./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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-C-DAC/pthread-demo-datarace-1.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 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 13:40:37,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 13:40:37,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 13:40:37,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 13:40:37,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 13:40:37,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 13:40:37,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 13:40:37,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 13:40:37,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 13:40:37,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 13:40:37,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 13:40:37,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 13:40:37,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 13:40:37,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 13:40:37,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 13:40:37,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 13:40:37,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 13:40:37,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 13:40:37,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 13:40:37,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 13:40:37,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 13:40:37,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 13:40:37,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 13:40:37,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 13:40:37,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 13:40:37,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 13:40:37,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 13:40:37,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 13:40:37,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 13:40:37,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 13:40:37,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 13:40:37,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 13:40:37,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 13:40:37,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 13:40:37,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 13:40:37,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 13:40:37,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 13:40:37,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 13:40:37,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 13:40:37,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 13:40:37,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 13:40:37,248 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 13:40:37,280 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 13:40:37,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 13:40:37,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 13:40:37,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 13:40:37,283 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 13:40:37,283 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 13:40:37,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 13:40:37,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 13:40:37,284 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 13:40:37,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 13:40:37,285 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 13:40:37,285 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 13:40:37,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 13:40:37,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 13:40:37,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 13:40:37,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 13:40:37,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 13:40:37,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 13:40:37,286 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 13:40:37,286 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 13:40:37,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 13:40:37,287 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 13:40:37,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 13:40:37,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 13:40:37,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 13:40:37,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 13:40:37,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:40:37,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 13:40:37,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 13:40:37,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 13:40:37,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 13:40:37,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 13:40:37,289 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 13:40:37,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 13:40:37,289 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 13:40:37,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 13:40:37,289 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 13:40:37,290 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 13:40:37,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 13:40:37,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 13:40:37,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 13:40:37,587 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 13:40:37,587 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 13:40:37,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-08-30 13:40:38,682 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 13:40:39,030 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 13:40:39,030 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-08-30 13:40:39,051 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0843e90c4/bf310300d99e49268b28ca0a0c98296d/FLAGeb5728291 [2023-08-30 13:40:39,072 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0843e90c4/bf310300d99e49268b28ca0a0c98296d [2023-08-30 13:40:39,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 13:40:39,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 13:40:39,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 13:40:39,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 13:40:39,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 13:40:39,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:40:39" (1/1) ... [2023-08-30 13:40:39,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@598298d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:40:39, skipping insertion in model container [2023-08-30 13:40:39,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:40:39" (1/1) ... [2023-08-30 13:40:39,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 13:40:39,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 13:40:39,312 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-C-DAC/pthread-demo-datarace-1.i[820,833] [2023-08-30 13:40:39,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:40:39,720 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 13:40:39,731 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-C-DAC/pthread-demo-datarace-1.i[820,833] [2023-08-30 13:40:39,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:40:39,906 INFO L208 MainTranslator]: Completed translation [2023-08-30 13:40:39,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:40:39 WrapperNode [2023-08-30 13:40:39,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 13:40:39,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 13:40:39,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 13:40:39,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 13:40:39,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:40:39" (1/1) ... [2023-08-30 13:40:39,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:40:39" (1/1) ... [2023-08-30 13:40:39,975 INFO L138 Inliner]: procedures = 364, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2023-08-30 13:40:39,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 13:40:39,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 13:40:39,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 13:40:39,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 13:40:39,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:40:39" (1/1) ... [2023-08-30 13:40:39,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:40:39" (1/1) ... [2023-08-30 13:40:39,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:40:39" (1/1) ... [2023-08-30 13:40:39,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:40:39" (1/1) ... [2023-08-30 13:40:40,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:40:39" (1/1) ... [2023-08-30 13:40:40,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:40:39" (1/1) ... [2023-08-30 13:40:40,011 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:40:39" (1/1) ... [2023-08-30 13:40:40,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:40:39" (1/1) ... [2023-08-30 13:40:40,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 13:40:40,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 13:40:40,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 13:40:40,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 13:40:40,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:40:39" (1/1) ... [2023-08-30 13:40:40,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:40:40,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:40:40,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 13:40:40,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 13:40:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 13:40:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 13:40:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 13:40:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 13:40:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 13:40:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 13:40:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2023-08-30 13:40:40,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2023-08-30 13:40:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 13:40:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 13:40:40,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 13:40:40,097 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 13:40:40,234 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 13:40:40,235 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 13:40:40,396 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 13:40:40,406 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 13:40:40,420 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 13:40:40,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:40:40 BoogieIcfgContainer [2023-08-30 13:40:40,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 13:40:40,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 13:40:40,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 13:40:40,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 13:40:40,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:40:39" (1/3) ... [2023-08-30 13:40:40,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7128449d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:40:40, skipping insertion in model container [2023-08-30 13:40:40,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:40:39" (2/3) ... [2023-08-30 13:40:40,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7128449d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:40:40, skipping insertion in model container [2023-08-30 13:40:40,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:40:40" (3/3) ... [2023-08-30 13:40:40,442 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2023-08-30 13:40:40,449 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 13:40:40,457 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 13:40:40,463 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 13:40:40,463 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 13:40:40,535 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 13:40:40,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 101 transitions, 210 flow [2023-08-30 13:40:40,604 INFO L130 PetriNetUnfolder]: 7/100 cut-off events. [2023-08-30 13:40:40,604 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 13:40:40,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 100 events. 7/100 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 145 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-08-30 13:40:40,609 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 101 transitions, 210 flow [2023-08-30 13:40:40,613 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 82 transitions, 167 flow [2023-08-30 13:40:40,616 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 13:40:40,631 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 82 transitions, 167 flow [2023-08-30 13:40:40,637 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 82 transitions, 167 flow [2023-08-30 13:40:40,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 82 transitions, 167 flow [2023-08-30 13:40:40,670 INFO L130 PetriNetUnfolder]: 5/82 cut-off events. [2023-08-30 13:40:40,671 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:40:40,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 82 events. 5/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-08-30 13:40:40,674 INFO L119 LiptonReduction]: Number of co-enabled transitions 1458 [2023-08-30 13:40:42,780 INFO L134 LiptonReduction]: Checked pairs total: 3440 [2023-08-30 13:40:42,781 INFO L136 LiptonReduction]: Total number of compositions: 73 [2023-08-30 13:40:42,792 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 13:40:42,798 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;@565e1526, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 13:40:42,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 13:40:42,801 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-08-30 13:40:42,801 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:40:42,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:42,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 13:40:42,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:40:42,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:42,807 INFO L85 PathProgramCache]: Analyzing trace with hash 347052882, now seen corresponding path program 1 times [2023-08-30 13:40:42,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:42,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939554829] [2023-08-30 13:40:42,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:42,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:43,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:43,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:43,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939554829] [2023-08-30 13:40:43,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939554829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:40:43,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:40:43,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 13:40:43,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828062583] [2023-08-30 13:40:43,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:40:43,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:40:43,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:43,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:40:43,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:40:43,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 174 [2023-08-30 13:40:43,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:43,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 174 [2023-08-30 13:40:43,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:40:43,127 INFO L130 PetriNetUnfolder]: 110/230 cut-off events. [2023-08-30 13:40:43,127 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:40:43,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 230 events. 110/230 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 927 event pairs, 38 based on Foata normal form. 9/154 useless extension candidates. Maximal degree in co-relation 446. Up to 188 conditions per place. [2023-08-30 13:40:43,130 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 27 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-08-30 13:40:43,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 32 transitions, 127 flow [2023-08-30 13:40:43,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:40:43,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:40:43,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2023-08-30 13:40:43,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553639846743295 [2023-08-30 13:40:43,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2023-08-30 13:40:43,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2023-08-30 13:40:43,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:40:43,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2023-08-30 13:40:43,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,154 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,155 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 49 flow. Second operand 3 states and 289 transitions. [2023-08-30 13:40:43,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 32 transitions, 127 flow [2023-08-30 13:40:43,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:40:43,159 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 73 flow [2023-08-30 13:40:43,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-08-30 13:40:43,164 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-08-30 13:40:43,164 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 73 flow [2023-08-30 13:40:43,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:43,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:40:43,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 13:40:43,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread_function_mutexErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:40:43,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:43,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1489620701, now seen corresponding path program 1 times [2023-08-30 13:40:43,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:43,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193074336] [2023-08-30 13:40:43,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:43,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:43,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:43,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:43,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193074336] [2023-08-30 13:40:43,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193074336] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:40:43,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:40:43,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:40:43,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463935023] [2023-08-30 13:40:43,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:40:43,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:40:43,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:43,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:40:43,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:40:43,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 174 [2023-08-30 13:40:43,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:43,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 174 [2023-08-30 13:40:43,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:40:43,316 INFO L130 PetriNetUnfolder]: 123/262 cut-off events. [2023-08-30 13:40:43,316 INFO L131 PetriNetUnfolder]: For 7/25 co-relation queries the response was YES. [2023-08-30 13:40:43,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 262 events. 123/262 cut-off events. For 7/25 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1177 event pairs, 56 based on Foata normal form. 3/166 useless extension candidates. Maximal degree in co-relation 574. Up to 137 conditions per place. [2023-08-30 13:40:43,319 INFO L137 encePairwiseOnDemand]: 169/174 looper letters, 29 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-30 13:40:43,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 37 transitions, 165 flow [2023-08-30 13:40:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:40:43,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:40:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2023-08-30 13:40:43,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2023-08-30 13:40:43,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2023-08-30 13:40:43,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2023-08-30 13:40:43,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:40:43,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2023-08-30 13:40:43,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,326 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,327 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 73 flow. Second operand 3 states and 294 transitions. [2023-08-30 13:40:43,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 37 transitions, 165 flow [2023-08-30 13:40:43,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 37 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:40:43,329 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 86 flow [2023-08-30 13:40:43,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2023-08-30 13:40:43,330 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-08-30 13:40:43,330 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 86 flow [2023-08-30 13:40:43,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:43,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:40:43,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 13:40:43,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:40:43,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:43,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1375754503, now seen corresponding path program 1 times [2023-08-30 13:40:43,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:43,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889769109] [2023-08-30 13:40:43,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:43,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:43,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:43,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:43,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889769109] [2023-08-30 13:40:43,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889769109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:40:43,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:40:43,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:40:43,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136763738] [2023-08-30 13:40:43,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:40:43,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:40:43,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:43,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:40:43,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:40:43,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-30 13:40:43,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:43,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-30 13:40:43,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:40:43,466 INFO L130 PetriNetUnfolder]: 156/417 cut-off events. [2023-08-30 13:40:43,467 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-08-30 13:40:43,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 417 events. 156/417 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2140 event pairs, 83 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 913. Up to 220 conditions per place. [2023-08-30 13:40:43,470 INFO L137 encePairwiseOnDemand]: 169/174 looper letters, 32 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-08-30 13:40:43,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 204 flow [2023-08-30 13:40:43,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:40:43,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:40:43,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2023-08-30 13:40:43,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574712643678161 [2023-08-30 13:40:43,483 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 291 transitions. [2023-08-30 13:40:43,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 291 transitions. [2023-08-30 13:40:43,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:40:43,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 291 transitions. [2023-08-30 13:40:43,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,487 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,487 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 86 flow. Second operand 3 states and 291 transitions. [2023-08-30 13:40:43,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 204 flow [2023-08-30 13:40:43,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:40:43,489 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 100 flow [2023-08-30 13:40:43,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2023-08-30 13:40:43,490 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2023-08-30 13:40:43,490 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 100 flow [2023-08-30 13:40:43,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:43,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:40:43,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 13:40:43,491 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:40:43,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:43,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1301367715, now seen corresponding path program 1 times [2023-08-30 13:40:43,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:43,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304065768] [2023-08-30 13:40:43,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:43,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:43,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:43,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:43,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304065768] [2023-08-30 13:40:43,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304065768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:40:43,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:40:43,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 13:40:43,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889557448] [2023-08-30 13:40:43,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:40:43,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:40:43,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:43,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:40:43,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:40:43,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-30 13:40:43,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:43,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-30 13:40:43,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:40:43,639 INFO L130 PetriNetUnfolder]: 59/220 cut-off events. [2023-08-30 13:40:43,639 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2023-08-30 13:40:43,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 220 events. 59/220 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 988 event pairs, 21 based on Foata normal form. 22/208 useless extension candidates. Maximal degree in co-relation 544. Up to 90 conditions per place. [2023-08-30 13:40:43,641 INFO L137 encePairwiseOnDemand]: 166/174 looper letters, 15 selfloop transitions, 10 changer transitions 0/31 dead transitions. [2023-08-30 13:40:43,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 167 flow [2023-08-30 13:40:43,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:40:43,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:40:43,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-08-30 13:40:43,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2023-08-30 13:40:43,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-08-30 13:40:43,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-08-30 13:40:43,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:40:43,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-08-30 13:40:43,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,648 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,648 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 100 flow. Second operand 3 states and 282 transitions. [2023-08-30 13:40:43,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 167 flow [2023-08-30 13:40:43,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:40:43,650 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 118 flow [2023-08-30 13:40:43,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-08-30 13:40:43,651 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2023-08-30 13:40:43,651 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 118 flow [2023-08-30 13:40:43,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:43,652 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:40:43,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 13:40:43,652 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:40:43,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:43,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1301366572, now seen corresponding path program 1 times [2023-08-30 13:40:43,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:43,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980078804] [2023-08-30 13:40:43,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:43,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:43,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:43,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980078804] [2023-08-30 13:40:43,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980078804] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:40:43,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697292892] [2023-08-30 13:40:43,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:43,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:40:43,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:40:43,732 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:40:43,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 13:40:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:43,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 13:40:43,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:40:43,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:43,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:40:43,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697292892] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:40:43,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:40:43,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-30 13:40:43,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285510227] [2023-08-30 13:40:43,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:40:43,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 13:40:43,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:43,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 13:40:43,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 13:40:43,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 174 [2023-08-30 13:40:43,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:43,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:43,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 174 [2023-08-30 13:40:43,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:40:44,056 INFO L130 PetriNetUnfolder]: 63/204 cut-off events. [2023-08-30 13:40:44,056 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-08-30 13:40:44,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 204 events. 63/204 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 758 event pairs, 16 based on Foata normal form. 10/190 useless extension candidates. Maximal degree in co-relation 594. Up to 134 conditions per place. [2023-08-30 13:40:44,058 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 34 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2023-08-30 13:40:44,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 42 transitions, 262 flow [2023-08-30 13:40:44,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 13:40:44,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 13:40:44,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 527 transitions. [2023-08-30 13:40:44,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047892720306514 [2023-08-30 13:40:44,061 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 527 transitions. [2023-08-30 13:40:44,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 527 transitions. [2023-08-30 13:40:44,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:40:44,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 527 transitions. [2023-08-30 13:40:44,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:44,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:44,069 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:44,070 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 118 flow. Second operand 6 states and 527 transitions. [2023-08-30 13:40:44,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 42 transitions, 262 flow [2023-08-30 13:40:44,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 42 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:40:44,077 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 127 flow [2023-08-30 13:40:44,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=127, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-08-30 13:40:44,078 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2023-08-30 13:40:44,079 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 127 flow [2023-08-30 13:40:44,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:44,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:44,080 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:40:44,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 13:40:44,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:40:44,286 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:40:44,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:44,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1301366570, now seen corresponding path program 1 times [2023-08-30 13:40:44,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:44,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433913016] [2023-08-30 13:40:44,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:44,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:44,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:44,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433913016] [2023-08-30 13:40:44,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433913016] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:40:44,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112311373] [2023-08-30 13:40:44,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:44,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:40:44,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:40:44,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:40:44,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 13:40:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:44,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 13:40:44,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:40:44,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:44,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:40:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:44,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112311373] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:40:44,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:40:44,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-08-30 13:40:44,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252076426] [2023-08-30 13:40:44,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:40:44,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 13:40:44,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:44,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 13:40:44,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 13:40:44,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 174 [2023-08-30 13:40:44,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 127 flow. Second operand has 10 states, 10 states have (on average 81.4) internal successors, (814), 10 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:44,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:44,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 174 [2023-08-30 13:40:44,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:40:44,731 INFO L130 PetriNetUnfolder]: 167/484 cut-off events. [2023-08-30 13:40:44,732 INFO L131 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2023-08-30 13:40:44,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 484 events. 167/484 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2400 event pairs, 26 based on Foata normal form. 44/480 useless extension candidates. Maximal degree in co-relation 1396. Up to 147 conditions per place. [2023-08-30 13:40:44,736 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 85 selfloop transitions, 22 changer transitions 0/108 dead transitions. [2023-08-30 13:40:44,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 108 transitions, 653 flow [2023-08-30 13:40:44,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 13:40:44,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 13:40:44,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 982 transitions. [2023-08-30 13:40:44,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130616509926855 [2023-08-30 13:40:44,739 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 982 transitions. [2023-08-30 13:40:44,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 982 transitions. [2023-08-30 13:40:44,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:40:44,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 982 transitions. [2023-08-30 13:40:44,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 89.27272727272727) internal successors, (982), 11 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:44,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 174.0) internal successors, (2088), 12 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:44,747 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 174.0) internal successors, (2088), 12 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:44,748 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 127 flow. Second operand 11 states and 982 transitions. [2023-08-30 13:40:44,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 108 transitions, 653 flow [2023-08-30 13:40:44,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 108 transitions, 649 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 13:40:44,754 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 311 flow [2023-08-30 13:40:44,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=311, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-08-30 13:40:44,757 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 26 predicate places. [2023-08-30 13:40:44,757 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 311 flow [2023-08-30 13:40:44,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 81.4) internal successors, (814), 10 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:44,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:44,758 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 13:40:44,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 13:40:44,963 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,SelfDestructingSolverStorable5 [2023-08-30 13:40:44,963 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_function_mutexErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:40:44,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:44,964 INFO L85 PathProgramCache]: Analyzing trace with hash -777781849, now seen corresponding path program 1 times [2023-08-30 13:40:44,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:44,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812450391] [2023-08-30 13:40:44,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:44,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:44,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 13:40:44,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:44,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812450391] [2023-08-30 13:40:44,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812450391] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:40:44,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:40:44,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:40:44,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423429580] [2023-08-30 13:40:44,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:40:44,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:40:44,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:44,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:40:44,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:40:45,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-30 13:40:45,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:45,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:45,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-30 13:40:45,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:40:45,069 INFO L130 PetriNetUnfolder]: 131/389 cut-off events. [2023-08-30 13:40:45,070 INFO L131 PetriNetUnfolder]: For 652/652 co-relation queries the response was YES. [2023-08-30 13:40:45,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 389 events. 131/389 cut-off events. For 652/652 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1907 event pairs, 32 based on Foata normal form. 0/348 useless extension candidates. Maximal degree in co-relation 1384. Up to 210 conditions per place. [2023-08-30 13:40:45,072 INFO L137 encePairwiseOnDemand]: 170/174 looper letters, 35 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2023-08-30 13:40:45,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 418 flow [2023-08-30 13:40:45,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:40:45,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:40:45,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-08-30 13:40:45,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2023-08-30 13:40:45,074 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-08-30 13:40:45,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-08-30 13:40:45,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:40:45,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-08-30 13:40:45,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:45,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:45,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:45,077 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 311 flow. Second operand 3 states and 282 transitions. [2023-08-30 13:40:45,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 418 flow [2023-08-30 13:40:45,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 389 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-30 13:40:45,083 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 294 flow [2023-08-30 13:40:45,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-08-30 13:40:45,084 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 26 predicate places. [2023-08-30 13:40:45,084 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 294 flow [2023-08-30 13:40:45,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:45,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:45,084 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 13:40:45,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 13:40:45,085 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:40:45,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:45,085 INFO L85 PathProgramCache]: Analyzing trace with hash -777781864, now seen corresponding path program 1 times [2023-08-30 13:40:45,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:45,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945411061] [2023-08-30 13:40:45,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:45,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:45,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:45,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:45,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945411061] [2023-08-30 13:40:45,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945411061] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:40:45,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612826708] [2023-08-30 13:40:45,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:45,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:40:45,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:40:45,130 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:40:45,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 13:40:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:45,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 13:40:45,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:40:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:45,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:40:45,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612826708] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:40:45,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:40:45,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 13:40:45,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784569739] [2023-08-30 13:40:45,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:40:45,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 13:40:45,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:45,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 13:40:45,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 13:40:45,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 174 [2023-08-30 13:40:45,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:45,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:45,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 174 [2023-08-30 13:40:45,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:40:45,314 INFO L130 PetriNetUnfolder]: 124/379 cut-off events. [2023-08-30 13:40:45,314 INFO L131 PetriNetUnfolder]: For 733/733 co-relation queries the response was YES. [2023-08-30 13:40:45,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1447 conditions, 379 events. 124/379 cut-off events. For 733/733 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1785 event pairs, 28 based on Foata normal form. 10/365 useless extension candidates. Maximal degree in co-relation 1423. Up to 192 conditions per place. [2023-08-30 13:40:45,317 INFO L137 encePairwiseOnDemand]: 171/174 looper letters, 46 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-08-30 13:40:45,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 465 flow [2023-08-30 13:40:45,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 13:40:45,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 13:40:45,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 381 transitions. [2023-08-30 13:40:45,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2023-08-30 13:40:45,319 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 381 transitions. [2023-08-30 13:40:45,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 381 transitions. [2023-08-30 13:40:45,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:40:45,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 381 transitions. [2023-08-30 13:40:45,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:45,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:45,323 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:45,323 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 294 flow. Second operand 4 states and 381 transitions. [2023-08-30 13:40:45,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 465 flow [2023-08-30 13:40:45,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 60 transitions, 461 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:40:45,327 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 289 flow [2023-08-30 13:40:45,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-08-30 13:40:45,330 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2023-08-30 13:40:45,331 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 289 flow [2023-08-30 13:40:45,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:45,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:45,331 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 13:40:45,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 13:40:45,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:40:45,539 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:40:45,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:45,540 INFO L85 PathProgramCache]: Analyzing trace with hash 210246718, now seen corresponding path program 1 times [2023-08-30 13:40:45,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:45,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518894252] [2023-08-30 13:40:45,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:45,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:45,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:45,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518894252] [2023-08-30 13:40:45,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518894252] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:40:45,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:40:45,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:40:45,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459591228] [2023-08-30 13:40:45,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:40:45,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:40:45,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:45,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:40:45,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:40:45,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-30 13:40:45,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 289 flow. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:45,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:45,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-30 13:40:45,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:40:45,640 INFO L130 PetriNetUnfolder]: 113/352 cut-off events. [2023-08-30 13:40:45,640 INFO L131 PetriNetUnfolder]: For 798/798 co-relation queries the response was YES. [2023-08-30 13:40:45,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1296 conditions, 352 events. 113/352 cut-off events. For 798/798 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1611 event pairs, 24 based on Foata normal form. 0/338 useless extension candidates. Maximal degree in co-relation 1271. Up to 255 conditions per place. [2023-08-30 13:40:45,642 INFO L137 encePairwiseOnDemand]: 172/174 looper letters, 42 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-08-30 13:40:45,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 55 transitions, 465 flow [2023-08-30 13:40:45,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:40:45,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:40:45,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-08-30 13:40:45,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2023-08-30 13:40:45,644 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-08-30 13:40:45,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-08-30 13:40:45,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:40:45,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-08-30 13:40:45,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:45,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:45,646 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:45,646 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 289 flow. Second operand 3 states and 280 transitions. [2023-08-30 13:40:45,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 55 transitions, 465 flow [2023-08-30 13:40:45,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 459 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 13:40:45,651 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 283 flow [2023-08-30 13:40:45,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=49, 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=283, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-08-30 13:40:45,652 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 26 predicate places. [2023-08-30 13:40:45,652 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 283 flow [2023-08-30 13:40:45,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:45,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:45,653 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 13:40:45,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 13:40:45,653 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:40:45,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:45,654 INFO L85 PathProgramCache]: Analyzing trace with hash 210246719, now seen corresponding path program 1 times [2023-08-30 13:40:45,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:45,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594954312] [2023-08-30 13:40:45,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:45,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:45,685 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 13:40:45,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:45,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594954312] [2023-08-30 13:40:45,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594954312] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:40:45,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:40:45,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:40:45,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130070462] [2023-08-30 13:40:45,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:40:45,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:40:45,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:45,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:40:45,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:40:45,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 174 [2023-08-30 13:40:45,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 283 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:45,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:45,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 174 [2023-08-30 13:40:45,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:40:45,747 INFO L130 PetriNetUnfolder]: 99/310 cut-off events. [2023-08-30 13:40:45,747 INFO L131 PetriNetUnfolder]: For 698/698 co-relation queries the response was YES. [2023-08-30 13:40:45,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1113 conditions, 310 events. 99/310 cut-off events. For 698/698 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1322 event pairs, 38 based on Foata normal form. 0/310 useless extension candidates. Maximal degree in co-relation 1088. Up to 156 conditions per place. [2023-08-30 13:40:45,749 INFO L137 encePairwiseOnDemand]: 170/174 looper letters, 39 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2023-08-30 13:40:45,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 459 flow [2023-08-30 13:40:45,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:40:45,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:40:45,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2023-08-30 13:40:45,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306513409961686 [2023-08-30 13:40:45,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2023-08-30 13:40:45,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2023-08-30 13:40:45,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:40:45,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2023-08-30 13:40:45,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:45,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:45,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:45,753 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 283 flow. Second operand 3 states and 277 transitions. [2023-08-30 13:40:45,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 459 flow [2023-08-30 13:40:45,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:40:45,757 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 294 flow [2023-08-30 13:40:45,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=49, 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=294, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-08-30 13:40:45,758 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2023-08-30 13:40:45,758 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 294 flow [2023-08-30 13:40:45,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:45,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:45,759 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1] [2023-08-30 13:40:45,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 13:40:45,759 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:40:45,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:45,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1690907170, now seen corresponding path program 2 times [2023-08-30 13:40:45,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:45,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773495950] [2023-08-30 13:40:45,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:45,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:45,886 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:45,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:45,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773495950] [2023-08-30 13:40:45,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773495950] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:40:45,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084676740] [2023-08-30 13:40:45,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 13:40:45,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:40:45,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:40:45,889 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:40:45,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 13:40:45,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 13:40:45,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:40:45,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 13:40:45,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:40:46,029 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:46,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:40:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:46,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084676740] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:40:46,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:40:46,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 13:40:46,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356065770] [2023-08-30 13:40:46,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:40:46,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 13:40:46,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:46,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 13:40:46,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-30 13:40:46,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 174 [2023-08-30 13:40:46,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 294 flow. Second operand has 18 states, 18 states have (on average 81.22222222222223) internal successors, (1462), 18 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:46,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:46,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 174 [2023-08-30 13:40:46,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:40:46,859 INFO L130 PetriNetUnfolder]: 412/1123 cut-off events. [2023-08-30 13:40:46,860 INFO L131 PetriNetUnfolder]: For 4756/4756 co-relation queries the response was YES. [2023-08-30 13:40:46,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4265 conditions, 1123 events. 412/1123 cut-off events. For 4756/4756 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5765 event pairs, 65 based on Foata normal form. 112/1235 useless extension candidates. Maximal degree in co-relation 4240. Up to 217 conditions per place. [2023-08-30 13:40:46,868 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 265 selfloop transitions, 83 changer transitions 0/349 dead transitions. [2023-08-30 13:40:46,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 349 transitions, 2915 flow [2023-08-30 13:40:46,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-30 13:40:46,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-30 13:40:46,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3450 transitions. [2023-08-30 13:40:46,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083996463306808 [2023-08-30 13:40:46,876 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3450 transitions. [2023-08-30 13:40:46,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3450 transitions. [2023-08-30 13:40:46,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:40:46,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3450 transitions. [2023-08-30 13:40:46,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 88.46153846153847) internal successors, (3450), 39 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:46,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 174.0) internal successors, (6960), 40 states have internal predecessors, (6960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:46,895 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 174.0) internal successors, (6960), 40 states have internal predecessors, (6960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:46,895 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 294 flow. Second operand 39 states and 3450 transitions. [2023-08-30 13:40:46,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 349 transitions, 2915 flow [2023-08-30 13:40:46,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 349 transitions, 2835 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:40:46,909 INFO L231 Difference]: Finished difference. Result has 119 places, 110 transitions, 1181 flow [2023-08-30 13:40:46,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1181, PETRI_PLACES=119, PETRI_TRANSITIONS=110} [2023-08-30 13:40:46,910 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 94 predicate places. [2023-08-30 13:40:46,910 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 110 transitions, 1181 flow [2023-08-30 13:40:46,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.22222222222223) internal successors, (1462), 18 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:46,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:46,911 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1] [2023-08-30 13:40:46,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 13:40:47,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:40:47,117 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:40:47,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:47,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1217028078, now seen corresponding path program 3 times [2023-08-30 13:40:47,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:47,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734184544] [2023-08-30 13:40:47,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:47,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:47,437 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:47,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:47,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734184544] [2023-08-30 13:40:47,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734184544] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:40:47,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860137266] [2023-08-30 13:40:47,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 13:40:47,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:40:47,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:40:47,440 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:40:47,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 13:40:47,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-08-30 13:40:47,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:40:47,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 13:40:47,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:40:47,641 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:47,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:40:47,903 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:47,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860137266] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:40:47,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:40:47,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-08-30 13:40:47,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88051159] [2023-08-30 13:40:47,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:40:47,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 13:40:47,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:47,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 13:40:47,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-08-30 13:40:48,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 174 [2023-08-30 13:40:48,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 110 transitions, 1181 flow. Second operand has 34 states, 34 states have (on average 81.11764705882354) internal successors, (2758), 34 states have internal predecessors, (2758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:48,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:48,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 174 [2023-08-30 13:40:48,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:40:51,790 INFO L130 PetriNetUnfolder]: 1562/4261 cut-off events. [2023-08-30 13:40:51,790 INFO L131 PetriNetUnfolder]: For 147750/147750 co-relation queries the response was YES. [2023-08-30 13:40:51,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18394 conditions, 4261 events. 1562/4261 cut-off events. For 147750/147750 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 27371 event pairs, 219 based on Foata normal form. 480/4741 useless extension candidates. Maximal degree in co-relation 18337. Up to 897 conditions per place. [2023-08-30 13:40:51,874 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 951 selfloop transitions, 348 changer transitions 0/1300 dead transitions. [2023-08-30 13:40:51,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 1300 transitions, 13132 flow [2023-08-30 13:40:51,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-08-30 13:40:51,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2023-08-30 13:40:51,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 12666 transitions. [2023-08-30 13:40:51,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5090426814564746 [2023-08-30 13:40:51,900 INFO L72 ComplementDD]: Start complementDD. Operand 143 states and 12666 transitions. [2023-08-30 13:40:51,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 143 states and 12666 transitions. [2023-08-30 13:40:51,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:40:51,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 143 states and 12666 transitions. [2023-08-30 13:40:51,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 144 states, 143 states have (on average 88.57342657342657) internal successors, (12666), 143 states have internal predecessors, (12666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:51,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 144 states, 144 states have (on average 174.0) internal successors, (25056), 144 states have internal predecessors, (25056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:51,984 INFO L81 ComplementDD]: Finished complementDD. Result has 144 states, 144 states have (on average 174.0) internal successors, (25056), 144 states have internal predecessors, (25056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:51,984 INFO L175 Difference]: Start difference. First operand has 119 places, 110 transitions, 1181 flow. Second operand 143 states and 12666 transitions. [2023-08-30 13:40:51,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 1300 transitions, 13132 flow [2023-08-30 13:40:52,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 1300 transitions, 12919 flow, removed 99 selfloop flow, removed 5 redundant places. [2023-08-30 13:40:52,166 INFO L231 Difference]: Finished difference. Result has 365 places, 389 transitions, 5608 flow [2023-08-30 13:40:52,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=143, PETRI_FLOW=5608, PETRI_PLACES=365, PETRI_TRANSITIONS=389} [2023-08-30 13:40:52,167 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 340 predicate places. [2023-08-30 13:40:52,167 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 389 transitions, 5608 flow [2023-08-30 13:40:52,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 81.11764705882354) internal successors, (2758), 34 states have internal predecessors, (2758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:52,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:52,168 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1] [2023-08-30 13:40:52,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 13:40:52,376 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,SelfDestructingSolverStorable11 [2023-08-30 13:40:52,377 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:40:52,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:52,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1662985230, now seen corresponding path program 4 times [2023-08-30 13:40:52,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:52,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755501774] [2023-08-30 13:40:52,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:52,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:53,345 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:53,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:53,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755501774] [2023-08-30 13:40:53,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755501774] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:40:53,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793635845] [2023-08-30 13:40:53,346 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 13:40:53,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:40:53,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:40:53,347 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:40:53,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 13:40:53,465 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 13:40:53,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:40:53,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-30 13:40:53,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:40:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:53,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:40:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:54,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793635845] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:40:54,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:40:54,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 64 [2023-08-30 13:40:54,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407737803] [2023-08-30 13:40:54,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:40:54,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-08-30 13:40:54,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:54,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-08-30 13:40:54,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290 [2023-08-30 13:40:54,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 174 [2023-08-30 13:40:54,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 389 transitions, 5608 flow. Second operand has 66 states, 66 states have (on average 81.06060606060606) internal successors, (5350), 66 states have internal predecessors, (5350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:40:54,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:54,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 174 [2023-08-30 13:40:54,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:41:24,532 INFO L130 PetriNetUnfolder]: 6316/17279 cut-off events. [2023-08-30 13:41:24,532 INFO L131 PetriNetUnfolder]: For 9071210/9071210 co-relation queries the response was YES. [2023-08-30 13:41:24,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88688 conditions, 17279 events. 6316/17279 cut-off events. For 9071210/9071210 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 134666 event pairs, 835 based on Foata normal form. 2112/19391 useless extension candidates. Maximal degree in co-relation 88521. Up to 3793 conditions per place. [2023-08-30 13:41:24,812 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 3573 selfloop transitions, 1493 changer transitions 0/5067 dead transitions. [2023-08-30 13:41:24,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 907 places, 5067 transitions, 64777 flow [2023-08-30 13:41:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 543 states. [2023-08-30 13:41:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2023-08-30 13:41:24,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 48090 transitions. [2023-08-30 13:41:24,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089858385724265 [2023-08-30 13:41:24,861 INFO L72 ComplementDD]: Start complementDD. Operand 543 states and 48090 transitions. [2023-08-30 13:41:24,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 543 states and 48090 transitions. [2023-08-30 13:41:24,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:41:24,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 543 states and 48090 transitions. [2023-08-30 13:41:24,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 544 states, 543 states have (on average 88.56353591160222) internal successors, (48090), 543 states have internal predecessors, (48090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:41:25,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 544 states, 544 states have (on average 174.0) internal successors, (94656), 544 states have internal predecessors, (94656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:41:25,090 INFO L81 ComplementDD]: Finished complementDD. Result has 544 states, 544 states have (on average 174.0) internal successors, (94656), 544 states have internal predecessors, (94656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:41:25,090 INFO L175 Difference]: Start difference. First operand has 365 places, 389 transitions, 5608 flow. Second operand 543 states and 48090 transitions. [2023-08-30 13:41:25,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 907 places, 5067 transitions, 64777 flow [2023-08-30 13:41:34,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 885 places, 5067 transitions, 63982 flow, removed 361 selfloop flow, removed 22 redundant places. [2023-08-30 13:41:34,948 INFO L231 Difference]: Finished difference. Result has 1298 places, 1566 transitions, 28535 flow [2023-08-30 13:41:34,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=5395, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=543, PETRI_FLOW=28535, PETRI_PLACES=1298, PETRI_TRANSITIONS=1566} [2023-08-30 13:41:34,950 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 1273 predicate places. [2023-08-30 13:41:34,950 INFO L495 AbstractCegarLoop]: Abstraction has has 1298 places, 1566 transitions, 28535 flow [2023-08-30 13:41:34,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 81.06060606060606) internal successors, (5350), 66 states have internal predecessors, (5350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:41:34,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:41:34,952 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 1, 1, 1, 1] [2023-08-30 13:41:34,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 13:41:35,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:41:35,153 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:41:35,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:41:35,153 INFO L85 PathProgramCache]: Analyzing trace with hash -553702322, now seen corresponding path program 5 times [2023-08-30 13:41:35,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:41:35,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372793570] [2023-08-30 13:41:35,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:41:35,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:41:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:41:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:41:38,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:41:38,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372793570] [2023-08-30 13:41:38,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372793570] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:41:38,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181280179] [2023-08-30 13:41:38,415 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 13:41:38,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:41:38,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:41:38,418 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:41:38,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 13:41:38,730 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2023-08-30 13:41:38,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:41:38,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-30 13:41:38,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:41:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 1921 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 13:41:39,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:41:39,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181280179] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:41:39,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:41:39,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [63] total 96 [2023-08-30 13:41:39,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012162371] [2023-08-30 13:41:39,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:41:39,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-30 13:41:39,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:41:39,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-30 13:41:39,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1615, Invalid=7505, Unknown=0, NotChecked=0, Total=9120 [2023-08-30 13:41:39,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-30 13:41:39,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1298 places, 1566 transitions, 28535 flow. Second operand has 33 states, 33 states have (on average 89.9090909090909) internal successors, (2967), 33 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:41:39,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:41:39,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-30 13:41:39,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:43:15,203 INFO L130 PetriNetUnfolder]: 42075/101398 cut-off events. [2023-08-30 13:43:15,226 INFO L131 PetriNetUnfolder]: For 65965346/65965346 co-relation queries the response was YES. [2023-08-30 13:43:33,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798932 conditions, 101398 events. 42075/101398 cut-off events. For 65965346/65965346 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 1052040 event pairs, 6401 based on Foata normal form. 156/101488 useless extension candidates. Maximal degree in co-relation 798351. Up to 22438 conditions per place. [2023-08-30 13:43:33,460 INFO L137 encePairwiseOnDemand]: 170/174 looper letters, 7705 selfloop transitions, 40 changer transitions 1/8498 dead transitions. [2023-08-30 13:43:33,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1320 places, 8498 transitions, 170422 flow [2023-08-30 13:43:33,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-30 13:43:33,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-30 13:43:33,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2190 transitions. [2023-08-30 13:43:33,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5472263868065967 [2023-08-30 13:43:33,464 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2190 transitions. [2023-08-30 13:43:33,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2190 transitions. [2023-08-30 13:43:33,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:43:33,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2190 transitions. [2023-08-30 13:43:33,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 95.21739130434783) internal successors, (2190), 23 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:33,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:33,473 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:33,473 INFO L175 Difference]: Start difference. First operand has 1298 places, 1566 transitions, 28535 flow. Second operand 23 states and 2190 transitions. [2023-08-30 13:43:33,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1320 places, 8498 transitions, 170422 flow Killed by 15