./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-array-int-subst.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/chl-array-int-subst.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 d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 --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 10:49:53,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:49:53,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:49:53,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:49:53,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:49:53,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:49:53,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:49:53,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:49:53,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:49:53,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:49:53,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:49:53,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:49:53,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:49:53,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:49:53,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:49:53,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:49:53,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:49:53,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:49:53,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:49:53,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:49:53,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:49:53,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:49:53,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:49:53,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:49:53,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:49:53,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:49:53,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:49:53,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:49:53,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:49:53,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:49:53,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:49:53,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:49:53,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:49:53,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:49:53,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:49:53,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:49:53,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:49:53,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:49:53,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:49:53,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:49:53,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:49:53,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:49:53,999 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:49:54,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:49:54,000 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:49:54,000 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:49:54,001 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:49:54,001 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:49:54,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:49:54,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:49:54,002 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:49:54,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:49:54,003 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:49:54,003 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:49:54,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:49:54,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:49:54,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:49:54,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:49:54,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:49:54,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:49:54,005 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:49:54,005 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:49:54,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:49:54,006 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:49:54,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:49:54,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:49:54,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:49:54,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:49:54,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:49:54,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:49:54,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:49:54,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:49:54,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:49:54,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:49:54,009 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:49:54,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:49:54,009 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:49:54,009 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:49:54,010 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:49:54,010 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:49:54,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:49:54,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:49:54,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:49:54,352 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:49:54,353 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:49:54,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2023-08-30 10:49:55,586 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:49:55,785 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:49:55,785 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2023-08-30 10:49:55,791 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66fb66dbf/6d550954ea12434ebe44eefeee3e8ccc/FLAG2d5f47e2e [2023-08-30 10:49:55,802 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66fb66dbf/6d550954ea12434ebe44eefeee3e8ccc [2023-08-30 10:49:55,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:49:55,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:49:55,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:49:55,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:49:55,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:49:55,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:49:55" (1/1) ... [2023-08-30 10:49:55,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff6cf72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:49:55, skipping insertion in model container [2023-08-30 10:49:55,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:49:55" (1/1) ... [2023-08-30 10:49:55,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:49:55,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:49:55,960 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/chl-array-int-subst.wvr.c[2781,2794] [2023-08-30 10:49:55,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:49:55,974 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:49:56,008 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/chl-array-int-subst.wvr.c[2781,2794] [2023-08-30 10:49:56,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:49:56,038 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:49:56,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:49:56 WrapperNode [2023-08-30 10:49:56,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:49:56,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:49:56,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:49:56,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:49:56,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:49:56" (1/1) ... [2023-08-30 10:49:56,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:49:56" (1/1) ... [2023-08-30 10:49:56,107 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 347 [2023-08-30 10:49:56,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:49:56,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:49:56,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:49:56,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:49:56,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:49:56" (1/1) ... [2023-08-30 10:49:56,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:49:56" (1/1) ... [2023-08-30 10:49:56,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:49:56" (1/1) ... [2023-08-30 10:49:56,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:49:56" (1/1) ... [2023-08-30 10:49:56,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:49:56" (1/1) ... [2023-08-30 10:49:56,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:49:56" (1/1) ... [2023-08-30 10:49:56,162 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:49:56" (1/1) ... [2023-08-30 10:49:56,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:49:56" (1/1) ... [2023-08-30 10:49:56,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:49:56,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:49:56,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:49:56,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:49:56,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:49:56" (1/1) ... [2023-08-30 10:49:56,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:49:56,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:49:56,226 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 10:49:56,239 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 10:49:56,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:49:56,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:49:56,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:49:56,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:49:56,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 10:49:56,266 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 10:49:56,266 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 10:49:56,266 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 10:49:56,266 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 10:49:56,266 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 10:49:56,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:49:56,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 10:49:56,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:49:56,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:49:56,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:49:56,268 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 10:49:56,437 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:49:56,439 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:49:57,019 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:49:57,043 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:49:57,045 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 10:49:57,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:49:57 BoogieIcfgContainer [2023-08-30 10:49:57,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:49:57,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:49:57,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:49:57,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:49:57,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:49:55" (1/3) ... [2023-08-30 10:49:57,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6d8538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:49:57, skipping insertion in model container [2023-08-30 10:49:57,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:49:56" (2/3) ... [2023-08-30 10:49:57,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6d8538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:49:57, skipping insertion in model container [2023-08-30 10:49:57,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:49:57" (3/3) ... [2023-08-30 10:49:57,057 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2023-08-30 10:49:57,063 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:49:57,071 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:49:57,072 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-08-30 10:49:57,072 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:49:57,212 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 10:49:57,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 399 places, 424 transitions, 872 flow [2023-08-30 10:49:57,401 INFO L130 PetriNetUnfolder]: 35/421 cut-off events. [2023-08-30 10:49:57,401 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:49:57,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 421 events. 35/421 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1007 event pairs, 0 based on Foata normal form. 0/350 useless extension candidates. Maximal degree in co-relation 317. Up to 3 conditions per place. [2023-08-30 10:49:57,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 399 places, 424 transitions, 872 flow [2023-08-30 10:49:57,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 397 transitions, 809 flow [2023-08-30 10:49:57,432 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:49:57,451 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 397 transitions, 809 flow [2023-08-30 10:49:57,454 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 397 transitions, 809 flow [2023-08-30 10:49:57,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 397 transitions, 809 flow [2023-08-30 10:49:57,529 INFO L130 PetriNetUnfolder]: 33/397 cut-off events. [2023-08-30 10:49:57,529 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 10:49:57,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 397 events. 33/397 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 948 event pairs, 0 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 317. Up to 3 conditions per place. [2023-08-30 10:49:57,550 INFO L119 LiptonReduction]: Number of co-enabled transitions 38184 [2023-08-30 10:50:13,001 INFO L134 LiptonReduction]: Checked pairs total: 51131 [2023-08-30 10:50:13,003 INFO L136 LiptonReduction]: Total number of compositions: 489 [2023-08-30 10:50:13,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:50:13,032 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;@43216456, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:50:13,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2023-08-30 10:50:13,039 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 10:50:13,040 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:50:13,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:50:13,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 10:50:13,042 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 10:50:13,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:50:13,046 INFO L85 PathProgramCache]: Analyzing trace with hash 55154, now seen corresponding path program 1 times [2023-08-30 10:50:13,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:50:13,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873411422] [2023-08-30 10:50:13,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:50:13,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:50:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:50:13,365 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 10:50:13,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:50:13,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873411422] [2023-08-30 10:50:13,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873411422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:50:13,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:50:13,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:50:13,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424861959] [2023-08-30 10:50:13,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:50:13,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:50:13,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:50:13,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:50:13,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:50:13,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 388 out of 913 [2023-08-30 10:50:13,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 388.6666666666667) internal successors, (1166), 3 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:13,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:50:13,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 388 of 913 [2023-08-30 10:50:13,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:50:17,468 INFO L130 PetriNetUnfolder]: 25859/35997 cut-off events. [2023-08-30 10:50:17,469 INFO L131 PetriNetUnfolder]: For 1280/1280 co-relation queries the response was YES. [2023-08-30 10:50:17,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73173 conditions, 35997 events. 25859/35997 cut-off events. For 1280/1280 co-relation queries the response was YES. Maximal size of possible extension queue 1474. Compared 213617 event pairs, 22226 based on Foata normal form. 0/14469 useless extension candidates. Maximal degree in co-relation 34416. Up to 18003 conditions per place. [2023-08-30 10:50:17,713 INFO L137 encePairwiseOnDemand]: 895/913 looper letters, 115 selfloop transitions, 6 changer transitions 0/121 dead transitions. [2023-08-30 10:50:17,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 121 transitions, 514 flow [2023-08-30 10:50:17,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:50:17,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:50:17,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1303 transitions. [2023-08-30 10:50:17,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47572106608251186 [2023-08-30 10:50:17,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1303 transitions. [2023-08-30 10:50:17,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1303 transitions. [2023-08-30 10:50:17,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:50:17,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1303 transitions. [2023-08-30 10:50:17,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 434.3333333333333) internal successors, (1303), 3 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:17,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 913.0) internal successors, (3652), 4 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:17,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 913.0) internal successors, (3652), 4 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:17,775 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 155 flow. Second operand 3 states and 1303 transitions. [2023-08-30 10:50:17,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 121 transitions, 514 flow [2023-08-30 10:50:17,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 121 transitions, 496 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 10:50:17,797 INFO L231 Difference]: Finished difference. Result has 65 places, 69 transitions, 190 flow [2023-08-30 10:50:17,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=913, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=65, PETRI_TRANSITIONS=69} [2023-08-30 10:50:17,802 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2023-08-30 10:50:17,802 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 69 transitions, 190 flow [2023-08-30 10:50:17,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 388.6666666666667) internal successors, (1166), 3 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:17,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:50:17,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:50:17,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:50:17,804 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 10:50:17,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:50:17,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1712135, now seen corresponding path program 1 times [2023-08-30 10:50:17,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:50:17,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111498833] [2023-08-30 10:50:17,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:50:17,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:50:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:50:17,934 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 10:50:17,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:50:17,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111498833] [2023-08-30 10:50:17,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111498833] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:50:17,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406856969] [2023-08-30 10:50:17,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:50:17,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:50:17,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:50:17,939 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 10:50:17,943 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 10:50:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:50:18,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:50:18,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:50:18,061 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 10:50:18,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:50:18,075 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 10:50:18,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406856969] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:50:18,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:50:18,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 10:50:18,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710414393] [2023-08-30 10:50:18,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:50:18,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:50:18,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:50:18,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:50:18,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:50:18,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 388 out of 913 [2023-08-30 10:50:18,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 69 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 389.14285714285717) internal successors, (2724), 7 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:18,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:50:18,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 388 of 913 [2023-08-30 10:50:18,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:50:24,873 INFO L130 PetriNetUnfolder]: 64655/89991 cut-off events. [2023-08-30 10:50:24,873 INFO L131 PetriNetUnfolder]: For 725/725 co-relation queries the response was YES. [2023-08-30 10:50:24,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182074 conditions, 89991 events. 64655/89991 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 3344. Compared 593587 event pairs, 55565 based on Foata normal form. 0/36186 useless extension candidates. Maximal degree in co-relation 145575. Up to 18001 conditions per place. [2023-08-30 10:50:25,313 INFO L137 encePairwiseOnDemand]: 901/913 looper letters, 268 selfloop transitions, 33 changer transitions 0/301 dead transitions. [2023-08-30 10:50:25,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 301 transitions, 1340 flow [2023-08-30 10:50:25,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:50:25,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:50:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3026 transitions. [2023-08-30 10:50:25,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734783289000156 [2023-08-30 10:50:25,322 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3026 transitions. [2023-08-30 10:50:25,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3026 transitions. [2023-08-30 10:50:25,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:50:25,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3026 transitions. [2023-08-30 10:50:25,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 432.2857142857143) internal successors, (3026), 7 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:25,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 913.0) internal successors, (7304), 8 states have internal predecessors, (7304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:25,345 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 913.0) internal successors, (7304), 8 states have internal predecessors, (7304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:25,346 INFO L175 Difference]: Start difference. First operand has 65 places, 69 transitions, 190 flow. Second operand 7 states and 3026 transitions. [2023-08-30 10:50:25,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 301 transitions, 1340 flow [2023-08-30 10:50:25,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 301 transitions, 1316 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:50:25,354 INFO L231 Difference]: Finished difference. Result has 72 places, 93 transitions, 397 flow [2023-08-30 10:50:25,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=913, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=397, PETRI_PLACES=72, PETRI_TRANSITIONS=93} [2023-08-30 10:50:25,355 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-08-30 10:50:25,355 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 93 transitions, 397 flow [2023-08-30 10:50:25,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 389.14285714285717) internal successors, (2724), 7 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:25,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:50:25,357 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 10:50:25,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 10:50:25,563 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 10:50:25,564 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 10:50:25,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:50:25,565 INFO L85 PathProgramCache]: Analyzing trace with hash 53078545, now seen corresponding path program 1 times [2023-08-30 10:50:25,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:50:25,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839407101] [2023-08-30 10:50:25,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:50:25,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:50:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:50:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:50:25,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:50:25,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839407101] [2023-08-30 10:50:25,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839407101] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:50:25,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:50:25,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:50:25,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887844464] [2023-08-30 10:50:25,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:50:25,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:50:25,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:50:25,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:50:25,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:50:25,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 388 out of 913 [2023-08-30 10:50:25,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 93 transitions, 397 flow. Second operand has 3 states, 3 states have (on average 389.3333333333333) internal successors, (1168), 3 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:25,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:50:25,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 388 of 913 [2023-08-30 10:50:25,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:50:31,893 INFO L130 PetriNetUnfolder]: 64646/89979 cut-off events. [2023-08-30 10:50:31,893 INFO L131 PetriNetUnfolder]: For 730/730 co-relation queries the response was YES. [2023-08-30 10:50:32,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182077 conditions, 89979 events. 64646/89979 cut-off events. For 730/730 co-relation queries the response was YES. Maximal size of possible extension queue 3456. Compared 597301 event pairs, 55565 based on Foata normal form. 2/36187 useless extension candidates. Maximal degree in co-relation 109218. Up to 89979 conditions per place. [2023-08-30 10:50:32,292 INFO L137 encePairwiseOnDemand]: 909/913 looper letters, 80 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2023-08-30 10:50:32,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 81 transitions, 478 flow [2023-08-30 10:50:32,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:50:32,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:50:32,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1228 transitions. [2023-08-30 10:50:32,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483388097845929 [2023-08-30 10:50:32,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1228 transitions. [2023-08-30 10:50:32,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1228 transitions. [2023-08-30 10:50:32,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:50:32,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1228 transitions. [2023-08-30 10:50:32,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:32,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 913.0) internal successors, (3652), 4 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:32,308 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 913.0) internal successors, (3652), 4 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:32,308 INFO L175 Difference]: Start difference. First operand has 72 places, 93 transitions, 397 flow. Second operand 3 states and 1228 transitions. [2023-08-30 10:50:32,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 81 transitions, 478 flow [2023-08-30 10:50:32,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 81 transitions, 448 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 10:50:32,312 INFO L231 Difference]: Finished difference. Result has 69 places, 81 transitions, 288 flow [2023-08-30 10:50:32,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=913, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=69, PETRI_TRANSITIONS=81} [2023-08-30 10:50:32,313 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-08-30 10:50:32,313 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 81 transitions, 288 flow [2023-08-30 10:50:32,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 389.3333333333333) internal successors, (1168), 3 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:32,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:50:32,314 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 10:50:32,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 10:50:32,315 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 10:50:32,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:50:32,315 INFO L85 PathProgramCache]: Analyzing trace with hash -531049294, now seen corresponding path program 2 times [2023-08-30 10:50:32,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:50:32,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058998537] [2023-08-30 10:50:32,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:50:32,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:50:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:50:32,463 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 10:50:32,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:50:32,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058998537] [2023-08-30 10:50:32,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058998537] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:50:32,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117052790] [2023-08-30 10:50:32,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:50:32,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:50:32,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:50:32,470 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 10:50:32,473 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 10:50:32,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:50:32,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:50:32,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:50:32,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:50:32,594 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 10:50:32,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:50:32,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117052790] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:50:32,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:50:32,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 10:50:32,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391362006] [2023-08-30 10:50:32,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:50:32,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:50:32,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:50:32,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:50:32,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:50:32,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 913 [2023-08-30 10:50:32,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 81 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:32,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:50:32,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 913 [2023-08-30 10:50:32,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:50:38,628 INFO L130 PetriNetUnfolder]: 64646/89978 cut-off events. [2023-08-30 10:50:38,629 INFO L131 PetriNetUnfolder]: For 734/734 co-relation queries the response was YES. [2023-08-30 10:50:38,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182055 conditions, 89978 events. 64646/89978 cut-off events. For 734/734 co-relation queries the response was YES. Maximal size of possible extension queue 3463. Compared 596643 event pairs, 55565 based on Foata normal form. 1/36187 useless extension candidates. Maximal degree in co-relation 182043. Up to 89973 conditions per place. [2023-08-30 10:50:39,082 INFO L137 encePairwiseOnDemand]: 910/913 looper letters, 74 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2023-08-30 10:50:39,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 438 flow [2023-08-30 10:50:39,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:50:39,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:50:39,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1234 transitions. [2023-08-30 10:50:39,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505293902884264 [2023-08-30 10:50:39,087 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1234 transitions. [2023-08-30 10:50:39,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1234 transitions. [2023-08-30 10:50:39,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:50:39,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1234 transitions. [2023-08-30 10:50:39,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 411.3333333333333) internal successors, (1234), 3 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:39,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 913.0) internal successors, (3652), 4 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:39,097 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 913.0) internal successors, (3652), 4 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:39,098 INFO L175 Difference]: Start difference. First operand has 69 places, 81 transitions, 288 flow. Second operand 3 states and 1234 transitions. [2023-08-30 10:50:39,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 438 flow [2023-08-30 10:50:39,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 80 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:50:39,101 INFO L231 Difference]: Finished difference. Result has 69 places, 80 transitions, 289 flow [2023-08-30 10:50:39,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=913, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=69, PETRI_TRANSITIONS=80} [2023-08-30 10:50:39,102 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-08-30 10:50:39,102 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 80 transitions, 289 flow [2023-08-30 10:50:39,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:39,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:50:39,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 10:50:39,109 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 10:50:39,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 10:50:39,309 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 10:50:39,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:50:39,309 INFO L85 PathProgramCache]: Analyzing trace with hash -466995559, now seen corresponding path program 1 times [2023-08-30 10:50:39,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:50:39,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181965042] [2023-08-30 10:50:39,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:50:39,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:50:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:50:39,448 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 10:50:39,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:50:39,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181965042] [2023-08-30 10:50:39,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181965042] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:50:39,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:50:39,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:50:39,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070706710] [2023-08-30 10:50:39,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:50:39,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:50:39,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:50:39,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:50:39,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:50:39,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 913 [2023-08-30 10:50:39,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 80 transitions, 289 flow. Second operand has 5 states, 5 states have (on average 380.2) internal successors, (1901), 5 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:39,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:50:39,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 913 [2023-08-30 10:50:39,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:50:52,787 INFO L130 PetriNetUnfolder]: 134531/186536 cut-off events. [2023-08-30 10:50:52,788 INFO L131 PetriNetUnfolder]: For 1610/1610 co-relation queries the response was YES. [2023-08-30 10:50:53,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377338 conditions, 186536 events. 134531/186536 cut-off events. For 1610/1610 co-relation queries the response was YES. Maximal size of possible extension queue 6869. Compared 1332562 event pairs, 112931 based on Foata normal form. 0/75636 useless extension candidates. Maximal degree in co-relation 377325. Up to 85701 conditions per place. [2023-08-30 10:50:53,815 INFO L137 encePairwiseOnDemand]: 905/913 looper letters, 189 selfloop transitions, 11 changer transitions 0/200 dead transitions. [2023-08-30 10:50:53,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 200 transitions, 1016 flow [2023-08-30 10:50:53,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:50:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:50:53,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2827 transitions. [2023-08-30 10:50:53,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423407917383821 [2023-08-30 10:50:53,822 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2827 transitions. [2023-08-30 10:50:53,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2827 transitions. [2023-08-30 10:50:53,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:50:53,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2827 transitions. [2023-08-30 10:50:53,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 403.85714285714283) internal successors, (2827), 7 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:53,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 913.0) internal successors, (7304), 8 states have internal predecessors, (7304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:53,839 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 913.0) internal successors, (7304), 8 states have internal predecessors, (7304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:53,839 INFO L175 Difference]: Start difference. First operand has 69 places, 80 transitions, 289 flow. Second operand 7 states and 2827 transitions. [2023-08-30 10:50:53,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 200 transitions, 1016 flow [2023-08-30 10:50:53,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 200 transitions, 1004 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:50:53,843 INFO L231 Difference]: Finished difference. Result has 78 places, 88 transitions, 379 flow [2023-08-30 10:50:53,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=913, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=379, PETRI_PLACES=78, PETRI_TRANSITIONS=88} [2023-08-30 10:50:53,844 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 6 predicate places. [2023-08-30 10:50:53,844 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 88 transitions, 379 flow [2023-08-30 10:50:53,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 380.2) internal successors, (1901), 5 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:53,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:50:53,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 10:50:53,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 10:50:53,846 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 10:50:53,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:50:53,846 INFO L85 PathProgramCache]: Analyzing trace with hash -466995632, now seen corresponding path program 1 times [2023-08-30 10:50:53,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:50:53,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575639399] [2023-08-30 10:50:53,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:50:53,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:50:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:50:53,931 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 10:50:53,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:50:53,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575639399] [2023-08-30 10:50:53,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575639399] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:50:53,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:50:53,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:50:53,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898353949] [2023-08-30 10:50:53,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:50:53,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:50:53,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:50:53,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:50:53,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:50:54,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 913 [2023-08-30 10:50:54,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 88 transitions, 379 flow. Second operand has 5 states, 5 states have (on average 380.2) internal successors, (1901), 5 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:50:54,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:50:54,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 913 [2023-08-30 10:50:54,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:17,622 INFO L130 PetriNetUnfolder]: 236376/327537 cut-off events. [2023-08-30 10:51:17,622 INFO L131 PetriNetUnfolder]: For 26543/26543 co-relation queries the response was YES. [2023-08-30 10:51:18,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674333 conditions, 327537 events. 236376/327537 cut-off events. For 26543/26543 co-relation queries the response was YES. Maximal size of possible extension queue 11609. Compared 2472675 event pairs, 198980 based on Foata normal form. 3380/144036 useless extension candidates. Maximal degree in co-relation 674315. Up to 163778 conditions per place. [2023-08-30 10:51:19,363 INFO L137 encePairwiseOnDemand]: 907/913 looper letters, 134 selfloop transitions, 11 changer transitions 0/145 dead transitions. [2023-08-30 10:51:19,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 145 transitions, 822 flow [2023-08-30 10:51:19,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:51:19,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:51:19,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2011 transitions. [2023-08-30 10:51:19,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44052573932092004 [2023-08-30 10:51:19,369 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2011 transitions. [2023-08-30 10:51:19,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2011 transitions. [2023-08-30 10:51:19,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:19,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2011 transitions. [2023-08-30 10:51:19,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 402.2) internal successors, (2011), 5 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:19,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 913.0) internal successors, (5478), 6 states have internal predecessors, (5478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:19,381 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 913.0) internal successors, (5478), 6 states have internal predecessors, (5478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:19,381 INFO L175 Difference]: Start difference. First operand has 78 places, 88 transitions, 379 flow. Second operand 5 states and 2011 transitions. [2023-08-30 10:51:19,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 145 transitions, 822 flow [2023-08-30 10:51:19,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 145 transitions, 814 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-30 10:51:19,405 INFO L231 Difference]: Finished difference. Result has 84 places, 89 transitions, 417 flow [2023-08-30 10:51:19,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=913, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=417, PETRI_PLACES=84, PETRI_TRANSITIONS=89} [2023-08-30 10:51:19,406 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 12 predicate places. [2023-08-30 10:51:19,406 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 89 transitions, 417 flow [2023-08-30 10:51:19,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 380.2) internal successors, (1901), 5 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:19,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:19,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:51:19,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 10:51:19,407 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 10:51:19,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:19,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1646210741, now seen corresponding path program 1 times [2023-08-30 10:51:19,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:19,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722080080] [2023-08-30 10:51:19,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:19,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:19,553 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 10:51:19,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:19,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722080080] [2023-08-30 10:51:19,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722080080] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:51:19,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763991582] [2023-08-30 10:51:19,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:19,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:19,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:51:19,556 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 10:51:19,561 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 10:51:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:19,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 10:51:19,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:51:19,698 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 10:51:19,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:51:19,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763991582] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:51:19,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:51:19,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-30 10:51:19,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505176545] [2023-08-30 10:51:19,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:51:19,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:51:19,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:19,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:51:19,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:51:19,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 913 [2023-08-30 10:51:19,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 89 transitions, 417 flow. Second operand has 3 states, 3 states have (on average 396.3333333333333) internal successors, (1189), 3 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:19,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:19,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 913 [2023-08-30 10:51:19,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:51:41,600 INFO L130 PetriNetUnfolder]: 210886/292897 cut-off events. [2023-08-30 10:51:41,600 INFO L131 PetriNetUnfolder]: For 41356/41356 co-relation queries the response was YES. [2023-08-30 10:51:42,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603942 conditions, 292897 events. 210886/292897 cut-off events. For 41356/41356 co-relation queries the response was YES. Maximal size of possible extension queue 10464. Compared 2195964 event pairs, 177880 based on Foata normal form. 3100/128817 useless extension candidates. Maximal degree in co-relation 603920. Up to 292897 conditions per place. [2023-08-30 10:51:43,207 INFO L137 encePairwiseOnDemand]: 910/913 looper letters, 85 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2023-08-30 10:51:43,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 86 transitions, 573 flow [2023-08-30 10:51:43,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:51:43,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:51:43,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1242 transitions. [2023-08-30 10:51:43,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4534501642935378 [2023-08-30 10:51:43,213 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1242 transitions. [2023-08-30 10:51:43,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1242 transitions. [2023-08-30 10:51:43,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:51:43,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1242 transitions. [2023-08-30 10:51:43,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:43,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 913.0) internal successors, (3652), 4 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:43,220 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 913.0) internal successors, (3652), 4 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:43,220 INFO L175 Difference]: Start difference. First operand has 84 places, 89 transitions, 417 flow. Second operand 3 states and 1242 transitions. [2023-08-30 10:51:43,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 86 transitions, 573 flow [2023-08-30 10:51:43,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 86 transitions, 561 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 10:51:43,234 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 391 flow [2023-08-30 10:51:43,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=913, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=391, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2023-08-30 10:51:43,235 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 8 predicate places. [2023-08-30 10:51:43,235 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 391 flow [2023-08-30 10:51:43,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 396.3333333333333) internal successors, (1189), 3 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:43,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:51:43,236 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 10:51:43,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 10:51:43,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:43,440 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-08-30 10:51:43,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:51:43,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1648019062, now seen corresponding path program 1 times [2023-08-30 10:51:43,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:51:43,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216130150] [2023-08-30 10:51:43,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:43,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:51:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:43,537 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 10:51:43,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:51:43,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216130150] [2023-08-30 10:51:43,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216130150] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:51:43,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274533926] [2023-08-30 10:51:43,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:51:43,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:51:43,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:51:43,545 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 10:51:43,549 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 10:51:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:51:43,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 10:51:43,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:51:43,660 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 10:51:43,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:51:43,707 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 10:51:43,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274533926] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:51:43,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:51:43,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 10:51:43,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616122690] [2023-08-30 10:51:43,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:51:43,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:51:43,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:51:43,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:51:43,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:51:43,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 388 out of 913 [2023-08-30 10:51:43,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 391 flow. Second operand has 13 states, 13 states have (on average 389.15384615384613) internal successors, (5059), 13 states have internal predecessors, (5059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:51:43,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:51:43,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 388 of 913 [2023-08-30 10:51:43,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand