023-08-30 11:08:13,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:08:13" (1/1) ... [2023-08-30 11:08:13,659 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:08:13" (1/1) ... [2023-08-30 11:08:13,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:08:13" (1/1) ... [2023-08-30 11:08:13,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:08:13,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:08:13,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:08:13,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:08:13,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:08:13" (1/1) ... [2023-08-30 11:08:13,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:08:13,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:08:13,686 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 11:08:13,688 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 11:08:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:08:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 11:08:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:08:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:08:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:08:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 11:08:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:08:13,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:08:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:08:13,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:08:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:08:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:08:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:08:13,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:08:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:08:13,712 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 11:08:13,823 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:08:13,824 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:08:14,218 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:08:14,225 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:08:14,228 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-30 11:08:14,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:08:14 BoogieIcfgContainer [2023-08-30 11:08:14,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:08:14,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:08:14,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:08:14,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:08:14,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:08:13" (1/3) ... [2023-08-30 11:08:14,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac83ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:08:14, skipping insertion in model container [2023-08-30 11:08:14,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:08:13" (2/3) ... [2023-08-30 11:08:14,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac83ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:08:14, skipping insertion in model container [2023-08-30 11:08:14,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:08:14" (3/3) ... [2023-08-30 11:08:14,238 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-08-30 11:08:14,243 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:08:14,248 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:08:14,248 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-08-30 11:08:14,248 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:08:14,318 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 11:08:14,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 313 transitions, 642 flow [2023-08-30 11:08:14,399 INFO L130 PetriNetUnfolder]: 27/311 cut-off events. [2023-08-30 11:08:14,399 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:08:14,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 311 events. 27/311 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 467 event pairs, 0 based on Foata normal form. 0/258 useless extension candidates. Maximal degree in co-relation 224. Up to 2 conditions per place. [2023-08-30 11:08:14,419 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 313 transitions, 642 flow [2023-08-30 11:08:14,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 290 transitions, 592 flow [2023-08-30 11:08:14,425 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:08:14,430 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 271 places, 290 transitions, 592 flow [2023-08-30 11:08:14,431 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 271 places, 290 transitions, 592 flow [2023-08-30 11:08:14,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 290 transitions, 592 flow [2023-08-30 11:08:14,469 INFO L130 PetriNetUnfolder]: 26/290 cut-off events. [2023-08-30 11:08:14,469 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:08:14,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 290 events. 26/290 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 464 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 224. Up to 2 conditions per place. [2023-08-30 11:08:14,471 INFO L119 LiptonReduction]: Number of co-enabled transitions 1916 [2023-08-30 11:08:30,474 WARN L222 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 154 DAG size of output: 145 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 11:08:36,551 INFO L134 LiptonReduction]: Checked pairs total: 3958 [2023-08-30 11:08:36,551 INFO L136 LiptonReduction]: Total number of compositions: 349 [2023-08-30 11:08:36,561 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:08:36,563 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;@33a7256a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:08:36,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-08-30 11:08:36,565 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 11:08:36,565 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:08:36,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:08:36,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 11:08:36,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:08:36,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:08:36,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1179, now seen corresponding path program 1 times [2023-08-30 11:08:36,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:08:36,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503819018] [2023-08-30 11:08:36,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:36,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:08:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:08:36,635 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 11:08:36,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:08:36,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503819018] [2023-08-30 11:08:36,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503819018] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:08:36,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:08:36,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 11:08:36,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73225284] [2023-08-30 11:08:36,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:08:36,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 11:08:36,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:08:36,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 11:08:36,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 11:08:36,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 662 [2023-08-30 11:08:36,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 118 flow. Second operand has 2 states, 2 states have (on average 289.5) internal successors, (579), 2 states have internal predecessors, (579), 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 11:08:36,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:08:36,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 662 [2023-08-30 11:08:36,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:08:36,780 INFO L130 PetriNetUnfolder]: 342/566 cut-off events. [2023-08-30 11:08:36,781 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-08-30 11:08:36,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 566 events. 342/566 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2438 event pairs, 240 based on Foata normal form. 0/285 useless extension candidates. Maximal degree in co-relation 978. Up to 563 conditions per place. [2023-08-30 11:08:36,785 INFO L137 encePairwiseOnDemand]: 656/662 looper letters, 45 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2023-08-30 11:08:36,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 47 transitions, 196 flow [2023-08-30 11:08:36,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 11:08:36,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 11:08:36,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 629 transitions. [2023-08-30 11:08:36,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47507552870090636 [2023-08-30 11:08:36,802 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 629 transitions. [2023-08-30 11:08:36,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 629 transitions. [2023-08-30 11:08:36,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:08:36,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 629 transitions. [2023-08-30 11:08:36,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 314.5) internal successors, (629), 2 states have internal predecessors, (629), 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 11:08:36,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 662.0) internal successors, (1986), 3 states have internal predecessors, (1986), 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 11:08:36,813 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 662.0) internal successors, (1986), 3 states have internal predecessors, (1986), 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 11:08:36,814 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 118 flow. Second operand 2 states and 629 transitions. [2023-08-30 11:08:36,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 47 transitions, 196 flow [2023-08-30 11:08:36,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 47 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 11:08:36,817 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 98 flow [2023-08-30 11:08:36,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2023-08-30 11:08:36,820 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2023-08-30 11:08:36,820 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 98 flow [2023-08-30 11:08:36,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 289.5) internal successors, (579), 2 states have internal predecessors, (579), 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 11:08:36,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:08:36,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:08:36,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:08:36,822 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:08:36,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:08:36,822 INFO L85 PathProgramCache]: Analyzing trace with hash 37554, now seen corresponding path program 1 times [2023-08-30 11:08:36,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:08:36,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083360181] [2023-08-30 11:08:36,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:36,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:08:36,831 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 11:08:36,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889569920] [2023-08-30 11:08:36,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:36,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:36,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:08:36,834 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 11:08:36,848 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 11:08:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:08:36,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 11:08:36,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:08:36,917 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 11:08:36,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:08:36,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:08:36,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083360181] [2023-08-30 11:08:36,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 11:08:36,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889569920] [2023-08-30 11:08:36,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889569920] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:08:36,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:08:36,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:08:36,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300345627] [2023-08-30 11:08:36,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:08:36,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:08:36,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:08:36,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:08:36,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:08:36,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-08-30 11:08:36,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 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 11:08:36,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:08:36,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-08-30 11:08:36,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:08:37,069 INFO L130 PetriNetUnfolder]: 342/563 cut-off events. [2023-08-30 11:08:37,069 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 11:08:37,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 563 events. 342/563 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2454 event pairs, 240 based on Foata normal form. 0/285 useless extension candidates. Maximal degree in co-relation 1129. Up to 559 conditions per place. [2023-08-30 11:08:37,071 INFO L137 encePairwiseOnDemand]: 658/662 looper letters, 41 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-08-30 11:08:37,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 176 flow [2023-08-30 11:08:37,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:08:37,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:08:37,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 885 transitions. [2023-08-30 11:08:37,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44561933534743203 [2023-08-30 11:08:37,074 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 885 transitions. [2023-08-30 11:08:37,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 885 transitions. [2023-08-30 11:08:37,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:08:37,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 885 transitions. [2023-08-30 11:08:37,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 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 11:08:37,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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 11:08:37,079 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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 11:08:37,079 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 98 flow. Second operand 3 states and 885 transitions. [2023-08-30 11:08:37,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 176 flow [2023-08-30 11:08:37,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 176 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 11:08:37,081 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 94 flow [2023-08-30 11:08:37,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, 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=94, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2023-08-30 11:08:37,081 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-08-30 11:08:37,081 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 94 flow [2023-08-30 11:08:37,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 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 11:08:37,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:08:37,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:08:37,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 11:08:37,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:37,289 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:08:37,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:08:37,291 INFO L85 PathProgramCache]: Analyzing trace with hash 37555, now seen corresponding path program 1 times [2023-08-30 11:08:37,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:08:37,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776549897] [2023-08-30 11:08:37,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:37,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:08:37,302 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 11:08:37,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788845083] [2023-08-30 11:08:37,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:37,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:37,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:08:37,303 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 11:08:37,305 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 11:08:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:08:37,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 11:08:37,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:08:37,357 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 11:08:37,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:08:37,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:08:37,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776549897] [2023-08-30 11:08:37,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 11:08:37,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788845083] [2023-08-30 11:08:37,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788845083] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:08:37,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:08:37,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:08:37,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742764235] [2023-08-30 11:08:37,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:08:37,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:08:37,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:08:37,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:08:37,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:08:37,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-08-30 11:08:37,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 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 11:08:37,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:08:37,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-08-30 11:08:37,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:08:37,560 INFO L130 PetriNetUnfolder]: 683/1122 cut-off events. [2023-08-30 11:08:37,560 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-08-30 11:08:37,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2255 conditions, 1122 events. 683/1122 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 5747 event pairs, 480 based on Foata normal form. 0/570 useless extension candidates. Maximal degree in co-relation 2251. Up to 560 conditions per place. [2023-08-30 11:08:37,566 INFO L137 encePairwiseOnDemand]: 653/662 looper letters, 74 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2023-08-30 11:08:37,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 82 transitions, 334 flow [2023-08-30 11:08:37,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:08:37,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:08:37,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 923 transitions. [2023-08-30 11:08:37,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4647532729103726 [2023-08-30 11:08:37,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 923 transitions. [2023-08-30 11:08:37,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 923 transitions. [2023-08-30 11:08:37,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:08:37,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 923 transitions. [2023-08-30 11:08:37,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 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 11:08:37,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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 11:08:37,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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 11:08:37,574 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 94 flow. Second operand 3 states and 923 transitions. [2023-08-30 11:08:37,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 82 transitions, 334 flow [2023-08-30 11:08:37,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 82 transitions, 333 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:08:37,576 INFO L231 Difference]: Finished difference. Result has 46 places, 49 transitions, 143 flow [2023-08-30 11:08:37,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=46, PETRI_TRANSITIONS=49} [2023-08-30 11:08:37,577 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -7 predicate places. [2023-08-30 11:08:37,577 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 49 transitions, 143 flow [2023-08-30 11:08:37,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 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 11:08:37,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:08:37,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:08:37,586 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 11:08:37,784 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,SelfDestructingSolverStorable2 [2023-08-30 11:08:37,785 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:08:37,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:08:37,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1165738, now seen corresponding path program 1 times [2023-08-30 11:08:37,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:08:37,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051332901] [2023-08-30 11:08:37,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:37,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:08:37,800 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 11:08:37,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281903988] [2023-08-30 11:08:37,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:37,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:37,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:08:37,813 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 11:08:37,816 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 11:08:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:08:37,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:08:37,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:08:37,893 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 11:08:37,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:08:37,905 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 11:08:37,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:08:37,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051332901] [2023-08-30 11:08:37,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 11:08:37,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281903988] [2023-08-30 11:08:37,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281903988] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:08:37,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 11:08:37,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-30 11:08:37,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222252010] [2023-08-30 11:08:37,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 11:08:37,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 11:08:37,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:08:37,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 11:08:37,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:08:37,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-08-30 11:08:37,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 49 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 11:08:37,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:08:37,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-08-30 11:08:37,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:08:38,379 INFO L130 PetriNetUnfolder]: 1706/2799 cut-off events. [2023-08-30 11:08:38,380 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2023-08-30 11:08:38,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5660 conditions, 2799 events. 1706/2799 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 16834 event pairs, 1200 based on Foata normal form. 0/1445 useless extension candidates. Maximal degree in co-relation 5655. Up to 561 conditions per place. [2023-08-30 11:08:38,390 INFO L137 encePairwiseOnDemand]: 653/662 looper letters, 173 selfloop transitions, 21 changer transitions 0/196 dead transitions. [2023-08-30 11:08:38,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 196 transitions, 883 flow [2023-08-30 11:08:38,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:08:38,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:08:38,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1883 transitions. [2023-08-30 11:08:38,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4740684793554884 [2023-08-30 11:08:38,401 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1883 transitions. [2023-08-30 11:08:38,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1883 transitions. [2023-08-30 11:08:38,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:08:38,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1883 transitions. [2023-08-30 11:08:38,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 313.8333333333333) internal successors, (1883), 6 states have internal predecessors, (1883), 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 11:08:38,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 662.0) internal successors, (4634), 7 states have internal predecessors, (4634), 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 11:08:38,411 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 662.0) internal successors, (4634), 7 states have internal predecessors, (4634), 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 11:08:38,411 INFO L175 Difference]: Start difference. First operand has 46 places, 49 transitions, 143 flow. Second operand 6 states and 1883 transitions. [2023-08-30 11:08:38,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 196 transitions, 883 flow [2023-08-30 11:08:38,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 196 transitions, 859 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:08:38,416 INFO L231 Difference]: Finished difference. Result has 52 places, 64 transitions, 281 flow [2023-08-30 11:08:38,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=281, PETRI_PLACES=52, PETRI_TRANSITIONS=64} [2023-08-30 11:08:38,417 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2023-08-30 11:08:38,418 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 64 transitions, 281 flow [2023-08-30 11:08:38,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 11:08:38,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:08:38,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 11:08:38,425 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 11:08:38,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:38,623 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:08:38,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:08:38,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1121067790, now seen corresponding path program 1 times [2023-08-30 11:08:38,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:08:38,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179209657] [2023-08-30 11:08:38,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:38,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:08:38,632 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 11:08:38,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495020280] [2023-08-30 11:08:38,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:38,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:38,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:08:38,633 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 11:08:38,635 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 11:08:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:08:38,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 11:08:38,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:08:38,708 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 11:08:38,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:08:38,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:08:38,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179209657] [2023-08-30 11:08:38,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 11:08:38,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495020280] [2023-08-30 11:08:38,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495020280] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:08:38,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:08:38,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:08:38,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190615681] [2023-08-30 11:08:38,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:08:38,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:08:38,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:08:38,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:08:38,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:08:38,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 662 [2023-08-30 11:08:38,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 64 transitions, 281 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 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 11:08:38,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:08:38,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 662 [2023-08-30 11:08:38,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:08:39,007 INFO L130 PetriNetUnfolder]: 1706/2794 cut-off events. [2023-08-30 11:08:39,007 INFO L131 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2023-08-30 11:08:39,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5689 conditions, 2794 events. 1706/2794 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 16801 event pairs, 1200 based on Foata normal form. 0/1442 useless extension candidates. Maximal degree in co-relation 5681. Up to 2756 conditions per place. [2023-08-30 11:08:39,015 INFO L137 encePairwiseOnDemand]: 660/662 looper letters, 60 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2023-08-30 11:08:39,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 401 flow [2023-08-30 11:08:39,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:08:39,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:08:39,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 900 transitions. [2023-08-30 11:08:39,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45317220543806647 [2023-08-30 11:08:39,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 900 transitions. [2023-08-30 11:08:39,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 900 transitions. [2023-08-30 11:08:39,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:08:39,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 900 transitions. [2023-08-30 11:08:39,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 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 11:08:39,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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 11:08:39,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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 11:08:39,023 INFO L175 Difference]: Start difference. First operand has 52 places, 64 transitions, 281 flow. Second operand 3 states and 900 transitions. [2023-08-30 11:08:39,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 401 flow [2023-08-30 11:08:39,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 371 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 11:08:39,025 INFO L231 Difference]: Finished difference. Result has 52 places, 63 transitions, 251 flow [2023-08-30 11:08:39,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=251, PETRI_PLACES=52, PETRI_TRANSITIONS=63} [2023-08-30 11:08:39,025 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2023-08-30 11:08:39,026 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 63 transitions, 251 flow [2023-08-30 11:08:39,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 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 11:08:39,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:08:39,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 11:08:39,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 11:08:39,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:39,230 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:08:39,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:08:39,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1121067815, now seen corresponding path program 1 times [2023-08-30 11:08:39,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:08:39,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027896822] [2023-08-30 11:08:39,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:39,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:08:39,238 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 11:08:39,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295039622] [2023-08-30 11:08:39,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:39,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:39,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:08:39,239 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 11:08:39,241 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 11:08:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:08:39,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 11:08:39,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:08:39,306 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 11:08:39,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:08:39,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:08:39,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027896822] [2023-08-30 11:08:39,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 11:08:39,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295039622] [2023-08-30 11:08:39,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295039622] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:08:39,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:08:39,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:08:39,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573864930] [2023-08-30 11:08:39,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:08:39,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:08:39,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:08:39,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:08:39,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:08:39,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 662 [2023-08-30 11:08:39,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 63 transitions, 251 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 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 11:08:39,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:08:39,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 662 [2023-08-30 11:08:39,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:08:39,740 INFO L130 PetriNetUnfolder]: 3401/5560 cut-off events. [2023-08-30 11:08:39,740 INFO L131 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2023-08-30 11:08:39,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11246 conditions, 5560 events. 3401/5560 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 36943 event pairs, 2400 based on Foata normal form. 0/2869 useless extension candidates. Maximal degree in co-relation 11237. Up to 2775 conditions per place. [2023-08-30 11:08:39,757 INFO L137 encePairwiseOnDemand]: 659/662 looper letters, 100 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2023-08-30 11:08:39,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 104 transitions, 585 flow [2023-08-30 11:08:39,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:08:39,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:08:39,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 933 transitions. [2023-08-30 11:08:39,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697885196374622 [2023-08-30 11:08:39,759 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 933 transitions. [2023-08-30 11:08:39,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 933 transitions. [2023-08-30 11:08:39,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:08:39,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 933 transitions. [2023-08-30 11:08:39,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.0) internal successors, (933), 3 states have internal predecessors, (933), 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 11:08:39,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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 11:08:39,764 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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 11:08:39,764 INFO L175 Difference]: Start difference. First operand has 52 places, 63 transitions, 251 flow. Second operand 3 states and 933 transitions. [2023-08-30 11:08:39,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 104 transitions, 585 flow [2023-08-30 11:08:39,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 104 transitions, 584 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:08:39,766 INFO L231 Difference]: Finished difference. Result has 54 places, 64 transitions, 262 flow [2023-08-30 11:08:39,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=54, PETRI_TRANSITIONS=64} [2023-08-30 11:08:39,767 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2023-08-30 11:08:39,767 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 64 transitions, 262 flow [2023-08-30 11:08:39,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 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 11:08:39,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:08:39,767 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:08:39,773 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 11:08:39,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:39,972 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:08:39,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:08:39,973 INFO L85 PathProgramCache]: Analyzing trace with hash 370284659, now seen corresponding path program 2 times [2023-08-30 11:08:39,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:08:39,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899370335] [2023-08-30 11:08:39,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:39,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:08:39,989 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 11:08:39,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [142076087] [2023-08-30 11:08:39,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:08:39,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:39,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:08:39,992 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:08:39,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 11:08:40,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:08:40,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:08:40,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 11:08:40,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:08:40,561 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 11:08:40,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:08:40,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:08:40,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899370335] [2023-08-30 11:08:40,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 11:08:40,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142076087] [2023-08-30 11:08:40,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142076087] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:08:40,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:08:40,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:08:40,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601498976] [2023-08-30 11:08:40,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:08:40,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:08:40,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:08:40,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:08:40,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:08:43,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-08-30 11:08:43,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 64 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 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 11:08:43,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:08:43,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-08-30 11:08:43,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:08:46,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-08-30 11:08:47,557 INFO L130 PetriNetUnfolder]: 3401/5559 cut-off events. [2023-08-30 11:08:47,558 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2023-08-30 11:08:47,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11266 conditions, 5559 events. 3401/5559 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 37027 event pairs, 2400 based on Foata normal form. 1/2864 useless extension candidates. Maximal degree in co-relation 11256. Up to 5514 conditions per place. [2023-08-30 11:08:47,580 INFO L137 encePairwiseOnDemand]: 659/662 looper letters, 55 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2023-08-30 11:08:47,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 63 transitions, 374 flow [2023-08-30 11:08:47,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:08:47,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:08:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 881 transitions. [2023-08-30 11:08:47,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436052366565962 [2023-08-30 11:08:47,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 881 transitions. [2023-08-30 11:08:47,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 881 transitions. [2023-08-30 11:08:47,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:08:47,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 881 transitions. [2023-08-30 11:08:47,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 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 11:08:47,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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 11:08:47,587 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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 11:08:47,587 INFO L175 Difference]: Start difference. First operand has 54 places, 64 transitions, 262 flow. Second operand 3 states and 881 transitions. [2023-08-30 11:08:47,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 63 transitions, 374 flow [2023-08-30 11:08:47,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 63 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:08:47,589 INFO L231 Difference]: Finished difference. Result has 54 places, 63 transitions, 262 flow [2023-08-30 11:08:47,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=54, PETRI_TRANSITIONS=63} [2023-08-30 11:08:47,590 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2023-08-30 11:08:47,590 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 63 transitions, 262 flow [2023-08-30 11:08:47,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 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 11:08:47,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:08:47,591 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 11:08:47,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 11:08:47,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:47,795 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:08:47,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:08:47,796 INFO L85 PathProgramCache]: Analyzing trace with hash -717067676, now seen corresponding path program 1 times [2023-08-30 11:08:47,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:08:47,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275905403] [2023-08-30 11:08:47,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:47,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:08:47,805 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 11:08:47,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [93485852] [2023-08-30 11:08:47,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:47,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:47,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:08:47,806 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:08:47,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 11:08:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:08:47,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 11:08:47,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:08:47,905 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 11:08:47,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:08:47,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:08:47,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275905403] [2023-08-30 11:08:47,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 11:08:47,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93485852] [2023-08-30 11:08:47,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93485852] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:08:47,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:08:47,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:08:47,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146197040] [2023-08-30 11:08:47,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:08:47,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:08:47,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:08:47,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:08:47,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:08:47,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 662 [2023-08-30 11:08:47,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 63 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 276.25) internal successors, (1105), 4 states have internal predecessors, (1105), 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 11:08:47,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:08:47,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 662 [2023-08-30 11:08:47,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:08:48,428 INFO L130 PetriNetUnfolder]: 4078/6664 cut-off events. [2023-08-30 11:08:48,429 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-08-30 11:08:48,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13490 conditions, 6664 events. 4078/6664 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 45678 event pairs, 2880 based on Foata normal form. 1/3443 useless extension candidates. Maximal degree in co-relation 13480. Up to 4969 conditions per place. [2023-08-30 11:08:48,447 INFO L137 encePairwiseOnDemand]: 656/662 looper letters, 114 selfloop transitions, 11 changer transitions 0/127 dead transitions. [2023-08-30 11:08:48,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 127 transitions, 664 flow [2023-08-30 11:08:48,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:08:48,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:08:48,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1208 transitions. [2023-08-30 11:08:48,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4561933534743202 [2023-08-30 11:08:48,451 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1208 transitions. [2023-08-30 11:08:48,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1208 transitions. [2023-08-30 11:08:48,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:08:48,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1208 transitions. [2023-08-30 11:08:48,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 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 11:08:48,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 662.0) internal successors, (3310), 5 states have internal predecessors, (3310), 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 11:08:48,456 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 662.0) internal successors, (3310), 5 states have internal predecessors, (3310), 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 11:08:48,456 INFO L175 Difference]: Start difference. First operand has 54 places, 63 transitions, 262 flow. Second operand 4 states and 1208 transitions. [2023-08-30 11:08:48,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 127 transitions, 664 flow [2023-08-30 11:08:48,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 127 transitions, 652 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:08:48,459 INFO L231 Difference]: Finished difference. Result has 56 places, 66 transitions, 301 flow [2023-08-30 11:08:48,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=56, PETRI_TRANSITIONS=66} [2023-08-30 11:08:48,461 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-08-30 11:08:48,461 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 66 transitions, 301 flow [2023-08-30 11:08:48,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.25) internal successors, (1105), 4 states have internal predecessors, (1105), 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 11:08:48,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:08:48,462 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-30 11:08:48,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 11:08:48,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:48,666 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:08:48,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:08:48,667 INFO L85 PathProgramCache]: Analyzing trace with hash -690549195, now seen corresponding path program 1 times [2023-08-30 11:08:48,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:08:48,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639791687] [2023-08-30 11:08:48,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:48,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:08:48,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 11:08:48,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960858553] [2023-08-30 11:08:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:48,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:48,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:08:48,680 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:08:48,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 11:08:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:08:48,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:08:48,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:08:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:08:48,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:08:48,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:08:48,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:08:48,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639791687] [2023-08-30 11:08:48,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 11:08:48,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960858553] [2023-08-30 11:08:48,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960858553] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:08:48,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 11:08:48,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-30 11:08:48,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283330249] [2023-08-30 11:08:48,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 11:08:48,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 11:08:48,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:08:48,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 11:08:48,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:08:48,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 662 [2023-08-30 11:08:48,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 66 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 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 11:08:48,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:08:48,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 662 [2023-08-30 11:08:48,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:08:49,762 INFO L130 PetriNetUnfolder]: 9163/14962 cut-off events. [2023-08-30 11:08:49,763 INFO L131 PetriNetUnfolder]: For 356/356 co-relation queries the response was YES. [2023-08-30 11:08:49,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30234 conditions, 14962 events. 9163/14962 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 110896 event pairs, 6480 based on Foata normal form. 0/7715 useless extension candidates. Maximal degree in co-relation 30223. Up to 3295 conditions per place. [2023-08-30 11:08:49,811 INFO L137 encePairwiseOnDemand]: 659/662 looper letters, 222 selfloop transitions, 5 changer transitions 0/229 dead transitions. [2023-08-30 11:08:49,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 229 transitions, 1296 flow [2023-08-30 11:08:49,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:08:49,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:08:49,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1891 transitions. [2023-08-30 11:08:49,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47608257804632426 [2023-08-30 11:08:49,815 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1891 transitions. [2023-08-30 11:08:49,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1891 transitions. [2023-08-30 11:08:49,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:08:49,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1891 transitions. [2023-08-30 11:08:49,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 315.1666666666667) internal successors, (1891), 6 states have internal predecessors, (1891), 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 11:08:49,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 662.0) internal successors, (4634), 7 states have internal predecessors, (4634), 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 11:08:49,822 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 662.0) internal successors, (4634), 7 states have internal predecessors, (4634), 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 11:08:49,822 INFO L175 Difference]: Start difference. First operand has 56 places, 66 transitions, 301 flow. Second operand 6 states and 1891 transitions. [2023-08-30 11:08:49,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 229 transitions, 1296 flow [2023-08-30 11:08:49,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 229 transitions, 1288 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-30 11:08:49,826 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 331 flow [2023-08-30 11:08:49,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=331, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2023-08-30 11:08:49,827 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2023-08-30 11:08:49,827 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 331 flow [2023-08-30 11:08:49,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 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 11:08:49,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:08:49,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:08:49,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 11:08:50,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-08-30 11:08:50,043 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:08:50,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:08:50,044 INFO L85 PathProgramCache]: Analyzing trace with hash -53912874, now seen corresponding path program 1 times [2023-08-30 11:08:50,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:08:50,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017231510] [2023-08-30 11:08:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:50,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:08:50,051 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 11:08:50,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470754701] [2023-08-30 11:08:50,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:50,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:50,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:08:50,053 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:08:50,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 11:08:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:08:50,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:08:50,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:08:50,163 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 11:08:50,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:08:50,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:08:50,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017231510] [2023-08-30 11:08:50,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 11:08:50,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470754701] [2023-08-30 11:08:50,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470754701] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:08:50,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:08:50,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 11:08:50,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690855247] [2023-08-30 11:08:50,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:08:50,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:08:50,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:08:50,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:08:50,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:08:50,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 662 [2023-08-30 11:08:50,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 331 flow. Second operand has 5 states, 5 states have (on average 273.6) internal successors, (1368), 5 states have internal predecessors, (1368), 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 11:08:50,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:08:50,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 662 [2023-08-30 11:08:50,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:08:51,472 INFO L130 PetriNetUnfolder]: 10910/18934 cut-off events. [2023-08-30 11:08:51,472 INFO L131 PetriNetUnfolder]: For 540/540 co-relation queries the response was YES. [2023-08-30 11:08:51,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38544 conditions, 18934 events. 10910/18934 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 152155 event pairs, 6155 based on Foata normal form. 0/11102 useless extension candidates. Maximal degree in co-relation 38529. Up to 12676 conditions per place. [2023-08-30 11:08:51,532 INFO L137 encePairwiseOnDemand]: 653/662 looper letters, 162 selfloop transitions, 17 changer transitions 0/180 dead transitions. [2023-08-30 11:08:51,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 180 transitions, 1047 flow [2023-08-30 11:08:51,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:08:51,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:08:51,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2047 transitions. [2023-08-30 11:08:51,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417350021579629 [2023-08-30 11:08:51,537 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2047 transitions. [2023-08-30 11:08:51,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2047 transitions. [2023-08-30 11:08:51,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:08:51,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2047 transitions. [2023-08-30 11:08:51,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 292.42857142857144) internal successors, (2047), 7 states have internal predecessors, (2047), 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 11:08:51,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 662.0) internal successors, (5296), 8 states have internal predecessors, (5296), 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 11:08:51,544 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 662.0) internal successors, (5296), 8 states have internal predecessors, (5296), 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 11:08:51,544 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 331 flow. Second operand 7 states and 2047 transitions. [2023-08-30 11:08:51,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 180 transitions, 1047 flow [2023-08-30 11:08:51,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 180 transitions, 1023 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 11:08:51,548 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 443 flow [2023-08-30 11:08:51,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=443, PETRI_PLACES=74, PETRI_TRANSITIONS=77} [2023-08-30 11:08:51,548 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2023-08-30 11:08:51,548 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 443 flow [2023-08-30 11:08:51,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.6) internal successors, (1368), 5 states have internal predecessors, (1368), 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 11:08:51,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:08:51,549 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 11:08:51,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 11:08:51,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 11:08:51,753 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:08:51,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:08:51,753 INFO L85 PathProgramCache]: Analyzing trace with hash 50329037, now seen corresponding path program 1 times [2023-08-30 11:08:51,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:08:51,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768650822] [2023-08-30 11:08:51,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:51,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:08:51,765 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 11:08:51,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1774836602] [2023-08-30 11:08:51,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:51,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:51,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:08:51,766 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:08:51,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 11:08:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:08:51,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 11:08:51,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:08:51,885 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:08:51,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:08:51,920 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:08:51,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:08:51,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768650822] [2023-08-30 11:08:51,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 11:08:51,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774836602] [2023-08-30 11:08:51,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774836602] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:08:51,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 11:08:51,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-08-30 11:08:51,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294663359] [2023-08-30 11:08:51,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 11:08:51,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 11:08:51,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:08:51,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 11:08:51,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 11:08:52,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 662 [2023-08-30 11:08:52,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 77 transitions, 443 flow. Second operand has 10 states, 10 states have (on average 270.2) internal successors, (2702), 10 states have internal predecessors, (2702), 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 11:08:52,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:08:52,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 662 [2023-08-30 11:08:52,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:08:54,085 INFO L130 PetriNetUnfolder]: 14627/25157 cut-off events. [2023-08-30 11:08:54,085 INFO L131 PetriNetUnfolder]: For 7435/8437 co-relation queries the response was YES. [2023-08-30 11:08:54,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55126 conditions, 25157 events. 14627/25157 cut-off events. For 7435/8437 co-relation queries the response was YES. Maximal size of possible extension queue 1493. Compared 218411 event pairs, 10728 based on Foata normal form. 1003/16882 useless extension candidates. Maximal degree in co-relation 55105. Up to 15931 conditions per place. [2023-08-30 11:08:54,182 INFO L137 encePairwiseOnDemand]: 651/662 looper letters, 180 selfloop transitions, 72 changer transitions 0/256 dead transitions. [2023-08-30 11:08:54,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 256 transitions, 1562 flow [2023-08-30 11:08:54,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 11:08:54,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 11:08:54,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3704 transitions. [2023-08-30 11:08:54,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43039739716476877 [2023-08-30 11:08:54,189 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3704 transitions. [2023-08-30 11:08:54,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3704 transitions. [2023-08-30 11:08:54,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:08:54,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3704 transitions. [2023-08-30 11:08:54,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 284.9230769230769) internal successors, (3704), 13 states have internal predecessors, (3704), 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 11:08:54,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 662.0) internal successors, (9268), 14 states have internal predecessors, (9268), 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 11:08:54,203 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 662.0) internal successors, (9268), 14 states have internal predecessors, (9268), 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 11:08:54,203 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 443 flow. Second operand 13 states and 3704 transitions. [2023-08-30 11:08:54,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 256 transitions, 1562 flow [2023-08-30 11:08:54,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 256 transitions, 1562 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 11:08:54,235 INFO L231 Difference]: Finished difference. Result has 89 places, 118 transitions, 953 flow [2023-08-30 11:08:54,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=953, PETRI_PLACES=89, PETRI_TRANSITIONS=118} [2023-08-30 11:08:54,236 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 36 predicate places. [2023-08-30 11:08:54,236 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 118 transitions, 953 flow [2023-08-30 11:08:54,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 270.2) internal successors, (2702), 10 states have internal predecessors, (2702), 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 11:08:54,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:08:54,237 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 11:08:54,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 11:08:54,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 11:08:54,442 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:08:54,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:08:54,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2068288911, now seen corresponding path program 1 times [2023-08-30 11:08:54,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:08:54,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735280843] [2023-08-30 11:08:54,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:54,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:08:54,457 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 11:08:54,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022677277] [2023-08-30 11:08:54,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:54,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:54,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:08:54,458 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:08:54,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 11:08:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:08:54,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 11:08:54,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:08:54,576 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 11:08:54,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:08:54,612 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 11:08:54,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:08:54,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735280843] [2023-08-30 11:08:54,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 11:08:54,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022677277] [2023-08-30 11:08:54,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022677277] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:08:54,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 11:08:54,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-08-30 11:08:54,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729836829] [2023-08-30 11:08:54,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 11:08:54,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 11:08:54,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:08:54,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 11:08:54,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 11:08:54,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-08-30 11:08:54,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 118 transitions, 953 flow. Second operand has 12 states, 12 states have (on average 281.25) internal successors, (3375), 12 states have internal predecessors, (3375), 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 11:08:54,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:08:54,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-08-30 11:08:54,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:08:58,500 INFO L130 PetriNetUnfolder]: 27095/46355 cut-off events. [2023-08-30 11:08:58,500 INFO L131 PetriNetUnfolder]: For 13685/15341 co-relation queries the response was YES. [2023-08-30 11:08:58,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102227 conditions, 46355 events. 27095/46355 cut-off events. For 13685/15341 co-relation queries the response was YES. Maximal size of possible extension queue 2191. Compared 421768 event pairs, 19800 based on Foata normal form. 1722/30887 useless extension candidates. Maximal degree in co-relation 102203. Up to 7357 conditions per place. [2023-08-30 11:08:58,685 INFO L137 encePairwiseOnDemand]: 654/662 looper letters, 435 selfloop transitions, 74 changer transitions 0/513 dead transitions. [2023-08-30 11:08:58,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 513 transitions, 3625 flow [2023-08-30 11:08:58,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 11:08:58,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 11:08:58,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3782 transitions. [2023-08-30 11:08:58,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47608257804632426 [2023-08-30 11:08:58,691 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3782 transitions. [2023-08-30 11:08:58,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3782 transitions. [2023-08-30 11:08:58,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:08:58,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3782 transitions. [2023-08-30 11:08:58,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 315.1666666666667) internal successors, (3782), 12 states have internal predecessors, (3782), 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 11:08:58,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 662.0) internal successors, (8606), 13 states have internal predecessors, (8606), 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 11:08:58,704 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 662.0) internal successors, (8606), 13 states have internal predecessors, (8606), 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 11:08:58,705 INFO L175 Difference]: Start difference. First operand has 89 places, 118 transitions, 953 flow. Second operand 12 states and 3782 transitions. [2023-08-30 11:08:58,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 513 transitions, 3625 flow [2023-08-30 11:08:58,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 513 transitions, 3587 flow, removed 19 selfloop flow, removed 0 redundant places. [2023-08-30 11:08:58,796 INFO L231 Difference]: Finished difference. Result has 106 places, 154 transitions, 1487 flow [2023-08-30 11:08:58,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1487, PETRI_PLACES=106, PETRI_TRANSITIONS=154} [2023-08-30 11:08:58,797 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 53 predicate places. [2023-08-30 11:08:58,797 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 154 transitions, 1487 flow [2023-08-30 11:08:58,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 281.25) internal successors, (3375), 12 states have internal predecessors, (3375), 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 11:08:58,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:08:58,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:08:58,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 11:08:58,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 11:08:58,998 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:08:58,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:08:58,998 INFO L85 PathProgramCache]: Analyzing trace with hash 21882226, now seen corresponding path program 1 times [2023-08-30 11:08:58,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:08:58,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247909312] [2023-08-30 11:08:58,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:58,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:08:59,006 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 11:08:59,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754185793] [2023-08-30 11:08:59,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:59,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:59,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:08:59,009 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:08:59,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 11:08:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:08:59,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:08:59,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:08:59,110 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 11:08:59,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:08:59,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:08:59,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247909312] [2023-08-30 11:08:59,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 11:08:59,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754185793] [2023-08-30 11:08:59,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754185793] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:08:59,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:08:59,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 11:08:59,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081921512] [2023-08-30 11:08:59,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:08:59,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:08:59,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:08:59,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:08:59,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:08:59,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 662 [2023-08-30 11:08:59,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 154 transitions, 1487 flow. Second operand has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 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 11:08:59,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:08:59,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 662 [2023-08-30 11:08:59,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:09:02,661 INFO L130 PetriNetUnfolder]: 23642/40982 cut-off events. [2023-08-30 11:09:02,661 INFO L131 PetriNetUnfolder]: For 11448/13073 co-relation queries the response was YES. [2023-08-30 11:09:02,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91377 conditions, 40982 events. 23642/40982 cut-off events. For 11448/13073 co-relation queries the response was YES. Maximal size of possible extension queue 1844. Compared 367821 event pairs, 17676 based on Foata normal form. 1639/28341 useless extension candidates. Maximal degree in co-relation 91346. Up to 39368 conditions per place. [2023-08-30 11:09:02,839 INFO L137 encePairwiseOnDemand]: 655/662 looper letters, 181 selfloop transitions, 12 changer transitions 7/203 dead transitions. [2023-08-30 11:09:02,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 203 transitions, 2252 flow [2023-08-30 11:09:02,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:09:02,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:09:02,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1456 transitions. [2023-08-30 11:09:02,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398791540785498 [2023-08-30 11:09:02,842 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1456 transitions. [2023-08-30 11:09:02,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1456 transitions. [2023-08-30 11:09:02,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:09:02,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1456 transitions. [2023-08-30 11:09:02,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.2) internal successors, (1456), 5 states have internal predecessors, (1456), 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 11:09:02,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 662.0) internal successors, (3972), 6 states have internal predecessors, (3972), 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 11:09:02,848 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 662.0) internal successors, (3972), 6 states have internal predecessors, (3972), 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 11:09:02,848 INFO L175 Difference]: Start difference. First operand has 106 places, 154 transitions, 1487 flow. Second operand 5 states and 1456 transitions. [2023-08-30 11:09:02,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 203 transitions, 2252 flow [2023-08-30 11:09:02,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 203 transitions, 2002 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-08-30 11:09:02,934 INFO L231 Difference]: Finished difference. Result has 108 places, 156 transitions, 1349 flow [2023-08-30 11:09:02,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1349, PETRI_PLACES=108, PETRI_TRANSITIONS=156} [2023-08-30 11:09:02,935 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 55 predicate places. [2023-08-30 11:09:02,935 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 156 transitions, 1349 flow [2023-08-30 11:09:02,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 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 11:09:02,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:09:02,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:09:02,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-30 11:09:03,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-30 11:09:03,140 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:09:03,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:09:03,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1821945608, now seen corresponding path program 1 times [2023-08-30 11:09:03,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:09:03,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699502835] [2023-08-30 11:09:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:09:03,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:09:03,148 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 11:09:03,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873193832] [2023-08-30 11:09:03,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:09:03,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:09:03,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:09:03,149 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:09:03,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 11:09:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:09:03,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 11:09:03,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:09:03,248 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 11:09:03,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:09:03,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:09:03,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699502835] [2023-08-30 11:09:03,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 11:09:03,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873193832] [2023-08-30 11:09:03,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873193832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:09:03,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:09:03,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:09:03,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375667936] [2023-08-30 11:09:03,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:09:03,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:09:03,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:09:03,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:09:03,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:09:03,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 662 [2023-08-30 11:09:03,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 156 transitions, 1349 flow. Second operand has 3 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 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 11:09:03,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:09:03,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 662 [2023-08-30 11:09:03,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:09:06,421 INFO L130 PetriNetUnfolder]: 22817/40041 cut-off events. [2023-08-30 11:09:06,421 INFO L131 PetriNetUnfolder]: For 11775/11914 co-relation queries the response was YES. [2023-08-30 11:09:06,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93277 conditions, 40041 events. 22817/40041 cut-off events. For 11775/11914 co-relation queries the response was YES. Maximal size of possible extension queue 1653. Compared 369864 event pairs, 1535 based on Foata normal form. 139/28507 useless extension candidates. Maximal degree in co-relation 93243. Up to 34198 conditions per place. [2023-08-30 11:09:06,593 INFO L137 encePairwiseOnDemand]: 660/662 looper letters, 167 selfloop transitions, 3 changer transitions 0/172 dead transitions. [2023-08-30 11:09:06,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 172 transitions, 1724 flow [2023-08-30 11:09:06,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:09:06,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:09:06,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 919 transitions. [2023-08-30 11:09:06,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46273917421953675 [2023-08-30 11:09:06,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 919 transitions. [2023-08-30 11:09:06,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 919 transitions. [2023-08-30 11:09:06,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:09:06,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 919 transitions. [2023-08-30 11:09:06,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 306.3333333333333) internal successors, (919), 3 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 11:09:06,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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 11:09:06,600 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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 11:09:06,600 INFO L175 Difference]: Start difference. First operand has 108 places, 156 transitions, 1349 flow. Second operand 3 states and 919 transitions. [2023-08-30 11:09:06,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 172 transitions, 1724 flow [2023-08-30 11:09:06,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 172 transitions, 1704 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:09:06,791 INFO L231 Difference]: Finished difference. Result has 107 places, 155 transitions, 1333 flow [2023-08-30 11:09:06,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=1327, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1333, PETRI_PLACES=107, PETRI_TRANSITIONS=155} [2023-08-30 11:09:06,791 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 54 predicate places. [2023-08-30 11:09:06,791 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 155 transitions, 1333 flow [2023-08-30 11:09:06,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 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 11:09:06,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:09:06,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:09:06,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 11:09:06,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 11:09:06,992 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:09:06,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:09:06,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1821945609, now seen corresponding path program 1 times [2023-08-30 11:09:06,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:09:06,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625421483] [2023-08-30 11:09:06,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:09:06,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:09:07,001 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 11:09:07,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462369268] [2023-08-30 11:09:07,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:09:07,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:09:07,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:09:07,003 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:09:07,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 11:09:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:09:07,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 11:09:07,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:09:07,103 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 11:09:07,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:09:07,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:09:07,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625421483] [2023-08-30 11:09:07,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 11:09:07,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462369268] [2023-08-30 11:09:07,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462369268] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:09:07,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:09:07,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:09:07,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438067674] [2023-08-30 11:09:07,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:09:07,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:09:07,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:09:07,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:09:07,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:09:07,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 662 [2023-08-30 11:09:07,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 155 transitions, 1333 flow. Second operand has 3 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 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 11:09:07,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:09:07,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 662 [2023-08-30 11:09:07,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:09:11,784 INFO L130 PetriNetUnfolder]: 32189/55958 cut-off events. [2023-08-30 11:09:11,784 INFO L131 PetriNetUnfolder]: For 28333/28560 co-relation queries the response was YES. [2023-08-30 11:09:11,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132694 conditions, 55958 events. 32189/55958 cut-off events. For 28333/28560 co-relation queries the response was YES. Maximal size of possible extension queue 2186. Compared 504377 event pairs, 16500 based on Foata normal form. 227/40716 useless extension candidates. Maximal degree in co-relation 132660. Up to 28384 conditions per place. [2023-08-30 11:09:12,076 INFO L137 encePairwiseOnDemand]: 659/662 looper letters, 174 selfloop transitions, 4 changer transitions 0/180 dead transitions. [2023-08-30 11:09:12,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 180 transitions, 1752 flow [2023-08-30 11:09:12,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:09:12,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:09:12,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 927 transitions. [2023-08-30 11:09:12,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46676737160120846 [2023-08-30 11:09:12,079 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 927 transitions. [2023-08-30 11:09:12,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 927 transitions. [2023-08-30 11:09:12,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:09:12,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 927 transitions. [2023-08-30 11:09:12,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 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 11:09:12,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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 11:09:12,083 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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 11:09:12,083 INFO L175 Difference]: Start difference. First operand has 107 places, 155 transitions, 1333 flow. Second operand 3 states and 927 transitions. [2023-08-30 11:09:12,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 180 transitions, 1752 flow [2023-08-30 11:09:12,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 180 transitions, 1749 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:09:12,345 INFO L231 Difference]: Finished difference. Result has 109 places, 156 transitions, 1348 flow [2023-08-30 11:09:12,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1348, PETRI_PLACES=109, PETRI_TRANSITIONS=156} [2023-08-30 11:09:12,346 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 56 predicate places. [2023-08-30 11:09:12,346 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 156 transitions, 1348 flow [2023-08-30 11:09:12,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 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 11:09:12,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:09:12,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:09:12,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 11:09:12,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:09:12,549 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:09:12,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:09:12,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1787278130, now seen corresponding path program 1 times [2023-08-30 11:09:12,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:09:12,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857036555] [2023-08-30 11:09:12,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:09:12,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:09:12,560 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 11:09:12,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84446049] [2023-08-30 11:09:12,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:09:12,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:09:12,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:09:12,561 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:09:12,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 11:09:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:09:12,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:09:12,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:09:12,711 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 11:09:12,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:09:12,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:09:12,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857036555] [2023-08-30 11:09:12,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 11:09:12,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84446049] [2023-08-30 11:09:12,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84446049] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:09:12,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:09:12,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 11:09:12,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222113720] [2023-08-30 11:09:12,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:09:12,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:09:12,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:09:12,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:09:12,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:09:12,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 662 [2023-08-30 11:09:12,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 156 transitions, 1348 flow. Second operand has 5 states, 5 states have (on average 274.2) internal successors, (1371), 5 states have internal predecessors, (1371), 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 11:09:12,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:09:12,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 662 [2023-08-30 11:09:12,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:09:18,353 INFO L130 PetriNetUnfolder]: 31914/57626 cut-off events. [2023-08-30 11:09:18,354 INFO L131 PetriNetUnfolder]: For 22457/24482 co-relation queries the response was YES. [2023-08-30 11:09:18,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140448 conditions, 57626 events. 31914/57626 cut-off events. For 22457/24482 co-relation queries the response was YES. Maximal size of possible extension queue 2483. Compared 570525 event pairs, 19602 based on Foata normal form. 2279/45658 useless extension candidates. Maximal degree in co-relation 140413. Up to 38542 conditions per place. [2023-08-30 11:09:18,670 INFO L137 encePairwiseOnDemand]: 650/662 looper letters, 196 selfloop transitions, 77 changer transitions 4/282 dead transitions. [2023-08-30 11:09:18,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 282 transitions, 2779 flow [2023-08-30 11:09:18,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:09:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:09:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2027 transitions. [2023-08-30 11:09:18,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43741907639188604 [2023-08-30 11:09:18,674 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2027 transitions. [2023-08-30 11:09:18,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2027 transitions. [2023-08-30 11:09:18,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:09:18,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2027 transitions. [2023-08-30 11:09:18,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 289.57142857142856) internal successors, (2027), 7 states have internal predecessors, (2027), 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 11:09:18,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 662.0) internal successors, (5296), 8 states have internal predecessors, (5296), 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 11:09:18,681 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 662.0) internal successors, (5296), 8 states have internal predecessors, (5296), 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 11:09:18,681 INFO L175 Difference]: Start difference. First operand has 109 places, 156 transitions, 1348 flow. Second operand 7 states and 2027 transitions. [2023-08-30 11:09:18,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 282 transitions, 2779 flow [2023-08-30 11:09:19,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 282 transitions, 2771 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:09:19,032 INFO L231 Difference]: Finished difference. Result has 120 places, 198 transitions, 2173 flow [2023-08-30 11:09:19,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2173, PETRI_PLACES=120, PETRI_TRANSITIONS=198} [2023-08-30 11:09:19,033 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 67 predicate places. [2023-08-30 11:09:19,033 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 198 transitions, 2173 flow [2023-08-30 11:09:19,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 274.2) internal successors, (1371), 5 states have internal predecessors, (1371), 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 11:09:19,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:09:19,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:09:19,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-30 11:09:19,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 11:09:19,238 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:09:19,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:09:19,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1787278116, now seen corresponding path program 1 times [2023-08-30 11:09:19,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:09:19,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582864423] [2023-08-30 11:09:19,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:09:19,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:09:19,246 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 11:09:19,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471895136] [2023-08-30 11:09:19,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:09:19,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:09:19,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:09:19,248 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:09:19,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 11:09:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:09:19,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 11:09:19,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:09:19,358 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 11:09:19,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:09:19,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:09:19,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582864423] [2023-08-30 11:09:19,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 11:09:19,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471895136] [2023-08-30 11:09:19,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471895136] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:09:19,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:09:19,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:09:19,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118260460] [2023-08-30 11:09:19,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:09:19,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:09:19,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:09:19,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:09:19,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:09:19,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 662 [2023-08-30 11:09:19,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 198 transitions, 2173 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 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 11:09:19,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:09:19,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 662 [2023-08-30 11:09:19,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:09:24,792 INFO L130 PetriNetUnfolder]: 30410/55036 cut-off events. [2023-08-30 11:09:24,792 INFO L131 PetriNetUnfolder]: For 36343/38109 co-relation queries the response was YES. [2023-08-30 11:09:25,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152941 conditions, 55036 events. 30410/55036 cut-off events. For 36343/38109 co-relation queries the response was YES. Maximal size of possible extension queue 2169. Compared 534029 event pairs, 2001 based on Foata normal form. 1766/46054 useless extension candidates. Maximal degree in co-relation 152901. Up to 47512 conditions per place. [2023-08-30 11:09:25,132 INFO L137 encePairwiseOnDemand]: 660/662 looper letters, 200 selfloop transitions, 2 changer transitions 0/205 dead transitions. [2023-08-30 11:09:25,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 205 transitions, 2602 flow [2023-08-30 11:09:25,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:09:25,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:09:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 908 transitions. [2023-08-30 11:09:25,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45720040281973817 [2023-08-30 11:09:25,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 908 transitions. [2023-08-30 11:09:25,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 908 transitions. [2023-08-30 11:09:25,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:09:25,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 908 transitions. [2023-08-30 11:09:25,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 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 11:09:25,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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 11:09:25,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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 11:09:25,138 INFO L175 Difference]: Start difference. First operand has 120 places, 198 transitions, 2173 flow. Second operand 3 states and 908 transitions. [2023-08-30 11:09:25,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 205 transitions, 2602 flow [2023-08-30 11:09:25,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 205 transitions, 2590 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-30 11:09:25,661 INFO L231 Difference]: Finished difference. Result has 121 places, 197 transitions, 2163 flow [2023-08-30 11:09:25,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=2159, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2163, PETRI_PLACES=121, PETRI_TRANSITIONS=197} [2023-08-30 11:09:25,662 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 68 predicate places. [2023-08-30 11:09:25,662 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 197 transitions, 2163 flow [2023-08-30 11:09:25,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 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 11:09:25,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:09:25,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:09:25,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 11:09:25,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 11:09:25,867 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:09:25,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:09:25,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1787278115, now seen corresponding path program 1 times [2023-08-30 11:09:25,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:09:25,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739411307] [2023-08-30 11:09:25,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:09:25,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:09:25,876 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 11:09:25,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090940081] [2023-08-30 11:09:25,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:09:25,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:09:25,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:09:25,885 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:09:25,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 11:09:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:09:26,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 11:09:26,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:09:26,020 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 11:09:26,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:09:26,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:09:26,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739411307] [2023-08-30 11:09:26,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 11:09:26,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090940081] [2023-08-30 11:09:26,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090940081] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:09:26,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:09:26,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:09:26,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465425310] [2023-08-30 11:09:26,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:09:26,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:09:26,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:09:26,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:09:26,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:09:26,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 662 [2023-08-30 11:09:26,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 197 transitions, 2163 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 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 11:09:26,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:09:26,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 662 [2023-08-30 11:09:26,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:09:34,856 INFO L130 PetriNetUnfolder]: 47693/85270 cut-off events. [2023-08-30 11:09:34,857 INFO L131 PetriNetUnfolder]: For 57112/59914 co-relation queries the response was YES. [2023-08-30 11:09:35,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236975 conditions, 85270 events. 47693/85270 cut-off events. For 57112/59914 co-relation queries the response was YES. Maximal size of possible extension queue 3248. Compared 858679 event pairs, 22093 based on Foata normal form. 2802/69843 useless extension candidates. Maximal degree in co-relation 236934. Up to 49074 conditions per place. [2023-08-30 11:09:35,470 INFO L137 encePairwiseOnDemand]: 659/662 looper letters, 214 selfloop transitions, 3 changer transitions 0/220 dead transitions. [2023-08-30 11:09:35,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 220 transitions, 2701 flow [2023-08-30 11:09:35,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:09:35,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:09:35,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 923 transitions. [2023-08-30 11:09:35,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4647532729103726 [2023-08-30 11:09:35,472 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 923 transitions. [2023-08-30 11:09:35,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 923 transitions. [2023-08-30 11:09:35,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:09:35,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 923 transitions. [2023-08-30 11:09:35,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 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 11:09:35,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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 11:09:35,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 662.0) internal successors, (2648), 4 states have internal predecessors, (2648), 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 11:09:35,476 INFO L175 Difference]: Start difference. First operand has 121 places, 197 transitions, 2163 flow. Second operand 3 states and 923 transitions. [2023-08-30 11:09:35,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 220 transitions, 2701 flow [2023-08-30 11:09:36,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 220 transitions, 2699 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:09:36,420 INFO L231 Difference]: Finished difference. Result has 123 places, 198 transitions, 2176 flow [2023-08-30 11:09:36,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=2161, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2176, PETRI_PLACES=123, PETRI_TRANSITIONS=198} [2023-08-30 11:09:36,420 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 70 predicate places. [2023-08-30 11:09:36,420 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 198 transitions, 2176 flow [2023-08-30 11:09:36,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 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 11:09:36,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:09:36,421 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:09:36,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 11:09:36,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 11:09:36,622 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:09:36,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:09:36,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1456899908, now seen corresponding path program 1 times [2023-08-30 11:09:36,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:09:36,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144000416] [2023-08-30 11:09:36,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:09:36,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:09:36,631 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 11:09:36,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928076052] [2023-08-30 11:09:36,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:09:36,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:09:36,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:09:36,633 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:09:36,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 11:09:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:09:36,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 11:09:36,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:09:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:09:36,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:09:36,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:09:36,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:09:36,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144000416] [2023-08-30 11:09:36,839 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 11:09:36,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928076052] [2023-08-30 11:09:36,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928076052] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:09:36,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 11:09:36,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 11:09:36,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853837250] [2023-08-30 11:09:36,840 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 11:09:36,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 11:09:36,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:09:36,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 11:09:36,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-08-30 11:09:37,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 662 [2023-08-30 11:09:37,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 198 transitions, 2176 flow. Second operand has 11 states, 11 states have (on average 266.72727272727275) internal successors, (2934), 11 states have internal predecessors, (2934), 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 11:09:37,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:09:37,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 662 [2023-08-30 11:09:37,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:09:51,277 INFO L130 PetriNetUnfolder]: 76617/136729 cut-off events. [2023-08-30 11:09:51,278 INFO L131 PetriNetUnfolder]: For 115805/116015 co-relation queries the response was YES. [2023-08-30 11:09:51,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408047 conditions, 136729 events. 76617/136729 cut-off events. For 115805/116015 co-relation queries the response was YES. Maximal size of possible extension queue 4459. Compared 1449425 event pairs, 21134 based on Foata normal form. 2910/111223 useless extension candidates. Maximal degree in co-relation 408005. Up to 38623 conditions per place. [2023-08-30 11:09:52,281 INFO L137 encePairwiseOnDemand]: 650/662 looper letters, 322 selfloop transitions, 32 changer transitions 48/404 dead transitions. [2023-08-30 11:09:52,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 404 transitions, 4181 flow [2023-08-30 11:09:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 11:09:52,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 11:09:52,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4709 transitions. [2023-08-30 11:09:52,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41842900302114805 [2023-08-30 11:09:52,287 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4709 transitions. [2023-08-30 11:09:52,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4709 transitions. [2023-08-30 11:09:52,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:09:52,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4709 transitions. [2023-08-30 11:09:52,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 277.0) internal successors, (4709), 17 states have internal predecessors, (4709), 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 11:09:52,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 662.0) internal successors, (11916), 18 states have internal predecessors, (11916), 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 11:09:52,299 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 662.0) internal successors, (11916), 18 states have internal predecessors, (11916), 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 11:09:52,299 INFO L175 Difference]: Start difference. First operand has 123 places, 198 transitions, 2176 flow. Second operand 17 states and 4709 transitions. [2023-08-30 11:09:52,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 404 transitions, 4181 flow [2023-08-30 11:09:54,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 404 transitions, 4173 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:09:54,171 INFO L231 Difference]: Finished difference. Result has 145 places, 203 transitions, 2326 flow [2023-08-30 11:09:54,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=2173, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2326, PETRI_PLACES=145, PETRI_TRANSITIONS=203} [2023-08-30 11:09:54,171 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 92 predicate places. [2023-08-30 11:09:54,171 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 203 transitions, 2326 flow [2023-08-30 11:09:54,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 266.72727272727275) internal successors, (2934), 11 states have internal predecessors, (2934), 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 11:09:54,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:09:54,172 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1] [2023-08-30 11:09:54,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-30 11:09:54,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:09:54,372 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:09:54,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:09:54,373 INFO L85 PathProgramCache]: Analyzing trace with hash 497683039, now seen corresponding path program 2 times [2023-08-30 11:09:54,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:09:54,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868462974] [2023-08-30 11:09:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:09:54,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:09:54,384 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 11:09:54,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493034627] [2023-08-30 11:09:54,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:09:54,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:09:54,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:09:54,385 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:09:54,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 11:09:54,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:09:54,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:09:54,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:09:54,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:09:54,523 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 11:09:54,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:09:54,536 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 11:09:54,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:09:54,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868462974] [2023-08-30 11:09:54,537 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 11:09:54,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493034627] [2023-08-30 11:09:54,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493034627] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:09:54,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 11:09:54,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2023-08-30 11:09:54,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455264638] [2023-08-30 11:09:54,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 11:09:54,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:09:54,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:09:54,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:09:54,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:09:54,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 662 [2023-08-30 11:09:54,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 203 transitions, 2326 flow. Second operand has 4 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 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 11:09:54,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:09:54,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 662 [2023-08-30 11:09:54,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:10:07,662 INFO L130 PetriNetUnfolder]: 64284/116792 cut-off events. [2023-08-30 11:10:07,662 INFO L131 PetriNetUnfolder]: For 170078/172826 co-relation queries the response was YES. [2023-08-30 11:10:08,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379211 conditions, 116792 events. 64284/116792 cut-off events. For 170078/172826 co-relation queries the response was YES. Maximal size of possible extension queue 4790. Compared 1263545 event pairs, 55242 based on Foata normal form. 2824/94294 useless extension candidates. Maximal degree in co-relation 379163. Up to 114292 conditions per place. [2023-08-30 11:10:08,632 INFO L137 encePairwiseOnDemand]: 657/662 looper letters, 118 selfloop transitions, 90 changer transitions 4/218 dead transitions. [2023-08-30 11:10:08,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 218 transitions, 2834 flow [2023-08-30 11:10:08,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:10:08,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:10:08,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1172 transitions. [2023-08-30 11:10:08,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425981873111782 [2023-08-30 11:10:08,633 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1172 transitions. [2023-08-30 11:10:08,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1172 transitions. [2023-08-30 11:10:08,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:10:08,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1172 transitions. [2023-08-30 11:10:08,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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 11:10:08,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 662.0) internal successors, (3310), 5 states have internal predecessors, (3310), 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 11:10:08,637 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 662.0) internal successors, (3310), 5 states have internal predecessors, (3310), 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 11:10:08,637 INFO L175 Difference]: Start difference. First operand has 145 places, 203 transitions, 2326 flow. Second operand 4 states and 1172 transitions. [2023-08-30 11:10:08,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 218 transitions, 2834 flow [2023-08-30 11:10:10,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 218 transitions, 2741 flow, removed 12 selfloop flow, removed 7 redundant places. [2023-08-30 11:10:10,271 INFO L231 Difference]: Finished difference. Result has 136 places, 205 transitions, 2558 flow [2023-08-30 11:10:10,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=662, PETRI_DIFFERENCE_MINUEND_FLOW=2136, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2558, PETRI_PLACES=136, PETRI_TRANSITIONS=205} [2023-08-30 11:10:10,272 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 83 predicate places. [2023-08-30 11:10:10,272 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 205 transitions, 2558 flow [2023-08-30 11:10:10,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 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 11:10:10,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:10:10,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:10:10,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-30 11:10:10,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:10:10,477 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 11:10:10,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:10:10,477 INFO L85 PathProgramCache]: Analyzing trace with hash -103419605, now seen corresponding path program 1 times [2023-08-30 11:10:10,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:10:10,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150243892] [2023-08-30 11:10:10,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:10:10,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:10:10,485 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 11:10:10,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132334410] [2023-08-30 11:10:10,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:10:10,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:10:10,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:10:10,486 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:10:10,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-30 11:10:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:10:10,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 11:10:10,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:10:10,617 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 11:10:10,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:10:10,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:10:10,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150243892] [2023-08-30 11:10:10,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 11:10:10,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132334410] [2023-08-30 11:10:10,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132334410] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:10:10,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:10:10,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:10:10,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234664002] [2023-08-30 11:10:10,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:10:10,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:10:10,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:10:10,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:10:10,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:10:10,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 662 [2023-08-30 11:10:10,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 205 transitions, 2558 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 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 11:10:10,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:10:10,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 662 [2023-08-30 11:10:10,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand