./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 BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/stack_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 BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 04:55:32,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 04:55:32,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 04:55:32,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 04:55:32,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 04:55:32,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 04:55:32,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 04:55:32,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 04:55:32,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 04:55:32,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 04:55:32,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 04:55:32,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 04:55:32,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 04:55:32,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 04:55:32,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 04:55:32,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 04:55:32,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 04:55:32,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 04:55:32,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 04:55:32,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 04:55:32,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 04:55:32,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 04:55:32,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 04:55:32,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 04:55:32,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 04:55:32,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 04:55:32,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 04:55:32,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 04:55:32,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 04:55:32,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 04:55:32,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 04:55:32,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 04:55:32,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 04:55:32,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 04:55:32,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 04:55:32,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 04:55:32,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 04:55:32,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 04:55:32,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 04:55:32,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 04:55:32,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 04:55:32,651 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 04:55:32,682 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 04:55:32,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 04:55:32,683 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 04:55:32,683 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 04:55:32,683 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 04:55:32,684 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 04:55:32,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 04:55:32,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 04:55:32,684 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 04:55:32,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 04:55:32,685 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 04:55:32,685 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 04:55:32,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 04:55:32,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 04:55:32,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 04:55:32,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 04:55:32,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 04:55:32,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 04:55:32,686 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 04:55:32,687 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 04:55:32,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 04:55:32,687 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 04:55:32,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 04:55:32,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 04:55:32,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 04:55:32,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 04:55:32,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:55:32,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 04:55:32,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 04:55:32,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 04:55:32,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 04:55:32,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 04:55:32,689 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 04:55:32,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 04:55:32,689 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 04:55:32,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 04:55:32,690 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 04:55:32,690 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 04:55:33,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 04:55:33,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 04:55:33,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 04:55:33,039 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 04:55:33,039 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 04:55:33,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-1.i [2023-09-01 04:55:34,246 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 04:55:34,513 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 04:55:34,521 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-1.i [2023-09-01 04:55:34,535 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/928f8fafb/948a7a17e6df473c80401f132a27edd2/FLAG32b16f12d [2023-09-01 04:55:34,545 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/928f8fafb/948a7a17e6df473c80401f132a27edd2 [2023-09-01 04:55:34,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 04:55:34,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 04:55:34,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 04:55:34,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 04:55:34,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 04:55:34,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:55:34" (1/1) ... [2023-09-01 04:55:34,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f14d5dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:55:34, skipping insertion in model container [2023-09-01 04:55:34,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:55:34" (1/1) ... [2023-09-01 04:55:34,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 04:55:34,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 04:55:35,060 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] [2023-09-01 04:55:35,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:55:35,106 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 04:55:35,147 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] [2023-09-01 04:55:35,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:55:35,243 INFO L208 MainTranslator]: Completed translation [2023-09-01 04:55:35,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:55:35 WrapperNode [2023-09-01 04:55:35,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 04:55:35,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 04:55:35,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 04:55:35,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 04:55:35,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:55:35" (1/1) ... [2023-09-01 04:55:35,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:55:35" (1/1) ... [2023-09-01 04:55:35,320 INFO L138 Inliner]: procedures = 277, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 164 [2023-09-01 04:55:35,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 04:55:35,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 04:55:35,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 04:55:35,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 04:55:35,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:55:35" (1/1) ... [2023-09-01 04:55:35,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:55:35" (1/1) ... [2023-09-01 04:55:35,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:55:35" (1/1) ... [2023-09-01 04:55:35,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:55:35" (1/1) ... [2023-09-01 04:55:35,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:55:35" (1/1) ... [2023-09-01 04:55:35,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:55:35" (1/1) ... [2023-09-01 04:55:35,369 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:55:35" (1/1) ... [2023-09-01 04:55:35,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:55:35" (1/1) ... [2023-09-01 04:55:35,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 04:55:35,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 04:55:35,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 04:55:35,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 04:55:35,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:55:35" (1/1) ... [2023-09-01 04:55:35,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:55:35,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:55:35,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 04:55:35,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 04:55:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-09-01 04:55:35,464 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-09-01 04:55:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-09-01 04:55:35,466 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-09-01 04:55:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 04:55:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 04:55:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 04:55:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 04:55:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 04:55:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 04:55:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 04:55:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 04:55:35,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 04:55:35,469 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 04:55:35,658 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 04:55:35,660 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 04:55:35,928 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 04:55:35,939 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 04:55:35,939 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 04:55:35,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:55:35 BoogieIcfgContainer [2023-09-01 04:55:35,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 04:55:35,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 04:55:35,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 04:55:35,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 04:55:35,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 04:55:34" (1/3) ... [2023-09-01 04:55:35,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb36afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:55:35, skipping insertion in model container [2023-09-01 04:55:35,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:55:35" (2/3) ... [2023-09-01 04:55:35,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb36afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:55:35, skipping insertion in model container [2023-09-01 04:55:35,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:55:35" (3/3) ... [2023-09-01 04:55:35,953 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2023-09-01 04:55:35,961 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 04:55:35,970 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 04:55:35,970 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 04:55:35,971 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 04:55:36,077 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 04:55:36,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 172 transitions, 360 flow [2023-09-01 04:55:36,178 INFO L130 PetriNetUnfolder]: 10/170 cut-off events. [2023-09-01 04:55:36,178 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 04:55:36,190 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. [2023-09-01 04:55:36,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 172 transitions, 360 flow [2023-09-01 04:55:36,195 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 161 transitions, 331 flow [2023-09-01 04:55:36,199 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:55:36,209 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 161 transitions, 331 flow [2023-09-01 04:55:36,211 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 161 transitions, 331 flow [2023-09-01 04:55:36,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 161 transitions, 331 flow [2023-09-01 04:55:36,245 INFO L130 PetriNetUnfolder]: 10/161 cut-off events. [2023-09-01 04:55:36,246 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 04:55:36,248 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. [2023-09-01 04:55:36,252 INFO L119 LiptonReduction]: Number of co-enabled transitions 9140 [2023-09-01 04:55:40,042 INFO L134 LiptonReduction]: Checked pairs total: 13267 [2023-09-01 04:55:40,042 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-09-01 04:55:40,057 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 04:55:40,063 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;@3d284ed2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:55:40,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-09-01 04:55:40,070 INFO L130 PetriNetUnfolder]: 1/19 cut-off events. [2023-09-01 04:55:40,071 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 04:55:40,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:55:40,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:55:40,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:55:40,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:55:40,077 INFO L85 PathProgramCache]: Analyzing trace with hash -609150059, now seen corresponding path program 1 times [2023-09-01 04:55:40,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:55:40,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854217696] [2023-09-01 04:55:40,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:40,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:55:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:40,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:40,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:55:40,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854217696] [2023-09-01 04:55:40,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854217696] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:55:40,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:55:40,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:55:40,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368779813] [2023-09-01 04:55:40,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:55:40,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:55:40,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:55:40,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:55:40,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:55:40,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 325 [2023-09-01 04:55:40,526 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) [2023-09-01 04:55:40,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:55:40,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 325 [2023-09-01 04:55:40,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:55:40,883 INFO L130 PetriNetUnfolder]: 1413/2282 cut-off events. [2023-09-01 04:55:40,883 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-09-01 04:55:40,887 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. [2023-09-01 04:55:40,899 INFO L137 encePairwiseOnDemand]: 316/325 looper letters, 65 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-09-01 04:55:40,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 70 transitions, 293 flow [2023-09-01 04:55:40,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:55:40,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:55:40,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 545 transitions. [2023-09-01 04:55:40,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.558974358974359 [2023-09-01 04:55:40,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 545 transitions. [2023-09-01 04:55:40,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 545 transitions. [2023-09-01 04:55:40,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:55:40,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 545 transitions. [2023-09-01 04:55:40,923 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) [2023-09-01 04:55:40,928 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) [2023-09-01 04:55:40,929 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) [2023-09-01 04:55:40,931 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 3 states and 545 transitions. [2023-09-01 04:55:40,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 70 transitions, 293 flow [2023-09-01 04:55:40,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 70 transitions, 285 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 04:55:40,936 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 122 flow [2023-09-01 04:55:40,938 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} [2023-09-01 04:55:40,941 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-09-01 04:55:40,941 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 122 flow [2023-09-01 04:55:40,941 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) [2023-09-01 04:55:40,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:55:40,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:55:40,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 04:55:40,942 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:55:40,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:55:40,943 INFO L85 PathProgramCache]: Analyzing trace with hash 763448863, now seen corresponding path program 1 times [2023-09-01 04:55:40,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:55:40,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386947611] [2023-09-01 04:55:40,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:40,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:55:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:41,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:55:41,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386947611] [2023-09-01 04:55:41,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386947611] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:55:41,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:55:41,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:55:41,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235581817] [2023-09-01 04:55:41,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:55:41,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:55:41,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:55:41,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:55:41,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:55:41,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 325 [2023-09-01 04:55:41,042 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) [2023-09-01 04:55:41,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:55:41,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 325 [2023-09-01 04:55:41,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:55:41,413 INFO L130 PetriNetUnfolder]: 2114/3495 cut-off events. [2023-09-01 04:55:41,413 INFO L131 PetriNetUnfolder]: For 371/371 co-relation queries the response was YES. [2023-09-01 04:55:41,417 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. [2023-09-01 04:55:41,433 INFO L137 encePairwiseOnDemand]: 320/325 looper letters, 74 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-09-01 04:55:41,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 77 transitions, 371 flow [2023-09-01 04:55:41,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:55:41,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:55:41,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions. [2023-09-01 04:55:41,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579487179487179 [2023-09-01 04:55:41,437 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions. [2023-09-01 04:55:41,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions. [2023-09-01 04:55:41,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:55:41,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions. [2023-09-01 04:55:41,439 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) [2023-09-01 04:55:41,442 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) [2023-09-01 04:55:41,442 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) [2023-09-01 04:55:41,442 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 122 flow. Second operand 3 states and 544 transitions. [2023-09-01 04:55:41,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 77 transitions, 371 flow [2023-09-01 04:55:41,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 77 transitions, 357 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:55:41,451 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 130 flow [2023-09-01 04:55:41,451 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} [2023-09-01 04:55:41,452 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-09-01 04:55:41,452 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 130 flow [2023-09-01 04:55:41,453 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) [2023-09-01 04:55:41,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:55:41,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:55:41,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 04:55:41,454 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:55:41,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:55:41,456 INFO L85 PathProgramCache]: Analyzing trace with hash 755415305, now seen corresponding path program 1 times [2023-09-01 04:55:41,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:55:41,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232186861] [2023-09-01 04:55:41,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:41,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:55:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:41,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:55:41,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232186861] [2023-09-01 04:55:41,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232186861] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:55:41,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:55:41,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:55:41,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51800291] [2023-09-01 04:55:41,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:55:41,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:55:41,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:55:41,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:55:41,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:55:41,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 325 [2023-09-01 04:55:41,557 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) [2023-09-01 04:55:41,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:55:41,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 325 [2023-09-01 04:55:41,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:55:42,083 INFO L130 PetriNetUnfolder]: 3369/5392 cut-off events. [2023-09-01 04:55:42,083 INFO L131 PetriNetUnfolder]: For 697/697 co-relation queries the response was YES. [2023-09-01 04:55:42,089 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. [2023-09-01 04:55:42,115 INFO L137 encePairwiseOnDemand]: 320/325 looper letters, 76 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-09-01 04:55:42,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 79 transitions, 394 flow [2023-09-01 04:55:42,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:55:42,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:55:42,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions. [2023-09-01 04:55:42,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579487179487179 [2023-09-01 04:55:42,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions. [2023-09-01 04:55:42,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions. [2023-09-01 04:55:42,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:55:42,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions. [2023-09-01 04:55:42,135 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) [2023-09-01 04:55:42,137 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) [2023-09-01 04:55:42,138 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) [2023-09-01 04:55:42,138 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 130 flow. Second operand 3 states and 544 transitions. [2023-09-01 04:55:42,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 79 transitions, 394 flow [2023-09-01 04:55:42,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 79 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:55:42,141 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 144 flow [2023-09-01 04:55:42,141 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} [2023-09-01 04:55:42,142 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-09-01 04:55:42,142 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 144 flow [2023-09-01 04:55:42,143 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) [2023-09-01 04:55:42,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:55:42,143 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:55:42,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 04:55:42,144 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:55:42,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:55:42,144 INFO L85 PathProgramCache]: Analyzing trace with hash -705100280, now seen corresponding path program 1 times [2023-09-01 04:55:42,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:55:42,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875285872] [2023-09-01 04:55:42,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:42,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:55:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:55:42,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:55:42,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875285872] [2023-09-01 04:55:42,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875285872] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:55:42,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:55:42,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:55:42,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145965504] [2023-09-01 04:55:42,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:55:42,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:55:42,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:55:42,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:55:42,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:55:42,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 325 [2023-09-01 04:55:42,200 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) [2023-09-01 04:55:42,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:55:42,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 325 [2023-09-01 04:55:42,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:55:42,638 INFO L130 PetriNetUnfolder]: 2963/4886 cut-off events. [2023-09-01 04:55:42,639 INFO L131 PetriNetUnfolder]: For 806/806 co-relation queries the response was YES. [2023-09-01 04:55:42,645 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. [2023-09-01 04:55:42,674 INFO L137 encePairwiseOnDemand]: 321/325 looper letters, 60 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2023-09-01 04:55:42,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 65 transitions, 335 flow [2023-09-01 04:55:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:55:42,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:55:42,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2023-09-01 04:55:42,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394871794871795 [2023-09-01 04:55:42,677 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2023-09-01 04:55:42,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2023-09-01 04:55:42,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:55:42,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2023-09-01 04:55:42,681 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) [2023-09-01 04:55:42,682 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) [2023-09-01 04:55:42,683 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) [2023-09-01 04:55:42,683 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 144 flow. Second operand 3 states and 526 transitions. [2023-09-01 04:55:42,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 65 transitions, 335 flow [2023-09-01 04:55:42,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:55:42,687 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 154 flow [2023-09-01 04:55:42,687 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} [2023-09-01 04:55:42,689 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-09-01 04:55:42,689 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 154 flow [2023-09-01 04:55:42,689 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) [2023-09-01 04:55:42,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:55:42,690 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:55:42,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 04:55:42,690 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:55:42,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:55:42,691 INFO L85 PathProgramCache]: Analyzing trace with hash -705100303, now seen corresponding path program 1 times [2023-09-01 04:55:42,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:55:42,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336882772] [2023-09-01 04:55:42,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:42,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:55:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:42,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:55:42,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336882772] [2023-09-01 04:55:42,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336882772] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:55:42,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:55:42,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:55:42,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832872320] [2023-09-01 04:55:42,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:55:42,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:55:42,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:55:42,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:55:42,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:55:42,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 325 [2023-09-01 04:55:42,760 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) [2023-09-01 04:55:42,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:55:42,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 325 [2023-09-01 04:55:42,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:55:43,132 INFO L130 PetriNetUnfolder]: 2775/4598 cut-off events. [2023-09-01 04:55:43,133 INFO L131 PetriNetUnfolder]: For 1776/1776 co-relation queries the response was YES. [2023-09-01 04:55:43,139 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. [2023-09-01 04:55:43,156 INFO L137 encePairwiseOnDemand]: 323/325 looper letters, 62 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-09-01 04:55:43,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 339 flow [2023-09-01 04:55:43,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:55:43,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:55:43,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2023-09-01 04:55:43,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5405128205128205 [2023-09-01 04:55:43,159 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2023-09-01 04:55:43,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2023-09-01 04:55:43,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:55:43,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2023-09-01 04:55:43,162 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) [2023-09-01 04:55:43,164 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) [2023-09-01 04:55:43,165 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) [2023-09-01 04:55:43,165 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 154 flow. Second operand 3 states and 527 transitions. [2023-09-01 04:55:43,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 339 flow [2023-09-01 04:55:43,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:55:43,170 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 148 flow [2023-09-01 04:55:43,171 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} [2023-09-01 04:55:43,173 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-09-01 04:55:43,173 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 148 flow [2023-09-01 04:55:43,174 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) [2023-09-01 04:55:43,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:55:43,174 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:55:43,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 04:55:43,174 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:55:43,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:55:43,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1791624054, now seen corresponding path program 1 times [2023-09-01 04:55:43,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:55:43,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7870381] [2023-09-01 04:55:43,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:43,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:55:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:43,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:43,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:55:43,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7870381] [2023-09-01 04:55:43,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7870381] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:55:43,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859211610] [2023-09-01 04:55:43,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:43,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:55:43,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:55:43,333 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:55:43,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 04:55:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:43,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:55:43,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:55:43,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:43,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:55:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:43,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859211610] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:55:43,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:55:43,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-09-01 04:55:43,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399162512] [2023-09-01 04:55:43,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:55:43,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:55:43,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:55:43,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:55:43,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:55:43,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 325 [2023-09-01 04:55:43,660 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) [2023-09-01 04:55:43,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:55:43,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 325 [2023-09-01 04:55:43,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:55:44,711 INFO L130 PetriNetUnfolder]: 5222/8549 cut-off events. [2023-09-01 04:55:44,711 INFO L131 PetriNetUnfolder]: For 2737/2737 co-relation queries the response was YES. [2023-09-01 04:55:44,726 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. [2023-09-01 04:55:44,760 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 248 selfloop transitions, 42 changer transitions 0/291 dead transitions. [2023-09-01 04:55:44,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 291 transitions, 1546 flow [2023-09-01 04:55:44,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 04:55:44,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 04:55:44,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2709 transitions. [2023-09-01 04:55:44,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209615384615385 [2023-09-01 04:55:44,767 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2709 transitions. [2023-09-01 04:55:44,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2709 transitions. [2023-09-01 04:55:44,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:55:44,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2709 transitions. [2023-09-01 04:55:44,774 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) [2023-09-01 04:55:44,782 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) [2023-09-01 04:55:44,783 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) [2023-09-01 04:55:44,784 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 148 flow. Second operand 16 states and 2709 transitions. [2023-09-01 04:55:44,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 291 transitions, 1546 flow [2023-09-01 04:55:44,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 291 transitions, 1539 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:55:44,791 INFO L231 Difference]: Finished difference. Result has 66 places, 82 transitions, 449 flow [2023-09-01 04:55:44,792 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} [2023-09-01 04:55:44,793 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-09-01 04:55:44,793 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 82 transitions, 449 flow [2023-09-01 04:55:44,793 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) [2023-09-01 04:55:44,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:55:44,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:55:44,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 04:55:45,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-09-01 04:55:45,001 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:55:45,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:55:45,002 INFO L85 PathProgramCache]: Analyzing trace with hash 657361594, now seen corresponding path program 1 times [2023-09-01 04:55:45,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:55:45,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115123159] [2023-09-01 04:55:45,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:45,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:55:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:45,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:45,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:55:45,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115123159] [2023-09-01 04:55:45,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115123159] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:55:45,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:55:45,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 04:55:45,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315041363] [2023-09-01 04:55:45,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:55:45,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:55:45,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:55:45,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:55:45,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:55:45,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 325 [2023-09-01 04:55:45,085 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) [2023-09-01 04:55:45,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:55:45,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 325 [2023-09-01 04:55:45,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:55:45,359 INFO L130 PetriNetUnfolder]: 1681/3028 cut-off events. [2023-09-01 04:55:45,360 INFO L131 PetriNetUnfolder]: For 2727/2727 co-relation queries the response was YES. [2023-09-01 04:55:45,365 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. [2023-09-01 04:55:45,376 INFO L137 encePairwiseOnDemand]: 318/325 looper letters, 59 selfloop transitions, 9 changer transitions 0/68 dead transitions. [2023-09-01 04:55:45,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 463 flow [2023-09-01 04:55:45,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:55:45,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:55:45,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-09-01 04:55:45,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282051282051282 [2023-09-01 04:55:45,379 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-09-01 04:55:45,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-09-01 04:55:45,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:55:45,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-09-01 04:55:45,380 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) [2023-09-01 04:55:45,382 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) [2023-09-01 04:55:45,383 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) [2023-09-01 04:55:45,383 INFO L175 Difference]: Start difference. First operand has 66 places, 82 transitions, 449 flow. Second operand 3 states and 515 transitions. [2023-09-01 04:55:45,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 463 flow [2023-09-01 04:55:45,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 427 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-09-01 04:55:45,405 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 265 flow [2023-09-01 04:55:45,405 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} [2023-09-01 04:55:45,406 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2023-09-01 04:55:45,406 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 265 flow [2023-09-01 04:55:45,406 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) [2023-09-01 04:55:45,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:55:45,407 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:55:45,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 04:55:45,407 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:55:45,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:55:45,407 INFO L85 PathProgramCache]: Analyzing trace with hash -295807627, now seen corresponding path program 1 times [2023-09-01 04:55:45,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:55:45,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240256248] [2023-09-01 04:55:45,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:45,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:55:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:45,478 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:45,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:55:45,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240256248] [2023-09-01 04:55:45,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240256248] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:55:45,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938626105] [2023-09-01 04:55:45,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:45,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:55:45,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:55:45,480 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:55:45,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 04:55:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:45,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:55:45,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:55:45,630 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:45,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:55:45,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938626105] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:55:45,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:55:45,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-09-01 04:55:45,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218554349] [2023-09-01 04:55:45,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:55:45,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:55:45,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:55:45,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:55:45,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-09-01 04:55:45,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 325 [2023-09-01 04:55:45,663 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) [2023-09-01 04:55:45,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:55:45,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 325 [2023-09-01 04:55:45,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:55:46,046 INFO L130 PetriNetUnfolder]: 1723/3178 cut-off events. [2023-09-01 04:55:46,046 INFO L131 PetriNetUnfolder]: For 2212/2212 co-relation queries the response was YES. [2023-09-01 04:55:46,051 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. [2023-09-01 04:55:46,061 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 96 selfloop transitions, 18 changer transitions 0/115 dead transitions. [2023-09-01 04:55:46,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 115 transitions, 722 flow [2023-09-01 04:55:46,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 04:55:46,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 04:55:46,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1014 transitions. [2023-09-01 04:55:46,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2023-09-01 04:55:46,064 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1014 transitions. [2023-09-01 04:55:46,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1014 transitions. [2023-09-01 04:55:46,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:55:46,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1014 transitions. [2023-09-01 04:55:46,067 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) [2023-09-01 04:55:46,070 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) [2023-09-01 04:55:46,070 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) [2023-09-01 04:55:46,070 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 265 flow. Second operand 6 states and 1014 transitions. [2023-09-01 04:55:46,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 115 transitions, 722 flow [2023-09-01 04:55:46,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 115 transitions, 703 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:55:46,076 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 344 flow [2023-09-01 04:55:46,076 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} [2023-09-01 04:55:46,076 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-09-01 04:55:46,077 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 344 flow [2023-09-01 04:55:46,077 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) [2023-09-01 04:55:46,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:55:46,077 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:55:46,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 04:55:46,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-09-01 04:55:46,284 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:55:46,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:55:46,284 INFO L85 PathProgramCache]: Analyzing trace with hash 181119708, now seen corresponding path program 1 times [2023-09-01 04:55:46,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:55:46,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729988310] [2023-09-01 04:55:46,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:46,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:55:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:46,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:46,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:55:46,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729988310] [2023-09-01 04:55:46,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729988310] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:55:46,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:55:46,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 04:55:46,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773916281] [2023-09-01 04:55:46,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:55:46,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:55:46,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:55:46,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:55:46,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:55:46,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 325 [2023-09-01 04:55:46,360 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) [2023-09-01 04:55:46,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:55:46,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 325 [2023-09-01 04:55:46,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:55:46,653 INFO L130 PetriNetUnfolder]: 1487/2768 cut-off events. [2023-09-01 04:55:46,654 INFO L131 PetriNetUnfolder]: For 2789/2789 co-relation queries the response was YES. [2023-09-01 04:55:46,660 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. [2023-09-01 04:55:46,670 INFO L137 encePairwiseOnDemand]: 320/325 looper letters, 70 selfloop transitions, 4 changer transitions 6/81 dead transitions. [2023-09-01 04:55:46,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 81 transitions, 578 flow [2023-09-01 04:55:46,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 04:55:46,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 04:55:46,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 668 transitions. [2023-09-01 04:55:46,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138461538461538 [2023-09-01 04:55:46,673 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 668 transitions. [2023-09-01 04:55:46,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 668 transitions. [2023-09-01 04:55:46,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:55:46,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 668 transitions. [2023-09-01 04:55:46,675 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) [2023-09-01 04:55:46,677 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) [2023-09-01 04:55:46,678 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) [2023-09-01 04:55:46,678 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 344 flow. Second operand 4 states and 668 transitions. [2023-09-01 04:55:46,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 81 transitions, 578 flow [2023-09-01 04:55:46,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 567 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-09-01 04:55:46,685 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 343 flow [2023-09-01 04:55:46,686 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} [2023-09-01 04:55:46,686 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-09-01 04:55:46,686 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 343 flow [2023-09-01 04:55:46,687 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) [2023-09-01 04:55:46,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:55:46,687 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 04:55:46,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 04:55:46,688 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:55:46,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:55:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash 868540394, now seen corresponding path program 1 times [2023-09-01 04:55:46,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:55:46,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353232239] [2023-09-01 04:55:46,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:46,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:55:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:46,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:46,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:55:46,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353232239] [2023-09-01 04:55:46,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353232239] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:55:46,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:55:46,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:55:46,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309422256] [2023-09-01 04:55:46,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:55:46,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:55:46,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:55:46,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:55:46,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:55:46,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 325 [2023-09-01 04:55:46,746 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) [2023-09-01 04:55:46,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:55:46,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 325 [2023-09-01 04:55:46,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:55:47,010 INFO L130 PetriNetUnfolder]: 1346/2491 cut-off events. [2023-09-01 04:55:47,011 INFO L131 PetriNetUnfolder]: For 2591/2595 co-relation queries the response was YES. [2023-09-01 04:55:47,016 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. [2023-09-01 04:55:47,025 INFO L137 encePairwiseOnDemand]: 323/325 looper letters, 67 selfloop transitions, 1 changer transitions 1/70 dead transitions. [2023-09-01 04:55:47,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 70 transitions, 534 flow [2023-09-01 04:55:47,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:55:47,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:55:47,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-09-01 04:55:47,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2023-09-01 04:55:47,027 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-09-01 04:55:47,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-09-01 04:55:47,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:55:47,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-09-01 04:55:47,029 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) [2023-09-01 04:55:47,031 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) [2023-09-01 04:55:47,031 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) [2023-09-01 04:55:47,031 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 343 flow. Second operand 3 states and 520 transitions. [2023-09-01 04:55:47,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 70 transitions, 534 flow [2023-09-01 04:55:47,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 531 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:55:47,038 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 337 flow [2023-09-01 04:55:47,038 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} [2023-09-01 04:55:47,039 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-09-01 04:55:47,039 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 337 flow [2023-09-01 04:55:47,040 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) [2023-09-01 04:55:47,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:55:47,040 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 04:55:47,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 04:55:47,040 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:55:47,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:55:47,041 INFO L85 PathProgramCache]: Analyzing trace with hash 868540395, now seen corresponding path program 1 times [2023-09-01 04:55:47,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:55:47,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569175608] [2023-09-01 04:55:47,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:47,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:55:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:47,101 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:55:47,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:55:47,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569175608] [2023-09-01 04:55:47,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569175608] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:55:47,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:55:47,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:55:47,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927465817] [2023-09-01 04:55:47,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:55:47,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:55:47,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:55:47,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:55:47,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:55:47,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 325 [2023-09-01 04:55:47,110 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) [2023-09-01 04:55:47,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:55:47,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 325 [2023-09-01 04:55:47,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:55:47,367 INFO L130 PetriNetUnfolder]: 1212/2205 cut-off events. [2023-09-01 04:55:47,367 INFO L131 PetriNetUnfolder]: For 2470/2474 co-relation queries the response was YES. [2023-09-01 04:55:47,373 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. [2023-09-01 04:55:47,381 INFO L137 encePairwiseOnDemand]: 321/325 looper letters, 63 selfloop transitions, 4 changer transitions 2/70 dead transitions. [2023-09-01 04:55:47,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 70 transitions, 531 flow [2023-09-01 04:55:47,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:55:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:55:47,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-09-01 04:55:47,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5302564102564102 [2023-09-01 04:55:47,384 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-09-01 04:55:47,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-09-01 04:55:47,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:55:47,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-09-01 04:55:47,386 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) [2023-09-01 04:55:47,389 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) [2023-09-01 04:55:47,389 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) [2023-09-01 04:55:47,390 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 337 flow. Second operand 3 states and 517 transitions. [2023-09-01 04:55:47,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 70 transitions, 531 flow [2023-09-01 04:55:47,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 530 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:55:47,398 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 342 flow [2023-09-01 04:55:47,398 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} [2023-09-01 04:55:47,399 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2023-09-01 04:55:47,400 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 342 flow [2023-09-01 04:55:47,400 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) [2023-09-01 04:55:47,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:55:47,401 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:55:47,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 04:55:47,401 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:55:47,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:55:47,402 INFO L85 PathProgramCache]: Analyzing trace with hash -530979848, now seen corresponding path program 1 times [2023-09-01 04:55:47,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:55:47,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475279180] [2023-09-01 04:55:47,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:47,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:55:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:47,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:47,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:55:47,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475279180] [2023-09-01 04:55:47,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475279180] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:55:47,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141959945] [2023-09-01 04:55:47,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:47,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:55:47,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:55:47,549 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:55:47,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 04:55:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:47,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 04:55:47,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:55:47,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 04:55:47,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:55:47,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141959945] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:55:47,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:55:47,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-09-01 04:55:47,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130628949] [2023-09-01 04:55:47,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:55:47,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 04:55:47,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:55:47,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 04:55:47,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 04:55:47,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-09-01 04:55:47,785 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) [2023-09-01 04:55:47,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:55:47,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-09-01 04:55:47,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:55:48,206 INFO L130 PetriNetUnfolder]: 1509/2704 cut-off events. [2023-09-01 04:55:48,206 INFO L131 PetriNetUnfolder]: For 3408/3408 co-relation queries the response was YES. [2023-09-01 04:55:48,214 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. [2023-09-01 04:55:48,225 INFO L137 encePairwiseOnDemand]: 314/325 looper letters, 95 selfloop transitions, 30 changer transitions 0/126 dead transitions. [2023-09-01 04:55:48,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 126 transitions, 932 flow [2023-09-01 04:55:48,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 04:55:48,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 04:55:48,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1136 transitions. [2023-09-01 04:55:48,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49934065934065935 [2023-09-01 04:55:48,228 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1136 transitions. [2023-09-01 04:55:48,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1136 transitions. [2023-09-01 04:55:48,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:55:48,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1136 transitions. [2023-09-01 04:55:48,232 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) [2023-09-01 04:55:48,235 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) [2023-09-01 04:55:48,235 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) [2023-09-01 04:55:48,235 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 342 flow. Second operand 7 states and 1136 transitions. [2023-09-01 04:55:48,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 126 transitions, 932 flow [2023-09-01 04:55:48,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 126 transitions, 905 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-09-01 04:55:48,245 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 567 flow [2023-09-01 04:55:48,245 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} [2023-09-01 04:55:48,246 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2023-09-01 04:55:48,246 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 567 flow [2023-09-01 04:55:48,247 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) [2023-09-01 04:55:48,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:55:48,247 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:55:48,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 04:55:48,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:55:48,454 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:55:48,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:55:48,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1665666210, now seen corresponding path program 1 times [2023-09-01 04:55:48,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:55:48,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485016367] [2023-09-01 04:55:48,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:48,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:55:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:48,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:48,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:55:48,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485016367] [2023-09-01 04:55:48,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485016367] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:55:48,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837403024] [2023-09-01 04:55:48,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:48,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:55:48,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:55:48,598 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:55:48,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 04:55:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:48,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 04:55:48,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:55:48,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 04:55:48,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:55:48,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837403024] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:55:48,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:55:48,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-09-01 04:55:48,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985930688] [2023-09-01 04:55:48,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:55:48,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 04:55:48,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:55:48,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 04:55:48,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-09-01 04:55:48,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-09-01 04:55:48,820 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) [2023-09-01 04:55:48,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:55:48,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-09-01 04:55:48,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:55:49,297 INFO L130 PetriNetUnfolder]: 2065/3686 cut-off events. [2023-09-01 04:55:49,297 INFO L131 PetriNetUnfolder]: For 6714/6714 co-relation queries the response was YES. [2023-09-01 04:55:49,308 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. [2023-09-01 04:55:49,321 INFO L137 encePairwiseOnDemand]: 314/325 looper letters, 121 selfloop transitions, 27 changer transitions 0/149 dead transitions. [2023-09-01 04:55:49,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 149 transitions, 1285 flow [2023-09-01 04:55:49,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 04:55:49,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 04:55:49,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1137 transitions. [2023-09-01 04:55:49,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4997802197802198 [2023-09-01 04:55:49,325 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1137 transitions. [2023-09-01 04:55:49,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1137 transitions. [2023-09-01 04:55:49,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:55:49,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1137 transitions. [2023-09-01 04:55:49,328 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) [2023-09-01 04:55:49,331 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) [2023-09-01 04:55:49,332 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) [2023-09-01 04:55:49,332 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 567 flow. Second operand 7 states and 1137 transitions. [2023-09-01 04:55:49,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 149 transitions, 1285 flow [2023-09-01 04:55:49,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 149 transitions, 1219 flow, removed 33 selfloop flow, removed 0 redundant places. [2023-09-01 04:55:49,348 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 855 flow [2023-09-01 04:55:49,348 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} [2023-09-01 04:55:49,350 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 44 predicate places. [2023-09-01 04:55:49,350 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 855 flow [2023-09-01 04:55:49,350 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) [2023-09-01 04:55:49,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:55:49,350 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-09-01 04:55:49,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 04:55:49,559 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 [2023-09-01 04:55:49,559 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:55:49,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:55:49,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2011874415, now seen corresponding path program 1 times [2023-09-01 04:55:49,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:55:49,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326178866] [2023-09-01 04:55:49,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:49,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:55:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:49,741 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:49,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:55:49,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326178866] [2023-09-01 04:55:49,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326178866] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:55:49,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431966015] [2023-09-01 04:55:49,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:49,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:55:49,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:55:49,743 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:55:49,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 04:55:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:49,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 04:55:49,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:55:49,924 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:49,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:55:50,024 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:50,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431966015] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:55:50,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:55:50,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-09-01 04:55:50,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574173276] [2023-09-01 04:55:50,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:55:50,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 04:55:50,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:55:50,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 04:55:50,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-09-01 04:55:50,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 325 [2023-09-01 04:55:50,121 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) [2023-09-01 04:55:50,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:55:50,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 325 [2023-09-01 04:55:50,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:55:51,172 INFO L130 PetriNetUnfolder]: 3297/5908 cut-off events. [2023-09-01 04:55:51,172 INFO L131 PetriNetUnfolder]: For 10916/10916 co-relation queries the response was YES. [2023-09-01 04:55:51,186 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. [2023-09-01 04:55:51,206 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 293 selfloop transitions, 41 changer transitions 2/337 dead transitions. [2023-09-01 04:55:51,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 337 transitions, 2647 flow [2023-09-01 04:55:51,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 04:55:51,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 04:55:51,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3168 transitions. [2023-09-01 04:55:51,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130364372469636 [2023-09-01 04:55:51,215 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3168 transitions. [2023-09-01 04:55:51,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3168 transitions. [2023-09-01 04:55:51,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:55:51,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3168 transitions. [2023-09-01 04:55:51,224 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) [2023-09-01 04:55:51,233 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) [2023-09-01 04:55:51,234 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) [2023-09-01 04:55:51,235 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 855 flow. Second operand 19 states and 3168 transitions. [2023-09-01 04:55:51,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 337 transitions, 2647 flow [2023-09-01 04:55:51,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 337 transitions, 2629 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-09-01 04:55:51,264 INFO L231 Difference]: Finished difference. Result has 109 places, 108 transitions, 1189 flow [2023-09-01 04:55:51,264 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} [2023-09-01 04:55:51,264 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2023-09-01 04:55:51,265 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 108 transitions, 1189 flow [2023-09-01 04:55:51,266 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) [2023-09-01 04:55:51,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:55:51,266 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:55:51,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 04:55:51,471 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 [2023-09-01 04:55:51,472 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:55:51,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:55:51,472 INFO L85 PathProgramCache]: Analyzing trace with hash -503819008, now seen corresponding path program 2 times [2023-09-01 04:55:51,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:55:51,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040126746] [2023-09-01 04:55:51,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:51,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:55:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:51,686 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 04:55:51,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:55:51,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040126746] [2023-09-01 04:55:51,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040126746] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:55:51,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944363818] [2023-09-01 04:55:51,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:55:51,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:55:51,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:55:51,689 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:55:51,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 04:55:51,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:55:51,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:55:51,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 04:55:51,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:55:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 04:55:51,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:55:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 04:55:51,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944363818] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:55:51,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:55:51,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-09-01 04:55:51,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810555256] [2023-09-01 04:55:51,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:55:51,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 04:55:51,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:55:51,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 04:55:51,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-09-01 04:55:52,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 325 [2023-09-01 04:55:52,068 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) [2023-09-01 04:55:52,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:55:52,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 325 [2023-09-01 04:55:52,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:55:53,190 INFO L130 PetriNetUnfolder]: 4341/7764 cut-off events. [2023-09-01 04:55:53,190 INFO L131 PetriNetUnfolder]: For 18872/18872 co-relation queries the response was YES. [2023-09-01 04:55:53,216 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. [2023-09-01 04:55:53,238 INFO L137 encePairwiseOnDemand]: 314/325 looper letters, 211 selfloop transitions, 98 changer transitions 2/312 dead transitions. [2023-09-01 04:55:53,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 312 transitions, 2858 flow [2023-09-01 04:55:53,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-09-01 04:55:53,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-09-01 04:55:53,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3146 transitions. [2023-09-01 04:55:53,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484 [2023-09-01 04:55:53,247 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3146 transitions. [2023-09-01 04:55:53,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3146 transitions. [2023-09-01 04:55:53,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:55:53,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3146 transitions. [2023-09-01 04:55:53,255 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) [2023-09-01 04:55:53,265 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) [2023-09-01 04:55:53,266 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) [2023-09-01 04:55:53,266 INFO L175 Difference]: Start difference. First operand has 109 places, 108 transitions, 1189 flow. Second operand 20 states and 3146 transitions. [2023-09-01 04:55:53,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 312 transitions, 2858 flow [2023-09-01 04:55:53,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 312 transitions, 2747 flow, removed 45 selfloop flow, removed 5 redundant places. [2023-09-01 04:55:53,326 INFO L231 Difference]: Finished difference. Result has 126 places, 144 transitions, 1811 flow [2023-09-01 04:55:53,326 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} [2023-09-01 04:55:53,326 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 84 predicate places. [2023-09-01 04:55:53,326 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 144 transitions, 1811 flow [2023-09-01 04:55:53,327 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) [2023-09-01 04:55:53,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:55:53,327 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] [2023-09-01 04:55:53,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 04:55:53,540 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 [2023-09-01 04:55:53,540 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:55:53,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:55:53,541 INFO L85 PathProgramCache]: Analyzing trace with hash 164327617, now seen corresponding path program 1 times [2023-09-01 04:55:53,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:55:53,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624132843] [2023-09-01 04:55:53,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:53,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:55:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:53,689 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:53,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:55:53,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624132843] [2023-09-01 04:55:53,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624132843] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:55:53,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604135162] [2023-09-01 04:55:53,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:53,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:55:53,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:55:53,692 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:55:53,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 04:55:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:53,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 04:55:53,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:55:53,871 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:53,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:55:53,962 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:53,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604135162] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:55:53,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:55:53,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-09-01 04:55:53,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074920534] [2023-09-01 04:55:53,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:55:53,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 04:55:53,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:55:53,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 04:55:53,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-09-01 04:55:54,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 325 [2023-09-01 04:55:54,100 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) [2023-09-01 04:55:54,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:55:54,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 325 [2023-09-01 04:55:54,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:55:55,441 INFO L130 PetriNetUnfolder]: 4747/8524 cut-off events. [2023-09-01 04:55:55,442 INFO L131 PetriNetUnfolder]: For 21535/21535 co-relation queries the response was YES. [2023-09-01 04:55:55,469 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. [2023-09-01 04:55:55,491 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 166 selfloop transitions, 121 changer transitions 2/290 dead transitions. [2023-09-01 04:55:55,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 290 transitions, 2998 flow [2023-09-01 04:55:55,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 04:55:55,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 04:55:55,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2963 transitions. [2023-09-01 04:55:55,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47983805668016194 [2023-09-01 04:55:55,497 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2963 transitions. [2023-09-01 04:55:55,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2963 transitions. [2023-09-01 04:55:55,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:55:55,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2963 transitions. [2023-09-01 04:55:55,503 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) [2023-09-01 04:55:55,509 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) [2023-09-01 04:55:55,510 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) [2023-09-01 04:55:55,510 INFO L175 Difference]: Start difference. First operand has 126 places, 144 transitions, 1811 flow. Second operand 19 states and 2963 transitions. [2023-09-01 04:55:55,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 290 transitions, 2998 flow [2023-09-01 04:55:55,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 290 transitions, 2792 flow, removed 71 selfloop flow, removed 5 redundant places. [2023-09-01 04:55:55,593 INFO L231 Difference]: Finished difference. Result has 135 places, 159 transitions, 2008 flow [2023-09-01 04:55:55,593 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} [2023-09-01 04:55:55,595 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 93 predicate places. [2023-09-01 04:55:55,595 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 159 transitions, 2008 flow [2023-09-01 04:55:55,595 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) [2023-09-01 04:55:55,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:55:55,596 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] [2023-09-01 04:55:55,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 04:55:55,802 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 [2023-09-01 04:55:55,802 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:55:55,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:55:55,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1963966512, now seen corresponding path program 1 times [2023-09-01 04:55:55,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:55:55,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028121512] [2023-09-01 04:55:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:55,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:55:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:56,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:55:56,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028121512] [2023-09-01 04:55:56,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028121512] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:55:56,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095181815] [2023-09-01 04:55:56,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:56,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:55:56,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:55:56,102 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:55:56,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 04:55:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:56,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 04:55:56,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:55:56,315 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:56,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:55:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:55:56,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095181815] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:55:56,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:55:56,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2023-09-01 04:55:56,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834228056] [2023-09-01 04:55:56,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:55:56,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-09-01 04:55:56,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:55:56,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-09-01 04:55:56,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2023-09-01 04:55:56,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 325 [2023-09-01 04:55:56,643 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) [2023-09-01 04:55:56,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:55:56,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 325 [2023-09-01 04:55:56,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:55:57,792 INFO L130 PetriNetUnfolder]: 4709/8480 cut-off events. [2023-09-01 04:55:57,792 INFO L131 PetriNetUnfolder]: For 19934/19934 co-relation queries the response was YES. [2023-09-01 04:55:57,809 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. [2023-09-01 04:55:57,824 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 86 selfloop transitions, 114 changer transitions 15/216 dead transitions. [2023-09-01 04:55:57,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 216 transitions, 2522 flow [2023-09-01 04:55:57,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 04:55:57,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 04:55:57,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1661 transitions. [2023-09-01 04:55:57,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646153846153846 [2023-09-01 04:55:57,827 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1661 transitions. [2023-09-01 04:55:57,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1661 transitions. [2023-09-01 04:55:57,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:55:57,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1661 transitions. [2023-09-01 04:55:57,830 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) [2023-09-01 04:55:57,833 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) [2023-09-01 04:55:57,834 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) [2023-09-01 04:55:57,834 INFO L175 Difference]: Start difference. First operand has 135 places, 159 transitions, 2008 flow. Second operand 11 states and 1661 transitions. [2023-09-01 04:55:57,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 216 transitions, 2522 flow [2023-09-01 04:55:57,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 216 transitions, 2078 flow, removed 86 selfloop flow, removed 13 redundant places. [2023-09-01 04:55:57,904 INFO L231 Difference]: Finished difference. Result has 127 places, 151 transitions, 1643 flow [2023-09-01 04:55:57,904 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} [2023-09-01 04:55:57,905 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2023-09-01 04:55:57,905 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 151 transitions, 1643 flow [2023-09-01 04:55:57,906 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) [2023-09-01 04:55:57,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:55:57,906 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:55:57,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 04:55:58,113 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 [2023-09-01 04:55:58,113 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:55:58,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:55:58,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1500469948, now seen corresponding path program 3 times [2023-09-01 04:55:58,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:55:58,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843492229] [2023-09-01 04:55:58,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:55:58,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:55:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:55:58,353 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:55:58,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:55:58,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843492229] [2023-09-01 04:55:58,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843492229] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:55:58,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341636917] [2023-09-01 04:55:58,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:55:58,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:55:58,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:55:58,357 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:55:58,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 04:55:58,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-09-01 04:55:58,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:55:58,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 04:55:58,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:55:58,661 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:55:58,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:55:58,801 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:55:58,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341636917] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:55:58,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:55:58,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-09-01 04:55:58,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236140171] [2023-09-01 04:55:58,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:55:58,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 04:55:58,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:55:58,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 04:55:58,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-09-01 04:55:58,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-09-01 04:55:58,929 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) [2023-09-01 04:55:58,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:55:58,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-09-01 04:55:58,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:00,348 INFO L130 PetriNetUnfolder]: 5496/9773 cut-off events. [2023-09-01 04:56:00,349 INFO L131 PetriNetUnfolder]: For 20138/20138 co-relation queries the response was YES. [2023-09-01 04:56:00,395 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. [2023-09-01 04:56:00,424 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 272 selfloop transitions, 166 changer transitions 7/446 dead transitions. [2023-09-01 04:56:00,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 446 transitions, 4204 flow [2023-09-01 04:56:00,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-09-01 04:56:00,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-09-01 04:56:00,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3797 transitions. [2023-09-01 04:56:00,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867948717948718 [2023-09-01 04:56:00,429 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3797 transitions. [2023-09-01 04:56:00,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3797 transitions. [2023-09-01 04:56:00,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:00,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3797 transitions. [2023-09-01 04:56:00,434 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) [2023-09-01 04:56:00,442 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) [2023-09-01 04:56:00,443 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) [2023-09-01 04:56:00,443 INFO L175 Difference]: Start difference. First operand has 127 places, 151 transitions, 1643 flow. Second operand 24 states and 3797 transitions. [2023-09-01 04:56:00,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 446 transitions, 4204 flow [2023-09-01 04:56:00,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 446 transitions, 3943 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-09-01 04:56:00,520 INFO L231 Difference]: Finished difference. Result has 144 places, 225 transitions, 2701 flow [2023-09-01 04:56:00,520 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} [2023-09-01 04:56:00,521 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 102 predicate places. [2023-09-01 04:56:00,521 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 225 transitions, 2701 flow [2023-09-01 04:56:00,522 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) [2023-09-01 04:56:00,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:00,522 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1] [2023-09-01 04:56:00,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 04:56:00,728 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 [2023-09-01 04:56:00,728 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:00,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:00,729 INFO L85 PathProgramCache]: Analyzing trace with hash 442284519, now seen corresponding path program 2 times [2023-09-01 04:56:00,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:00,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302299623] [2023-09-01 04:56:00,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:00,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:01,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:01,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302299623] [2023-09-01 04:56:01,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302299623] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:56:01,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677169920] [2023-09-01 04:56:01,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:56:01,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:56:01,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:56:01,107 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:56:01,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 04:56:01,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:56:01,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:56:01,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 04:56:01,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:56:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:01,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:56:01,680 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:01,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677169920] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:56:01,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:56:01,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-09-01 04:56:01,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183818959] [2023-09-01 04:56:01,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:56:01,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-09-01 04:56:01,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:01,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-09-01 04:56:01,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-09-01 04:56:01,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 325 [2023-09-01 04:56:01,858 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) [2023-09-01 04:56:01,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:01,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 325 [2023-09-01 04:56:01,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:04,344 INFO L130 PetriNetUnfolder]: 7580/13517 cut-off events. [2023-09-01 04:56:04,345 INFO L131 PetriNetUnfolder]: For 37872/37872 co-relation queries the response was YES. [2023-09-01 04:56:04,387 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. [2023-09-01 04:56:04,420 INFO L137 encePairwiseOnDemand]: 318/325 looper letters, 583 selfloop transitions, 98 changer transitions 0/682 dead transitions. [2023-09-01 04:56:04,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 682 transitions, 6312 flow [2023-09-01 04:56:04,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-09-01 04:56:04,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-09-01 04:56:04,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5489 transitions. [2023-09-01 04:56:04,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117948717948718 [2023-09-01 04:56:04,428 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5489 transitions. [2023-09-01 04:56:04,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5489 transitions. [2023-09-01 04:56:04,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:04,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5489 transitions. [2023-09-01 04:56:04,439 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) [2023-09-01 04:56:04,449 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) [2023-09-01 04:56:04,451 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) [2023-09-01 04:56:04,451 INFO L175 Difference]: Start difference. First operand has 144 places, 225 transitions, 2701 flow. Second operand 33 states and 5489 transitions. [2023-09-01 04:56:04,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 682 transitions, 6312 flow [2023-09-01 04:56:04,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 682 transitions, 6181 flow, removed 37 selfloop flow, removed 7 redundant places. [2023-09-01 04:56:04,576 INFO L231 Difference]: Finished difference. Result has 177 places, 261 transitions, 3354 flow [2023-09-01 04:56:04,576 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} [2023-09-01 04:56:04,577 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 135 predicate places. [2023-09-01 04:56:04,577 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 261 transitions, 3354 flow [2023-09-01 04:56:04,578 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) [2023-09-01 04:56:04,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:04,578 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:56:04,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 04:56:04,787 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 [2023-09-01 04:56:04,788 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:04,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:04,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1080399752, now seen corresponding path program 4 times [2023-09-01 04:56:04,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:04,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844090398] [2023-09-01 04:56:04,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:04,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:56:05,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:05,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844090398] [2023-09-01 04:56:05,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844090398] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:56:05,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748129104] [2023-09-01 04:56:05,218 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 04:56:05,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:56:05,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:56:05,219 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:56:05,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 04:56:05,412 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 04:56:05,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:56:05,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 04:56:05,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:56:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:56:05,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:56:05,749 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:56:05,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748129104] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:56:05,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:56:05,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2023-09-01 04:56:05,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48694673] [2023-09-01 04:56:05,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:56:05,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-09-01 04:56:05,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:05,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-09-01 04:56:05,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2023-09-01 04:56:05,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-09-01 04:56:05,917 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) [2023-09-01 04:56:05,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:05,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-09-01 04:56:05,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:09,186 INFO L130 PetriNetUnfolder]: 10380/18473 cut-off events. [2023-09-01 04:56:09,186 INFO L131 PetriNetUnfolder]: For 54270/54270 co-relation queries the response was YES. [2023-09-01 04:56:09,250 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. [2023-09-01 04:56:09,291 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 394 selfloop transitions, 306 changer transitions 10/711 dead transitions. [2023-09-01 04:56:09,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 711 transitions, 7443 flow [2023-09-01 04:56:09,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-09-01 04:56:09,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-09-01 04:56:09,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5533 transitions. [2023-09-01 04:56:09,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48641758241758243 [2023-09-01 04:56:09,296 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5533 transitions. [2023-09-01 04:56:09,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5533 transitions. [2023-09-01 04:56:09,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:09,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5533 transitions. [2023-09-01 04:56:09,303 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) [2023-09-01 04:56:09,311 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) [2023-09-01 04:56:09,312 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) [2023-09-01 04:56:09,312 INFO L175 Difference]: Start difference. First operand has 177 places, 261 transitions, 3354 flow. Second operand 35 states and 5533 transitions. [2023-09-01 04:56:09,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 711 transitions, 7443 flow [2023-09-01 04:56:09,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 711 transitions, 7141 flow, removed 90 selfloop flow, removed 11 redundant places. [2023-09-01 04:56:09,493 INFO L231 Difference]: Finished difference. Result has 210 places, 379 transitions, 5379 flow [2023-09-01 04:56:09,493 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} [2023-09-01 04:56:09,494 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 168 predicate places. [2023-09-01 04:56:09,494 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 379 transitions, 5379 flow [2023-09-01 04:56:09,495 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) [2023-09-01 04:56:09,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:09,495 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:56:09,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-09-01 04:56:09,701 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 [2023-09-01 04:56:09,701 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:09,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:09,701 INFO L85 PathProgramCache]: Analyzing trace with hash -252758361, now seen corresponding path program 1 times [2023-09-01 04:56:09,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:09,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139653203] [2023-09-01 04:56:09,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:09,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:10,207 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 04:56:10,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:10,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139653203] [2023-09-01 04:56:10,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139653203] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:56:10,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488665914] [2023-09-01 04:56:10,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:10,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:56:10,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:56:10,213 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:56:10,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 04:56:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:10,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 19 conjunts are in the unsatisfiable core [2023-09-01 04:56:10,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:56:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:56:10,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:56:10,725 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:56:10,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488665914] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:56:10,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:56:10,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 24 [2023-09-01 04:56:10,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280485870] [2023-09-01 04:56:10,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:56:10,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-09-01 04:56:10,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:10,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-09-01 04:56:10,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2023-09-01 04:56:10,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-09-01 04:56:10,917 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) [2023-09-01 04:56:10,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:10,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-09-01 04:56:10,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:16,322 INFO L130 PetriNetUnfolder]: 17018/30187 cut-off events. [2023-09-01 04:56:16,322 INFO L131 PetriNetUnfolder]: For 102782/102782 co-relation queries the response was YES. [2023-09-01 04:56:16,474 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. [2023-09-01 04:56:16,532 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 460 selfloop transitions, 531 changer transitions 8/1000 dead transitions. [2023-09-01 04:56:16,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 1000 transitions, 13148 flow [2023-09-01 04:56:16,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-09-01 04:56:16,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-09-01 04:56:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4917 transitions. [2023-09-01 04:56:16,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880397022332506 [2023-09-01 04:56:16,537 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4917 transitions. [2023-09-01 04:56:16,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4917 transitions. [2023-09-01 04:56:16,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:16,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4917 transitions. [2023-09-01 04:56:16,544 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) [2023-09-01 04:56:16,551 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) [2023-09-01 04:56:16,552 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) [2023-09-01 04:56:16,552 INFO L175 Difference]: Start difference. First operand has 210 places, 379 transitions, 5379 flow. Second operand 31 states and 4917 transitions. [2023-09-01 04:56:16,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 1000 transitions, 13148 flow [2023-09-01 04:56:16,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 1000 transitions, 12709 flow, removed 147 selfloop flow, removed 10 redundant places. [2023-09-01 04:56:16,992 INFO L231 Difference]: Finished difference. Result has 245 places, 693 transitions, 11567 flow [2023-09-01 04:56:16,993 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} [2023-09-01 04:56:16,993 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 203 predicate places. [2023-09-01 04:56:16,993 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 693 transitions, 11567 flow [2023-09-01 04:56:16,994 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) [2023-09-01 04:56:16,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:16,994 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] [2023-09-01 04:56:17,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-09-01 04:56:17,200 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 [2023-09-01 04:56:17,200 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:17,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:17,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1747876112, now seen corresponding path program 5 times [2023-09-01 04:56:17,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:17,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771967161] [2023-09-01 04:56:17,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:17,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:17,963 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 04:56:17,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:17,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771967161] [2023-09-01 04:56:17,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771967161] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:56:17,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46226724] [2023-09-01 04:56:17,963 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 04:56:17,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:56:17,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:56:17,965 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:56:17,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 04:56:18,318 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-09-01 04:56:18,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:56:18,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 04:56:18,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:56:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:56:18,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:56:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:56:18,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46226724] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:56:18,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:56:18,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 42 [2023-09-01 04:56:18,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566557410] [2023-09-01 04:56:18,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:56:18,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-09-01 04:56:18,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:18,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-09-01 04:56:18,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2023-09-01 04:56:19,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-09-01 04:56:19,058 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) [2023-09-01 04:56:19,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:19,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-09-01 04:56:19,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:31,482 INFO L130 PetriNetUnfolder]: 27676/49013 cut-off events. [2023-09-01 04:56:31,482 INFO L131 PetriNetUnfolder]: For 233918/233918 co-relation queries the response was YES. [2023-09-01 04:56:31,936 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. [2023-09-01 04:56:32,049 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 918 selfloop transitions, 794 changer transitions 12/1725 dead transitions. [2023-09-01 04:56:32,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 1725 transitions, 24841 flow [2023-09-01 04:56:32,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-09-01 04:56:32,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-09-01 04:56:32,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 8722 transitions. [2023-09-01 04:56:32,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48794405594405593 [2023-09-01 04:56:32,059 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 8722 transitions. [2023-09-01 04:56:32,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 8722 transitions. [2023-09-01 04:56:32,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:32,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 8722 transitions. [2023-09-01 04:56:32,070 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) [2023-09-01 04:56:32,083 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) [2023-09-01 04:56:32,084 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) [2023-09-01 04:56:32,085 INFO L175 Difference]: Start difference. First operand has 245 places, 693 transitions, 11567 flow. Second operand 55 states and 8722 transitions. [2023-09-01 04:56:32,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 1725 transitions, 24841 flow [2023-09-01 04:56:33,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 1725 transitions, 24533 flow, removed 113 selfloop flow, removed 5 redundant places. [2023-09-01 04:56:33,944 INFO L231 Difference]: Finished difference. Result has 321 places, 1119 transitions, 21702 flow [2023-09-01 04:56:33,945 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} [2023-09-01 04:56:33,945 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 279 predicate places. [2023-09-01 04:56:33,945 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 1119 transitions, 21702 flow [2023-09-01 04:56:33,946 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) [2023-09-01 04:56:33,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:33,946 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:56:33,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-09-01 04:56:34,147 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 [2023-09-01 04:56:34,147 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:34,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:34,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1979003691, now seen corresponding path program 2 times [2023-09-01 04:56:34,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:34,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672244074] [2023-09-01 04:56:34,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:34,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:34,687 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:56:34,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:34,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672244074] [2023-09-01 04:56:34,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672244074] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:56:34,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175370149] [2023-09-01 04:56:34,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:56:34,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:56:34,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:56:34,693 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:56:34,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-09-01 04:56:34,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:56:34,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:56:34,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 04:56:34,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:56:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:56:35,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:56:35,395 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:56:35,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175370149] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:56:35,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:56:35,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2023-09-01 04:56:35,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926312236] [2023-09-01 04:56:35,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:56:35,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-09-01 04:56:35,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:35,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-09-01 04:56:35,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1086, Unknown=0, NotChecked=0, Total=1406 [2023-09-01 04:56:35,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-09-01 04:56:35,588 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) [2023-09-01 04:56:35,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:35,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-09-01 04:56:35,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:59,852 INFO L130 PetriNetUnfolder]: 39670/70239 cut-off events. [2023-09-01 04:56:59,852 INFO L131 PetriNetUnfolder]: For 436720/436720 co-relation queries the response was YES. [2023-09-01 04:57:00,888 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. [2023-09-01 04:57:01,082 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 635 selfloop transitions, 1472 changer transitions 15/2123 dead transitions. [2023-09-01 04:57:01,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 2123 transitions, 38137 flow [2023-09-01 04:57:01,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-09-01 04:57:01,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-09-01 04:57:01,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 7575 transitions. [2023-09-01 04:57:01,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855769230769231 [2023-09-01 04:57:01,089 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 7575 transitions. [2023-09-01 04:57:01,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 7575 transitions. [2023-09-01 04:57:01,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:01,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 7575 transitions. [2023-09-01 04:57:01,100 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) [2023-09-01 04:57:01,111 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) [2023-09-01 04:57:01,113 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) [2023-09-01 04:57:01,113 INFO L175 Difference]: Start difference. First operand has 321 places, 1119 transitions, 21702 flow. Second operand 48 states and 7575 transitions. [2023-09-01 04:57:01,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 2123 transitions, 38137 flow [2023-09-01 04:57:06,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 2123 transitions, 36715 flow, removed 319 selfloop flow, removed 13 redundant places. [2023-09-01 04:57:06,309 INFO L231 Difference]: Finished difference. Result has 375 places, 1660 transitions, 35602 flow [2023-09-01 04:57:06,310 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} [2023-09-01 04:57:06,311 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 333 predicate places. [2023-09-01 04:57:06,311 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 1660 transitions, 35602 flow [2023-09-01 04:57:06,312 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) [2023-09-01 04:57:06,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:06,312 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:06,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-09-01 04:57:06,513 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 [2023-09-01 04:57:06,513 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:57:06,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:06,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1274319561, now seen corresponding path program 3 times [2023-09-01 04:57:06,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:06,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377156448] [2023-09-01 04:57:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:06,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:57:07,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:07,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377156448] [2023-09-01 04:57:07,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377156448] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:57:07,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345104266] [2023-09-01 04:57:07,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:57:07,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:57:07,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:57:07,049 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:57:07,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-09-01 04:57:07,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-09-01 04:57:07,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:57:07,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 04:57:07,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:57:07,902 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:57:07,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:57:08,215 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 04:57:08,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345104266] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:57:08,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:57:08,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2023-09-01 04:57:08,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212339079] [2023-09-01 04:57:08,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:57:08,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-09-01 04:57:08,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:08,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-09-01 04:57:08,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1086, Unknown=0, NotChecked=0, Total=1406 [2023-09-01 04:57:08,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-09-01 04:57:08,469 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) [2023-09-01 04:57:08,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:08,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-09-01 04:57:08,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:59,103 INFO L130 PetriNetUnfolder]: 62613/110940 cut-off events. [2023-09-01 04:57:59,103 INFO L131 PetriNetUnfolder]: For 749648/749648 co-relation queries the response was YES. [2023-09-01 04:58:00,872 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. [2023-09-01 04:58:01,373 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 820 selfloop transitions, 2380 changer transitions 13/3214 dead transitions. [2023-09-01 04:58:01,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 3214 transitions, 66519 flow [2023-09-01 04:58:01,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-09-01 04:58:01,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-09-01 04:58:01,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7277 transitions. [2023-09-01 04:58:01,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48675585284280937 [2023-09-01 04:58:01,381 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7277 transitions. [2023-09-01 04:58:01,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7277 transitions. [2023-09-01 04:58:01,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:58:01,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7277 transitions. [2023-09-01 04:58:01,389 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) [2023-09-01 04:58:01,399 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) [2023-09-01 04:58:01,400 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) [2023-09-01 04:58:01,401 INFO L175 Difference]: Start difference. First operand has 375 places, 1660 transitions, 35602 flow. Second operand 46 states and 7277 transitions. [2023-09-01 04:58:01,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 3214 transitions, 66519 flow [2023-09-01 04:58:16,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 3214 transitions, 64609 flow, removed 651 selfloop flow, removed 16 redundant places. [2023-09-01 04:58:16,537 INFO L231 Difference]: Finished difference. Result has 421 places, 2731 transitions, 64382 flow [2023-09-01 04:58:16,539 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} [2023-09-01 04:58:16,540 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 379 predicate places. [2023-09-01 04:58:16,540 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 2731 transitions, 64382 flow [2023-09-01 04:58:16,541 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) [2023-09-01 04:58:16,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:58:16,541 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] [2023-09-01 04:58:16,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-09-01 04:58:16,749 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 [2023-09-01 04:58:16,749 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:58:16,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:58:16,750 INFO L85 PathProgramCache]: Analyzing trace with hash -282197796, now seen corresponding path program 4 times [2023-09-01 04:58:16,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:58:16,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983126856] [2023-09-01 04:58:16,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:58:16,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:58:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:58:17,463 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 417 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-09-01 04:58:17,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:58:17,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983126856] [2023-09-01 04:58:17,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983126856] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:58:17,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55386453] [2023-09-01 04:58:17,464 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 04:58:17,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:58:17,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:58:17,465 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:58:17,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-09-01 04:58:17,744 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 04:58:17,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:58:17,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 04:58:17,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:58:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 411 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-09-01 04:58:17,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:58:18,267 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 411 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-09-01 04:58:18,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55386453] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:58:18,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:58:18,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 38 [2023-09-01 04:58:18,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486444820] [2023-09-01 04:58:18,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:58:18,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-09-01 04:58:18,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:58:18,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-09-01 04:58:18,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=1227, Unknown=0, NotChecked=0, Total=1560 [2023-09-01 04:58:18,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-09-01 04:58:18,466 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) [2023-09-01 04:58:18,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:58:18,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-09-01 04:58:18,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand