./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/stack_longest-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/stack_longest-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 --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 12:45:43,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:45:43,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:45:43,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:45:43,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:45:43,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:45:43,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:45:43,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:45:43,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:45:43,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:45:43,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:45:43,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:45:43,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:45:43,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:45:43,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:45:43,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:45:43,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:45:43,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:45:43,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:45:43,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:45:43,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:45:43,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:45:43,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:45:43,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:45:43,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:45:43,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:45:43,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:45:43,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:45:43,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:45:43,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:45:43,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:45:43,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:45:43,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:45:43,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:45:43,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:45:43,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:45:43,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:45:43,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:45:43,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:45:43,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:45:43,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:45:43,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:45:43,733 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:45:43,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:45:43,734 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:45:43,735 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:45:43,735 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:45:43,736 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:45:43,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:45:43,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:45:43,736 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:45:43,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:45:43,737 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:45:43,738 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:45:43,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:45:43,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:45:43,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:45:43,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:45:43,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:45:43,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:45:43,739 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:45:43,739 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:45:43,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:45:43,739 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:45:43,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:45:43,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:45:43,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:45:43,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:45:43,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:45:43,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:45:43,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:45:43,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:45:43,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:45:43,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:45:43,742 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:45:43,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:45:43,742 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:45:43,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:45:43,742 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:45:43,742 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 12:45:44,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:45:44,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:45:44,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:45:44,095 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:45:44,096 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:45:44,097 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-1.i [2023-08-30 12:45:45,224 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:45:45,470 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:45:45,471 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-1.i [2023-08-30 12:45:45,491 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3140e102/4eb17f24db5043f388f7948224e98997/FLAGd2e54af8b [2023-08-30 12:45:45,511 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3140e102/4eb17f24db5043f388f7948224e98997 [2023-08-30 12:45:45,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:45:45,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:45:45,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:45:45,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:45:45,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:45:45,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:45:45" (1/1) ... [2023-08-30 12:45:45,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3c57d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:45:45, skipping insertion in model container [2023-08-30 12:45:45,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:45:45" (1/1) ... [2023-08-30 12:45:45,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:45:45,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:45:45,987 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-1.i[41530,41543] [2023-08-30 12:45:46,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:45:46,023 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:45:46,055 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-1.i[41530,41543] [2023-08-30 12:45:46,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:45:46,144 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:45:46,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:45:46 WrapperNode [2023-08-30 12:45:46,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:45:46,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:45:46,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:45:46,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:45:46,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:45:46" (1/1) ... [2023-08-30 12:45:46,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:45:46" (1/1) ... [2023-08-30 12:45:46,223 INFO L138 Inliner]: procedures = 277, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 164 [2023-08-30 12:45:46,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:45:46,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:45:46,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:45:46,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:45:46,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:45:46" (1/1) ... [2023-08-30 12:45:46,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:45:46" (1/1) ... [2023-08-30 12:45:46,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:45:46" (1/1) ... [2023-08-30 12:45:46,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:45:46" (1/1) ... [2023-08-30 12:45:46,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:45:46" (1/1) ... [2023-08-30 12:45:46,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:45:46" (1/1) ... [2023-08-30 12:45:46,271 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:45:46" (1/1) ... [2023-08-30 12:45:46,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:45:46" (1/1) ... [2023-08-30 12:45:46,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:45:46,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:45:46,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:45:46,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:45:46,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:45:46" (1/1) ... [2023-08-30 12:45:46,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:45:46,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:45:46,314 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 12:45:46,327 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 12:45:46,356 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 12:45:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 12:45:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 12:45:46,357 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 12:45:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:45:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:45:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:45:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:45:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 12:45:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:45:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:45:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:45:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:45:46,360 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 12:45:46,556 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:45:46,558 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:45:46,831 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:45:46,838 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:45:46,841 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 12:45:46,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:45:46 BoogieIcfgContainer [2023-08-30 12:45:46,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:45:46,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:45:46,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:45:46,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:45:46,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:45:45" (1/3) ... [2023-08-30 12:45:46,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c018a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:45:46, skipping insertion in model container [2023-08-30 12:45:46,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:45:46" (2/3) ... [2023-08-30 12:45:46,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c018a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:45:46, skipping insertion in model container [2023-08-30 12:45:46,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:45:46" (3/3) ... [2023-08-30 12:45:46,853 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2023-08-30 12:45:46,860 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:45:46,868 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:45:46,868 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 12:45:46,868 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:45:46,988 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 12:45:47,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 172 transitions, 360 flow [2023-08-30 12:45:47,114 INFO L130 PetriNetUnfolder]: 10/170 cut-off events. [2023-08-30 12:45:47,114 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:45:47,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 170 events. 10/170 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 451 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 132. Up to 3 conditions per place. [2023-08-30 12:45:47,122 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 172 transitions, 360 flow [2023-08-30 12:45:47,129 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 161 transitions, 331 flow [2023-08-30 12:45:47,132 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:45:47,145 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 161 transitions, 331 flow [2023-08-30 12:45:47,148 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 161 transitions, 331 flow [2023-08-30 12:45:47,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 161 transitions, 331 flow [2023-08-30 12:45:47,207 INFO L130 PetriNetUnfolder]: 10/161 cut-off events. [2023-08-30 12:45:47,208 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:45:47,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 161 events. 10/161 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 374 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 132. Up to 3 conditions per place. [2023-08-30 12:45:47,217 INFO L119 LiptonReduction]: Number of co-enabled transitions 9140 [2023-08-30 12:45:50,827 INFO L134 LiptonReduction]: Checked pairs total: 13267 [2023-08-30 12:45:50,828 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-08-30 12:45:50,840 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:45:50,852 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;@7aaec2e0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:45:50,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 12:45:50,857 INFO L130 PetriNetUnfolder]: 1/19 cut-off events. [2023-08-30 12:45:50,857 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:45:50,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:45:50,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:45:50,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:45:50,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:45:50,863 INFO L85 PathProgramCache]: Analyzing trace with hash -609150059, now seen corresponding path program 1 times [2023-08-30 12:45:50,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:45:50,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783536104] [2023-08-30 12:45:50,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:45:50,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:45:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:45:51,242 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 12:45:51,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:45:51,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783536104] [2023-08-30 12:45:51,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783536104] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:45:51,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:45:51,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:45:51,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321775404] [2023-08-30 12:45:51,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:45:51,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:45:51,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:45:51,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:45:51,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:45:51,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 325 [2023-08-30 12:45:51,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:51,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:45:51,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 325 [2023-08-30 12:45:51,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:45:51,640 INFO L130 PetriNetUnfolder]: 1413/2282 cut-off events. [2023-08-30 12:45:51,641 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-08-30 12:45:51,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4613 conditions, 2282 events. 1413/2282 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10482 event pairs, 412 based on Foata normal form. 0/1579 useless extension candidates. Maximal degree in co-relation 4322. Up to 1406 conditions per place. [2023-08-30 12:45:51,657 INFO L137 encePairwiseOnDemand]: 316/325 looper letters, 65 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-08-30 12:45:51,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 70 transitions, 293 flow [2023-08-30 12:45:51,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:45:51,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:45:51,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 545 transitions. [2023-08-30 12:45:51,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.558974358974359 [2023-08-30 12:45:51,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 545 transitions. [2023-08-30 12:45:51,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 545 transitions. [2023-08-30 12:45:51,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:45:51,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 545 transitions. [2023-08-30 12:45:51,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:51,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:51,691 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:51,693 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 3 states and 545 transitions. [2023-08-30 12:45:51,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 70 transitions, 293 flow [2023-08-30 12:45:51,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 70 transitions, 285 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:45:51,699 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 122 flow [2023-08-30 12:45:51,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-08-30 12:45:51,704 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-30 12:45:51,704 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 122 flow [2023-08-30 12:45:51,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:51,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:45:51,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:45:51,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:45:51,706 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:45:51,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:45:51,707 INFO L85 PathProgramCache]: Analyzing trace with hash 763448863, now seen corresponding path program 1 times [2023-08-30 12:45:51,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:45:51,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655197111] [2023-08-30 12:45:51,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:45:51,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:45:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:45:51,758 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 12:45:51,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:45:51,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655197111] [2023-08-30 12:45:51,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655197111] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:45:51,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:45:51,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:45:51,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78788431] [2023-08-30 12:45:51,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:45:51,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:45:51,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:45:51,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:45:51,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:45:51,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 325 [2023-08-30 12:45:51,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:51,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:45:51,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 325 [2023-08-30 12:45:51,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:45:52,105 INFO L130 PetriNetUnfolder]: 2114/3495 cut-off events. [2023-08-30 12:45:52,106 INFO L131 PetriNetUnfolder]: For 371/371 co-relation queries the response was YES. [2023-08-30 12:45:52,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7679 conditions, 3495 events. 2114/3495 cut-off events. For 371/371 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 18659 event pairs, 994 based on Foata normal form. 0/2829 useless extension candidates. Maximal degree in co-relation 7030. Up to 2132 conditions per place. [2023-08-30 12:45:52,139 INFO L137 encePairwiseOnDemand]: 320/325 looper letters, 74 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-30 12:45:52,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 77 transitions, 371 flow [2023-08-30 12:45:52,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:45:52,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:45:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions. [2023-08-30 12:45:52,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579487179487179 [2023-08-30 12:45:52,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions. [2023-08-30 12:45:52,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions. [2023-08-30 12:45:52,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:45:52,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions. [2023-08-30 12:45:52,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:52,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:52,147 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:52,148 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 122 flow. Second operand 3 states and 544 transitions. [2023-08-30 12:45:52,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 77 transitions, 371 flow [2023-08-30 12:45:52,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 77 transitions, 357 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:45:52,154 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 130 flow [2023-08-30 12:45:52,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2023-08-30 12:45:52,155 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-30 12:45:52,155 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 130 flow [2023-08-30 12:45:52,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:52,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:45:52,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:45:52,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:45:52,156 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:45:52,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:45:52,157 INFO L85 PathProgramCache]: Analyzing trace with hash 755415305, now seen corresponding path program 1 times [2023-08-30 12:45:52,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:45:52,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485409154] [2023-08-30 12:45:52,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:45:52,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:45:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:45:52,237 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 12:45:52,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:45:52,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485409154] [2023-08-30 12:45:52,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485409154] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:45:52,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:45:52,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:45:52,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108712266] [2023-08-30 12:45:52,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:45:52,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:45:52,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:45:52,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:45:52,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:45:52,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 325 [2023-08-30 12:45:52,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:52,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:45:52,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 325 [2023-08-30 12:45:52,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:45:52,725 INFO L130 PetriNetUnfolder]: 3369/5392 cut-off events. [2023-08-30 12:45:52,726 INFO L131 PetriNetUnfolder]: For 697/697 co-relation queries the response was YES. [2023-08-30 12:45:52,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12649 conditions, 5392 events. 3369/5392 cut-off events. For 697/697 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 31003 event pairs, 1475 based on Foata normal form. 0/4482 useless extension candidates. Maximal degree in co-relation 8352. Up to 3297 conditions per place. [2023-08-30 12:45:52,757 INFO L137 encePairwiseOnDemand]: 320/325 looper letters, 76 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-08-30 12:45:52,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 79 transitions, 394 flow [2023-08-30 12:45:52,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:45:52,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:45:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions. [2023-08-30 12:45:52,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579487179487179 [2023-08-30 12:45:52,760 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions. [2023-08-30 12:45:52,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions. [2023-08-30 12:45:52,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:45:52,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions. [2023-08-30 12:45:52,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:52,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:52,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:52,765 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 130 flow. Second operand 3 states and 544 transitions. [2023-08-30 12:45:52,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 79 transitions, 394 flow [2023-08-30 12:45:52,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 79 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:45:52,769 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 144 flow [2023-08-30 12:45:52,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2023-08-30 12:45:52,771 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-30 12:45:52,771 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 144 flow [2023-08-30 12:45:52,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:52,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:45:52,772 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:45:52,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:45:52,773 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:45:52,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:45:52,773 INFO L85 PathProgramCache]: Analyzing trace with hash -705100280, now seen corresponding path program 1 times [2023-08-30 12:45:52,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:45:52,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399066495] [2023-08-30 12:45:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:45:52,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:45:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:45:52,854 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 12:45:52,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:45:52,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399066495] [2023-08-30 12:45:52,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399066495] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:45:52,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:45:52,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:45:52,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100296888] [2023-08-30 12:45:52,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:45:52,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:45:52,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:45:52,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:45:52,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:45:52,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 325 [2023-08-30 12:45:52,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:52,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:45:52,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 325 [2023-08-30 12:45:52,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:45:53,256 INFO L130 PetriNetUnfolder]: 2963/4886 cut-off events. [2023-08-30 12:45:53,257 INFO L131 PetriNetUnfolder]: For 806/806 co-relation queries the response was YES. [2023-08-30 12:45:53,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11542 conditions, 4886 events. 2963/4886 cut-off events. For 806/806 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 28108 event pairs, 551 based on Foata normal form. 0/4314 useless extension candidates. Maximal degree in co-relation 10810. Up to 3994 conditions per place. [2023-08-30 12:45:53,283 INFO L137 encePairwiseOnDemand]: 321/325 looper letters, 60 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2023-08-30 12:45:53,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 65 transitions, 335 flow [2023-08-30 12:45:53,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:45:53,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:45:53,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2023-08-30 12:45:53,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394871794871795 [2023-08-30 12:45:53,286 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2023-08-30 12:45:53,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2023-08-30 12:45:53,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:45:53,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2023-08-30 12:45:53,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:53,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:53,290 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:53,290 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 144 flow. Second operand 3 states and 526 transitions. [2023-08-30 12:45:53,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 65 transitions, 335 flow [2023-08-30 12:45:53,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:45:53,293 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 154 flow [2023-08-30 12:45:53,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-08-30 12:45:53,294 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-30 12:45:53,294 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 154 flow [2023-08-30 12:45:53,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:53,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:45:53,295 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:45:53,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 12:45:53,295 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:45:53,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:45:53,296 INFO L85 PathProgramCache]: Analyzing trace with hash -705100303, now seen corresponding path program 1 times [2023-08-30 12:45:53,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:45:53,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169827287] [2023-08-30 12:45:53,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:45:53,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:45:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:45:53,337 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 12:45:53,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:45:53,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169827287] [2023-08-30 12:45:53,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169827287] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:45:53,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:45:53,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:45:53,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707073396] [2023-08-30 12:45:53,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:45:53,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:45:53,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:45:53,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:45:53,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:45:53,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 325 [2023-08-30 12:45:53,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:53,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:45:53,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 325 [2023-08-30 12:45:53,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:45:53,724 INFO L130 PetriNetUnfolder]: 2775/4598 cut-off events. [2023-08-30 12:45:53,724 INFO L131 PetriNetUnfolder]: For 1776/1776 co-relation queries the response was YES. [2023-08-30 12:45:53,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11280 conditions, 4598 events. 2775/4598 cut-off events. For 1776/1776 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 26337 event pairs, 325 based on Foata normal form. 110/4258 useless extension candidates. Maximal degree in co-relation 10556. Up to 4306 conditions per place. [2023-08-30 12:45:53,752 INFO L137 encePairwiseOnDemand]: 323/325 looper letters, 62 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-08-30 12:45:53,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 339 flow [2023-08-30 12:45:53,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:45:53,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:45:53,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2023-08-30 12:45:53,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5405128205128205 [2023-08-30 12:45:53,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2023-08-30 12:45:53,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2023-08-30 12:45:53,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:45:53,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2023-08-30 12:45:53,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:53,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:53,759 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:53,760 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 154 flow. Second operand 3 states and 527 transitions. [2023-08-30 12:45:53,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 339 flow [2023-08-30 12:45:53,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:45:53,764 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 148 flow [2023-08-30 12:45:53,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-08-30 12:45:53,764 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-30 12:45:53,765 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 148 flow [2023-08-30 12:45:53,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:53,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:45:53,766 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:45:53,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 12:45:53,766 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:45:53,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:45:53,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1791624054, now seen corresponding path program 1 times [2023-08-30 12:45:53,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:45:53,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90787765] [2023-08-30 12:45:53,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:45:53,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:45:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:45:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:45:53,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:45:53,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90787765] [2023-08-30 12:45:53,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90787765] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:45:53,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224790740] [2023-08-30 12:45:53,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:45:53,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:45:53,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:45:53,850 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 12:45:53,861 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 12:45:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:45:53,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:45:53,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:45:54,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:45:54,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:45:54,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:45:54,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224790740] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:45:54,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:45:54,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-30 12:45:54,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004894529] [2023-08-30 12:45:54,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:45:54,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 12:45:54,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:45:54,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 12:45:54,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 12:45:54,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 325 [2023-08-30 12:45:54,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 148 flow. Second operand has 10 states, 10 states have (on average 155.7) internal successors, (1557), 10 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:54,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:45:54,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 325 [2023-08-30 12:45:54,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:45:55,097 INFO L130 PetriNetUnfolder]: 5222/8549 cut-off events. [2023-08-30 12:45:55,097 INFO L131 PetriNetUnfolder]: For 2737/2737 co-relation queries the response was YES. [2023-08-30 12:45:55,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21093 conditions, 8549 events. 5222/8549 cut-off events. For 2737/2737 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 49417 event pairs, 1050 based on Foata normal form. 110/7907 useless extension candidates. Maximal degree in co-relation 20158. Up to 2827 conditions per place. [2023-08-30 12:45:55,144 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 248 selfloop transitions, 42 changer transitions 0/291 dead transitions. [2023-08-30 12:45:55,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 291 transitions, 1546 flow [2023-08-30 12:45:55,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 12:45:55,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 12:45:55,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2709 transitions. [2023-08-30 12:45:55,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209615384615385 [2023-08-30 12:45:55,152 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2709 transitions. [2023-08-30 12:45:55,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2709 transitions. [2023-08-30 12:45:55,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:45:55,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2709 transitions. [2023-08-30 12:45:55,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 169.3125) internal successors, (2709), 16 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:55,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 325.0) internal successors, (5525), 17 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:55,172 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 325.0) internal successors, (5525), 17 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:55,172 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 148 flow. Second operand 16 states and 2709 transitions. [2023-08-30 12:45:55,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 291 transitions, 1546 flow [2023-08-30 12:45:55,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 291 transitions, 1539 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:45:55,182 INFO L231 Difference]: Finished difference. Result has 66 places, 82 transitions, 449 flow [2023-08-30 12:45:55,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=449, PETRI_PLACES=66, PETRI_TRANSITIONS=82} [2023-08-30 12:45:55,184 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-08-30 12:45:55,184 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 82 transitions, 449 flow [2023-08-30 12:45:55,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 155.7) internal successors, (1557), 10 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:55,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:45:55,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:45:55,195 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 12:45:55,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 12:45:55,392 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:45:55,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:45:55,392 INFO L85 PathProgramCache]: Analyzing trace with hash 657361594, now seen corresponding path program 1 times [2023-08-30 12:45:55,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:45:55,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185944381] [2023-08-30 12:45:55,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:45:55,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:45:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:45:55,458 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 12:45:55,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:45:55,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185944381] [2023-08-30 12:45:55,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185944381] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:45:55,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:45:55,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:45:55,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459251899] [2023-08-30 12:45:55,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:45:55,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:45:55,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:45:55,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:45:55,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:45:55,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 325 [2023-08-30 12:45:55,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 82 transitions, 449 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 12:45:55,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:45:55,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 325 [2023-08-30 12:45:55,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:45:55,720 INFO L130 PetriNetUnfolder]: 1681/3028 cut-off events. [2023-08-30 12:45:55,721 INFO L131 PetriNetUnfolder]: For 2727/2727 co-relation queries the response was YES. [2023-08-30 12:45:55,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8789 conditions, 3028 events. 1681/3028 cut-off events. For 2727/2727 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 16659 event pairs, 301 based on Foata normal form. 288/3166 useless extension candidates. Maximal degree in co-relation 8051. Up to 2344 conditions per place. [2023-08-30 12:45:55,737 INFO L137 encePairwiseOnDemand]: 318/325 looper letters, 59 selfloop transitions, 9 changer transitions 0/68 dead transitions. [2023-08-30 12:45:55,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 463 flow [2023-08-30 12:45:55,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:45:55,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:45:55,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-08-30 12:45:55,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282051282051282 [2023-08-30 12:45:55,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-08-30 12:45:55,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-08-30 12:45:55,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:45:55,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-08-30 12:45:55,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:55,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:55,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:55,744 INFO L175 Difference]: Start difference. First operand has 66 places, 82 transitions, 449 flow. Second operand 3 states and 515 transitions. [2023-08-30 12:45:55,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 463 flow [2023-08-30 12:45:55,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 427 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-08-30 12:45:55,767 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 265 flow [2023-08-30 12:45:55,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2023-08-30 12:45:55,768 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2023-08-30 12:45:55,768 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 265 flow [2023-08-30 12:45:55,769 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 12:45:55,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:45:55,769 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:45:55,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 12:45:55,770 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:45:55,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:45:55,770 INFO L85 PathProgramCache]: Analyzing trace with hash -295807627, now seen corresponding path program 1 times [2023-08-30 12:45:55,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:45:55,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498883422] [2023-08-30 12:45:55,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:45:55,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:45:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:45:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:45:55,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:45:55,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498883422] [2023-08-30 12:45:55,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498883422] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:45:55,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123954479] [2023-08-30 12:45:55,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:45:55,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:45:55,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:45:55,858 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:45:55,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 12:45:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:45:55,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 12:45:55,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:45:56,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:45:56,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:45:56,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123954479] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:45:56,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:45:56,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-30 12:45:56,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918350702] [2023-08-30 12:45:56,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:45:56,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:45:56,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:45:56,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:45:56,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:45:56,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 325 [2023-08-30 12:45:56,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 155.2) internal successors, (776), 5 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:56,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:45:56,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 325 [2023-08-30 12:45:56,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:45:56,360 INFO L130 PetriNetUnfolder]: 1723/3178 cut-off events. [2023-08-30 12:45:56,360 INFO L131 PetriNetUnfolder]: For 2212/2212 co-relation queries the response was YES. [2023-08-30 12:45:56,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9131 conditions, 3178 events. 1723/3178 cut-off events. For 2212/2212 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 16868 event pairs, 375 based on Foata normal form. 126/3132 useless extension candidates. Maximal degree in co-relation 8134. Up to 1602 conditions per place. [2023-08-30 12:45:56,377 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 96 selfloop transitions, 18 changer transitions 0/115 dead transitions. [2023-08-30 12:45:56,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 115 transitions, 722 flow [2023-08-30 12:45:56,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:45:56,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:45:56,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1014 transitions. [2023-08-30 12:45:56,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2023-08-30 12:45:56,380 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1014 transitions. [2023-08-30 12:45:56,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1014 transitions. [2023-08-30 12:45:56,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:45:56,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1014 transitions. [2023-08-30 12:45:56,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:56,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:56,386 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:56,387 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 265 flow. Second operand 6 states and 1014 transitions. [2023-08-30 12:45:56,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 115 transitions, 722 flow [2023-08-30 12:45:56,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 115 transitions, 703 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:45:56,394 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 344 flow [2023-08-30 12:45:56,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2023-08-30 12:45:56,395 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-30 12:45:56,395 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 344 flow [2023-08-30 12:45:56,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.2) internal successors, (776), 5 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:56,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:45:56,396 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:45:56,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 12:45:56,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-30 12:45:56,607 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:45:56,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:45:56,608 INFO L85 PathProgramCache]: Analyzing trace with hash 181119708, now seen corresponding path program 1 times [2023-08-30 12:45:56,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:45:56,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421243255] [2023-08-30 12:45:56,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:45:56,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:45:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:45:56,663 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 12:45:56,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:45:56,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421243255] [2023-08-30 12:45:56,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421243255] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:45:56,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:45:56,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:45:56,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856909806] [2023-08-30 12:45:56,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:45:56,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:45:56,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:45:56,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:45:56,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:45:56,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 325 [2023-08-30 12:45:56,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:56,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:45:56,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 325 [2023-08-30 12:45:56,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:45:56,991 INFO L130 PetriNetUnfolder]: 1487/2768 cut-off events. [2023-08-30 12:45:56,991 INFO L131 PetriNetUnfolder]: For 2789/2789 co-relation queries the response was YES. [2023-08-30 12:45:56,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8270 conditions, 2768 events. 1487/2768 cut-off events. For 2789/2789 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 14610 event pairs, 456 based on Foata normal form. 18/2618 useless extension candidates. Maximal degree in co-relation 7536. Up to 2191 conditions per place. [2023-08-30 12:45:57,005 INFO L137 encePairwiseOnDemand]: 320/325 looper letters, 70 selfloop transitions, 4 changer transitions 6/81 dead transitions. [2023-08-30 12:45:57,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 81 transitions, 578 flow [2023-08-30 12:45:57,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:45:57,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:45:57,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 668 transitions. [2023-08-30 12:45:57,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138461538461538 [2023-08-30 12:45:57,008 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 668 transitions. [2023-08-30 12:45:57,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 668 transitions. [2023-08-30 12:45:57,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:45:57,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 668 transitions. [2023-08-30 12:45:57,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:57,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:57,013 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:57,013 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 344 flow. Second operand 4 states and 668 transitions. [2023-08-30 12:45:57,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 81 transitions, 578 flow [2023-08-30 12:45:57,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 567 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-30 12:45:57,020 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 343 flow [2023-08-30 12:45:57,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=63, 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=4, PETRI_FLOW=343, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2023-08-30 12:45:57,021 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-08-30 12:45:57,021 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 343 flow [2023-08-30 12:45:57,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:57,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:45:57,022 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 12:45:57,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 12:45:57,023 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:45:57,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:45:57,023 INFO L85 PathProgramCache]: Analyzing trace with hash 868540394, now seen corresponding path program 1 times [2023-08-30 12:45:57,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:45:57,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299114095] [2023-08-30 12:45:57,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:45:57,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:45:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:45:57,073 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:45:57,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:45:57,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299114095] [2023-08-30 12:45:57,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299114095] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:45:57,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:45:57,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:45:57,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692523877] [2023-08-30 12:45:57,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:45:57,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:45:57,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:45:57,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:45:57,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:45:57,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 325 [2023-08-30 12:45:57,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:57,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:45:57,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 325 [2023-08-30 12:45:57,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:45:57,314 INFO L130 PetriNetUnfolder]: 1346/2491 cut-off events. [2023-08-30 12:45:57,314 INFO L131 PetriNetUnfolder]: For 2591/2595 co-relation queries the response was YES. [2023-08-30 12:45:57,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7593 conditions, 2491 events. 1346/2491 cut-off events. For 2591/2595 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13002 event pairs, 349 based on Foata normal form. 4/2383 useless extension candidates. Maximal degree in co-relation 7096. Up to 2399 conditions per place. [2023-08-30 12:45:57,330 INFO L137 encePairwiseOnDemand]: 323/325 looper letters, 67 selfloop transitions, 1 changer transitions 1/70 dead transitions. [2023-08-30 12:45:57,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 70 transitions, 534 flow [2023-08-30 12:45:57,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:45:57,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:45:57,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-08-30 12:45:57,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2023-08-30 12:45:57,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-08-30 12:45:57,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-08-30 12:45:57,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:45:57,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-08-30 12:45:57,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:57,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:57,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:57,337 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 343 flow. Second operand 3 states and 520 transitions. [2023-08-30 12:45:57,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 70 transitions, 534 flow [2023-08-30 12:45:57,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 531 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:45:57,344 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 337 flow [2023-08-30 12:45:57,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=66, 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=337, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2023-08-30 12:45:57,345 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-08-30 12:45:57,345 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 337 flow [2023-08-30 12:45:57,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:57,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:45:57,346 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 12:45:57,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 12:45:57,346 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:45:57,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:45:57,347 INFO L85 PathProgramCache]: Analyzing trace with hash 868540395, now seen corresponding path program 1 times [2023-08-30 12:45:57,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:45:57,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448029557] [2023-08-30 12:45:57,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:45:57,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:45:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:45:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:45:57,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:45:57,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448029557] [2023-08-30 12:45:57,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448029557] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:45:57,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:45:57,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:45:57,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495195100] [2023-08-30 12:45:57,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:45:57,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:45:57,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:45:57,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:45:57,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:45:57,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 325 [2023-08-30 12:45:57,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:57,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:45:57,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 325 [2023-08-30 12:45:57,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:45:57,647 INFO L130 PetriNetUnfolder]: 1212/2205 cut-off events. [2023-08-30 12:45:57,647 INFO L131 PetriNetUnfolder]: For 2470/2474 co-relation queries the response was YES. [2023-08-30 12:45:57,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6745 conditions, 2205 events. 1212/2205 cut-off events. For 2470/2474 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 10943 event pairs, 543 based on Foata normal form. 4/2153 useless extension candidates. Maximal degree in co-relation 4763. Up to 1177 conditions per place. [2023-08-30 12:45:57,661 INFO L137 encePairwiseOnDemand]: 321/325 looper letters, 63 selfloop transitions, 4 changer transitions 2/70 dead transitions. [2023-08-30 12:45:57,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 70 transitions, 531 flow [2023-08-30 12:45:57,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:45:57,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:45:57,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-08-30 12:45:57,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5302564102564102 [2023-08-30 12:45:57,663 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-08-30 12:45:57,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-08-30 12:45:57,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:45:57,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-08-30 12:45:57,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:57,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:57,667 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:57,668 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 337 flow. Second operand 3 states and 517 transitions. [2023-08-30 12:45:57,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 70 transitions, 531 flow [2023-08-30 12:45:57,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 530 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:45:57,674 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 342 flow [2023-08-30 12:45:57,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2023-08-30 12:45:57,675 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2023-08-30 12:45:57,675 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 342 flow [2023-08-30 12:45:57,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:57,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:45:57,676 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:45:57,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 12:45:57,676 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:45:57,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:45:57,677 INFO L85 PathProgramCache]: Analyzing trace with hash -530979848, now seen corresponding path program 1 times [2023-08-30 12:45:57,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:45:57,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127633091] [2023-08-30 12:45:57,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:45:57,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:45:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:45:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:45:57,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:45:57,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127633091] [2023-08-30 12:45:57,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127633091] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:45:57,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649474467] [2023-08-30 12:45:57,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:45:57,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:45:57,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:45:57,801 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:45:57,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 12:45:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:45:57,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 12:45:57,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:45:57,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 12:45:57,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:45:57,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649474467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:45:57,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:45:57,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-08-30 12:45:57,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070118688] [2023-08-30 12:45:57,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:45:57,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:45:57,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:45:57,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:45:57,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 12:45:58,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 12:45:58,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 342 flow. Second operand has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:58,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:45:58,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 12:45:58,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:45:58,380 INFO L130 PetriNetUnfolder]: 1509/2704 cut-off events. [2023-08-30 12:45:58,380 INFO L131 PetriNetUnfolder]: For 3408/3408 co-relation queries the response was YES. [2023-08-30 12:45:58,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8527 conditions, 2704 events. 1509/2704 cut-off events. For 3408/3408 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13349 event pairs, 351 based on Foata normal form. 34/2670 useless extension candidates. Maximal degree in co-relation 8033. Up to 1364 conditions per place. [2023-08-30 12:45:58,395 INFO L137 encePairwiseOnDemand]: 314/325 looper letters, 95 selfloop transitions, 30 changer transitions 0/126 dead transitions. [2023-08-30 12:45:58,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 126 transitions, 932 flow [2023-08-30 12:45:58,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:45:58,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:45:58,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1136 transitions. [2023-08-30 12:45:58,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49934065934065935 [2023-08-30 12:45:58,398 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1136 transitions. [2023-08-30 12:45:58,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1136 transitions. [2023-08-30 12:45:58,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:45:58,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1136 transitions. [2023-08-30 12:45:58,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:58,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:58,405 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:58,405 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 342 flow. Second operand 7 states and 1136 transitions. [2023-08-30 12:45:58,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 126 transitions, 932 flow [2023-08-30 12:45:58,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 126 transitions, 905 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-30 12:45:58,413 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 567 flow [2023-08-30 12:45:58,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=567, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2023-08-30 12:45:58,414 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2023-08-30 12:45:58,414 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 567 flow [2023-08-30 12:45:58,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:58,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:45:58,415 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:45:58,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 12:45:58,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:45:58,625 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:45:58,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:45:58,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1665666210, now seen corresponding path program 1 times [2023-08-30 12:45:58,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:45:58,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309758777] [2023-08-30 12:45:58,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:45:58,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:45:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:45:58,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:45:58,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:45:58,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309758777] [2023-08-30 12:45:58,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309758777] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:45:58,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755341057] [2023-08-30 12:45:58,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:45:58,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:45:58,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:45:58,731 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:45:58,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 12:45:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:45:58,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 12:45:58,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:45:58,881 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 12:45:58,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:45:58,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755341057] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:45:58,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:45:58,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-08-30 12:45:58,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635845460] [2023-08-30 12:45:58,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:45:58,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:45:58,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:45:58,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:45:58,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 12:45:58,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 12:45:58,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 567 flow. Second operand has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:58,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:45:58,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 12:45:58,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:45:59,322 INFO L130 PetriNetUnfolder]: 2065/3686 cut-off events. [2023-08-30 12:45:59,322 INFO L131 PetriNetUnfolder]: For 6714/6714 co-relation queries the response was YES. [2023-08-30 12:45:59,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11966 conditions, 3686 events. 2065/3686 cut-off events. For 6714/6714 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 18620 event pairs, 573 based on Foata normal form. 80/3674 useless extension candidates. Maximal degree in co-relation 11484. Up to 1752 conditions per place. [2023-08-30 12:45:59,342 INFO L137 encePairwiseOnDemand]: 314/325 looper letters, 121 selfloop transitions, 27 changer transitions 0/149 dead transitions. [2023-08-30 12:45:59,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 149 transitions, 1285 flow [2023-08-30 12:45:59,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:45:59,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:45:59,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1137 transitions. [2023-08-30 12:45:59,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4997802197802198 [2023-08-30 12:45:59,346 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1137 transitions. [2023-08-30 12:45:59,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1137 transitions. [2023-08-30 12:45:59,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:45:59,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1137 transitions. [2023-08-30 12:45:59,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.42857142857142) internal successors, (1137), 7 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:59,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:59,352 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:59,352 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 567 flow. Second operand 7 states and 1137 transitions. [2023-08-30 12:45:59,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 149 transitions, 1285 flow [2023-08-30 12:45:59,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 149 transitions, 1219 flow, removed 33 selfloop flow, removed 0 redundant places. [2023-08-30 12:45:59,365 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 855 flow [2023-08-30 12:45:59,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=855, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2023-08-30 12:45:59,366 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 44 predicate places. [2023-08-30 12:45:59,366 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 855 flow [2023-08-30 12:45:59,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:45:59,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:45:59,366 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-30 12:45:59,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 12:45:59,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:45:59,573 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:45:59,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:45:59,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2011874415, now seen corresponding path program 1 times [2023-08-30 12:45:59,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:45:59,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734020648] [2023-08-30 12:45:59,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:45:59,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:45:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:45:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:45:59,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:45:59,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734020648] [2023-08-30 12:45:59,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734020648] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:45:59,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854826209] [2023-08-30 12:45:59,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:45:59,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:45:59,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:45:59,721 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:45:59,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 12:45:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:45:59,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 12:45:59,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:45:59,886 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:45:59,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:45:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:45:59,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854826209] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:45:59,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:45:59,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 12:45:59,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199627203] [2023-08-30 12:45:59,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:45:59,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 12:45:59,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:45:59,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 12:45:59,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-30 12:46:00,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 325 [2023-08-30 12:46:00,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 855 flow. Second operand has 18 states, 18 states have (on average 156.05555555555554) internal successors, (2809), 18 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:00,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:00,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 325 [2023-08-30 12:46:00,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:00,948 INFO L130 PetriNetUnfolder]: 3297/5908 cut-off events. [2023-08-30 12:46:00,948 INFO L131 PetriNetUnfolder]: For 10916/10916 co-relation queries the response was YES. [2023-08-30 12:46:00,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19632 conditions, 5908 events. 3297/5908 cut-off events. For 10916/10916 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 30118 event pairs, 841 based on Foata normal form. 144/5900 useless extension candidates. Maximal degree in co-relation 18862. Up to 2280 conditions per place. [2023-08-30 12:46:00,990 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 293 selfloop transitions, 41 changer transitions 2/337 dead transitions. [2023-08-30 12:46:00,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 337 transitions, 2647 flow [2023-08-30 12:46:00,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 12:46:00,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 12:46:00,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3168 transitions. [2023-08-30 12:46:00,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130364372469636 [2023-08-30 12:46:00,999 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3168 transitions. [2023-08-30 12:46:00,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3168 transitions. [2023-08-30 12:46:01,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:01,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3168 transitions. [2023-08-30 12:46:01,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 166.73684210526315) internal successors, (3168), 19 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:01,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 325.0) internal successors, (6500), 20 states have internal predecessors, (6500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:01,017 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 325.0) internal successors, (6500), 20 states have internal predecessors, (6500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:01,017 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 855 flow. Second operand 19 states and 3168 transitions. [2023-08-30 12:46:01,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 337 transitions, 2647 flow [2023-08-30 12:46:01,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 337 transitions, 2629 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-30 12:46:01,046 INFO L231 Difference]: Finished difference. Result has 109 places, 108 transitions, 1189 flow [2023-08-30 12:46:01,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1189, PETRI_PLACES=109, PETRI_TRANSITIONS=108} [2023-08-30 12:46:01,047 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2023-08-30 12:46:01,047 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 108 transitions, 1189 flow [2023-08-30 12:46:01,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 156.05555555555554) internal successors, (2809), 18 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:01,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:01,048 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:01,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 12:46:01,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 12:46:01,254 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:01,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:01,254 INFO L85 PathProgramCache]: Analyzing trace with hash -503819008, now seen corresponding path program 2 times [2023-08-30 12:46:01,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:01,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930787973] [2023-08-30 12:46:01,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:01,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 12:46:01,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:01,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930787973] [2023-08-30 12:46:01,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930787973] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:46:01,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042668088] [2023-08-30 12:46:01,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:46:01,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:01,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:46:01,391 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:46:01,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 12:46:01,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:46:01,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:46:01,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 12:46:01,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:46:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 12:46:01,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:46:01,684 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 12:46:01,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042668088] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:46:01,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:46:01,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 12:46:01,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967066897] [2023-08-30 12:46:01,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:46:01,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 12:46:01,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:01,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 12:46:01,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-08-30 12:46:01,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 325 [2023-08-30 12:46:01,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 108 transitions, 1189 flow. Second operand has 16 states, 16 states have (on average 150.625) internal successors, (2410), 16 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:01,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:01,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 325 [2023-08-30 12:46:01,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:02,798 INFO L130 PetriNetUnfolder]: 4341/7764 cut-off events. [2023-08-30 12:46:02,798 INFO L131 PetriNetUnfolder]: For 18872/18872 co-relation queries the response was YES. [2023-08-30 12:46:02,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26411 conditions, 7764 events. 4341/7764 cut-off events. For 18872/18872 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 42233 event pairs, 893 based on Foata normal form. 144/7708 useless extension candidates. Maximal degree in co-relation 25537. Up to 2037 conditions per place. [2023-08-30 12:46:02,833 INFO L137 encePairwiseOnDemand]: 314/325 looper letters, 211 selfloop transitions, 98 changer transitions 2/312 dead transitions. [2023-08-30 12:46:02,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 312 transitions, 2858 flow [2023-08-30 12:46:02,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 12:46:02,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 12:46:02,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3146 transitions. [2023-08-30 12:46:02,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484 [2023-08-30 12:46:02,841 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3146 transitions. [2023-08-30 12:46:02,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3146 transitions. [2023-08-30 12:46:02,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:02,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3146 transitions. [2023-08-30 12:46:02,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 157.3) internal successors, (3146), 20 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:02,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 325.0) internal successors, (6825), 21 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:02,858 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 325.0) internal successors, (6825), 21 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:02,858 INFO L175 Difference]: Start difference. First operand has 109 places, 108 transitions, 1189 flow. Second operand 20 states and 3146 transitions. [2023-08-30 12:46:02,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 312 transitions, 2858 flow [2023-08-30 12:46:02,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 312 transitions, 2747 flow, removed 45 selfloop flow, removed 5 redundant places. [2023-08-30 12:46:02,907 INFO L231 Difference]: Finished difference. Result has 126 places, 144 transitions, 1811 flow [2023-08-30 12:46:02,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1811, PETRI_PLACES=126, PETRI_TRANSITIONS=144} [2023-08-30 12:46:02,907 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 84 predicate places. [2023-08-30 12:46:02,908 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 144 transitions, 1811 flow [2023-08-30 12:46:02,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 150.625) internal successors, (2410), 16 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:02,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:02,909 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:02,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 12:46:03,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 12:46:03,117 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:03,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:03,117 INFO L85 PathProgramCache]: Analyzing trace with hash 164327617, now seen corresponding path program 1 times [2023-08-30 12:46:03,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:03,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255405538] [2023-08-30 12:46:03,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:03,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:03,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:03,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255405538] [2023-08-30 12:46:03,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255405538] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:46:03,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699367840] [2023-08-30 12:46:03,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:03,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:03,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:46:03,293 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:46:03,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 12:46:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:03,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 12:46:03,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:46:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:03,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:46:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:03,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699367840] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:46:03,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:46:03,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-08-30 12:46:03,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683770661] [2023-08-30 12:46:03,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:46:03,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 12:46:03,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:03,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 12:46:03,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-08-30 12:46:03,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 325 [2023-08-30 12:46:03,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 144 transitions, 1811 flow. Second operand has 16 states, 16 states have (on average 151.25) internal successors, (2420), 16 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:03,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:03,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 325 [2023-08-30 12:46:03,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:04,900 INFO L130 PetriNetUnfolder]: 4747/8524 cut-off events. [2023-08-30 12:46:04,900 INFO L131 PetriNetUnfolder]: For 21535/21535 co-relation queries the response was YES. [2023-08-30 12:46:04,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29336 conditions, 8524 events. 4747/8524 cut-off events. For 21535/21535 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 48040 event pairs, 905 based on Foata normal form. 102/8402 useless extension candidates. Maximal degree in co-relation 28468. Up to 4230 conditions per place. [2023-08-30 12:46:04,949 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 166 selfloop transitions, 121 changer transitions 2/290 dead transitions. [2023-08-30 12:46:04,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 290 transitions, 2998 flow [2023-08-30 12:46:04,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 12:46:04,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 12:46:04,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2963 transitions. [2023-08-30 12:46:04,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47983805668016194 [2023-08-30 12:46:04,954 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2963 transitions. [2023-08-30 12:46:04,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2963 transitions. [2023-08-30 12:46:04,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:04,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2963 transitions. [2023-08-30 12:46:04,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 155.94736842105263) internal successors, (2963), 19 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:04,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 325.0) internal successors, (6500), 20 states have internal predecessors, (6500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:04,967 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 325.0) internal successors, (6500), 20 states have internal predecessors, (6500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:04,967 INFO L175 Difference]: Start difference. First operand has 126 places, 144 transitions, 1811 flow. Second operand 19 states and 2963 transitions. [2023-08-30 12:46:04,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 290 transitions, 2998 flow [2023-08-30 12:46:05,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 290 transitions, 2792 flow, removed 71 selfloop flow, removed 5 redundant places. [2023-08-30 12:46:05,045 INFO L231 Difference]: Finished difference. Result has 135 places, 159 transitions, 2008 flow [2023-08-30 12:46:05,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2008, PETRI_PLACES=135, PETRI_TRANSITIONS=159} [2023-08-30 12:46:05,046 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 93 predicate places. [2023-08-30 12:46:05,046 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 159 transitions, 2008 flow [2023-08-30 12:46:05,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 151.25) internal successors, (2420), 16 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:05,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:05,047 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:05,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 12:46:05,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:05,257 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:05,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:05,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1963966512, now seen corresponding path program 1 times [2023-08-30 12:46:05,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:05,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646779443] [2023-08-30 12:46:05,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:05,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:05,554 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:05,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:05,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646779443] [2023-08-30 12:46:05,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646779443] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:46:05,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924803760] [2023-08-30 12:46:05,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:05,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:05,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:46:05,557 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:46:05,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 12:46:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:05,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 12:46:05,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:46:05,756 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:05,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:46:05,889 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:05,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924803760] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:46:05,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:46:05,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2023-08-30 12:46:05,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019944011] [2023-08-30 12:46:05,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:46:05,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 12:46:05,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:05,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 12:46:05,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2023-08-30 12:46:06,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 325 [2023-08-30 12:46:06,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 159 transitions, 2008 flow. Second operand has 21 states, 21 states have (on average 146.95238095238096) internal successors, (3086), 21 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:06,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:06,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 325 [2023-08-30 12:46:06,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:06,953 INFO L130 PetriNetUnfolder]: 4709/8480 cut-off events. [2023-08-30 12:46:06,953 INFO L131 PetriNetUnfolder]: For 19934/19934 co-relation queries the response was YES. [2023-08-30 12:46:06,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29128 conditions, 8480 events. 4709/8480 cut-off events. For 19934/19934 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 48055 event pairs, 933 based on Foata normal form. 42/8298 useless extension candidates. Maximal degree in co-relation 28241. Up to 4602 conditions per place. [2023-08-30 12:46:06,999 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 86 selfloop transitions, 114 changer transitions 15/216 dead transitions. [2023-08-30 12:46:06,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 216 transitions, 2522 flow [2023-08-30 12:46:06,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 12:46:06,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 12:46:07,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1661 transitions. [2023-08-30 12:46:07,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646153846153846 [2023-08-30 12:46:07,001 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1661 transitions. [2023-08-30 12:46:07,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1661 transitions. [2023-08-30 12:46:07,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:07,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1661 transitions. [2023-08-30 12:46:07,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:07,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 325.0) internal successors, (3900), 12 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:07,008 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 325.0) internal successors, (3900), 12 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:07,008 INFO L175 Difference]: Start difference. First operand has 135 places, 159 transitions, 2008 flow. Second operand 11 states and 1661 transitions. [2023-08-30 12:46:07,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 216 transitions, 2522 flow [2023-08-30 12:46:07,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 216 transitions, 2078 flow, removed 86 selfloop flow, removed 13 redundant places. [2023-08-30 12:46:07,077 INFO L231 Difference]: Finished difference. Result has 127 places, 151 transitions, 1643 flow [2023-08-30 12:46:07,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1643, PETRI_PLACES=127, PETRI_TRANSITIONS=151} [2023-08-30 12:46:07,078 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2023-08-30 12:46:07,078 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 151 transitions, 1643 flow [2023-08-30 12:46:07,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 146.95238095238096) internal successors, (3086), 21 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:07,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:07,079 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:07,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 12:46:07,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 12:46:07,285 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:07,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:07,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1500469948, now seen corresponding path program 3 times [2023-08-30 12:46:07,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:07,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774091664] [2023-08-30 12:46:07,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:07,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:46:07,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:07,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774091664] [2023-08-30 12:46:07,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774091664] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:46:07,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702307134] [2023-08-30 12:46:07,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 12:46:07,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:07,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:46:07,508 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:46:07,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 12:46:07,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-30 12:46:07,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:46:07,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 12:46:07,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:46:07,786 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:46:07,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:46:07,902 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:46:07,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702307134] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:46:07,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:46:07,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-30 12:46:07,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049838176] [2023-08-30 12:46:07,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:46:07,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 12:46:07,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:07,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 12:46:07,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-08-30 12:46:08,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 12:46:08,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 151 transitions, 1643 flow. Second operand has 20 states, 20 states have (on average 151.9) internal successors, (3038), 20 states have internal predecessors, (3038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:08,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:08,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 12:46:08,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:09,333 INFO L130 PetriNetUnfolder]: 5496/9773 cut-off events. [2023-08-30 12:46:09,333 INFO L131 PetriNetUnfolder]: For 20138/20138 co-relation queries the response was YES. [2023-08-30 12:46:09,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33090 conditions, 9773 events. 5496/9773 cut-off events. For 20138/20138 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 53426 event pairs, 883 based on Foata normal form. 90/9655 useless extension candidates. Maximal degree in co-relation 32222. Up to 2045 conditions per place. [2023-08-30 12:46:09,373 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 272 selfloop transitions, 166 changer transitions 7/446 dead transitions. [2023-08-30 12:46:09,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 446 transitions, 4204 flow [2023-08-30 12:46:09,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 12:46:09,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 12:46:09,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3797 transitions. [2023-08-30 12:46:09,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867948717948718 [2023-08-30 12:46:09,378 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3797 transitions. [2023-08-30 12:46:09,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3797 transitions. [2023-08-30 12:46:09,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:09,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3797 transitions. [2023-08-30 12:46:09,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 158.20833333333334) internal successors, (3797), 24 states have internal predecessors, (3797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:09,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 325.0) internal successors, (8125), 25 states have internal predecessors, (8125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:09,390 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 325.0) internal successors, (8125), 25 states have internal predecessors, (8125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:09,391 INFO L175 Difference]: Start difference. First operand has 127 places, 151 transitions, 1643 flow. Second operand 24 states and 3797 transitions. [2023-08-30 12:46:09,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 446 transitions, 4204 flow [2023-08-30 12:46:09,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 446 transitions, 3943 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-08-30 12:46:09,457 INFO L231 Difference]: Finished difference. Result has 144 places, 225 transitions, 2701 flow [2023-08-30 12:46:09,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2701, PETRI_PLACES=144, PETRI_TRANSITIONS=225} [2023-08-30 12:46:09,457 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 102 predicate places. [2023-08-30 12:46:09,457 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 225 transitions, 2701 flow [2023-08-30 12:46:09,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 151.9) internal successors, (3038), 20 states have internal predecessors, (3038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:09,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:09,458 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1] [2023-08-30 12:46:09,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 12:46:09,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 12:46:09,669 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:09,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:09,669 INFO L85 PathProgramCache]: Analyzing trace with hash 442284519, now seen corresponding path program 2 times [2023-08-30 12:46:09,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:09,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111032094] [2023-08-30 12:46:09,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:09,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:10,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:10,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111032094] [2023-08-30 12:46:10,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111032094] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:46:10,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056963033] [2023-08-30 12:46:10,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:46:10,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:10,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:46:10,023 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:46:10,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 12:46:10,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:46:10,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:46:10,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 12:46:10,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:46:10,297 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:10,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:46:10,551 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:46:10,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056963033] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:46:10,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:46:10,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-08-30 12:46:10,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873106765] [2023-08-30 12:46:10,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:46:10,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 12:46:10,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:10,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 12:46:10,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-08-30 12:46:10,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 325 [2023-08-30 12:46:10,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 225 transitions, 2701 flow. Second operand has 34 states, 34 states have (on average 156.02941176470588) internal successors, (5305), 34 states have internal predecessors, (5305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:10,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:10,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 325 [2023-08-30 12:46:10,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:13,131 INFO L130 PetriNetUnfolder]: 7580/13517 cut-off events. [2023-08-30 12:46:13,131 INFO L131 PetriNetUnfolder]: For 37872/37872 co-relation queries the response was YES. [2023-08-30 12:46:13,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46887 conditions, 13517 events. 7580/13517 cut-off events. For 37872/37872 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 72591 event pairs, 1885 based on Foata normal form. 168/13397 useless extension candidates. Maximal degree in co-relation 45418. Up to 6177 conditions per place. [2023-08-30 12:46:13,201 INFO L137 encePairwiseOnDemand]: 318/325 looper letters, 583 selfloop transitions, 98 changer transitions 0/682 dead transitions. [2023-08-30 12:46:13,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 682 transitions, 6312 flow [2023-08-30 12:46:13,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-30 12:46:13,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-30 12:46:13,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5489 transitions. [2023-08-30 12:46:13,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117948717948718 [2023-08-30 12:46:13,206 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5489 transitions. [2023-08-30 12:46:13,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5489 transitions. [2023-08-30 12:46:13,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:13,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5489 transitions. [2023-08-30 12:46:13,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 166.33333333333334) internal successors, (5489), 33 states have internal predecessors, (5489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:13,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 325.0) internal successors, (11050), 34 states have internal predecessors, (11050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:13,226 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 325.0) internal successors, (11050), 34 states have internal predecessors, (11050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:13,226 INFO L175 Difference]: Start difference. First operand has 144 places, 225 transitions, 2701 flow. Second operand 33 states and 5489 transitions. [2023-08-30 12:46:13,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 682 transitions, 6312 flow [2023-08-30 12:46:13,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 682 transitions, 6181 flow, removed 37 selfloop flow, removed 7 redundant places. [2023-08-30 12:46:13,350 INFO L231 Difference]: Finished difference. Result has 177 places, 261 transitions, 3354 flow [2023-08-30 12:46:13,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=2576, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3354, PETRI_PLACES=177, PETRI_TRANSITIONS=261} [2023-08-30 12:46:13,351 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 135 predicate places. [2023-08-30 12:46:13,351 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 261 transitions, 3354 flow [2023-08-30 12:46:13,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 156.02941176470588) internal successors, (5305), 34 states have internal predecessors, (5305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:13,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:13,353 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:13,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 12:46:13,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:13,559 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:13,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:13,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1080399752, now seen corresponding path program 4 times [2023-08-30 12:46:13,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:13,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011449397] [2023-08-30 12:46:13,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:13,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:13,995 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:46:13,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:13,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011449397] [2023-08-30 12:46:13,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011449397] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:46:13,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919337642] [2023-08-30 12:46:13,996 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 12:46:13,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:13,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:46:14,001 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:46:14,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 12:46:14,193 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 12:46:14,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:46:14,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 12:46:14,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:46:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:46:14,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:46:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:46:14,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919337642] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:46:14,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:46:14,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2023-08-30 12:46:14,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062205611] [2023-08-30 12:46:14,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:46:14,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-30 12:46:14,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:14,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-30 12:46:14,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2023-08-30 12:46:14,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 12:46:14,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 261 transitions, 3354 flow. Second operand has 28 states, 28 states have (on average 151.64285714285714) internal successors, (4246), 28 states have internal predecessors, (4246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:14,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:14,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 12:46:14,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:17,602 INFO L130 PetriNetUnfolder]: 10380/18473 cut-off events. [2023-08-30 12:46:17,603 INFO L131 PetriNetUnfolder]: For 54270/54270 co-relation queries the response was YES. [2023-08-30 12:46:17,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64274 conditions, 18473 events. 10380/18473 cut-off events. For 54270/54270 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 105620 event pairs, 1355 based on Foata normal form. 160/18241 useless extension candidates. Maximal degree in co-relation 62601. Up to 3845 conditions per place. [2023-08-30 12:46:17,736 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 394 selfloop transitions, 306 changer transitions 10/711 dead transitions. [2023-08-30 12:46:17,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 711 transitions, 7443 flow [2023-08-30 12:46:17,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-30 12:46:17,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-30 12:46:17,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5533 transitions. [2023-08-30 12:46:17,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48641758241758243 [2023-08-30 12:46:17,742 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5533 transitions. [2023-08-30 12:46:17,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5533 transitions. [2023-08-30 12:46:17,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:17,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5533 transitions. [2023-08-30 12:46:17,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 158.0857142857143) internal successors, (5533), 35 states have internal predecessors, (5533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:17,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 325.0) internal successors, (11700), 36 states have internal predecessors, (11700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:17,761 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 325.0) internal successors, (11700), 36 states have internal predecessors, (11700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:17,761 INFO L175 Difference]: Start difference. First operand has 177 places, 261 transitions, 3354 flow. Second operand 35 states and 5533 transitions. [2023-08-30 12:46:17,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 711 transitions, 7443 flow [2023-08-30 12:46:17,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 711 transitions, 7141 flow, removed 90 selfloop flow, removed 11 redundant places. [2023-08-30 12:46:17,926 INFO L231 Difference]: Finished difference. Result has 210 places, 379 transitions, 5379 flow [2023-08-30 12:46:17,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=3063, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5379, PETRI_PLACES=210, PETRI_TRANSITIONS=379} [2023-08-30 12:46:17,927 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 168 predicate places. [2023-08-30 12:46:17,927 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 379 transitions, 5379 flow [2023-08-30 12:46:17,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 151.64285714285714) internal successors, (4246), 28 states have internal predecessors, (4246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:17,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:17,928 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:17,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 12:46:18,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:18,129 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:18,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:18,129 INFO L85 PathProgramCache]: Analyzing trace with hash -252758361, now seen corresponding path program 1 times [2023-08-30 12:46:18,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:18,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736444848] [2023-08-30 12:46:18,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:18,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:18,561 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 12:46:18,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:18,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736444848] [2023-08-30 12:46:18,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736444848] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:46:18,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854173247] [2023-08-30 12:46:18,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:18,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:18,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:46:18,563 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:46:18,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 12:46:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:18,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 12:46:18,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:46:18,859 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:46:18,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:46:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:46:19,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854173247] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:46:19,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:46:19,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 24 [2023-08-30 12:46:19,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491397247] [2023-08-30 12:46:19,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:46:19,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-30 12:46:19,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:19,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-30 12:46:19,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2023-08-30 12:46:19,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 12:46:19,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 379 transitions, 5379 flow. Second operand has 26 states, 26 states have (on average 152.07692307692307) internal successors, (3954), 26 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:19,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:19,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 12:46:19,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:24,387 INFO L130 PetriNetUnfolder]: 17018/30187 cut-off events. [2023-08-30 12:46:24,387 INFO L131 PetriNetUnfolder]: For 102782/102782 co-relation queries the response was YES. [2023-08-30 12:46:24,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106692 conditions, 30187 events. 17018/30187 cut-off events. For 102782/102782 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 194855 event pairs, 2635 based on Foata normal form. 220/29759 useless extension candidates. Maximal degree in co-relation 105083. Up to 6526 conditions per place. [2023-08-30 12:46:24,689 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 460 selfloop transitions, 531 changer transitions 8/1000 dead transitions. [2023-08-30 12:46:24,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 1000 transitions, 13148 flow [2023-08-30 12:46:24,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-30 12:46:24,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-30 12:46:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4917 transitions. [2023-08-30 12:46:24,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880397022332506 [2023-08-30 12:46:24,695 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4917 transitions. [2023-08-30 12:46:24,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4917 transitions. [2023-08-30 12:46:24,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:24,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4917 transitions. [2023-08-30 12:46:24,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 158.61290322580646) internal successors, (4917), 31 states have internal predecessors, (4917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:24,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 325.0) internal successors, (10400), 32 states have internal predecessors, (10400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:24,709 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 325.0) internal successors, (10400), 32 states have internal predecessors, (10400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:24,710 INFO L175 Difference]: Start difference. First operand has 210 places, 379 transitions, 5379 flow. Second operand 31 states and 4917 transitions. [2023-08-30 12:46:24,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 1000 transitions, 13148 flow [2023-08-30 12:46:25,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 1000 transitions, 12709 flow, removed 147 selfloop flow, removed 10 redundant places. [2023-08-30 12:46:25,174 INFO L231 Difference]: Finished difference. Result has 245 places, 693 transitions, 11567 flow [2023-08-30 12:46:25,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=5190, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=11567, PETRI_PLACES=245, PETRI_TRANSITIONS=693} [2023-08-30 12:46:25,174 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 203 predicate places. [2023-08-30 12:46:25,174 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 693 transitions, 11567 flow [2023-08-30 12:46:25,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 152.07692307692307) internal successors, (3954), 26 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:25,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:25,175 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:25,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 12:46:25,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-30 12:46:25,376 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:25,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:25,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1747876112, now seen corresponding path program 5 times [2023-08-30 12:46:25,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:25,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428100859] [2023-08-30 12:46:25,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:25,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:26,157 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:46:26,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:26,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428100859] [2023-08-30 12:46:26,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428100859] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:46:26,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903221201] [2023-08-30 12:46:26,158 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 12:46:26,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:26,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:46:26,159 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:46:26,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 12:46:26,474 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-08-30 12:46:26,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:46:26,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 12:46:26,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:46:26,610 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:46:26,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:46:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:46:27,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903221201] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:46:27,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:46:27,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 42 [2023-08-30 12:46:27,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838040404] [2023-08-30 12:46:27,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:46:27,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-08-30 12:46:27,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:27,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-08-30 12:46:27,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2023-08-30 12:46:27,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 12:46:27,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 693 transitions, 11567 flow. Second operand has 44 states, 44 states have (on average 151.4090909090909) internal successors, (6662), 44 states have internal predecessors, (6662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:27,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:27,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 12:46:27,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:46:38,829 INFO L130 PetriNetUnfolder]: 27676/49013 cut-off events. [2023-08-30 12:46:38,830 INFO L131 PetriNetUnfolder]: For 233918/233918 co-relation queries the response was YES. [2023-08-30 12:46:39,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179312 conditions, 49013 events. 27676/49013 cut-off events. For 233918/233918 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 337681 event pairs, 5077 based on Foata normal form. 294/48247 useless extension candidates. Maximal degree in co-relation 177245. Up to 11330 conditions per place. [2023-08-30 12:46:39,467 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 918 selfloop transitions, 794 changer transitions 12/1725 dead transitions. [2023-08-30 12:46:39,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 1725 transitions, 24841 flow [2023-08-30 12:46:39,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-08-30 12:46:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-08-30 12:46:39,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 8722 transitions. [2023-08-30 12:46:39,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48794405594405593 [2023-08-30 12:46:39,476 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 8722 transitions. [2023-08-30 12:46:39,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 8722 transitions. [2023-08-30 12:46:39,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:46:39,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 8722 transitions. [2023-08-30 12:46:39,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 158.5818181818182) internal successors, (8722), 55 states have internal predecessors, (8722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:39,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 325.0) internal successors, (18200), 56 states have internal predecessors, (18200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:39,501 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 325.0) internal successors, (18200), 56 states have internal predecessors, (18200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:39,501 INFO L175 Difference]: Start difference. First operand has 245 places, 693 transitions, 11567 flow. Second operand 55 states and 8722 transitions. [2023-08-30 12:46:39,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 1725 transitions, 24841 flow [2023-08-30 12:46:41,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 1725 transitions, 24533 flow, removed 113 selfloop flow, removed 5 redundant places. [2023-08-30 12:46:41,236 INFO L231 Difference]: Finished difference. Result has 321 places, 1119 transitions, 21702 flow [2023-08-30 12:46:41,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=11326, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=423, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=21702, PETRI_PLACES=321, PETRI_TRANSITIONS=1119} [2023-08-30 12:46:41,237 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 279 predicate places. [2023-08-30 12:46:41,237 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 1119 transitions, 21702 flow [2023-08-30 12:46:41,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 151.4090909090909) internal successors, (6662), 44 states have internal predecessors, (6662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:41,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:46:41,238 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:46:41,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-30 12:46:41,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-30 12:46:41,444 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:46:41,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:46:41,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1979003691, now seen corresponding path program 2 times [2023-08-30 12:46:41,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:46:41,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922521387] [2023-08-30 12:46:41,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:46:41,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:46:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:46:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:46:42,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:46:42,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922521387] [2023-08-30 12:46:42,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922521387] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:46:42,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063276387] [2023-08-30 12:46:42,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:46:42,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:46:42,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:46:42,146 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:46:42,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 12:46:42,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:46:42,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:46:42,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 12:46:42,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:46:42,543 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:46:42,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:46:42,864 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:46:42,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063276387] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:46:42,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:46:42,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2023-08-30 12:46:42,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581616702] [2023-08-30 12:46:42,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:46:42,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-30 12:46:42,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:46:42,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-30 12:46:42,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1086, Unknown=0, NotChecked=0, Total=1406 [2023-08-30 12:46:43,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 12:46:43,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 1119 transitions, 21702 flow. Second operand has 38 states, 38 states have (on average 151.73684210526315) internal successors, (5766), 38 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:46:43,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:46:43,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 12:46:43,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:05,324 INFO L130 PetriNetUnfolder]: 39670/70239 cut-off events. [2023-08-30 12:47:05,324 INFO L131 PetriNetUnfolder]: For 436720/436720 co-relation queries the response was YES. [2023-08-30 12:47:06,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269809 conditions, 70239 events. 39670/70239 cut-off events. For 436720/436720 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 517061 event pairs, 5411 based on Foata normal form. 404/69111 useless extension candidates. Maximal degree in co-relation 267589. Up to 15029 conditions per place. [2023-08-30 12:47:06,710 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 635 selfloop transitions, 1472 changer transitions 15/2123 dead transitions. [2023-08-30 12:47:06,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 2123 transitions, 38137 flow [2023-08-30 12:47:06,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-30 12:47:06,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-30 12:47:06,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 7575 transitions. [2023-08-30 12:47:06,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855769230769231 [2023-08-30 12:47:06,720 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 7575 transitions. [2023-08-30 12:47:06,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 7575 transitions. [2023-08-30 12:47:06,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:06,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 7575 transitions. [2023-08-30 12:47:06,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 157.8125) internal successors, (7575), 48 states have internal predecessors, (7575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:06,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 325.0) internal successors, (15925), 49 states have internal predecessors, (15925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:06,741 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 325.0) internal successors, (15925), 49 states have internal predecessors, (15925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:06,742 INFO L175 Difference]: Start difference. First operand has 321 places, 1119 transitions, 21702 flow. Second operand 48 states and 7575 transitions. [2023-08-30 12:47:06,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 2123 transitions, 38137 flow [2023-08-30 12:47:11,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 2123 transitions, 36715 flow, removed 319 selfloop flow, removed 13 redundant places. [2023-08-30 12:47:11,629 INFO L231 Difference]: Finished difference. Result has 375 places, 1660 transitions, 35602 flow [2023-08-30 12:47:11,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=20635, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=993, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=35602, PETRI_PLACES=375, PETRI_TRANSITIONS=1660} [2023-08-30 12:47:11,630 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 333 predicate places. [2023-08-30 12:47:11,630 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 1660 transitions, 35602 flow [2023-08-30 12:47:11,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 151.73684210526315) internal successors, (5766), 38 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:11,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:11,631 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:11,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 12:47:11,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:47:11,832 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:47:11,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:11,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1274319561, now seen corresponding path program 3 times [2023-08-30 12:47:11,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:11,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333979440] [2023-08-30 12:47:11,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:11,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:47:12,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:12,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333979440] [2023-08-30 12:47:12,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333979440] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:47:12,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080999793] [2023-08-30 12:47:12,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 12:47:12,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:47:12,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:47:12,341 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:47:12,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 12:47:12,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-08-30 12:47:12,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:47:12,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 12:47:12,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:47:13,056 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:47:13,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:47:13,358 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 12:47:13,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080999793] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:47:13,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:47:13,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2023-08-30 12:47:13,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017625038] [2023-08-30 12:47:13,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:47:13,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-30 12:47:13,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:13,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-30 12:47:13,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1086, Unknown=0, NotChecked=0, Total=1406 [2023-08-30 12:47:13,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 12:47:13,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 1660 transitions, 35602 flow. Second operand has 38 states, 38 states have (on average 151.73684210526315) internal successors, (5766), 38 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:13,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:13,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 12:47:13,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:48:00,287 INFO L130 PetriNetUnfolder]: 62613/110940 cut-off events. [2023-08-30 12:48:00,287 INFO L131 PetriNetUnfolder]: For 749648/749648 co-relation queries the response was YES. [2023-08-30 12:48:02,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439969 conditions, 110940 events. 62613/110940 cut-off events. For 749648/749648 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 872515 event pairs, 9171 based on Foata normal form. 398/108866 useless extension candidates. Maximal degree in co-relation 437677. Up to 23908 conditions per place. [2023-08-30 12:48:02,903 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 820 selfloop transitions, 2380 changer transitions 13/3214 dead transitions. [2023-08-30 12:48:02,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 3214 transitions, 66519 flow [2023-08-30 12:48:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-08-30 12:48:02,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-08-30 12:48:02,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7277 transitions. [2023-08-30 12:48:02,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48675585284280937 [2023-08-30 12:48:02,911 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7277 transitions. [2023-08-30 12:48:02,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7277 transitions. [2023-08-30 12:48:02,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:48:02,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7277 transitions. [2023-08-30 12:48:02,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 158.19565217391303) internal successors, (7277), 46 states have internal predecessors, (7277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:02,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 325.0) internal successors, (15275), 47 states have internal predecessors, (15275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:02,930 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 325.0) internal successors, (15275), 47 states have internal predecessors, (15275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:02,930 INFO L175 Difference]: Start difference. First operand has 375 places, 1660 transitions, 35602 flow. Second operand 46 states and 7277 transitions. [2023-08-30 12:48:02,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 3214 transitions, 66519 flow [2023-08-30 12:48:17,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 3214 transitions, 64609 flow, removed 651 selfloop flow, removed 16 redundant places. [2023-08-30 12:48:17,794 INFO L231 Difference]: Finished difference. Result has 421 places, 2731 transitions, 64382 flow [2023-08-30 12:48:17,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=34356, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1494, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=64382, PETRI_PLACES=421, PETRI_TRANSITIONS=2731} [2023-08-30 12:48:17,796 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 379 predicate places. [2023-08-30 12:48:17,796 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 2731 transitions, 64382 flow [2023-08-30 12:48:17,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 151.73684210526315) internal successors, (5766), 38 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:17,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:48:17,798 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:48:17,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 12:48:18,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:48:18,008 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:48:18,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:48:18,008 INFO L85 PathProgramCache]: Analyzing trace with hash -282197796, now seen corresponding path program 4 times [2023-08-30 12:48:18,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:48:18,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548958415] [2023-08-30 12:48:18,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:48:18,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:48:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:48:18,684 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 417 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 12:48:18,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:48:18,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548958415] [2023-08-30 12:48:18,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548958415] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:48:18,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265332299] [2023-08-30 12:48:18,685 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 12:48:18,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:48:18,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:48:18,686 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:48:18,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 12:48:18,959 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 12:48:18,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:48:18,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 12:48:18,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:48:19,154 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 411 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 12:48:19,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:48:19,504 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 411 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 12:48:19,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265332299] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:48:19,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:48:19,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 38 [2023-08-30 12:48:19,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141277428] [2023-08-30 12:48:19,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:48:19,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-30 12:48:19,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:48:19,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-30 12:48:19,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=1227, Unknown=0, NotChecked=0, Total=1560 [2023-08-30 12:48:19,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 12:48:19,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 2731 transitions, 64382 flow. Second operand has 40 states, 40 states have (on average 151.95) internal successors, (6078), 40 states have internal predecessors, (6078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:48:19,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:48:19,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 12:48:19,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:50:22,540 INFO L130 PetriNetUnfolder]: 108252/191737 cut-off events. [2023-08-30 12:50:22,540 INFO L131 PetriNetUnfolder]: For 1482674/1482674 co-relation queries the response was YES. [2023-08-30 12:50:27,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788014 conditions, 191737 events. 108252/191737 cut-off events. For 1482674/1482674 co-relation queries the response was YES. Maximal size of possible extension queue 1611. Compared 1606156 event pairs, 15125 based on Foata normal form. 562/187943 useless extension candidates. Maximal degree in co-relation 785634. Up to 41487 conditions per place. [2023-08-30 12:50:28,323 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 976 selfloop transitions, 4532 changer transitions 16/5525 dead transitions. [2023-08-30 12:50:28,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 5525 transitions, 130105 flow [2023-08-30 12:50:28,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-30 12:50:28,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-08-30 12:50:28,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8046 transitions. [2023-08-30 12:50:28,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4854298642533937 [2023-08-30 12:50:28,331 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8046 transitions. [2023-08-30 12:50:28,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8046 transitions. [2023-08-30 12:50:28,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:50:28,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8046 transitions. [2023-08-30 12:50:28,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 157.76470588235293) internal successors, (8046), 51 states have internal predecessors, (8046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:50:28,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 325.0) internal successors, (16900), 52 states have internal predecessors, (16900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:50:28,352 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 325.0) internal successors, (16900), 52 states have internal predecessors, (16900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:50:28,352 INFO L175 Difference]: Start difference. First operand has 421 places, 2731 transitions, 64382 flow. Second operand 51 states and 8046 transitions. [2023-08-30 12:50:28,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 5525 transitions, 130105 flow [2023-08-30 12:51:18,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 5525 transitions, 125364 flow, removed 1764 selfloop flow, removed 15 redundant places. [2023-08-30 12:51:18,457 INFO L231 Difference]: Finished difference. Result has 469 places, 5020 transitions, 126312 flow [2023-08-30 12:51:18,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=61499, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2583, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=126312, PETRI_PLACES=469, PETRI_TRANSITIONS=5020} [2023-08-30 12:51:18,460 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 427 predicate places. [2023-08-30 12:51:18,460 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 5020 transitions, 126312 flow [2023-08-30 12:51:18,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 151.95) internal successors, (6078), 40 states have internal predecessors, (6078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:51:18,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:51:18,461 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:51:18,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 12:51:18,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-30 12:51:18,662 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:51:18,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:51:18,662 INFO L85 PathProgramCache]: Analyzing trace with hash 147282630, now seen corresponding path program 6 times [2023-08-30 12:51:18,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:51:18,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126112802] [2023-08-30 12:51:18,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:51:18,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:51:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:51:19,637 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 0 proven. 907 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:51:19,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:51:19,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126112802] [2023-08-30 12:51:19,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126112802] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:51:19,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295010081] [2023-08-30 12:51:19,638 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 12:51:19,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:51:19,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:51:19,641 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:51:19,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 12:51:22,617 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2023-08-30 12:51:22,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:51:22,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-30 12:51:22,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:51:22,796 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 0 proven. 907 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:51:22,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:51:23,541 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 0 proven. 907 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:51:23,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295010081] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:51:23,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:51:23,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 62 [2023-08-30 12:51:23,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709045095] [2023-08-30 12:51:23,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:51:23,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-08-30 12:51:23,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:51:23,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-08-30 12:51:23,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=997, Invalid=3035, Unknown=0, NotChecked=0, Total=4032 [2023-08-30 12:51:23,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 12:51:23,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 5020 transitions, 126312 flow. Second operand has 64 states, 64 states have (on average 151.28125) internal successors, (9682), 64 states have internal predecessors, (9682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:51:23,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:51:23,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 12:51:23,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand