./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/stack_longer-2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/pthread/stack_longer-2.i -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 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 04:46:17,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 04:46:18,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 04:46:18,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 04:46:18,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 04:46:18,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 04:46:18,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 04:46:18,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 04:46:18,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 04:46:18,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 04:46:18,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 04:46:18,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 04:46:18,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 04:46:18,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 04:46:18,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 04:46:18,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 04:46:18,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 04:46:18,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 04:46:18,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 04:46:18,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 04:46:18,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 04:46:18,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 04:46:18,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 04:46:18,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 04:46:18,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 04:46:18,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 04:46:18,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 04:46:18,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 04:46:18,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 04:46:18,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 04:46:18,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 04:46:18,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 04:46:18,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 04:46:18,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 04:46:18,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 04:46:18,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 04:46:18,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 04:46:18,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 04:46:18,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 04:46:18,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 04:46:18,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 04:46:18,098 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 04:46:18,132 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 04:46:18,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 04:46:18,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 04:46:18,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 04:46:18,134 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 04:46:18,134 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 04:46:18,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 04:46:18,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 04:46:18,136 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 04:46:18,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 04:46:18,137 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 04:46:18,137 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 04:46:18,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 04:46:18,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 04:46:18,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 04:46:18,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 04:46:18,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 04:46:18,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 04:46:18,138 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 04:46:18,138 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 04:46:18,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 04:46:18,139 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 04:46:18,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 04:46:18,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 04:46:18,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 04:46:18,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 04:46:18,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:46:18,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 04:46:18,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 04:46:18,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 04:46:18,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 04:46:18,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 04:46:18,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 04:46:18,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 04:46:18,141 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 04:46:18,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 04:46:18,142 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 04:46:18,142 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 04:46:18,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 04:46:18,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 04:46:18,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 04:46:18,497 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 04:46:18,498 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 04:46:18,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longer-2.i [2023-09-01 04:46:19,846 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 04:46:20,154 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 04:46:20,156 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i [2023-09-01 04:46:20,179 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09f97b538/21d6aa839ce545e688c5e234078aaaf5/FLAG802b91b61 [2023-09-01 04:46:20,195 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09f97b538/21d6aa839ce545e688c5e234078aaaf5 [2023-09-01 04:46:20,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 04:46:20,198 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 04:46:20,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 04:46:20,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 04:46:20,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 04:46:20,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:46:20" (1/1) ... [2023-09-01 04:46:20,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd96b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:46:20, skipping insertion in model container [2023-09-01 04:46:20,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:46:20" (1/1) ... [2023-09-01 04:46:20,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 04:46:20,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 04:46:20,588 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i[41529,41542] [2023-09-01 04:46:20,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:46:20,623 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 04:46:20,651 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i[41529,41542] [2023-09-01 04:46:20,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:46:20,722 INFO L208 MainTranslator]: Completed translation [2023-09-01 04:46:20,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:46:20 WrapperNode [2023-09-01 04:46:20,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 04:46:20,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 04:46:20,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 04:46:20,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 04:46:20,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:46:20" (1/1) ... [2023-09-01 04:46:20,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:46:20" (1/1) ... [2023-09-01 04:46:20,766 INFO L138 Inliner]: procedures = 277, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 157 [2023-09-01 04:46:20,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 04:46:20,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 04:46:20,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 04:46:20,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 04:46:20,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:46:20" (1/1) ... [2023-09-01 04:46:20,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:46:20" (1/1) ... [2023-09-01 04:46:20,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:46:20" (1/1) ... [2023-09-01 04:46:20,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:46:20" (1/1) ... [2023-09-01 04:46:20,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:46:20" (1/1) ... [2023-09-01 04:46:20,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:46:20" (1/1) ... [2023-09-01 04:46:20,823 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:46:20" (1/1) ... [2023-09-01 04:46:20,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:46:20" (1/1) ... [2023-09-01 04:46:20,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 04:46:20,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 04:46:20,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 04:46:20,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 04:46:20,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:46:20" (1/1) ... [2023-09-01 04:46:20,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:46:20,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:46:20,874 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) [2023-09-01 04:46:20,909 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 [2023-09-01 04:46:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-09-01 04:46:20,923 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-09-01 04:46:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-09-01 04:46:20,925 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-09-01 04:46:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 04:46:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 04:46:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 04:46:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 04:46:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 04:46:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 04:46:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 04:46:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 04:46:20,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 04:46:20,928 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 04:46:21,081 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 04:46:21,091 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 04:46:21,310 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 04:46:21,317 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 04:46:21,317 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 04:46:21,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:46:21 BoogieIcfgContainer [2023-09-01 04:46:21,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 04:46:21,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 04:46:21,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 04:46:21,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 04:46:21,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 04:46:20" (1/3) ... [2023-09-01 04:46:21,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f8e0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:46:21, skipping insertion in model container [2023-09-01 04:46:21,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:46:20" (2/3) ... [2023-09-01 04:46:21,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f8e0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:46:21, skipping insertion in model container [2023-09-01 04:46:21,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:46:21" (3/3) ... [2023-09-01 04:46:21,327 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2023-09-01 04:46:21,333 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 04:46:21,344 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 04:46:21,345 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 04:46:21,345 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 04:46:21,489 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 04:46:21,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 165 transitions, 346 flow [2023-09-01 04:46:21,620 INFO L130 PetriNetUnfolder]: 10/163 cut-off events. [2023-09-01 04:46:21,624 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 04:46:21,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 163 events. 10/163 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 416 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 125. Up to 3 conditions per place. [2023-09-01 04:46:21,632 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 165 transitions, 346 flow [2023-09-01 04:46:21,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 154 transitions, 317 flow [2023-09-01 04:46:21,645 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:46:21,658 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 154 transitions, 317 flow [2023-09-01 04:46:21,661 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 154 transitions, 317 flow [2023-09-01 04:46:21,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 154 transitions, 317 flow [2023-09-01 04:46:21,688 INFO L130 PetriNetUnfolder]: 10/154 cut-off events. [2023-09-01 04:46:21,688 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 04:46:21,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 154 events. 10/154 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 352 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 125. Up to 3 conditions per place. [2023-09-01 04:46:21,694 INFO L119 LiptonReduction]: Number of co-enabled transitions 8200 [2023-09-01 04:46:25,153 INFO L134 LiptonReduction]: Checked pairs total: 12122 [2023-09-01 04:46:25,153 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-09-01 04:46:25,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 04:46:25,170 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;@501434bc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:46:25,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-09-01 04:46:25,176 INFO L130 PetriNetUnfolder]: 1/19 cut-off events. [2023-09-01 04:46:25,176 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 04:46:25,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:25,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:46:25,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:25,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:25,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1379937117, now seen corresponding path program 1 times [2023-09-01 04:46:25,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:25,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912128763] [2023-09-01 04:46:25,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:25,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:25,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:25,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912128763] [2023-09-01 04:46:25,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912128763] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:46:25,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:46:25,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:46:25,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924602132] [2023-09-01 04:46:25,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:46:25,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:46:25,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:25,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:46:25,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:46:25,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 306 [2023-09-01 04:46:25,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:25,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:25,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 306 [2023-09-01 04:46:25,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:25,838 INFO L130 PetriNetUnfolder]: 1105/1816 cut-off events. [2023-09-01 04:46:25,838 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-09-01 04:46:25,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3658 conditions, 1816 events. 1105/1816 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8343 event pairs, 432 based on Foata normal form. 30/1275 useless extension candidates. Maximal degree in co-relation 3420. Up to 1222 conditions per place. [2023-09-01 04:46:25,850 INFO L137 encePairwiseOnDemand]: 299/306 looper letters, 58 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2023-09-01 04:46:25,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 63 transitions, 263 flow [2023-09-01 04:46:25,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:46:25,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:46:25,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-09-01 04:46:25,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55119825708061 [2023-09-01 04:46:25,872 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-09-01 04:46:25,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-09-01 04:46:25,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:46:25,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-09-01 04:46:25,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:25,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:25,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:25,891 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 3 states and 506 transitions. [2023-09-01 04:46:25,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 63 transitions, 263 flow [2023-09-01 04:46:25,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 63 transitions, 255 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 04:46:25,898 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 105 flow [2023-09-01 04:46:25,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-09-01 04:46:25,903 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-09-01 04:46:25,904 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 105 flow [2023-09-01 04:46:25,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:25,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:25,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:46:25,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 04:46:25,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:25,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:25,906 INFO L85 PathProgramCache]: Analyzing trace with hash -595359307, now seen corresponding path program 1 times [2023-09-01 04:46:25,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:25,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735801692] [2023-09-01 04:46:25,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:25,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:25,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:25,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735801692] [2023-09-01 04:46:25,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735801692] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:46:25,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:46:25,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:46:25,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171527878] [2023-09-01 04:46:25,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:46:25,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:46:25,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:25,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:46:25,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:46:26,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 306 [2023-09-01 04:46:26,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:26,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:26,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 306 [2023-09-01 04:46:26,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:26,308 INFO L130 PetriNetUnfolder]: 1668/2831 cut-off events. [2023-09-01 04:46:26,308 INFO L131 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2023-09-01 04:46:26,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5930 conditions, 2831 events. 1668/2831 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14796 event pairs, 835 based on Foata normal form. 0/2211 useless extension candidates. Maximal degree in co-relation 5606. Up to 1755 conditions per place. [2023-09-01 04:46:26,325 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 68 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-09-01 04:46:26,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 72 transitions, 324 flow [2023-09-01 04:46:26,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:46:26,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:46:26,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2023-09-01 04:46:26,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5675381263616558 [2023-09-01 04:46:26,328 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 521 transitions. [2023-09-01 04:46:26,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 521 transitions. [2023-09-01 04:46:26,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:46:26,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 521 transitions. [2023-09-01 04:46:26,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:26,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:26,333 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:26,333 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 105 flow. Second operand 3 states and 521 transitions. [2023-09-01 04:46:26,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 72 transitions, 324 flow [2023-09-01 04:46:26,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 72 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:46:26,338 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 118 flow [2023-09-01 04:46:26,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2023-09-01 04:46:26,339 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-09-01 04:46:26,339 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 118 flow [2023-09-01 04:46:26,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:26,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:26,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:46:26,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 04:46:26,340 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:26,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:26,343 INFO L85 PathProgramCache]: Analyzing trace with hash 510376855, now seen corresponding path program 1 times [2023-09-01 04:46:26,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:26,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103777627] [2023-09-01 04:46:26,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:26,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:26,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:26,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:26,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103777627] [2023-09-01 04:46:26,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103777627] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:46:26,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:46:26,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:46:26,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314087050] [2023-09-01 04:46:26,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:46:26,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:46:26,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:26,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:46:26,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:46:26,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 306 [2023-09-01 04:46:26,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:26,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:26,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 306 [2023-09-01 04:46:26,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:26,778 INFO L130 PetriNetUnfolder]: 2077/3384 cut-off events. [2023-09-01 04:46:26,778 INFO L131 PetriNetUnfolder]: For 471/471 co-relation queries the response was YES. [2023-09-01 04:46:26,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7853 conditions, 3384 events. 2077/3384 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 18449 event pairs, 1125 based on Foata normal form. 0/2732 useless extension candidates. Maximal degree in co-relation 6986. Up to 2745 conditions per place. [2023-09-01 04:46:26,797 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 66 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-09-01 04:46:26,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 70 transitions, 332 flow [2023-09-01 04:46:26,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:46:26,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:46:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2023-09-01 04:46:26,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5642701525054467 [2023-09-01 04:46:26,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2023-09-01 04:46:26,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2023-09-01 04:46:26,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:46:26,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2023-09-01 04:46:26,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:26,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:26,804 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:26,804 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 118 flow. Second operand 3 states and 518 transitions. [2023-09-01 04:46:26,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 70 transitions, 332 flow [2023-09-01 04:46:26,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 70 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:46:26,807 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 132 flow [2023-09-01 04:46:26,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-09-01 04:46:26,809 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-09-01 04:46:26,809 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 132 flow [2023-09-01 04:46:26,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:26,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:26,810 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:46:26,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 04:46:26,810 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:26,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:26,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2141768095, now seen corresponding path program 1 times [2023-09-01 04:46:26,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:26,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046401149] [2023-09-01 04:46:26,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:26,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:26,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:26,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:26,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046401149] [2023-09-01 04:46:26,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046401149] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:46:26,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:46:26,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:46:26,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631532294] [2023-09-01 04:46:26,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:46:26,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:46:26,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:26,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:46:26,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:46:26,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 306 [2023-09-01 04:46:26,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:26,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:26,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 306 [2023-09-01 04:46:26,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:27,227 INFO L130 PetriNetUnfolder]: 1793/3144 cut-off events. [2023-09-01 04:46:27,229 INFO L131 PetriNetUnfolder]: For 532/532 co-relation queries the response was YES. [2023-09-01 04:46:27,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7202 conditions, 3144 events. 1793/3144 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 17827 event pairs, 95 based on Foata normal form. 0/2762 useless extension candidates. Maximal degree in co-relation 6840. Up to 2734 conditions per place. [2023-09-01 04:46:27,248 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 59 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-09-01 04:46:27,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 313 flow [2023-09-01 04:46:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:46:27,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:46:27,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-09-01 04:46:27,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55119825708061 [2023-09-01 04:46:27,251 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-09-01 04:46:27,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-09-01 04:46:27,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:46:27,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-09-01 04:46:27,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:27,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:27,260 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:27,260 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 132 flow. Second operand 3 states and 506 transitions. [2023-09-01 04:46:27,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 313 flow [2023-09-01 04:46:27,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:46:27,264 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 128 flow [2023-09-01 04:46:27,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-09-01 04:46:27,265 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-09-01 04:46:27,266 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 128 flow [2023-09-01 04:46:27,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:27,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:27,266 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:46:27,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 04:46:27,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:27,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:27,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2141768193, now seen corresponding path program 1 times [2023-09-01 04:46:27,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:27,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34859456] [2023-09-01 04:46:27,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:27,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:46:27,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:27,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34859456] [2023-09-01 04:46:27,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34859456] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:46:27,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:46:27,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:46:27,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514397479] [2023-09-01 04:46:27,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:46:27,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:46:27,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:27,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:46:27,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:46:27,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 306 [2023-09-01 04:46:27,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:27,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:27,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 306 [2023-09-01 04:46:27,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:27,584 INFO L130 PetriNetUnfolder]: 1680/2953 cut-off events. [2023-09-01 04:46:27,584 INFO L131 PetriNetUnfolder]: For 583/583 co-relation queries the response was YES. [2023-09-01 04:46:27,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6690 conditions, 2953 events. 1680/2953 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16501 event pairs, 305 based on Foata normal form. 0/2659 useless extension candidates. Maximal degree in co-relation 6342. Up to 2083 conditions per place. [2023-09-01 04:46:27,600 INFO L137 encePairwiseOnDemand]: 302/306 looper letters, 56 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2023-09-01 04:46:27,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 309 flow [2023-09-01 04:46:27,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:46:27,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:46:27,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-09-01 04:46:27,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5479302832244008 [2023-09-01 04:46:27,602 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-09-01 04:46:27,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-09-01 04:46:27,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:46:27,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-09-01 04:46:27,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:27,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:27,606 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:27,606 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 128 flow. Second operand 3 states and 503 transitions. [2023-09-01 04:46:27,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 309 flow [2023-09-01 04:46:27,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:46:27,608 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 139 flow [2023-09-01 04:46:27,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-09-01 04:46:27,609 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-09-01 04:46:27,609 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 139 flow [2023-09-01 04:46:27,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:27,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:27,610 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:46:27,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 04:46:27,610 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:27,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:27,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1231784516, now seen corresponding path program 1 times [2023-09-01 04:46:27,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:27,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826217000] [2023-09-01 04:46:27,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:27,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:27,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:27,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:27,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826217000] [2023-09-01 04:46:27,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826217000] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:46:27,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101313480] [2023-09-01 04:46:27,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:27,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:46:27,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:46:27,689 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) [2023-09-01 04:46:27,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 04:46:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:27,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:46:27,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:46:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:27,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:46:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:27,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101313480] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:46:27,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:46:27,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-09-01 04:46:27,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176022695] [2023-09-01 04:46:27,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:46:27,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:46:27,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:27,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:46:27,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:46:28,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-09-01 04:46:28,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 139 flow. Second operand has 10 states, 10 states have (on average 144.7) internal successors, (1447), 10 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:28,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:28,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-09-01 04:46:28,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:28,905 INFO L130 PetriNetUnfolder]: 4162/6891 cut-off events. [2023-09-01 04:46:28,905 INFO L131 PetriNetUnfolder]: For 3792/3792 co-relation queries the response was YES. [2023-09-01 04:46:28,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17356 conditions, 6891 events. 4162/6891 cut-off events. For 3792/3792 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 39087 event pairs, 673 based on Foata normal form. 146/6433 useless extension candidates. Maximal degree in co-relation 16768. Up to 2039 conditions per place. [2023-09-01 04:46:28,939 INFO L137 encePairwiseOnDemand]: 294/306 looper letters, 212 selfloop transitions, 40 changer transitions 2/255 dead transitions. [2023-09-01 04:46:28,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 255 transitions, 1399 flow [2023-09-01 04:46:28,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:46:28,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:46:28,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2217 transitions. [2023-09-01 04:46:28,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175070028011205 [2023-09-01 04:46:28,945 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2217 transitions. [2023-09-01 04:46:28,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2217 transitions. [2023-09-01 04:46:28,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:46:28,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2217 transitions. [2023-09-01 04:46:28,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 158.35714285714286) internal successors, (2217), 14 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:28,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 306.0) internal successors, (4590), 15 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:28,959 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 306.0) internal successors, (4590), 15 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:28,959 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 139 flow. Second operand 14 states and 2217 transitions. [2023-09-01 04:46:28,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 255 transitions, 1399 flow [2023-09-01 04:46:28,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 255 transitions, 1353 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:46:28,976 INFO L231 Difference]: Finished difference. Result has 68 places, 81 transitions, 446 flow [2023-09-01 04:46:28,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=446, PETRI_PLACES=68, PETRI_TRANSITIONS=81} [2023-09-01 04:46:28,977 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-09-01 04:46:28,977 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 81 transitions, 446 flow [2023-09-01 04:46:28,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 144.7) internal successors, (1447), 10 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:28,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:28,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:46:28,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 04:46:29,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-09-01 04:46:29,186 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:29,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:29,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1723074253, now seen corresponding path program 1 times [2023-09-01 04:46:29,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:29,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510898932] [2023-09-01 04:46:29,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:29,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:29,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:29,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:29,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510898932] [2023-09-01 04:46:29,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510898932] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:46:29,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:46:29,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 04:46:29,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981920801] [2023-09-01 04:46:29,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:46:29,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:46:29,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:29,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:46:29,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:46:29,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 306 [2023-09-01 04:46:29,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 81 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:29,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:29,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 306 [2023-09-01 04:46:29,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:29,625 INFO L130 PetriNetUnfolder]: 1910/3279 cut-off events. [2023-09-01 04:46:29,625 INFO L131 PetriNetUnfolder]: For 3410/3410 co-relation queries the response was YES. [2023-09-01 04:46:29,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10001 conditions, 3279 events. 1910/3279 cut-off events. For 3410/3410 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 17380 event pairs, 419 based on Foata normal form. 202/3241 useless extension candidates. Maximal degree in co-relation 9336. Up to 2259 conditions per place. [2023-09-01 04:46:29,643 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 66 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-09-01 04:46:29,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 524 flow [2023-09-01 04:46:29,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:46:29,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:46:29,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-09-01 04:46:29,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403050108932462 [2023-09-01 04:46:29,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-09-01 04:46:29,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-09-01 04:46:29,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:46:29,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-09-01 04:46:29,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:29,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:29,649 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:29,649 INFO L175 Difference]: Start difference. First operand has 68 places, 81 transitions, 446 flow. Second operand 3 states and 496 transitions. [2023-09-01 04:46:29,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 524 flow [2023-09-01 04:46:29,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 491 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-09-01 04:46:29,664 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 299 flow [2023-09-01 04:46:29,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-09-01 04:46:29,664 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2023-09-01 04:46:29,665 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 299 flow [2023-09-01 04:46:29,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:29,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:29,665 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:46:29,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 04:46:29,666 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:29,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:29,666 INFO L85 PathProgramCache]: Analyzing trace with hash -470870337, now seen corresponding path program 1 times [2023-09-01 04:46:29,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:29,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819222531] [2023-09-01 04:46:29,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:29,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:29,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:29,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:29,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819222531] [2023-09-01 04:46:29,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819222531] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:46:29,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547758077] [2023-09-01 04:46:29,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:29,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:46:29,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:46:29,751 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) [2023-09-01 04:46:29,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 04:46:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:29,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:46:29,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:46:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:29,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:46:29,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547758077] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:46:29,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:46:29,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-09-01 04:46:29,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187660158] [2023-09-01 04:46:29,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:46:29,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:46:29,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:29,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:46:29,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-09-01 04:46:29,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-09-01 04:46:29,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 299 flow. Second operand has 5 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:29,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:29,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-09-01 04:46:29,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:30,377 INFO L130 PetriNetUnfolder]: 1801/3184 cut-off events. [2023-09-01 04:46:30,377 INFO L131 PetriNetUnfolder]: For 3013/3013 co-relation queries the response was YES. [2023-09-01 04:46:30,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9512 conditions, 3184 events. 1801/3184 cut-off events. For 3013/3013 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 15734 event pairs, 527 based on Foata normal form. 250/3196 useless extension candidates. Maximal degree in co-relation 8882. Up to 1653 conditions per place. [2023-09-01 04:46:30,397 INFO L137 encePairwiseOnDemand]: 295/306 looper letters, 92 selfloop transitions, 16 changer transitions 0/109 dead transitions. [2023-09-01 04:46:30,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 109 transitions, 723 flow [2023-09-01 04:46:30,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 04:46:30,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 04:46:30,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 931 transitions. [2023-09-01 04:46:30,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070806100217865 [2023-09-01 04:46:30,401 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 931 transitions. [2023-09-01 04:46:30,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 931 transitions. [2023-09-01 04:46:30,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:46:30,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 931 transitions. [2023-09-01 04:46:30,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.16666666666666) internal successors, (931), 6 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:30,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:30,408 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:30,408 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 299 flow. Second operand 6 states and 931 transitions. [2023-09-01 04:46:30,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 109 transitions, 723 flow [2023-09-01 04:46:30,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 109 transitions, 711 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:46:30,416 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 403 flow [2023-09-01 04:46:30,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=403, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-09-01 04:46:30,418 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-09-01 04:46:30,419 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 403 flow [2023-09-01 04:46:30,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:30,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:30,420 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 04:46:30,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 04:46:30,626 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,SelfDestructingSolverStorable7 [2023-09-01 04:46:30,626 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:30,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:30,627 INFO L85 PathProgramCache]: Analyzing trace with hash -334382920, now seen corresponding path program 1 times [2023-09-01 04:46:30,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:30,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890933644] [2023-09-01 04:46:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:30,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:30,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:30,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890933644] [2023-09-01 04:46:30,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890933644] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:46:30,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:46:30,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:46:30,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322813214] [2023-09-01 04:46:30,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:46:30,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:46:30,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:30,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:46:30,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:46:30,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 306 [2023-09-01 04:46:30,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:30,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:30,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 306 [2023-09-01 04:46:30,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:31,011 INFO L130 PetriNetUnfolder]: 1584/2841 cut-off events. [2023-09-01 04:46:31,011 INFO L131 PetriNetUnfolder]: For 3626/3630 co-relation queries the response was YES. [2023-09-01 04:46:31,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8857 conditions, 2841 events. 1584/2841 cut-off events. For 3626/3630 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 14188 event pairs, 515 based on Foata normal form. 4/2725 useless extension candidates. Maximal degree in co-relation 8360. Up to 2771 conditions per place. [2023-09-01 04:46:31,025 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 66 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2023-09-01 04:46:31,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 72 transitions, 574 flow [2023-09-01 04:46:31,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:46:31,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:46:31,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2023-09-01 04:46:31,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5348583877995643 [2023-09-01 04:46:31,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2023-09-01 04:46:31,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2023-09-01 04:46:31,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:46:31,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2023-09-01 04:46:31,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:31,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:31,032 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:31,032 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 403 flow. Second operand 3 states and 491 transitions. [2023-09-01 04:46:31,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 72 transitions, 574 flow [2023-09-01 04:46:31,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 566 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 04:46:31,038 INFO L231 Difference]: Finished difference. Result has 64 places, 63 transitions, 393 flow [2023-09-01 04:46:31,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=64, PETRI_TRANSITIONS=63} [2023-09-01 04:46:31,040 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2023-09-01 04:46:31,040 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 63 transitions, 393 flow [2023-09-01 04:46:31,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:31,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:31,041 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 04:46:31,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 04:46:31,041 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:31,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:31,042 INFO L85 PathProgramCache]: Analyzing trace with hash -334382869, now seen corresponding path program 1 times [2023-09-01 04:46:31,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:31,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924521191] [2023-09-01 04:46:31,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:31,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:31,096 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:46:31,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:31,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924521191] [2023-09-01 04:46:31,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924521191] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:46:31,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:46:31,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:46:31,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416008163] [2023-09-01 04:46:31,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:46:31,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:46:31,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:31,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:46:31,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:46:31,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 306 [2023-09-01 04:46:31,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 393 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:31,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:31,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 306 [2023-09-01 04:46:31,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:31,358 INFO L130 PetriNetUnfolder]: 1421/2560 cut-off events. [2023-09-01 04:46:31,358 INFO L131 PetriNetUnfolder]: For 3186/3190 co-relation queries the response was YES. [2023-09-01 04:46:31,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7985 conditions, 2560 events. 1421/2560 cut-off events. For 3186/3190 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 12303 event pairs, 395 based on Foata normal form. 4/2558 useless extension candidates. Maximal degree in co-relation 4718. Up to 1498 conditions per place. [2023-09-01 04:46:31,372 INFO L137 encePairwiseOnDemand]: 302/306 looper letters, 74 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-09-01 04:46:31,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 83 transitions, 652 flow [2023-09-01 04:46:31,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:46:31,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:46:31,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-09-01 04:46:31,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403050108932462 [2023-09-01 04:46:31,375 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-09-01 04:46:31,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-09-01 04:46:31,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:46:31,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-09-01 04:46:31,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:31,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:31,379 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:31,380 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 393 flow. Second operand 3 states and 496 transitions. [2023-09-01 04:46:31,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 83 transitions, 652 flow [2023-09-01 04:46:31,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 83 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:46:31,390 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 405 flow [2023-09-01 04:46:31,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-09-01 04:46:31,392 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-09-01 04:46:31,392 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 405 flow [2023-09-01 04:46:31,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:31,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:31,394 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:46:31,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 04:46:31,394 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:31,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:31,395 INFO L85 PathProgramCache]: Analyzing trace with hash -591784532, now seen corresponding path program 1 times [2023-09-01 04:46:31,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:31,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144233115] [2023-09-01 04:46:31,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:31,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:31,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:31,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144233115] [2023-09-01 04:46:31,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144233115] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:46:31,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:46:31,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 04:46:31,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942119824] [2023-09-01 04:46:31,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:46:31,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:46:31,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:31,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:46:31,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:46:31,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 306 [2023-09-01 04:46:31,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:31,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:31,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 306 [2023-09-01 04:46:31,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:31,852 INFO L130 PetriNetUnfolder]: 1424/2553 cut-off events. [2023-09-01 04:46:31,853 INFO L131 PetriNetUnfolder]: For 4190/4190 co-relation queries the response was YES. [2023-09-01 04:46:31,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8363 conditions, 2553 events. 1424/2553 cut-off events. For 4190/4190 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 12080 event pairs, 1086 based on Foata normal form. 18/2565 useless extension candidates. Maximal degree in co-relation 7946. Up to 2415 conditions per place. [2023-09-01 04:46:31,864 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 58 selfloop transitions, 6 changer transitions 9/74 dead transitions. [2023-09-01 04:46:31,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 595 flow [2023-09-01 04:46:31,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 04:46:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 04:46:31,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2023-09-01 04:46:31,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089869281045751 [2023-09-01 04:46:31,867 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2023-09-01 04:46:31,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2023-09-01 04:46:31,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:46:31,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2023-09-01 04:46:31,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:31,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 306.0) internal successors, (1530), 5 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:31,872 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 306.0) internal successors, (1530), 5 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:31,872 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 405 flow. Second operand 4 states and 623 transitions. [2023-09-01 04:46:31,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 595 flow [2023-09-01 04:46:31,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 587 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:46:31,880 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 398 flow [2023-09-01 04:46:31,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=398, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-09-01 04:46:31,881 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-09-01 04:46:31,881 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 398 flow [2023-09-01 04:46:31,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:31,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:31,882 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:46:31,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 04:46:31,883 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:31,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:31,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1049374055, now seen corresponding path program 1 times [2023-09-01 04:46:31,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:31,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430156427] [2023-09-01 04:46:31,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:31,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:32,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:32,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:32,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430156427] [2023-09-01 04:46:32,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430156427] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:46:32,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695349492] [2023-09-01 04:46:32,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:32,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:46:32,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:46:32,033 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) [2023-09-01 04:46:32,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 04:46:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:32,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 04:46:32,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:46:32,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:32,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:46:32,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695349492] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:46:32,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:46:32,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-09-01 04:46:32,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740231808] [2023-09-01 04:46:32,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:46:32,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:46:32,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:32,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:46:32,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:46:32,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 306 [2023-09-01 04:46:32,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 398 flow. Second operand has 5 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:32,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:32,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 306 [2023-09-01 04:46:32,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:32,502 INFO L130 PetriNetUnfolder]: 1361/2424 cut-off events. [2023-09-01 04:46:32,502 INFO L131 PetriNetUnfolder]: For 4092/4092 co-relation queries the response was YES. [2023-09-01 04:46:32,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8175 conditions, 2424 events. 1361/2424 cut-off events. For 4092/4092 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 10945 event pairs, 405 based on Foata normal form. 22/2440 useless extension candidates. Maximal degree in co-relation 7743. Up to 1340 conditions per place. [2023-09-01 04:46:32,518 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 74 selfloop transitions, 19 changer transitions 0/94 dead transitions. [2023-09-01 04:46:32,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 784 flow [2023-09-01 04:46:32,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 04:46:32,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 04:46:32,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 914 transitions. [2023-09-01 04:46:32,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49782135076252726 [2023-09-01 04:46:32,522 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 914 transitions. [2023-09-01 04:46:32,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 914 transitions. [2023-09-01 04:46:32,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:46:32,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 914 transitions. [2023-09-01 04:46:32,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:32,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:32,528 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:32,528 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 398 flow. Second operand 6 states and 914 transitions. [2023-09-01 04:46:32,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 784 flow [2023-09-01 04:46:32,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 94 transitions, 770 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 04:46:32,538 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 540 flow [2023-09-01 04:46:32,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=540, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-09-01 04:46:32,539 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2023-09-01 04:46:32,539 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 540 flow [2023-09-01 04:46:32,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:32,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:32,540 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:46:32,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 04:46:32,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:46:32,747 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:32,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:32,748 INFO L85 PathProgramCache]: Analyzing trace with hash -733508628, now seen corresponding path program 1 times [2023-09-01 04:46:32,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:32,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287125625] [2023-09-01 04:46:32,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:32,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:32,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:32,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287125625] [2023-09-01 04:46:32,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287125625] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:46:32,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:46:32,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 04:46:32,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668342760] [2023-09-01 04:46:32,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:46:32,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:46:32,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:32,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:46:32,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:46:32,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-09-01 04:46:32,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 540 flow. Second operand has 5 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:32,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:32,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-09-01 04:46:32,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:33,187 INFO L130 PetriNetUnfolder]: 1410/2523 cut-off events. [2023-09-01 04:46:33,187 INFO L131 PetriNetUnfolder]: For 4800/4800 co-relation queries the response was YES. [2023-09-01 04:46:33,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8765 conditions, 2523 events. 1410/2523 cut-off events. For 4800/4800 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 11570 event pairs, 275 based on Foata normal form. 8/2525 useless extension candidates. Maximal degree in co-relation 8322. Up to 1338 conditions per place. [2023-09-01 04:46:33,201 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 87 selfloop transitions, 19 changer transitions 0/107 dead transitions. [2023-09-01 04:46:33,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 107 transitions, 940 flow [2023-09-01 04:46:33,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:46:33,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:46:33,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 771 transitions. [2023-09-01 04:46:33,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503921568627451 [2023-09-01 04:46:33,204 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 771 transitions. [2023-09-01 04:46:33,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 771 transitions. [2023-09-01 04:46:33,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:46:33,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 771 transitions. [2023-09-01 04:46:33,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.2) internal successors, (771), 5 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:33,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:33,210 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:33,210 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 540 flow. Second operand 5 states and 771 transitions. [2023-09-01 04:46:33,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 107 transitions, 940 flow [2023-09-01 04:46:33,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 107 transitions, 931 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 04:46:33,219 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 612 flow [2023-09-01 04:46:33,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=612, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2023-09-01 04:46:33,221 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2023-09-01 04:46:33,221 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 612 flow [2023-09-01 04:46:33,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:33,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:33,222 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-09-01 04:46:33,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 04:46:33,222 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:33,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:33,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1545815804, now seen corresponding path program 1 times [2023-09-01 04:46:33,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:33,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666568633] [2023-09-01 04:46:33,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:33,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:33,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:33,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666568633] [2023-09-01 04:46:33,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666568633] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:46:33,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327091070] [2023-09-01 04:46:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:33,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:46:33,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:46:33,421 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) [2023-09-01 04:46:33,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 04:46:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:33,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 04:46:33,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:46:33,621 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:33,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:46:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:33,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327091070] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:46:33,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:46:33,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-09-01 04:46:33,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954074150] [2023-09-01 04:46:33,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:46:33,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 04:46:33,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:33,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 04:46:33,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-09-01 04:46:33,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-09-01 04:46:33,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 612 flow. Second operand has 18 states, 18 states have (on average 145.05555555555554) internal successors, (2611), 18 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:33,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:33,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-09-01 04:46:33,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:34,710 INFO L130 PetriNetUnfolder]: 2450/4359 cut-off events. [2023-09-01 04:46:34,710 INFO L131 PetriNetUnfolder]: For 13104/13104 co-relation queries the response was YES. [2023-09-01 04:46:34,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15858 conditions, 4359 events. 2450/4359 cut-off events. For 13104/13104 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 19534 event pairs, 373 based on Foata normal form. 100/4459 useless extension candidates. Maximal degree in co-relation 15200. Up to 873 conditions per place. [2023-09-01 04:46:34,741 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 250 selfloop transitions, 62 changer transitions 0/313 dead transitions. [2023-09-01 04:46:34,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 313 transitions, 2626 flow [2023-09-01 04:46:34,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 04:46:34,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 04:46:34,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2934 transitions. [2023-09-01 04:46:34,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046439628482973 [2023-09-01 04:46:34,750 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2934 transitions. [2023-09-01 04:46:34,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2934 transitions. [2023-09-01 04:46:34,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:46:34,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2934 transitions. [2023-09-01 04:46:34,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.42105263157896) internal successors, (2934), 19 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:34,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 306.0) internal successors, (6120), 20 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:34,768 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 306.0) internal successors, (6120), 20 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:34,769 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 612 flow. Second operand 19 states and 2934 transitions. [2023-09-01 04:46:34,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 313 transitions, 2626 flow [2023-09-01 04:46:34,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 313 transitions, 2606 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 04:46:34,786 INFO L231 Difference]: Finished difference. Result has 93 places, 105 transitions, 1228 flow [2023-09-01 04:46:34,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1228, PETRI_PLACES=93, PETRI_TRANSITIONS=105} [2023-09-01 04:46:34,787 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 51 predicate places. [2023-09-01 04:46:34,788 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 105 transitions, 1228 flow [2023-09-01 04:46:34,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 145.05555555555554) internal successors, (2611), 18 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:34,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:34,795 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:46:34,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 04:46:35,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:46:35,001 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:35,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:35,002 INFO L85 PathProgramCache]: Analyzing trace with hash 921312875, now seen corresponding path program 2 times [2023-09-01 04:46:35,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:35,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124560887] [2023-09-01 04:46:35,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:35,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:35,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:35,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124560887] [2023-09-01 04:46:35,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124560887] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:46:35,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:46:35,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 04:46:35,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731914371] [2023-09-01 04:46:35,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:46:35,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 04:46:35,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:35,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 04:46:35,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 04:46:35,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-09-01 04:46:35,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 105 transitions, 1228 flow. Second operand has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:35,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:35,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-09-01 04:46:35,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:35,947 INFO L130 PetriNetUnfolder]: 2313/4164 cut-off events. [2023-09-01 04:46:35,947 INFO L131 PetriNetUnfolder]: For 14098/14098 co-relation queries the response was YES. [2023-09-01 04:46:35,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15657 conditions, 4164 events. 2313/4164 cut-off events. For 14098/14098 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18763 event pairs, 300 based on Foata normal form. 72/4236 useless extension candidates. Maximal degree in co-relation 14958. Up to 2986 conditions per place. [2023-09-01 04:46:35,981 INFO L137 encePairwiseOnDemand]: 294/306 looper letters, 70 selfloop transitions, 54 changer transitions 0/125 dead transitions. [2023-09-01 04:46:35,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 125 transitions, 1405 flow [2023-09-01 04:46:35,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 04:46:35,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 04:46:35,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1126 transitions. [2023-09-01 04:46:35,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599673202614379 [2023-09-01 04:46:35,985 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1126 transitions. [2023-09-01 04:46:35,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1126 transitions. [2023-09-01 04:46:35,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:46:35,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1126 transitions. [2023-09-01 04:46:35,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:35,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:35,992 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:35,992 INFO L175 Difference]: Start difference. First operand has 93 places, 105 transitions, 1228 flow. Second operand 8 states and 1126 transitions. [2023-09-01 04:46:35,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 125 transitions, 1405 flow [2023-09-01 04:46:36,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 125 transitions, 1231 flow, removed 60 selfloop flow, removed 9 redundant places. [2023-09-01 04:46:36,020 INFO L231 Difference]: Finished difference. Result has 90 places, 90 transitions, 937 flow [2023-09-01 04:46:36,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=937, PETRI_PLACES=90, PETRI_TRANSITIONS=90} [2023-09-01 04:46:36,021 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2023-09-01 04:46:36,021 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 90 transitions, 937 flow [2023-09-01 04:46:36,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:36,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:36,022 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:46:36,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 04:46:36,022 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:36,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:36,023 INFO L85 PathProgramCache]: Analyzing trace with hash 921312938, now seen corresponding path program 2 times [2023-09-01 04:46:36,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:36,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562488078] [2023-09-01 04:46:36,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:36,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 04:46:36,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:36,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562488078] [2023-09-01 04:46:36,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562488078] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:46:36,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120029734] [2023-09-01 04:46:36,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:46:36,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:46:36,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:46:36,242 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:46:36,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 04:46:36,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:46:36,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:46:36,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 04:46:36,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:46:36,439 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:46:36,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:46:36,515 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:46:36,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120029734] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:46:36,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:46:36,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 11 [2023-09-01 04:46:36,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302064735] [2023-09-01 04:46:36,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:46:36,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 04:46:36,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:36,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 04:46:36,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-09-01 04:46:36,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-09-01 04:46:36,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 90 transitions, 937 flow. Second operand has 13 states, 13 states have (on average 138.23076923076923) internal successors, (1797), 13 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:36,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:36,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-09-01 04:46:36,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:37,486 INFO L130 PetriNetUnfolder]: 2908/5229 cut-off events. [2023-09-01 04:46:37,486 INFO L131 PetriNetUnfolder]: For 15002/15002 co-relation queries the response was YES. [2023-09-01 04:46:37,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19101 conditions, 5229 events. 2908/5229 cut-off events. For 15002/15002 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 25037 event pairs, 441 based on Foata normal form. 38/5267 useless extension candidates. Maximal degree in co-relation 18365. Up to 2471 conditions per place. [2023-09-01 04:46:37,530 INFO L137 encePairwiseOnDemand]: 295/306 looper letters, 183 selfloop transitions, 46 changer transitions 0/230 dead transitions. [2023-09-01 04:46:37,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 230 transitions, 2187 flow [2023-09-01 04:46:37,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 04:46:37,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 04:46:37,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2149 transitions. [2023-09-01 04:46:37,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681917211328976 [2023-09-01 04:46:37,536 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2149 transitions. [2023-09-01 04:46:37,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2149 transitions. [2023-09-01 04:46:37,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:46:37,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2149 transitions. [2023-09-01 04:46:37,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 143.26666666666668) internal successors, (2149), 15 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:37,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:37,548 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:37,548 INFO L175 Difference]: Start difference. First operand has 90 places, 90 transitions, 937 flow. Second operand 15 states and 2149 transitions. [2023-09-01 04:46:37,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 230 transitions, 2187 flow [2023-09-01 04:46:37,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 230 transitions, 2127 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-09-01 04:46:37,591 INFO L231 Difference]: Finished difference. Result has 108 places, 112 transitions, 1342 flow [2023-09-01 04:46:37,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1342, PETRI_PLACES=108, PETRI_TRANSITIONS=112} [2023-09-01 04:46:37,592 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 66 predicate places. [2023-09-01 04:46:37,593 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 112 transitions, 1342 flow [2023-09-01 04:46:37,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 138.23076923076923) internal successors, (1797), 13 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:37,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:37,594 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:46:37,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 04:46:37,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 04:46:37,804 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:37,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:37,804 INFO L85 PathProgramCache]: Analyzing trace with hash 810645160, now seen corresponding path program 3 times [2023-09-01 04:46:37,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:37,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088136889] [2023-09-01 04:46:37,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:37,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:38,139 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 04:46:38,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:38,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088136889] [2023-09-01 04:46:38,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088136889] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:46:38,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571945592] [2023-09-01 04:46:38,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:46:38,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:46:38,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:46:38,141 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:46:38,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 04:46:38,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-09-01 04:46:38,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:46:38,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 04:46:38,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:46:38,444 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:46:38,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:46:38,597 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:46:38,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571945592] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:46:38,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:46:38,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2023-09-01 04:46:38,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873007365] [2023-09-01 04:46:38,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:46:38,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-09-01 04:46:38,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:38,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-09-01 04:46:38,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2023-09-01 04:46:38,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-09-01 04:46:38,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 112 transitions, 1342 flow. Second operand has 21 states, 21 states have (on average 137.76190476190476) internal successors, (2893), 21 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:38,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:38,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-09-01 04:46:38,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:40,019 INFO L130 PetriNetUnfolder]: 3558/6375 cut-off events. [2023-09-01 04:46:40,019 INFO L131 PetriNetUnfolder]: For 24520/24520 co-relation queries the response was YES. [2023-09-01 04:46:40,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24167 conditions, 6375 events. 3558/6375 cut-off events. For 24520/24520 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 32125 event pairs, 485 based on Foata normal form. 48/6423 useless extension candidates. Maximal degree in co-relation 23859. Up to 1321 conditions per place. [2023-09-01 04:46:40,050 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 269 selfloop transitions, 91 changer transitions 0/361 dead transitions. [2023-09-01 04:46:40,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 361 transitions, 3446 flow [2023-09-01 04:46:40,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-09-01 04:46:40,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-09-01 04:46:40,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3586 transitions. [2023-09-01 04:46:40,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875816993464053 [2023-09-01 04:46:40,066 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3586 transitions. [2023-09-01 04:46:40,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3586 transitions. [2023-09-01 04:46:40,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:46:40,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3586 transitions. [2023-09-01 04:46:40,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 143.44) internal successors, (3586), 25 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:40,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 306.0) internal successors, (7956), 26 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:40,091 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 306.0) internal successors, (7956), 26 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:40,092 INFO L175 Difference]: Start difference. First operand has 108 places, 112 transitions, 1342 flow. Second operand 25 states and 3586 transitions. [2023-09-01 04:46:40,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 361 transitions, 3446 flow [2023-09-01 04:46:40,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 361 transitions, 3362 flow, removed 40 selfloop flow, removed 2 redundant places. [2023-09-01 04:46:40,149 INFO L231 Difference]: Finished difference. Result has 138 places, 139 transitions, 1991 flow [2023-09-01 04:46:40,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1991, PETRI_PLACES=138, PETRI_TRANSITIONS=139} [2023-09-01 04:46:40,150 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 96 predicate places. [2023-09-01 04:46:40,150 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 139 transitions, 1991 flow [2023-09-01 04:46:40,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 137.76190476190476) internal successors, (2893), 21 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:40,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:40,151 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1] [2023-09-01 04:46:40,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 04:46:40,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 04:46:40,359 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:40,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:40,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1147695864, now seen corresponding path program 2 times [2023-09-01 04:46:40,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:40,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453027380] [2023-09-01 04:46:40,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:40,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:40,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:40,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453027380] [2023-09-01 04:46:40,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453027380] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:46:40,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67411647] [2023-09-01 04:46:40,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:46:40,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:46:40,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:46:40,775 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:46:40,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 04:46:40,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:46:40,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:46:40,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 04:46:40,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:46:41,073 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:41,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:46:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:46:41,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67411647] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:46:41,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:46:41,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-09-01 04:46:41,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614518410] [2023-09-01 04:46:41,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:46:41,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-09-01 04:46:41,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:41,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-09-01 04:46:41,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-09-01 04:46:41,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-09-01 04:46:41,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 139 transitions, 1991 flow. Second operand has 34 states, 34 states have (on average 145.02941176470588) internal successors, (4931), 34 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:41,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:41,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-09-01 04:46:41,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:44,064 INFO L130 PetriNetUnfolder]: 5858/10531 cut-off events. [2023-09-01 04:46:44,065 INFO L131 PetriNetUnfolder]: For 57270/57270 co-relation queries the response was YES. [2023-09-01 04:46:44,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41208 conditions, 10531 events. 5858/10531 cut-off events. For 57270/57270 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 51478 event pairs, 939 based on Foata normal form. 240/10771 useless extension candidates. Maximal degree in co-relation 40832. Up to 2778 conditions per place. [2023-09-01 04:46:44,115 INFO L137 encePairwiseOnDemand]: 299/306 looper letters, 496 selfloop transitions, 115 changer transitions 0/612 dead transitions. [2023-09-01 04:46:44,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 612 transitions, 6061 flow [2023-09-01 04:46:44,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-09-01 04:46:44,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-09-01 04:46:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5387 transitions. [2023-09-01 04:46:44,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029878618113912 [2023-09-01 04:46:44,124 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5387 transitions. [2023-09-01 04:46:44,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5387 transitions. [2023-09-01 04:46:44,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:46:44,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5387 transitions. [2023-09-01 04:46:44,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 153.9142857142857) internal successors, (5387), 35 states have internal predecessors, (5387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:44,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 306.0) internal successors, (11016), 36 states have internal predecessors, (11016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:44,148 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 306.0) internal successors, (11016), 36 states have internal predecessors, (11016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:44,148 INFO L175 Difference]: Start difference. First operand has 138 places, 139 transitions, 1991 flow. Second operand 35 states and 5387 transitions. [2023-09-01 04:46:44,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 612 transitions, 6061 flow [2023-09-01 04:46:44,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 612 transitions, 5944 flow, removed 40 selfloop flow, removed 8 redundant places. [2023-09-01 04:46:44,287 INFO L231 Difference]: Finished difference. Result has 172 places, 196 transitions, 3174 flow [2023-09-01 04:46:44,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1784, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3174, PETRI_PLACES=172, PETRI_TRANSITIONS=196} [2023-09-01 04:46:44,288 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2023-09-01 04:46:44,288 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 196 transitions, 3174 flow [2023-09-01 04:46:44,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 145.02941176470588) internal successors, (4931), 34 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:44,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:44,290 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:46:44,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-09-01 04:46:44,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:46:44,497 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:44,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:44,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1905252954, now seen corresponding path program 4 times [2023-09-01 04:46:44,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:44,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179787368] [2023-09-01 04:46:44,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:44,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:45,007 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:46:45,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:45,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179787368] [2023-09-01 04:46:45,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179787368] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:46:45,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528703914] [2023-09-01 04:46:45,008 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 04:46:45,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:46:45,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:46:45,009 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:46:45,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 04:46:45,202 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 04:46:45,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:46:45,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 04:46:45,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:46:45,315 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:46:45,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:46:45,547 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:46:45,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528703914] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:46:45,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:46:45,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 27 [2023-09-01 04:46:45,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522873458] [2023-09-01 04:46:45,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:46:45,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-09-01 04:46:45,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:45,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-09-01 04:46:45,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2023-09-01 04:46:45,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-09-01 04:46:45,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 196 transitions, 3174 flow. Second operand has 29 states, 29 states have (on average 137.55172413793105) internal successors, (3989), 29 states have internal predecessors, (3989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:45,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:45,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-09-01 04:46:45,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:48,673 INFO L130 PetriNetUnfolder]: 8021/14364 cut-off events. [2023-09-01 04:46:48,673 INFO L131 PetriNetUnfolder]: For 84336/84336 co-relation queries the response was YES. [2023-09-01 04:46:48,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57943 conditions, 14364 events. 8021/14364 cut-off events. For 84336/84336 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 76194 event pairs, 771 based on Foata normal form. 96/14460 useless extension candidates. Maximal degree in co-relation 56728. Up to 2988 conditions per place. [2023-09-01 04:46:48,759 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 405 selfloop transitions, 216 changer transitions 0/622 dead transitions. [2023-09-01 04:46:48,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 622 transitions, 7379 flow [2023-09-01 04:46:48,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-09-01 04:46:48,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-09-01 04:46:48,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 5565 transitions. [2023-09-01 04:46:48,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4663147310206134 [2023-09-01 04:46:48,768 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 5565 transitions. [2023-09-01 04:46:48,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 5565 transitions. [2023-09-01 04:46:48,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:46:48,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 5565 transitions. [2023-09-01 04:46:48,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 142.69230769230768) internal successors, (5565), 39 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:48,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 306.0) internal successors, (12240), 40 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:48,788 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 306.0) internal successors, (12240), 40 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:48,788 INFO L175 Difference]: Start difference. First operand has 172 places, 196 transitions, 3174 flow. Second operand 39 states and 5565 transitions. [2023-09-01 04:46:48,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 622 transitions, 7379 flow [2023-09-01 04:46:49,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 622 transitions, 6960 flow, removed 162 selfloop flow, removed 13 redundant places. [2023-09-01 04:46:49,008 INFO L231 Difference]: Finished difference. Result has 208 places, 288 transitions, 4970 flow [2023-09-01 04:46:49,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=2816, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=4970, PETRI_PLACES=208, PETRI_TRANSITIONS=288} [2023-09-01 04:46:49,008 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 166 predicate places. [2023-09-01 04:46:49,009 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 288 transitions, 4970 flow [2023-09-01 04:46:49,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 137.55172413793105) internal successors, (3989), 29 states have internal predecessors, (3989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:49,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:49,010 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:46:49,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 04:46:49,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:46:49,217 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:49,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:49,217 INFO L85 PathProgramCache]: Analyzing trace with hash 2029433002, now seen corresponding path program 1 times [2023-09-01 04:46:49,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:49,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14690003] [2023-09-01 04:46:49,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:49,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:49,866 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:46:49,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:49,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14690003] [2023-09-01 04:46:49,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14690003] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:46:49,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157454545] [2023-09-01 04:46:49,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:49,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:46:49,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:46:49,869 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:46:49,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 04:46:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:50,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 19 conjunts are in the unsatisfiable core [2023-09-01 04:46:50,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:46:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:46:50,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:46:50,377 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:46:50,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157454545] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:46:50,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:46:50,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 26 [2023-09-01 04:46:50,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257985320] [2023-09-01 04:46:50,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:46:50,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-09-01 04:46:50,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:50,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-09-01 04:46:50,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2023-09-01 04:46:50,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-09-01 04:46:50,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 288 transitions, 4970 flow. Second operand has 28 states, 28 states have (on average 137.85714285714286) internal successors, (3860), 28 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:50,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:50,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-09-01 04:46:50,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:46:55,002 INFO L130 PetriNetUnfolder]: 11730/21007 cut-off events. [2023-09-01 04:46:55,002 INFO L131 PetriNetUnfolder]: For 139704/139704 co-relation queries the response was YES. [2023-09-01 04:46:55,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86630 conditions, 21007 events. 11730/21007 cut-off events. For 139704/139704 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 124637 event pairs, 1301 based on Foata normal form. 166/21173 useless extension candidates. Maximal degree in co-relation 85090. Up to 4457 conditions per place. [2023-09-01 04:46:55,167 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 387 selfloop transitions, 384 changer transitions 0/772 dead transitions. [2023-09-01 04:46:55,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 772 transitions, 11415 flow [2023-09-01 04:46:55,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-09-01 04:46:55,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-09-01 04:46:55,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 4723 transitions. [2023-09-01 04:46:55,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46771637948108535 [2023-09-01 04:46:55,175 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 4723 transitions. [2023-09-01 04:46:55,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 4723 transitions. [2023-09-01 04:46:55,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:46:55,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 4723 transitions. [2023-09-01 04:46:55,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 143.12121212121212) internal successors, (4723), 33 states have internal predecessors, (4723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:55,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 306.0) internal successors, (10404), 34 states have internal predecessors, (10404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:55,192 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 306.0) internal successors, (10404), 34 states have internal predecessors, (10404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:55,192 INFO L175 Difference]: Start difference. First operand has 208 places, 288 transitions, 4970 flow. Second operand 33 states and 4723 transitions. [2023-09-01 04:46:55,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 772 transitions, 11415 flow [2023-09-01 04:46:55,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 772 transitions, 10697 flow, removed 273 selfloop flow, removed 13 redundant places. [2023-09-01 04:46:55,775 INFO L231 Difference]: Finished difference. Result has 237 places, 488 transitions, 9122 flow [2023-09-01 04:46:55,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4624, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=9122, PETRI_PLACES=237, PETRI_TRANSITIONS=488} [2023-09-01 04:46:55,776 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 195 predicate places. [2023-09-01 04:46:55,776 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 488 transitions, 9122 flow [2023-09-01 04:46:55,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 137.85714285714286) internal successors, (3860), 28 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:55,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:46:55,777 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:46:55,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 04:46:55,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:46:55,977 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:46:55,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:46:55,978 INFO L85 PathProgramCache]: Analyzing trace with hash 792853539, now seen corresponding path program 5 times [2023-09-01 04:46:55,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:46:55,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762849590] [2023-09-01 04:46:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:46:55,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:46:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:46:56,594 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 04:46:56,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:46:56,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762849590] [2023-09-01 04:46:56,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762849590] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:46:56,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519688032] [2023-09-01 04:46:56,595 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 04:46:56,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:46:56,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:46:56,597 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:46:56,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 04:46:57,022 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-09-01 04:46:57,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:46:57,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 04:46:57,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:46:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:46:57,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:46:57,546 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:46:57,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519688032] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:46:57,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:46:57,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 18] total 39 [2023-09-01 04:46:57,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697619170] [2023-09-01 04:46:57,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:46:57,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-09-01 04:46:57,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:46:57,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-09-01 04:46:57,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=1235, Unknown=0, NotChecked=0, Total=1640 [2023-09-01 04:46:57,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-09-01 04:46:57,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 488 transitions, 9122 flow. Second operand has 41 states, 41 states have (on average 137.390243902439) internal successors, (5633), 41 states have internal predecessors, (5633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:46:57,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:46:57,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-09-01 04:46:57,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:47:04,604 INFO L130 PetriNetUnfolder]: 15387/27478 cut-off events. [2023-09-01 04:47:04,604 INFO L131 PetriNetUnfolder]: For 211558/211558 co-relation queries the response was YES. [2023-09-01 04:47:04,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116852 conditions, 27478 events. 15387/27478 cut-off events. For 211558/211558 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 169509 event pairs, 2195 based on Foata normal form. 160/27638 useless extension candidates. Maximal degree in co-relation 115019. Up to 5830 conditions per place. [2023-09-01 04:47:05,064 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 669 selfloop transitions, 469 changer transitions 0/1139 dead transitions. [2023-09-01 04:47:05,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 1139 transitions, 16944 flow [2023-09-01 04:47:05,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-09-01 04:47:05,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-09-01 04:47:05,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7184 transitions. [2023-09-01 04:47:05,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46954248366013074 [2023-09-01 04:47:05,072 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7184 transitions. [2023-09-01 04:47:05,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7184 transitions. [2023-09-01 04:47:05,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:47:05,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7184 transitions. [2023-09-01 04:47:05,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 143.68) internal successors, (7184), 50 states have internal predecessors, (7184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:47:05,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 306.0) internal successors, (15606), 51 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:47:05,095 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 306.0) internal successors, (15606), 51 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:47:05,095 INFO L175 Difference]: Start difference. First operand has 237 places, 488 transitions, 9122 flow. Second operand 50 states and 7184 transitions. [2023-09-01 04:47:05,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 1139 transitions, 16944 flow [2023-09-01 04:47:06,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 1139 transitions, 16381 flow, removed 222 selfloop flow, removed 7 redundant places. [2023-09-01 04:47:06,444 INFO L231 Difference]: Finished difference. Result has 298 places, 628 transitions, 13384 flow [2023-09-01 04:47:06,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=8696, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=13384, PETRI_PLACES=298, PETRI_TRANSITIONS=628} [2023-09-01 04:47:06,445 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2023-09-01 04:47:06,445 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 628 transitions, 13384 flow [2023-09-01 04:47:06,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 137.390243902439) internal successors, (5633), 41 states have internal predecessors, (5633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:47:06,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:47:06,446 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:47:06,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 04:47:06,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-09-01 04:47:06,654 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:47:06,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:47:06,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1862134967, now seen corresponding path program 2 times [2023-09-01 04:47:06,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:47:06,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408304944] [2023-09-01 04:47:06,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:47:06,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:47:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:47:07,375 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:47:07,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:47:07,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408304944] [2023-09-01 04:47:07,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408304944] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:47:07,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206500842] [2023-09-01 04:47:07,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:47:07,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:47:07,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:47:07,377 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:47:07,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 04:47:07,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:47:07,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:47:07,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 04:47:07,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:47:07,765 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:47:07,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:47:08,129 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:47:08,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206500842] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:47:08,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:47:08,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 38 [2023-09-01 04:47:08,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494822380] [2023-09-01 04:47:08,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:47:08,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-09-01 04:47:08,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:47:08,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-09-01 04:47:08,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1210, Unknown=0, NotChecked=0, Total=1560 [2023-09-01 04:47:08,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-09-01 04:47:08,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 628 transitions, 13384 flow. Second operand has 40 states, 40 states have (on average 137.6) internal successors, (5504), 40 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:47:08,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:47:08,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-09-01 04:47:08,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:47:19,013 INFO L130 PetriNetUnfolder]: 19671/35170 cut-off events. [2023-09-01 04:47:19,013 INFO L131 PetriNetUnfolder]: For 319324/319324 co-relation queries the response was YES. [2023-09-01 04:47:19,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154708 conditions, 35170 events. 19671/35170 cut-off events. For 319324/319324 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 228920 event pairs, 2231 based on Foata normal form. 234/35404 useless extension candidates. Maximal degree in co-relation 152762. Up to 7561 conditions per place. [2023-09-01 04:47:19,487 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 512 selfloop transitions, 778 changer transitions 0/1291 dead transitions. [2023-09-01 04:47:19,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1291 transitions, 22541 flow [2023-09-01 04:47:19,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-09-01 04:47:19,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-09-01 04:47:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7149 transitions. [2023-09-01 04:47:19,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46725490196078434 [2023-09-01 04:47:19,495 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7149 transitions. [2023-09-01 04:47:19,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7149 transitions. [2023-09-01 04:47:19,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:47:19,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7149 transitions. [2023-09-01 04:47:19,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 142.98) internal successors, (7149), 50 states have internal predecessors, (7149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:47:19,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 306.0) internal successors, (15606), 51 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:47:19,519 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 306.0) internal successors, (15606), 51 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:47:19,519 INFO L175 Difference]: Start difference. First operand has 298 places, 628 transitions, 13384 flow. Second operand 50 states and 7149 transitions. [2023-09-01 04:47:19,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1291 transitions, 22541 flow [2023-09-01 04:47:21,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 1291 transitions, 21593 flow, removed 353 selfloop flow, removed 17 redundant places. [2023-09-01 04:47:21,100 INFO L231 Difference]: Finished difference. Result has 342 places, 846 transitions, 19346 flow [2023-09-01 04:47:21,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=12377, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=568, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=19346, PETRI_PLACES=342, PETRI_TRANSITIONS=846} [2023-09-01 04:47:21,101 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 300 predicate places. [2023-09-01 04:47:21,101 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 846 transitions, 19346 flow [2023-09-01 04:47:21,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 137.6) internal successors, (5504), 40 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:47:21,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:47:21,102 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:47:21,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 04:47:21,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-09-01 04:47:21,303 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:47:21,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:47:21,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1131368074, now seen corresponding path program 3 times [2023-09-01 04:47:21,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:47:21,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014922556] [2023-09-01 04:47:21,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:47:21,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:47:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:47:22,097 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 271 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-09-01 04:47:22,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:47:22,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014922556] [2023-09-01 04:47:22,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014922556] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:47:22,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58306591] [2023-09-01 04:47:22,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:47:22,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:47:22,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:47:22,101 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:47:22,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 04:47:22,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-09-01 04:47:22,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:47:22,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 04:47:22,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:47:22,841 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-09-01 04:47:22,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:47:23,096 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-09-01 04:47:23,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58306591] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:47:23,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:47:23,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 14] total 33 [2023-09-01 04:47:23,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659708324] [2023-09-01 04:47:23,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:47:23,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-09-01 04:47:23,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:47:23,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-09-01 04:47:23,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=942, Unknown=0, NotChecked=0, Total=1190 [2023-09-01 04:47:23,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-09-01 04:47:23,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 846 transitions, 19346 flow. Second operand has 35 states, 35 states have (on average 137.9142857142857) internal successors, (4827), 35 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:47:23,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:47:23,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-09-01 04:47:23,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:47:43,501 INFO L130 PetriNetUnfolder]: 33608/60213 cut-off events. [2023-09-01 04:47:43,501 INFO L131 PetriNetUnfolder]: For 533538/533538 co-relation queries the response was YES. [2023-09-01 04:47:44,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275460 conditions, 60213 events. 33608/60213 cut-off events. For 533538/533538 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 421723 event pairs, 4963 based on Foata normal form. 132/60345 useless extension candidates. Maximal degree in co-relation 273438. Up to 13087 conditions per place. [2023-09-01 04:47:44,534 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 670 selfloop transitions, 1366 changer transitions 0/2037 dead transitions. [2023-09-01 04:47:44,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 2037 transitions, 44227 flow [2023-09-01 04:47:44,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-09-01 04:47:44,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-09-01 04:47:44,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 5852 transitions. [2023-09-01 04:47:44,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4664434879642914 [2023-09-01 04:47:44,541 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 5852 transitions. [2023-09-01 04:47:44,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 5852 transitions. [2023-09-01 04:47:44,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:47:44,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 5852 transitions. [2023-09-01 04:47:44,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 142.73170731707316) internal successors, (5852), 41 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:47:44,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 306.0) internal successors, (12852), 42 states have internal predecessors, (12852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:47:44,559 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 306.0) internal successors, (12852), 42 states have internal predecessors, (12852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:47:44,559 INFO L175 Difference]: Start difference. First operand has 342 places, 846 transitions, 19346 flow. Second operand 41 states and 5852 transitions. [2023-09-01 04:47:44,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 2037 transitions, 44227 flow [2023-09-01 04:47:48,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 2037 transitions, 41632 flow, removed 992 selfloop flow, removed 14 redundant places. [2023-09-01 04:47:48,312 INFO L231 Difference]: Finished difference. Result has 381 places, 1646 transitions, 39905 flow [2023-09-01 04:47:48,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=18358, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=844, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=709, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=39905, PETRI_PLACES=381, PETRI_TRANSITIONS=1646} [2023-09-01 04:47:48,314 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 339 predicate places. [2023-09-01 04:47:48,314 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 1646 transitions, 39905 flow [2023-09-01 04:47:48,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 137.9142857142857) internal successors, (4827), 35 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:47:48,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:47:48,315 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:47:48,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-09-01 04:47:48,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-09-01 04:47:48,516 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:47:48,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:47:48,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1735374202, now seen corresponding path program 4 times [2023-09-01 04:47:48,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:47:48,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926725876] [2023-09-01 04:47:48,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:47:48,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:47:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:47:49,560 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:47:49,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:47:49,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926725876] [2023-09-01 04:47:49,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926725876] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:47:49,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357559853] [2023-09-01 04:47:49,561 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 04:47:49,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:47:49,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:47:49,565 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:47:49,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 04:47:50,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 04:47:50,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:47:50,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 31 conjunts are in the unsatisfiable core [2023-09-01 04:47:50,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:47:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:47:50,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:47:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:47:51,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357559853] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:47:51,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:47:51,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 50 [2023-09-01 04:47:51,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002523957] [2023-09-01 04:47:51,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:47:51,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-09-01 04:47:51,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:47:51,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-09-01 04:47:51,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=2041, Unknown=0, NotChecked=0, Total=2652 [2023-09-01 04:47:51,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-09-01 04:47:51,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 1646 transitions, 39905 flow. Second operand has 52 states, 52 states have (on average 137.46153846153845) internal successors, (7148), 52 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:47:51,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:47:51,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-09-01 04:47:51,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:48:40,978 INFO L130 PetriNetUnfolder]: 55915/100262 cut-off events. [2023-09-01 04:48:40,978 INFO L131 PetriNetUnfolder]: For 1060206/1060206 co-relation queries the response was YES. [2023-09-01 04:48:42,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466443 conditions, 100262 events. 55915/100262 cut-off events. For 1060206/1060206 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 766781 event pairs, 9247 based on Foata normal form. 430/100692 useless extension candidates. Maximal degree in co-relation 464079. Up to 21918 conditions per place. [2023-09-01 04:48:43,117 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 1163 selfloop transitions, 2344 changer transitions 0/3508 dead transitions. [2023-09-01 04:48:43,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 3508 transitions, 79914 flow [2023-09-01 04:48:43,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-09-01 04:48:43,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-09-01 04:48:43,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 9172 transitions. [2023-09-01 04:48:43,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46834150326797386 [2023-09-01 04:48:43,126 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 9172 transitions. [2023-09-01 04:48:43,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 9172 transitions. [2023-09-01 04:48:43,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:48:43,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 9172 transitions. [2023-09-01 04:48:43,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 143.3125) internal successors, (9172), 64 states have internal predecessors, (9172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:48:43,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 306.0) internal successors, (19890), 65 states have internal predecessors, (19890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:48:43,153 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 306.0) internal successors, (19890), 65 states have internal predecessors, (19890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:48:43,153 INFO L175 Difference]: Start difference. First operand has 381 places, 1646 transitions, 39905 flow. Second operand 64 states and 9172 transitions. [2023-09-01 04:48:43,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 3508 transitions, 79914 flow [2023-09-01 04:48:54,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 3508 transitions, 77199 flow, removed 1269 selfloop flow, removed 11 redundant places. [2023-09-01 04:48:54,308 INFO L231 Difference]: Finished difference. Result has 460 places, 2817 transitions, 74685 flow [2023-09-01 04:48:54,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=37897, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=74685, PETRI_PLACES=460, PETRI_TRANSITIONS=2817} [2023-09-01 04:48:54,310 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 418 predicate places. [2023-09-01 04:48:54,310 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 2817 transitions, 74685 flow [2023-09-01 04:48:54,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 137.46153846153845) internal successors, (7148), 52 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:48:54,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:48:54,311 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:48:54,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-09-01 04:48:54,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-09-01 04:48:54,520 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:48:54,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:48:54,520 INFO L85 PathProgramCache]: Analyzing trace with hash 979517914, now seen corresponding path program 5 times [2023-09-01 04:48:54,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:48:54,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204913100] [2023-09-01 04:48:54,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:48:54,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:48:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:48:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:48:55,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:48:55,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204913100] [2023-09-01 04:48:55,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204913100] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:48:55,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946436160] [2023-09-01 04:48:55,455 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 04:48:55,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:48:55,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:48:55,457 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:48:55,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-09-01 04:48:56,161 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-09-01 04:48:56,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:48:56,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 31 conjunts are in the unsatisfiable core [2023-09-01 04:48:56,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:48:56,308 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:48:56,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:48:56,798 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:48:56,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946436160] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:48:56,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:48:56,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 50 [2023-09-01 04:48:56,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557883375] [2023-09-01 04:48:56,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:48:56,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-09-01 04:48:56,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:48:56,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-09-01 04:48:56,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=2052, Unknown=0, NotChecked=0, Total=2652 [2023-09-01 04:48:57,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-09-01 04:48:57,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 2817 transitions, 74685 flow. Second operand has 52 states, 52 states have (on average 137.46153846153845) internal successors, (7148), 52 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:48:57,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:48:57,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-09-01 04:48:57,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:50:57,738 INFO L130 PetriNetUnfolder]: 83695/149958 cut-off events. [2023-09-01 04:50:57,738 INFO L131 PetriNetUnfolder]: For 1772680/1772680 co-relation queries the response was YES. [2023-09-01 04:51:00,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728256 conditions, 149958 events. 83695/149958 cut-off events. For 1772680/1772680 co-relation queries the response was YES. Maximal size of possible extension queue 1244. Compared 1229066 event pairs, 10707 based on Foata normal form. 428/150386 useless extension candidates. Maximal degree in co-relation 725732. Up to 32876 conditions per place. [2023-09-01 04:51:01,517 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 1370 selfloop transitions, 3645 changer transitions 0/5016 dead transitions. [2023-09-01 04:51:01,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 5016 transitions, 128780 flow [2023-09-01 04:51:01,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-09-01 04:51:01,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-09-01 04:51:01,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 9981 transitions. [2023-09-01 04:51:01,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46596638655462186 [2023-09-01 04:51:01,526 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 9981 transitions. [2023-09-01 04:51:01,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 9981 transitions. [2023-09-01 04:51:01,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:51:01,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 9981 transitions. [2023-09-01 04:51:01,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 142.5857142857143) internal successors, (9981), 70 states have internal predecessors, (9981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:51:01,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 306.0) internal successors, (21726), 71 states have internal predecessors, (21726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:51:01,556 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 306.0) internal successors, (21726), 71 states have internal predecessors, (21726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:51:01,557 INFO L175 Difference]: Start difference. First operand has 460 places, 2817 transitions, 74685 flow. Second operand 70 states and 9981 transitions. [2023-09-01 04:51:01,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 5016 transitions, 128780 flow [2023-09-01 04:51:33,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 5016 transitions, 123649 flow, removed 2059 selfloop flow, removed 9 redundant places. [2023-09-01 04:51:33,293 INFO L231 Difference]: Finished difference. Result has 552 places, 4363 transitions, 123808 flow [2023-09-01 04:51:33,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=71046, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2795, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=123808, PETRI_PLACES=552, PETRI_TRANSITIONS=4363} [2023-09-01 04:51:33,297 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 510 predicate places. [2023-09-01 04:51:33,297 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 4363 transitions, 123808 flow [2023-09-01 04:51:33,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 137.46153846153845) internal successors, (7148), 52 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:51:33,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:51:33,299 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:51:33,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-09-01 04:51:33,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:51:33,506 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:51:33,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:51:33,506 INFO L85 PathProgramCache]: Analyzing trace with hash 2019786691, now seen corresponding path program 6 times [2023-09-01 04:51:33,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:51:33,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75042675] [2023-09-01 04:51:33,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:51:33,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:51:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:51:34,692 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 1 proven. 690 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-09-01 04:51:34,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:51:34,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75042675] [2023-09-01 04:51:34,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75042675] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:51:34,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830059293] [2023-09-01 04:51:34,693 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 04:51:34,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:51:34,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:51:34,694 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:51:34,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-09-01 04:51:37,241 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2023-09-01 04:51:37,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:51:37,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 35 conjunts are in the unsatisfiable core [2023-09-01 04:51:37,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:51:37,400 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 690 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-09-01 04:51:37,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:51:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 690 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-09-01 04:51:37,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830059293] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:51:37,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:51:37,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 24] total 53 [2023-09-01 04:51:37,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444090157] [2023-09-01 04:51:37,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:51:37,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-09-01 04:51:37,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:51:37,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-09-01 04:51:37,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=640, Invalid=2330, Unknown=0, NotChecked=0, Total=2970 [2023-09-01 04:51:38,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-09-01 04:51:38,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 4363 transitions, 123808 flow. Second operand has 55 states, 55 states have (on average 137.6) internal successors, (7568), 55 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:51:38,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:51:38,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-09-01 04:51:38,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:30,332 INFO L130 PetriNetUnfolder]: 119584/214365 cut-off events. [2023-09-01 04:56:30,333 INFO L131 PetriNetUnfolder]: For 2851648/2851648 co-relation queries the response was YES. [2023-09-01 04:56:35,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1075275 conditions, 214365 events. 119584/214365 cut-off events. For 2851648/2851648 co-relation queries the response was YES. Maximal size of possible extension queue 1673. Compared 1841799 event pairs, 13193 based on Foata normal form. 760/215125 useless extension candidates. Maximal degree in co-relation 1072662. Up to 47135 conditions per place. [2023-09-01 04:56:36,266 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 895 selfloop transitions, 6187 changer transitions 0/7083 dead transitions. [2023-09-01 04:56:36,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 7083 transitions, 198031 flow [2023-09-01 04:56:36,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-09-01 04:56:36,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-09-01 04:56:36,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 9990 transitions. [2023-09-01 04:56:36,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46638655462184875 [2023-09-01 04:56:36,274 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 9990 transitions. [2023-09-01 04:56:36,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 9990 transitions. [2023-09-01 04:56:36,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:36,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 9990 transitions. [2023-09-01 04:56:36,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 142.71428571428572) internal successors, (9990), 70 states have internal predecessors, (9990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:36,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 306.0) internal successors, (21726), 71 states have internal predecessors, (21726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:36,299 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 306.0) internal successors, (21726), 71 states have internal predecessors, (21726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:36,299 INFO L175 Difference]: Start difference. First operand has 552 places, 4363 transitions, 123808 flow. Second operand 70 states and 9990 transitions. [2023-09-01 04:56:36,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 7083 transitions, 198031 flow [2023-09-01 04:58:03,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 7083 transitions, 190177 flow, removed 3304 selfloop flow, removed 20 redundant places. [2023-09-01 04:58:03,574 INFO L231 Difference]: Finished difference. Result has 620 places, 6428 transitions, 191619 flow [2023-09-01 04:58:03,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=117297, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=191619, PETRI_PLACES=620, PETRI_TRANSITIONS=6428} [2023-09-01 04:58:03,578 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 578 predicate places. [2023-09-01 04:58:03,578 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 6428 transitions, 191619 flow [2023-09-01 04:58:03,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 137.6) internal successors, (7568), 55 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:58:03,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:58:03,579 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:58:03,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-09-01 04:58:03,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-09-01 04:58:03,780 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:58:03,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:58:03,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1060970528, now seen corresponding path program 7 times [2023-09-01 04:58:03,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:58:03,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488934703] [2023-09-01 04:58:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:58:03,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:58:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:58:05,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-09-01 04:58:05,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:58:05,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488934703] [2023-09-01 04:58:05,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488934703] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:58:05,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102872438] [2023-09-01 04:58:05,223 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 04:58:05,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:58:05,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:58:05,225 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:58:05,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-09-01 04:58:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:58:05,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 41 conjunts are in the unsatisfiable core [2023-09-01 04:58:05,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:58:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-09-01 04:58:05,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:58:06,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-09-01 04:58:06,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102872438] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:58:06,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:58:06,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 30, 30] total 65 [2023-09-01 04:58:06,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183784828] [2023-09-01 04:58:06,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:58:06,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-09-01 04:58:06,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:58:06,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-09-01 04:58:06,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=978, Invalid=3444, Unknown=0, NotChecked=0, Total=4422 [2023-09-01 04:58:06,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-09-01 04:58:06,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 6428 transitions, 191619 flow. Second operand has 67 states, 67 states have (on average 137.47761194029852) internal successors, (9211), 67 states have internal predecessors, (9211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:58:06,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:58:06,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-09-01 04:58:06,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15