./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.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/goblint-regression/28-race_reach_41-trylock_racefree.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 af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 --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 14:15:32,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:15:32,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:15:32,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:15:32,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:15:32,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:15:32,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:15:32,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:15:32,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:15:32,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:15:32,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:15:32,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:15:32,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:15:32,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:15:32,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:15:32,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:15:32,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:15:32,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:15:32,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:15:32,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:15:32,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:15:32,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:15:32,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:15:32,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:15:32,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:15:32,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:15:32,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:15:32,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:15:32,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:15:32,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:15:32,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:15:32,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:15:32,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:15:32,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:15:32,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:15:32,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:15:32,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:15:32,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:15:32,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:15:32,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:15:32,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:15:32,275 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:15:32,302 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:15:32,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:15:32,303 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:15:32,303 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:15:32,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:15:32,304 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:15:32,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:15:32,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:15:32,305 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:15:32,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:15:32,306 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:15:32,306 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:15:32,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:15:32,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:15:32,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:15:32,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:15:32,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:15:32,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:15:32,308 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:15:32,308 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:15:32,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:15:32,308 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:15:32,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:15:32,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:15:32,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:15:32,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:15:32,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:15:32,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:15:32,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:15:32,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:15:32,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:15:32,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:15:32,311 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:15:32,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:15:32,311 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:15:32,311 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:15:32,311 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:15:32,312 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:15:32,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:15:32,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:15:32,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:15:32,646 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:15:32,646 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:15:32,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i [2023-08-30 14:15:33,797 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:15:34,054 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:15:34,054 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i [2023-08-30 14:15:34,067 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f6fba4e3/c9f9f26dff9f4701a12920142f932317/FLAGa56917196 [2023-08-30 14:15:34,079 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f6fba4e3/c9f9f26dff9f4701a12920142f932317 [2023-08-30 14:15:34,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:15:34,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:15:34,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:15:34,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:15:34,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:15:34,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:15:34" (1/1) ... [2023-08-30 14:15:34,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27406efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:34, skipping insertion in model container [2023-08-30 14:15:34,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:15:34" (1/1) ... [2023-08-30 14:15:34,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:15:34,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:15:34,378 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i[30176,30189] [2023-08-30 14:15:34,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:15:34,415 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:15:34,459 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i[30176,30189] [2023-08-30 14:15:34,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:15:34,529 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:15:34,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:34 WrapperNode [2023-08-30 14:15:34,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:15:34,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:15:34,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:15:34,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:15:34,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:34" (1/1) ... [2023-08-30 14:15:34,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:34" (1/1) ... [2023-08-30 14:15:34,593 INFO L138 Inliner]: procedures = 171, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2023-08-30 14:15:34,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:15:34,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:15:34,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:15:34,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:15:34,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:34" (1/1) ... [2023-08-30 14:15:34,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:34" (1/1) ... [2023-08-30 14:15:34,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:34" (1/1) ... [2023-08-30 14:15:34,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:34" (1/1) ... [2023-08-30 14:15:34,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:34" (1/1) ... [2023-08-30 14:15:34,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:34" (1/1) ... [2023-08-30 14:15:34,637 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:34" (1/1) ... [2023-08-30 14:15:34,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:34" (1/1) ... [2023-08-30 14:15:34,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:15:34,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:15:34,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:15:34,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:15:34,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:34" (1/1) ... [2023-08-30 14:15:34,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:15:34,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:15:34,682 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 14:15:34,697 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 14:15:34,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:15:34,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:15:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:15:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:15:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:15:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:15:34,724 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:15:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:15:34,725 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-08-30 14:15:34,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:15:34,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:15:34,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:15:34,726 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 14:15:34,856 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:15:34,858 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:15:35,160 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:15:35,166 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:15:35,167 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-30 14:15:35,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:15:35 BoogieIcfgContainer [2023-08-30 14:15:35,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:15:35,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:15:35,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:15:35,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:15:35,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:15:34" (1/3) ... [2023-08-30 14:15:35,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f11b211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:15:35, skipping insertion in model container [2023-08-30 14:15:35,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:34" (2/3) ... [2023-08-30 14:15:35,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f11b211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:15:35, skipping insertion in model container [2023-08-30 14:15:35,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:15:35" (3/3) ... [2023-08-30 14:15:35,175 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2023-08-30 14:15:35,182 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:15:35,190 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:15:35,191 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 14:15:35,191 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:15:35,251 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:15:35,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 118 transitions, 244 flow [2023-08-30 14:15:35,384 INFO L130 PetriNetUnfolder]: 21/154 cut-off events. [2023-08-30 14:15:35,385 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:15:35,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 154 events. 21/154 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 374 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 81. Up to 6 conditions per place. [2023-08-30 14:15:35,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 118 transitions, 244 flow [2023-08-30 14:15:35,395 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 115 transitions, 238 flow [2023-08-30 14:15:35,398 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:15:35,409 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 115 transitions, 238 flow [2023-08-30 14:15:35,411 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 115 transitions, 238 flow [2023-08-30 14:15:35,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 115 transitions, 238 flow [2023-08-30 14:15:35,436 INFO L130 PetriNetUnfolder]: 20/151 cut-off events. [2023-08-30 14:15:35,436 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:15:35,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 151 events. 20/151 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 370 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 81. Up to 6 conditions per place. [2023-08-30 14:15:35,440 INFO L119 LiptonReduction]: Number of co-enabled transitions 3312 [2023-08-30 14:15:37,790 INFO L134 LiptonReduction]: Checked pairs total: 5016 [2023-08-30 14:15:37,790 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-30 14:15:37,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:15:37,807 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;@43e619b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:15:37,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 14:15:37,811 INFO L130 PetriNetUnfolder]: 1/9 cut-off events. [2023-08-30 14:15:37,812 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:15:37,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:37,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:15:37,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:15:37,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:37,817 INFO L85 PathProgramCache]: Analyzing trace with hash 14147023, now seen corresponding path program 1 times [2023-08-30 14:15:37,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:37,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568230687] [2023-08-30 14:15:37,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:37,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:38,034 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 14:15:38,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:38,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568230687] [2023-08-30 14:15:38,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568230687] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:38,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:15:38,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:15:38,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772100317] [2023-08-30 14:15:38,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:38,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:15:38,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:38,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:15:38,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:15:38,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 215 [2023-08-30 14:15:38,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 40 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 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 14:15:38,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:38,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 215 [2023-08-30 14:15:38,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:38,235 INFO L130 PetriNetUnfolder]: 121/270 cut-off events. [2023-08-30 14:15:38,236 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:15:38,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 270 events. 121/270 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1172 event pairs, 0 based on Foata normal form. 10/213 useless extension candidates. Maximal degree in co-relation 501. Up to 242 conditions per place. [2023-08-30 14:15:38,239 INFO L137 encePairwiseOnDemand]: 201/215 looper letters, 38 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-30 14:15:38,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 172 flow [2023-08-30 14:15:38,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:15:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:15:38,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2023-08-30 14:15:38,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5503875968992248 [2023-08-30 14:15:38,252 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2023-08-30 14:15:38,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2023-08-30 14:15:38,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:38,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2023-08-30 14:15:38,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 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 14:15:38,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 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 14:15:38,264 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 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 14:15:38,265 INFO L175 Difference]: Start difference. First operand has 34 places, 40 transitions, 88 flow. Second operand 3 states and 355 transitions. [2023-08-30 14:15:38,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 172 flow [2023-08-30 14:15:38,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:15:38,270 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 74 flow [2023-08-30 14:15:38,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-08-30 14:15:38,275 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-30 14:15:38,275 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 74 flow [2023-08-30 14:15:38,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 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 14:15:38,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:38,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:15:38,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:15:38,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:15:38,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:38,277 INFO L85 PathProgramCache]: Analyzing trace with hash 710381505, now seen corresponding path program 1 times [2023-08-30 14:15:38,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:38,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91390659] [2023-08-30 14:15:38,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:38,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:38,356 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 14:15:38,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:38,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91390659] [2023-08-30 14:15:38,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91390659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:38,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:15:38,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:15:38,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024811253] [2023-08-30 14:15:38,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:38,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:15:38,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:38,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:15:38,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:15:38,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 215 [2023-08-30 14:15:38,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 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 14:15:38,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:38,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 215 [2023-08-30 14:15:38,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:38,433 INFO L130 PetriNetUnfolder]: 101/220 cut-off events. [2023-08-30 14:15:38,434 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:15:38,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 220 events. 101/220 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 772 event pairs, 18 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 454. Up to 164 conditions per place. [2023-08-30 14:15:38,436 INFO L137 encePairwiseOnDemand]: 211/215 looper letters, 33 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-30 14:15:38,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 37 transitions, 165 flow [2023-08-30 14:15:38,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:15:38,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:15:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2023-08-30 14:15:38,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224806201550387 [2023-08-30 14:15:38,439 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2023-08-30 14:15:38,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2023-08-30 14:15:38,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:38,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2023-08-30 14:15:38,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 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 14:15:38,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 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 14:15:38,443 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 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 14:15:38,443 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 74 flow. Second operand 3 states and 337 transitions. [2023-08-30 14:15:38,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 37 transitions, 165 flow [2023-08-30 14:15:38,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 159 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:15:38,445 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 70 flow [2023-08-30 14:15:38,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-08-30 14:15:38,446 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2023-08-30 14:15:38,446 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 70 flow [2023-08-30 14:15:38,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 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 14:15:38,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:38,447 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:15:38,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:15:38,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:15:38,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:38,448 INFO L85 PathProgramCache]: Analyzing trace with hash 710405340, now seen corresponding path program 1 times [2023-08-30 14:15:38,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:38,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339598769] [2023-08-30 14:15:38,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:38,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:15:38,466 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:15:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:15:38,493 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:15:38,494 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:15:38,495 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-08-30 14:15:38,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-30 14:15:38,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-30 14:15:38,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-30 14:15:38,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-30 14:15:38,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-30 14:15:38,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-08-30 14:15:38,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-30 14:15:38,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-30 14:15:38,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-30 14:15:38,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-30 14:15:38,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-30 14:15:38,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-30 14:15:38,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:15:38,502 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-30 14:15:38,504 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:15:38,505 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:15:38,532 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:15:38,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 156 transitions, 330 flow [2023-08-30 14:15:38,573 INFO L130 PetriNetUnfolder]: 37/264 cut-off events. [2023-08-30 14:15:38,574 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:15:38,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 264 events. 37/264 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 784 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 156. Up to 9 conditions per place. [2023-08-30 14:15:38,576 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 156 transitions, 330 flow [2023-08-30 14:15:38,578 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 156 transitions, 330 flow [2023-08-30 14:15:38,578 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:15:38,578 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 156 transitions, 330 flow [2023-08-30 14:15:38,579 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 156 transitions, 330 flow [2023-08-30 14:15:38,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 156 transitions, 330 flow [2023-08-30 14:15:38,600 INFO L130 PetriNetUnfolder]: 37/264 cut-off events. [2023-08-30 14:15:38,600 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:15:38,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 264 events. 37/264 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 784 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 156. Up to 9 conditions per place. [2023-08-30 14:15:38,608 INFO L119 LiptonReduction]: Number of co-enabled transitions 10584 [2023-08-30 14:15:40,884 INFO L134 LiptonReduction]: Checked pairs total: 25256 [2023-08-30 14:15:40,884 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-30 14:15:40,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:15:40,887 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;@43e619b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:15:40,887 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 14:15:40,889 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2023-08-30 14:15:40,890 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:15:40,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:40,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:15:40,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:15:40,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:40,891 INFO L85 PathProgramCache]: Analyzing trace with hash 737315757, now seen corresponding path program 1 times [2023-08-30 14:15:40,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:40,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771615034] [2023-08-30 14:15:40,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:40,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:40,956 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 14:15:40,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:40,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771615034] [2023-08-30 14:15:40,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771615034] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:40,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:15:40,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:15:40,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044881566] [2023-08-30 14:15:40,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:40,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:15:40,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:40,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:15:40,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:15:40,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 275 [2023-08-30 14:15:40,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 68 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 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 14:15:40,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:40,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 275 [2023-08-30 14:15:40,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:41,605 INFO L130 PetriNetUnfolder]: 5379/8576 cut-off events. [2023-08-30 14:15:41,606 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-30 14:15:41,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17086 conditions, 8576 events. 5379/8576 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 53938 event pairs, 2436 based on Foata normal form. 606/6411 useless extension candidates. Maximal degree in co-relation 1962. Up to 8388 conditions per place. [2023-08-30 14:15:41,665 INFO L137 encePairwiseOnDemand]: 256/275 looper letters, 61 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-08-30 14:15:41,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 69 transitions, 282 flow [2023-08-30 14:15:41,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:15:41,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:15:41,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2023-08-30 14:15:41,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5733333333333334 [2023-08-30 14:15:41,668 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2023-08-30 14:15:41,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2023-08-30 14:15:41,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:41,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2023-08-30 14:15:41,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 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 14:15:41,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 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 14:15:41,672 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 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 14:15:41,672 INFO L175 Difference]: Start difference. First operand has 56 places, 68 transitions, 154 flow. Second operand 3 states and 473 transitions. [2023-08-30 14:15:41,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 69 transitions, 282 flow [2023-08-30 14:15:41,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:15:41,675 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 142 flow [2023-08-30 14:15:41,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2023-08-30 14:15:41,676 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-08-30 14:15:41,676 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 142 flow [2023-08-30 14:15:41,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 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 14:15:41,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:41,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:15:41,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:15:41,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:15:41,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:41,677 INFO L85 PathProgramCache]: Analyzing trace with hash -104625308, now seen corresponding path program 1 times [2023-08-30 14:15:41,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:41,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356276099] [2023-08-30 14:15:41,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:41,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:41,712 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 14:15:41,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:41,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356276099] [2023-08-30 14:15:41,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356276099] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:41,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:15:41,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:15:41,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818550248] [2023-08-30 14:15:41,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:41,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:15:41,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:41,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:15:41,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:15:41,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 275 [2023-08-30 14:15:41,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 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 14:15:41,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:41,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 275 [2023-08-30 14:15:41,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:42,308 INFO L130 PetriNetUnfolder]: 4847/7738 cut-off events. [2023-08-30 14:15:42,309 INFO L131 PetriNetUnfolder]: For 490/490 co-relation queries the response was YES. [2023-08-30 14:15:42,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16223 conditions, 7738 events. 4847/7738 cut-off events. For 490/490 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 47326 event pairs, 1638 based on Foata normal form. 0/5607 useless extension candidates. Maximal degree in co-relation 16135. Up to 7004 conditions per place. [2023-08-30 14:15:42,353 INFO L137 encePairwiseOnDemand]: 268/275 looper letters, 69 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2023-08-30 14:15:42,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 78 transitions, 348 flow [2023-08-30 14:15:42,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:15:42,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:15:42,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2023-08-30 14:15:42,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5551515151515152 [2023-08-30 14:15:42,355 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2023-08-30 14:15:42,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2023-08-30 14:15:42,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:42,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2023-08-30 14:15:42,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 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 14:15:42,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 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 14:15:42,359 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 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 14:15:42,359 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 142 flow. Second operand 3 states and 458 transitions. [2023-08-30 14:15:42,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 78 transitions, 348 flow [2023-08-30 14:15:42,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 78 transitions, 345 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:15:42,364 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 165 flow [2023-08-30 14:15:42,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-08-30 14:15:42,366 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2023-08-30 14:15:42,367 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 165 flow [2023-08-30 14:15:42,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 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 14:15:42,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:42,368 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:15:42,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:15:42,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:15:42,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:42,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1786643418, now seen corresponding path program 1 times [2023-08-30 14:15:42,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:42,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900024396] [2023-08-30 14:15:42,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:42,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:42,432 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 14:15:42,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:42,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900024396] [2023-08-30 14:15:42,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900024396] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:42,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:15:42,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:15:42,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512761757] [2023-08-30 14:15:42,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:42,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:15:42,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:42,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:15:42,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:15:42,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 275 [2023-08-30 14:15:42,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 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 14:15:42,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:42,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 275 [2023-08-30 14:15:42,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:42,989 INFO L130 PetriNetUnfolder]: 4496/7133 cut-off events. [2023-08-30 14:15:42,989 INFO L131 PetriNetUnfolder]: For 772/772 co-relation queries the response was YES. [2023-08-30 14:15:42,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15741 conditions, 7133 events. 4496/7133 cut-off events. For 772/772 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 45212 event pairs, 859 based on Foata normal form. 0/5501 useless extension candidates. Maximal degree in co-relation 10327. Up to 5585 conditions per place. [2023-08-30 14:15:43,023 INFO L137 encePairwiseOnDemand]: 271/275 looper letters, 76 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2023-08-30 14:15:43,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 86 transitions, 399 flow [2023-08-30 14:15:43,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:15:43,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:15:43,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2023-08-30 14:15:43,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575757575757576 [2023-08-30 14:15:43,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2023-08-30 14:15:43,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2023-08-30 14:15:43,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:43,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2023-08-30 14:15:43,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:43,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 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 14:15:43,029 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 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 14:15:43,029 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 165 flow. Second operand 3 states and 460 transitions. [2023-08-30 14:15:43,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 86 transitions, 399 flow [2023-08-30 14:15:43,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 86 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:15:43,032 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 174 flow [2023-08-30 14:15:43,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2023-08-30 14:15:43,033 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-08-30 14:15:43,033 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 174 flow [2023-08-30 14:15:43,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 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 14:15:43,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:43,034 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:15:43,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:15:43,034 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:15:43,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:43,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1786643419, now seen corresponding path program 1 times [2023-08-30 14:15:43,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:43,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381681778] [2023-08-30 14:15:43,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:43,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:43,064 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 14:15:43,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:43,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381681778] [2023-08-30 14:15:43,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381681778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:43,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:15:43,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:15:43,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313551152] [2023-08-30 14:15:43,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:43,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:15:43,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:43,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:15:43,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:15:43,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 275 [2023-08-30 14:15:43,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 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 14:15:43,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:43,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 275 [2023-08-30 14:15:43,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:43,528 INFO L130 PetriNetUnfolder]: 4145/6620 cut-off events. [2023-08-30 14:15:43,528 INFO L131 PetriNetUnfolder]: For 2267/2267 co-relation queries the response was YES. [2023-08-30 14:15:43,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14940 conditions, 6620 events. 4145/6620 cut-off events. For 2267/2267 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 38494 event pairs, 3829 based on Foata normal form. 190/5431 useless extension candidates. Maximal degree in co-relation 9760. Up to 6525 conditions per place. [2023-08-30 14:15:43,556 INFO L137 encePairwiseOnDemand]: 273/275 looper letters, 49 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 14:15:43,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 270 flow [2023-08-30 14:15:43,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:15:43,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:15:43,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2023-08-30 14:15:43,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526060606060606 [2023-08-30 14:15:43,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2023-08-30 14:15:43,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2023-08-30 14:15:43,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:43,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2023-08-30 14:15:43,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 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 14:15:43,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 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 14:15:43,562 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 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 14:15:43,562 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 174 flow. Second operand 3 states and 434 transitions. [2023-08-30 14:15:43,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 270 flow [2023-08-30 14:15:43,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 56 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:15:43,564 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 168 flow [2023-08-30 14:15:43,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-08-30 14:15:43,565 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-08-30 14:15:43,565 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 168 flow [2023-08-30 14:15:43,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 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 14:15:43,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:43,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:15:43,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:15:43,566 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:15:43,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:43,566 INFO L85 PathProgramCache]: Analyzing trace with hash 173727105, now seen corresponding path program 1 times [2023-08-30 14:15:43,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:43,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509408611] [2023-08-30 14:15:43,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:43,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:43,616 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 14:15:43,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:43,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509408611] [2023-08-30 14:15:43,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509408611] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:43,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:15:43,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:15:43,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407103528] [2023-08-30 14:15:43,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:43,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:15:43,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:43,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:15:43,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:15:43,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 275 [2023-08-30 14:15:43,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:43,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:43,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 275 [2023-08-30 14:15:43,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:44,460 INFO L130 PetriNetUnfolder]: 5073/8307 cut-off events. [2023-08-30 14:15:44,460 INFO L131 PetriNetUnfolder]: For 1765/1765 co-relation queries the response was YES. [2023-08-30 14:15:44,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18212 conditions, 8307 events. 5073/8307 cut-off events. For 1765/1765 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 51762 event pairs, 812 based on Foata normal form. 0/6777 useless extension candidates. Maximal degree in co-relation 18198. Up to 4555 conditions per place. [2023-08-30 14:15:44,568 INFO L137 encePairwiseOnDemand]: 260/275 looper letters, 164 selfloop transitions, 19 changer transitions 0/189 dead transitions. [2023-08-30 14:15:44,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 189 transitions, 906 flow [2023-08-30 14:15:44,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:15:44,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:15:44,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1051 transitions. [2023-08-30 14:15:44,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.545974025974026 [2023-08-30 14:15:44,571 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1051 transitions. [2023-08-30 14:15:44,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1051 transitions. [2023-08-30 14:15:44,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:44,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1051 transitions. [2023-08-30 14:15:44,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 150.14285714285714) internal successors, (1051), 7 states have internal predecessors, (1051), 0 states have call successors, (0), 0 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 14:15:44,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 275.0) internal successors, (2200), 8 states have internal predecessors, (2200), 0 states have call successors, (0), 0 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 14:15:44,577 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 275.0) internal successors, (2200), 8 states have internal predecessors, (2200), 0 states have call successors, (0), 0 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 14:15:44,577 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 168 flow. Second operand 7 states and 1051 transitions. [2023-08-30 14:15:44,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 189 transitions, 906 flow [2023-08-30 14:15:44,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 189 transitions, 905 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:15:44,581 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 326 flow [2023-08-30 14:15:44,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=326, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2023-08-30 14:15:44,582 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2023-08-30 14:15:44,582 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 326 flow [2023-08-30 14:15:44,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:44,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:44,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:15:44,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:15:44,583 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:15:44,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:44,583 INFO L85 PathProgramCache]: Analyzing trace with hash 173727104, now seen corresponding path program 1 times [2023-08-30 14:15:44,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:44,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822983569] [2023-08-30 14:15:44,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:44,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:44,651 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 14:15:44,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:44,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822983569] [2023-08-30 14:15:44,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822983569] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:44,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:15:44,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:15:44,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384046438] [2023-08-30 14:15:44,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:44,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:15:44,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:44,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:15:44,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:15:44,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 275 [2023-08-30 14:15:44,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 326 flow. Second operand has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:44,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:44,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 275 [2023-08-30 14:15:44,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:45,444 INFO L130 PetriNetUnfolder]: 4782/7989 cut-off events. [2023-08-30 14:15:45,445 INFO L131 PetriNetUnfolder]: For 5773/5773 co-relation queries the response was YES. [2023-08-30 14:15:45,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21418 conditions, 7989 events. 4782/7989 cut-off events. For 5773/5773 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 50810 event pairs, 746 based on Foata normal form. 267/7637 useless extension candidates. Maximal degree in co-relation 21398. Up to 4633 conditions per place. [2023-08-30 14:15:45,484 INFO L137 encePairwiseOnDemand]: 260/275 looper letters, 167 selfloop transitions, 24 changer transitions 0/197 dead transitions. [2023-08-30 14:15:45,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 197 transitions, 1106 flow [2023-08-30 14:15:45,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:15:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:15:45,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1048 transitions. [2023-08-30 14:15:45,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444155844155845 [2023-08-30 14:15:45,487 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1048 transitions. [2023-08-30 14:15:45,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1048 transitions. [2023-08-30 14:15:45,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:45,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1048 transitions. [2023-08-30 14:15:45,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 149.71428571428572) internal successors, (1048), 7 states have internal predecessors, (1048), 0 states have call successors, (0), 0 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 14:15:45,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 275.0) internal successors, (2200), 8 states have internal predecessors, (2200), 0 states have call successors, (0), 0 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 14:15:45,493 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 275.0) internal successors, (2200), 8 states have internal predecessors, (2200), 0 states have call successors, (0), 0 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 14:15:45,493 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 326 flow. Second operand 7 states and 1048 transitions. [2023-08-30 14:15:45,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 197 transitions, 1106 flow [2023-08-30 14:15:45,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 197 transitions, 1098 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 14:15:45,516 INFO L231 Difference]: Finished difference. Result has 81 places, 84 transitions, 512 flow [2023-08-30 14:15:45,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=512, PETRI_PLACES=81, PETRI_TRANSITIONS=84} [2023-08-30 14:15:45,516 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2023-08-30 14:15:45,517 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 84 transitions, 512 flow [2023-08-30 14:15:45,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:15:45,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:45,517 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:15:45,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:15:45,518 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:15:45,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:45,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1022633444, now seen corresponding path program 1 times [2023-08-30 14:15:45,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:45,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192113182] [2023-08-30 14:15:45,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:45,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:15:45,531 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:15:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:15:45,542 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:15:45,543 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:15:45,543 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-30 14:15:45,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-30 14:15:45,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-08-30 14:15:45,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-30 14:15:45,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-30 14:15:45,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-30 14:15:45,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-30 14:15:45,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-30 14:15:45,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-08-30 14:15:45,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-08-30 14:15:45,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-08-30 14:15:45,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-30 14:15:45,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-30 14:15:45,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-30 14:15:45,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-30 14:15:45,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-30 14:15:45,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-30 14:15:45,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:15:45,546 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:15:45,546 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:15:45,546 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:15:45,565 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:15:45,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 194 transitions, 418 flow [2023-08-30 14:15:45,621 INFO L130 PetriNetUnfolder]: 58/413 cut-off events. [2023-08-30 14:15:45,621 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:15:45,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 413 events. 58/413 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1385 event pairs, 1 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 272. Up to 16 conditions per place. [2023-08-30 14:15:45,624 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 194 transitions, 418 flow [2023-08-30 14:15:45,626 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 194 transitions, 418 flow [2023-08-30 14:15:45,627 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:15:45,627 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 194 transitions, 418 flow [2023-08-30 14:15:45,627 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 194 transitions, 418 flow [2023-08-30 14:15:45,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 194 transitions, 418 flow [2023-08-30 14:15:45,667 INFO L130 PetriNetUnfolder]: 58/413 cut-off events. [2023-08-30 14:15:45,668 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:15:45,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 413 events. 58/413 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1385 event pairs, 1 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 272. Up to 16 conditions per place. [2023-08-30 14:15:45,684 INFO L119 LiptonReduction]: Number of co-enabled transitions 20088 [2023-08-30 14:15:48,086 INFO L134 LiptonReduction]: Checked pairs total: 50143 [2023-08-30 14:15:48,087 INFO L136 LiptonReduction]: Total number of compositions: 144 [2023-08-30 14:15:48,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:15:48,089 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;@43e619b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:15:48,089 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 14:15:48,091 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2023-08-30 14:15:48,091 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:15:48,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:48,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:15:48,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:15:48,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:48,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1096106534, now seen corresponding path program 1 times [2023-08-30 14:15:48,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:48,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112004050] [2023-08-30 14:15:48,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:48,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:48,116 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 14:15:48,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:48,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112004050] [2023-08-30 14:15:48,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112004050] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:48,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:15:48,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:15:48,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709979532] [2023-08-30 14:15:48,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:48,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:15:48,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:48,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:15:48,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:15:48,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 338 [2023-08-30 14:15:48,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 91 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 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 14:15:48,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:48,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 338 [2023-08-30 14:15:48,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:55,749 INFO L130 PetriNetUnfolder]: 102458/145569 cut-off events. [2023-08-30 14:15:55,749 INFO L131 PetriNetUnfolder]: For 2273/2273 co-relation queries the response was YES. [2023-08-30 14:15:55,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288245 conditions, 145569 events. 102458/145569 cut-off events. For 2273/2273 co-relation queries the response was YES. Maximal size of possible extension queue 4016. Compared 1092907 event pairs, 64766 based on Foata normal form. 15856/113028 useless extension candidates. Maximal degree in co-relation 24799. Up to 141113 conditions per place. [2023-08-30 14:15:56,716 INFO L137 encePairwiseOnDemand]: 313/338 looper letters, 74 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-30 14:15:56,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 86 transitions, 354 flow [2023-08-30 14:15:56,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:15:56,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:15:56,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 582 transitions. [2023-08-30 14:15:56,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5739644970414202 [2023-08-30 14:15:56,720 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 582 transitions. [2023-08-30 14:15:56,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 582 transitions. [2023-08-30 14:15:56,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:56,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 582 transitions. [2023-08-30 14:15:56,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 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 14:15:56,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 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 14:15:56,724 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 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 14:15:56,724 INFO L175 Difference]: Start difference. First operand has 74 places, 91 transitions, 212 flow. Second operand 3 states and 582 transitions. [2023-08-30 14:15:56,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 86 transitions, 354 flow [2023-08-30 14:15:56,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 86 transitions, 354 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:15:56,727 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 188 flow [2023-08-30 14:15:56,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2023-08-30 14:15:56,729 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2023-08-30 14:15:56,729 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 188 flow [2023-08-30 14:15:56,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 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 14:15:56,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:56,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:15:56,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:15:56,730 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:15:56,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:56,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1097679012, now seen corresponding path program 1 times [2023-08-30 14:15:56,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:56,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535319430] [2023-08-30 14:15:56,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:56,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:56,770 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 14:15:56,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:56,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535319430] [2023-08-30 14:15:56,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535319430] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:56,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:15:56,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:15:56,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444638014] [2023-08-30 14:15:56,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:56,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:15:56,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:56,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:15:56,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:15:56,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 338 [2023-08-30 14:15:56,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 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 14:15:56,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:56,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 338 [2023-08-30 14:15:56,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:03,727 INFO L130 PetriNetUnfolder]: 104847/146744 cut-off events. [2023-08-30 14:16:03,727 INFO L131 PetriNetUnfolder]: For 8072/8072 co-relation queries the response was YES. [2023-08-30 14:16:04,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303900 conditions, 146744 events. 104847/146744 cut-off events. For 8072/8072 co-relation queries the response was YES. Maximal size of possible extension queue 4517. Compared 1077886 event pairs, 46783 based on Foata normal form. 0/102572 useless extension candidates. Maximal degree in co-relation 303811. Up to 141912 conditions per place. [2023-08-30 14:16:04,461 INFO L137 encePairwiseOnDemand]: 328/338 looper letters, 86 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2023-08-30 14:16:04,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 99 transitions, 445 flow [2023-08-30 14:16:04,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:16:04,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:16:04,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2023-08-30 14:16:04,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5542406311637081 [2023-08-30 14:16:04,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2023-08-30 14:16:04,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2023-08-30 14:16:04,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:04,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2023-08-30 14:16:04,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 14:16:04,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 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 14:16:04,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 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 14:16:04,466 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 188 flow. Second operand 3 states and 562 transitions. [2023-08-30 14:16:04,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 99 transitions, 445 flow [2023-08-30 14:16:04,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 99 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:16:04,481 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 222 flow [2023-08-30 14:16:04,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2023-08-30 14:16:04,481 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2023-08-30 14:16:04,481 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 222 flow [2023-08-30 14:16:04,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 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 14:16:04,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:04,482 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:16:04,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:16:04,482 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:16:04,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:04,483 INFO L85 PathProgramCache]: Analyzing trace with hash 909735078, now seen corresponding path program 1 times [2023-08-30 14:16:04,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:04,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647185439] [2023-08-30 14:16:04,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:04,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:04,528 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 14:16:04,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:04,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647185439] [2023-08-30 14:16:04,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647185439] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:04,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:16:04,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:16:04,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556053729] [2023-08-30 14:16:04,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:04,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:16:04,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:04,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:16:04,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:16:04,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 338 [2023-08-30 14:16:04,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 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 14:16:04,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:04,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 338 [2023-08-30 14:16:04,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:11,369 INFO L130 PetriNetUnfolder]: 96058/134273 cut-off events. [2023-08-30 14:16:11,369 INFO L131 PetriNetUnfolder]: For 17465/17746 co-relation queries the response was YES. [2023-08-30 14:16:11,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295886 conditions, 134273 events. 96058/134273 cut-off events. For 17465/17746 co-relation queries the response was YES. Maximal size of possible extension queue 4137. Compared 979305 event pairs, 38466 based on Foata normal form. 0/101343 useless extension candidates. Maximal degree in co-relation 158995. Up to 104456 conditions per place. [2023-08-30 14:16:11,908 INFO L137 encePairwiseOnDemand]: 334/338 looper letters, 100 selfloop transitions, 4 changer transitions 0/115 dead transitions. [2023-08-30 14:16:11,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 115 transitions, 530 flow [2023-08-30 14:16:11,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:16:11,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:16:11,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 574 transitions. [2023-08-30 14:16:11,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5660749506903353 [2023-08-30 14:16:11,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 574 transitions. [2023-08-30 14:16:11,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 574 transitions. [2023-08-30 14:16:11,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:11,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 574 transitions. [2023-08-30 14:16:11,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 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 14:16:11,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 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 14:16:11,913 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 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 14:16:11,913 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 222 flow. Second operand 3 states and 574 transitions. [2023-08-30 14:16:11,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 115 transitions, 530 flow [2023-08-30 14:16:11,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 115 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:16:11,924 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 230 flow [2023-08-30 14:16:11,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2023-08-30 14:16:11,924 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2023-08-30 14:16:11,924 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 230 flow [2023-08-30 14:16:11,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 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 14:16:11,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:11,925 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:16:11,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:16:11,925 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:16:11,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:11,925 INFO L85 PathProgramCache]: Analyzing trace with hash 909735077, now seen corresponding path program 1 times [2023-08-30 14:16:11,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:11,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316200772] [2023-08-30 14:16:11,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:11,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:11,975 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 14:16:11,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:11,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316200772] [2023-08-30 14:16:11,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316200772] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:16:11,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966321421] [2023-08-30 14:16:11,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:11,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:16:11,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:16:11,979 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 14:16:11,984 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 14:16:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:12,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:16:12,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:16:12,124 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 14:16:12,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:16:12,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966321421] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:12,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:16:12,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:16:12,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640236980] [2023-08-30 14:16:12,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:12,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:16:12,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:12,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:16:12,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:16:12,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 338 [2023-08-30 14:16:12,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 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 14:16:12,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:12,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 338 [2023-08-30 14:16:12,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:18,685 INFO L130 PetriNetUnfolder]: 88163/125143 cut-off events. [2023-08-30 14:16:18,686 INFO L131 PetriNetUnfolder]: For 35345/36629 co-relation queries the response was YES. [2023-08-30 14:16:18,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279275 conditions, 125143 events. 88163/125143 cut-off events. For 35345/36629 co-relation queries the response was YES. Maximal size of possible extension queue 3557. Compared 920570 event pairs, 59119 based on Foata normal form. 2732/98410 useless extension candidates. Maximal degree in co-relation 47069. Up to 121643 conditions per place. [2023-08-30 14:16:19,173 INFO L137 encePairwiseOnDemand]: 335/338 looper letters, 72 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-08-30 14:16:19,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 85 transitions, 398 flow [2023-08-30 14:16:19,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:16:19,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:16:19,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 709 transitions. [2023-08-30 14:16:19,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244082840236687 [2023-08-30 14:16:19,175 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 709 transitions. [2023-08-30 14:16:19,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 709 transitions. [2023-08-30 14:16:19,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:19,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 709 transitions. [2023-08-30 14:16:19,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 0 states have call successors, (0), 0 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 14:16:19,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 0 states have call successors, (0), 0 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 14:16:19,179 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 0 states have call successors, (0), 0 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 14:16:19,179 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 230 flow. Second operand 4 states and 709 transitions. [2023-08-30 14:16:19,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 85 transitions, 398 flow [2023-08-30 14:16:19,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 85 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:16:19,187 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 226 flow [2023-08-30 14:16:19,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2023-08-30 14:16:19,187 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 7 predicate places. [2023-08-30 14:16:19,188 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 226 flow [2023-08-30 14:16:19,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 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 14:16:19,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:19,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:16:19,193 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 14:16:19,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 14:16:19,389 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:16:19,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:19,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1460934829, now seen corresponding path program 1 times [2023-08-30 14:16:19,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:19,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922376961] [2023-08-30 14:16:19,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:19,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:16:19,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:19,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922376961] [2023-08-30 14:16:19,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922376961] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:19,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:16:19,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:16:19,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282288005] [2023-08-30 14:16:19,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:19,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:16:19,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:19,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:16:19,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:16:19,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 338 [2023-08-30 14:16:19,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 0 states have call successors, (0), 0 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 14:16:19,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:19,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 338 [2023-08-30 14:16:19,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:28,009 INFO L130 PetriNetUnfolder]: 120303/172593 cut-off events. [2023-08-30 14:16:28,009 INFO L131 PetriNetUnfolder]: For 37192/37708 co-relation queries the response was YES. [2023-08-30 14:16:28,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382416 conditions, 172593 events. 120303/172593 cut-off events. For 37192/37708 co-relation queries the response was YES. Maximal size of possible extension queue 5224. Compared 1332325 event pairs, 26481 based on Foata normal form. 90/138655 useless extension candidates. Maximal degree in co-relation 382315. Up to 102680 conditions per place. [2023-08-30 14:16:28,944 INFO L137 encePairwiseOnDemand]: 318/338 looper letters, 216 selfloop transitions, 29 changer transitions 0/254 dead transitions. [2023-08-30 14:16:28,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 254 transitions, 1245 flow [2023-08-30 14:16:28,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:16:28,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:16:28,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1314 transitions. [2023-08-30 14:16:28,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555367709213863 [2023-08-30 14:16:28,947 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1314 transitions. [2023-08-30 14:16:28,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1314 transitions. [2023-08-30 14:16:28,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:28,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1314 transitions. [2023-08-30 14:16:28,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 187.71428571428572) internal successors, (1314), 7 states have internal predecessors, (1314), 0 states have call successors, (0), 0 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 14:16:28,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 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 14:16:28,954 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 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 14:16:28,954 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 226 flow. Second operand 7 states and 1314 transitions. [2023-08-30 14:16:28,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 254 transitions, 1245 flow [2023-08-30 14:16:28,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 254 transitions, 1239 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:16:28,966 INFO L231 Difference]: Finished difference. Result has 90 places, 99 transitions, 475 flow [2023-08-30 14:16:28,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=475, PETRI_PLACES=90, PETRI_TRANSITIONS=99} [2023-08-30 14:16:28,967 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2023-08-30 14:16:28,967 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 99 transitions, 475 flow [2023-08-30 14:16:28,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 0 states have call successors, (0), 0 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 14:16:28,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:28,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:16:28,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 14:16:28,968 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:16:28,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:28,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1460934830, now seen corresponding path program 1 times [2023-08-30 14:16:28,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:28,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025492092] [2023-08-30 14:16:28,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:28,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:29,010 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 14:16:29,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:29,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025492092] [2023-08-30 14:16:29,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025492092] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:29,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:16:29,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:16:29,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780087613] [2023-08-30 14:16:29,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:29,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:16:29,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:29,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:16:29,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:16:29,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 338 [2023-08-30 14:16:29,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 99 transitions, 475 flow. Second operand has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 0 states have call successors, (0), 0 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 14:16:29,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:29,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 338 [2023-08-30 14:16:29,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:40,304 INFO L130 PetriNetUnfolder]: 125703/184779 cut-off events. [2023-08-30 14:16:40,304 INFO L131 PetriNetUnfolder]: For 161791/163932 co-relation queries the response was YES. [2023-08-30 14:16:40,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499819 conditions, 184779 events. 125703/184779 cut-off events. For 161791/163932 co-relation queries the response was YES. Maximal size of possible extension queue 5763. Compared 1507516 event pairs, 24420 based on Foata normal form. 7181/179892 useless extension candidates. Maximal degree in co-relation 499715. Up to 118200 conditions per place. [2023-08-30 14:16:41,227 INFO L137 encePairwiseOnDemand]: 318/338 looper letters, 236 selfloop transitions, 35 changer transitions 0/280 dead transitions. [2023-08-30 14:16:41,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 280 transitions, 1689 flow [2023-08-30 14:16:41,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:16:41,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:16:41,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1314 transitions. [2023-08-30 14:16:41,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555367709213863 [2023-08-30 14:16:41,231 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1314 transitions. [2023-08-30 14:16:41,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1314 transitions. [2023-08-30 14:16:41,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:41,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1314 transitions. [2023-08-30 14:16:41,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 187.71428571428572) internal successors, (1314), 7 states have internal predecessors, (1314), 0 states have call successors, (0), 0 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 14:16:41,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 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 14:16:41,238 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 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 14:16:41,239 INFO L175 Difference]: Start difference. First operand has 90 places, 99 transitions, 475 flow. Second operand 7 states and 1314 transitions. [2023-08-30 14:16:41,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 280 transitions, 1689 flow [2023-08-30 14:16:41,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 280 transitions, 1683 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:16:41,682 INFO L231 Difference]: Finished difference. Result has 99 places, 125 transitions, 855 flow [2023-08-30 14:16:41,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=855, PETRI_PLACES=99, PETRI_TRANSITIONS=125} [2023-08-30 14:16:41,682 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2023-08-30 14:16:41,683 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 125 transitions, 855 flow [2023-08-30 14:16:41,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 0 states have call successors, (0), 0 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 14:16:41,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:41,683 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 14:16:41,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 14:16:41,684 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:16:41,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:41,684 INFO L85 PathProgramCache]: Analyzing trace with hash 2104224525, now seen corresponding path program 1 times [2023-08-30 14:16:41,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:41,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115885952] [2023-08-30 14:16:41,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:41,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:16:41,696 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:16:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:16:41,707 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:16:41,707 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:16:41,708 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-30 14:16:41,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-30 14:16:41,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-30 14:16:41,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-30 14:16:41,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-30 14:16:41,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-30 14:16:41,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-30 14:16:41,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-30 14:16:41,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-30 14:16:41,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-30 14:16:41,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-30 14:16:41,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-30 14:16:41,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-30 14:16:41,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-30 14:16:41,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-30 14:16:41,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-30 14:16:41,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-30 14:16:41,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-30 14:16:41,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-30 14:16:41,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-30 14:16:41,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-30 14:16:41,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 14:16:41,711 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:16:41,712 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:16:41,712 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 14:16:41,732 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 14:16:41,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 232 transitions, 508 flow [2023-08-30 14:16:41,788 INFO L130 PetriNetUnfolder]: 91/642 cut-off events. [2023-08-30 14:16:41,788 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:16:41,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 642 events. 91/642 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2485 event pairs, 6 based on Foata normal form. 0/497 useless extension candidates. Maximal degree in co-relation 433. Up to 32 conditions per place. [2023-08-30 14:16:41,794 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 232 transitions, 508 flow [2023-08-30 14:16:41,797 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 232 transitions, 508 flow [2023-08-30 14:16:41,797 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:16:41,798 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 232 transitions, 508 flow [2023-08-30 14:16:41,798 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 232 transitions, 508 flow [2023-08-30 14:16:41,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 232 transitions, 508 flow [2023-08-30 14:16:41,849 INFO L130 PetriNetUnfolder]: 91/642 cut-off events. [2023-08-30 14:16:41,849 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:16:41,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 642 events. 91/642 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2485 event pairs, 6 based on Foata normal form. 0/497 useless extension candidates. Maximal degree in co-relation 433. Up to 32 conditions per place. [2023-08-30 14:16:41,866 INFO L119 LiptonReduction]: Number of co-enabled transitions 32400 [2023-08-30 14:16:44,601 INFO L134 LiptonReduction]: Checked pairs total: 97173 [2023-08-30 14:16:44,601 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-08-30 14:16:44,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:16:44,603 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;@43e619b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:16:44,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-30 14:16:44,604 INFO L130 PetriNetUnfolder]: 4/18 cut-off events. [2023-08-30 14:16:44,605 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:16:44,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:44,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:16:44,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:16:44,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:44,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1513141699, now seen corresponding path program 1 times [2023-08-30 14:16:44,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:44,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135891276] [2023-08-30 14:16:44,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:44,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:44,626 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 14:16:44,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:44,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135891276] [2023-08-30 14:16:44,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135891276] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:44,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:16:44,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:16:44,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478715758] [2023-08-30 14:16:44,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:44,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:16:44,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:44,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:16:44,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:16:44,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 399 [2023-08-30 14:16:44,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 116 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 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 14:16:44,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:44,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 399 [2023-08-30 14:16:44,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand