./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/stack_longer-2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/stack_longer-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 08:24:09,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 08:24:09,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 08:24:09,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 08:24:09,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 08:24:09,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 08:24:09,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 08:24:09,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 08:24:09,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 08:24:09,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 08:24:09,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 08:24:09,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 08:24:09,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 08:24:09,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 08:24:09,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 08:24:09,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 08:24:09,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 08:24:09,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 08:24:09,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 08:24:09,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 08:24:09,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 08:24:09,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 08:24:09,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 08:24:09,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 08:24:09,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 08:24:09,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 08:24:09,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 08:24:09,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 08:24:09,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 08:24:09,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 08:24:09,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 08:24:09,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 08:24:09,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 08:24:09,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 08:24:09,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 08:24:09,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 08:24:09,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 08:24:09,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 08:24:09,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 08:24:09,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 08:24:09,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 08:24:09,525 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 08:24:09,549 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 08:24:09,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 08:24:09,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 08:24:09,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 08:24:09,551 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 08:24:09,551 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 08:24:09,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 08:24:09,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 08:24:09,553 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 08:24:09,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 08:24:09,553 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 08:24:09,554 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 08:24:09,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 08:24:09,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 08:24:09,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 08:24:09,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 08:24:09,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 08:24:09,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 08:24:09,555 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 08:24:09,555 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 08:24:09,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 08:24:09,555 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 08:24:09,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 08:24:09,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 08:24:09,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 08:24:09,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 08:24:09,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:24:09,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 08:24:09,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 08:24:09,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 08:24:09,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 08:24:09,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 08:24:09,557 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 08:24:09,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 08:24:09,558 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 08:24:09,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 08:24:09,558 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 08:24:09,558 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 08:24:09,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 08:24:09,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 08:24:09,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 08:24:09,901 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 08:24:09,901 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 08:24:09,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longer-2.i [2023-08-30 08:24:11,100 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 08:24:11,347 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 08:24:11,348 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i [2023-08-30 08:24:11,362 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c7f5dfb/d9c1104b969943c6801c1c47bc44aa25/FLAG6c44e36d3 [2023-08-30 08:24:11,372 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c7f5dfb/d9c1104b969943c6801c1c47bc44aa25 [2023-08-30 08:24:11,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 08:24:11,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 08:24:11,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 08:24:11,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 08:24:11,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 08:24:11,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:24:11" (1/1) ... [2023-08-30 08:24:11,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c55dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:11, skipping insertion in model container [2023-08-30 08:24:11,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:24:11" (1/1) ... [2023-08-30 08:24:11,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 08:24:11,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 08:24:11,773 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i[41529,41542] [2023-08-30 08:24:11,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:24:11,809 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 08:24:11,843 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i[41529,41542] [2023-08-30 08:24:11,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:24:11,919 INFO L208 MainTranslator]: Completed translation [2023-08-30 08:24:11,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:11 WrapperNode [2023-08-30 08:24:11,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 08:24:11,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 08:24:11,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 08:24:11,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 08:24:11,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:11" (1/1) ... [2023-08-30 08:24:11,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:11" (1/1) ... [2023-08-30 08:24:11,991 INFO L138 Inliner]: procedures = 277, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 157 [2023-08-30 08:24:11,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 08:24:11,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 08:24:11,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 08:24:11,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 08:24:12,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:11" (1/1) ... [2023-08-30 08:24:12,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:11" (1/1) ... [2023-08-30 08:24:12,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:11" (1/1) ... [2023-08-30 08:24:12,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:11" (1/1) ... [2023-08-30 08:24:12,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:11" (1/1) ... [2023-08-30 08:24:12,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:11" (1/1) ... [2023-08-30 08:24:12,036 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:11" (1/1) ... [2023-08-30 08:24:12,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:11" (1/1) ... [2023-08-30 08:24:12,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 08:24:12,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 08:24:12,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 08:24:12,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 08:24:12,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:11" (1/1) ... [2023-08-30 08:24:12,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:24:12,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:12,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 08:24:12,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 08:24:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 08:24:12,123 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 08:24:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 08:24:12,124 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 08:24:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 08:24:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 08:24:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 08:24:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 08:24:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 08:24:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 08:24:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 08:24:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 08:24:12,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 08:24:12,127 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 08:24:12,319 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 08:24:12,320 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 08:24:12,534 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 08:24:12,541 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 08:24:12,541 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 08:24:12,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:24:12 BoogieIcfgContainer [2023-08-30 08:24:12,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 08:24:12,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 08:24:12,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 08:24:12,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 08:24:12,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:24:11" (1/3) ... [2023-08-30 08:24:12,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773e11d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:24:12, skipping insertion in model container [2023-08-30 08:24:12,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:11" (2/3) ... [2023-08-30 08:24:12,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773e11d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:24:12, skipping insertion in model container [2023-08-30 08:24:12,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:24:12" (3/3) ... [2023-08-30 08:24:12,559 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2023-08-30 08:24:12,565 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 08:24:12,574 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 08:24:12,575 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 08:24:12,575 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 08:24:12,707 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 08:24:12,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 165 transitions, 346 flow [2023-08-30 08:24:12,830 INFO L130 PetriNetUnfolder]: 10/163 cut-off events. [2023-08-30 08:24:12,831 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:24:12,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 163 events. 10/163 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 416 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 125. Up to 3 conditions per place. [2023-08-30 08:24:12,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 165 transitions, 346 flow [2023-08-30 08:24:12,843 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 154 transitions, 317 flow [2023-08-30 08:24:12,845 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:24:12,858 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 154 transitions, 317 flow [2023-08-30 08:24:12,859 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 154 transitions, 317 flow [2023-08-30 08:24:12,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 154 transitions, 317 flow [2023-08-30 08:24:12,907 INFO L130 PetriNetUnfolder]: 10/154 cut-off events. [2023-08-30 08:24:12,908 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 08:24:12,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 154 events. 10/154 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 352 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 125. Up to 3 conditions per place. [2023-08-30 08:24:12,916 INFO L119 LiptonReduction]: Number of co-enabled transitions 8200 [2023-08-30 08:24:16,352 INFO L134 LiptonReduction]: Checked pairs total: 12122 [2023-08-30 08:24:16,352 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-30 08:24:16,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:24:16,369 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;@3db468f4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:24:16,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 08:24:16,374 INFO L130 PetriNetUnfolder]: 1/19 cut-off events. [2023-08-30 08:24:16,375 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 08:24:16,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:16,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:16,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:16,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:16,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1379937117, now seen corresponding path program 1 times [2023-08-30 08:24:16,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:16,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911894984] [2023-08-30 08:24:16,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:16,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:16,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:16,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911894984] [2023-08-30 08:24:16,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911894984] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:16,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:16,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:16,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615509245] [2023-08-30 08:24:16,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:16,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:16,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:16,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:16,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:16,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 306 [2023-08-30 08:24:16,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:16,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:16,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 306 [2023-08-30 08:24:16,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:16,994 INFO L130 PetriNetUnfolder]: 1105/1816 cut-off events. [2023-08-30 08:24:16,994 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-08-30 08:24:16,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3658 conditions, 1816 events. 1105/1816 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8343 event pairs, 432 based on Foata normal form. 30/1275 useless extension candidates. Maximal degree in co-relation 3420. Up to 1222 conditions per place. [2023-08-30 08:24:17,006 INFO L137 encePairwiseOnDemand]: 299/306 looper letters, 58 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2023-08-30 08:24:17,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 63 transitions, 263 flow [2023-08-30 08:24:17,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:17,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:17,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-30 08:24:17,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55119825708061 [2023-08-30 08:24:17,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-30 08:24:17,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-30 08:24:17,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:17,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-30 08:24:17,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:17,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:17,044 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:17,045 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 3 states and 506 transitions. [2023-08-30 08:24:17,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 63 transitions, 263 flow [2023-08-30 08:24:17,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 63 transitions, 255 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 08:24:17,051 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 105 flow [2023-08-30 08:24:17,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-08-30 08:24:17,057 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-30 08:24:17,058 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 105 flow [2023-08-30 08:24:17,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:17,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:17,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:17,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 08:24:17,060 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:17,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:17,071 INFO L85 PathProgramCache]: Analyzing trace with hash -595359307, now seen corresponding path program 1 times [2023-08-30 08:24:17,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:17,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328226445] [2023-08-30 08:24:17,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:17,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:17,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:17,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:17,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328226445] [2023-08-30 08:24:17,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328226445] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:17,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:17,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:17,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327015233] [2023-08-30 08:24:17,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:17,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:17,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:17,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:17,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:17,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 306 [2023-08-30 08:24:17,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:17,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:17,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 306 [2023-08-30 08:24:17,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:17,490 INFO L130 PetriNetUnfolder]: 1668/2831 cut-off events. [2023-08-30 08:24:17,491 INFO L131 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2023-08-30 08:24:17,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5930 conditions, 2831 events. 1668/2831 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14796 event pairs, 835 based on Foata normal form. 0/2211 useless extension candidates. Maximal degree in co-relation 5606. Up to 1755 conditions per place. [2023-08-30 08:24:17,505 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 68 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-30 08:24:17,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 72 transitions, 324 flow [2023-08-30 08:24:17,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:17,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:17,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2023-08-30 08:24:17,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5675381263616558 [2023-08-30 08:24:17,508 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 521 transitions. [2023-08-30 08:24:17,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 521 transitions. [2023-08-30 08:24:17,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:17,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 521 transitions. [2023-08-30 08:24:17,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:17,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:17,514 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:17,514 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 105 flow. Second operand 3 states and 521 transitions. [2023-08-30 08:24:17,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 72 transitions, 324 flow [2023-08-30 08:24:17,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 72 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:17,519 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 118 flow [2023-08-30 08:24:17,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2023-08-30 08:24:17,520 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-30 08:24:17,521 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 118 flow [2023-08-30 08:24:17,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:17,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:17,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:17,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 08:24:17,522 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:17,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:17,524 INFO L85 PathProgramCache]: Analyzing trace with hash 510376855, now seen corresponding path program 1 times [2023-08-30 08:24:17,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:17,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217588764] [2023-08-30 08:24:17,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:17,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:17,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:17,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217588764] [2023-08-30 08:24:17,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217588764] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:17,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:17,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:17,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707096771] [2023-08-30 08:24:17,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:17,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:17,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:17,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:17,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:17,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 306 [2023-08-30 08:24:17,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:17,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:17,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 306 [2023-08-30 08:24:17,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:17,954 INFO L130 PetriNetUnfolder]: 2077/3384 cut-off events. [2023-08-30 08:24:17,954 INFO L131 PetriNetUnfolder]: For 471/471 co-relation queries the response was YES. [2023-08-30 08:24:17,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7853 conditions, 3384 events. 2077/3384 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 18449 event pairs, 1125 based on Foata normal form. 0/2732 useless extension candidates. Maximal degree in co-relation 6986. Up to 2745 conditions per place. [2023-08-30 08:24:17,998 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 66 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-08-30 08:24:17,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 70 transitions, 332 flow [2023-08-30 08:24:17,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:17,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:18,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2023-08-30 08:24:18,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5642701525054467 [2023-08-30 08:24:18,001 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2023-08-30 08:24:18,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2023-08-30 08:24:18,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:18,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2023-08-30 08:24:18,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:18,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:18,005 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:18,005 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 118 flow. Second operand 3 states and 518 transitions. [2023-08-30 08:24:18,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 70 transitions, 332 flow [2023-08-30 08:24:18,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 70 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:18,009 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 132 flow [2023-08-30 08:24:18,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-30 08:24:18,010 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-30 08:24:18,010 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 132 flow [2023-08-30 08:24:18,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:18,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:18,011 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:18,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 08:24:18,012 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:18,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:18,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2141768095, now seen corresponding path program 1 times [2023-08-30 08:24:18,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:18,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998549761] [2023-08-30 08:24:18,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:18,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:18,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:18,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:18,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998549761] [2023-08-30 08:24:18,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998549761] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:18,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:18,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:18,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749877236] [2023-08-30 08:24:18,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:18,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:18,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:18,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:18,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:18,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 306 [2023-08-30 08:24:18,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:18,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:18,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 306 [2023-08-30 08:24:18,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:18,392 INFO L130 PetriNetUnfolder]: 1793/3144 cut-off events. [2023-08-30 08:24:18,393 INFO L131 PetriNetUnfolder]: For 532/532 co-relation queries the response was YES. [2023-08-30 08:24:18,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7202 conditions, 3144 events. 1793/3144 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 17827 event pairs, 95 based on Foata normal form. 0/2762 useless extension candidates. Maximal degree in co-relation 6840. Up to 2734 conditions per place. [2023-08-30 08:24:18,406 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 59 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-08-30 08:24:18,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 313 flow [2023-08-30 08:24:18,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:18,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:18,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-30 08:24:18,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55119825708061 [2023-08-30 08:24:18,409 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-30 08:24:18,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-30 08:24:18,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:18,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-30 08:24:18,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:18,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:18,413 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:18,413 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 132 flow. Second operand 3 states and 506 transitions. [2023-08-30 08:24:18,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 313 flow [2023-08-30 08:24:18,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:18,415 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 128 flow [2023-08-30 08:24:18,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-08-30 08:24:18,416 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-30 08:24:18,416 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 128 flow [2023-08-30 08:24:18,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:18,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:18,417 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:18,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 08:24:18,417 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:18,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:18,418 INFO L85 PathProgramCache]: Analyzing trace with hash 2141768193, now seen corresponding path program 1 times [2023-08-30 08:24:18,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:18,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968128459] [2023-08-30 08:24:18,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:18,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:18,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 08:24:18,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:18,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968128459] [2023-08-30 08:24:18,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968128459] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:18,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:18,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:18,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170759004] [2023-08-30 08:24:18,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:18,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:18,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:18,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:18,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:18,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 306 [2023-08-30 08:24:18,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:18,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:18,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 306 [2023-08-30 08:24:18,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:18,675 INFO L130 PetriNetUnfolder]: 1680/2953 cut-off events. [2023-08-30 08:24:18,675 INFO L131 PetriNetUnfolder]: For 583/583 co-relation queries the response was YES. [2023-08-30 08:24:18,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6690 conditions, 2953 events. 1680/2953 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16501 event pairs, 305 based on Foata normal form. 0/2659 useless extension candidates. Maximal degree in co-relation 6342. Up to 2083 conditions per place. [2023-08-30 08:24:18,689 INFO L137 encePairwiseOnDemand]: 302/306 looper letters, 56 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2023-08-30 08:24:18,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 309 flow [2023-08-30 08:24:18,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:18,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-08-30 08:24:18,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5479302832244008 [2023-08-30 08:24:18,692 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-08-30 08:24:18,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-08-30 08:24:18,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:18,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-08-30 08:24:18,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:18,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:18,696 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:18,697 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 128 flow. Second operand 3 states and 503 transitions. [2023-08-30 08:24:18,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 309 flow [2023-08-30 08:24:18,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:18,699 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 139 flow [2023-08-30 08:24:18,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-08-30 08:24:18,700 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-30 08:24:18,700 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 139 flow [2023-08-30 08:24:18,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:18,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:18,701 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:18,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 08:24:18,701 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:18,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:18,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1231784516, now seen corresponding path program 1 times [2023-08-30 08:24:18,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:18,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016693979] [2023-08-30 08:24:18,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:18,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:18,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:18,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016693979] [2023-08-30 08:24:18,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016693979] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:18,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962424712] [2023-08-30 08:24:18,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:18,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:18,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:18,789 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:24:18,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 08:24:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:18,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 08:24:18,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:18,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:18,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:19,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:19,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962424712] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:19,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:19,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-30 08:24:19,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940039519] [2023-08-30 08:24:19,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:19,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 08:24:19,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:19,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 08:24:19,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 08:24:19,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-08-30 08:24:19,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 139 flow. Second operand has 10 states, 10 states have (on average 144.7) internal successors, (1447), 10 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:19,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:19,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-08-30 08:24:19,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:19,888 INFO L130 PetriNetUnfolder]: 4162/6891 cut-off events. [2023-08-30 08:24:19,888 INFO L131 PetriNetUnfolder]: For 3792/3792 co-relation queries the response was YES. [2023-08-30 08:24:19,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17356 conditions, 6891 events. 4162/6891 cut-off events. For 3792/3792 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 39087 event pairs, 673 based on Foata normal form. 146/6433 useless extension candidates. Maximal degree in co-relation 16768. Up to 2039 conditions per place. [2023-08-30 08:24:19,928 INFO L137 encePairwiseOnDemand]: 294/306 looper letters, 212 selfloop transitions, 40 changer transitions 2/255 dead transitions. [2023-08-30 08:24:19,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 255 transitions, 1399 flow [2023-08-30 08:24:19,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 08:24:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 08:24:19,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2217 transitions. [2023-08-30 08:24:19,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175070028011205 [2023-08-30 08:24:19,935 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2217 transitions. [2023-08-30 08:24:19,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2217 transitions. [2023-08-30 08:24:19,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:19,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2217 transitions. [2023-08-30 08:24:19,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 158.35714285714286) internal successors, (2217), 14 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:19,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 306.0) internal successors, (4590), 15 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:19,948 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 306.0) internal successors, (4590), 15 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:19,948 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 139 flow. Second operand 14 states and 2217 transitions. [2023-08-30 08:24:19,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 255 transitions, 1399 flow [2023-08-30 08:24:19,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 255 transitions, 1353 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:19,966 INFO L231 Difference]: Finished difference. Result has 68 places, 81 transitions, 446 flow [2023-08-30 08:24:19,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=446, PETRI_PLACES=68, PETRI_TRANSITIONS=81} [2023-08-30 08:24:19,967 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-08-30 08:24:19,967 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 81 transitions, 446 flow [2023-08-30 08:24:19,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 144.7) internal successors, (1447), 10 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:19,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:19,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:19,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 08:24:20,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 08:24:20,175 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:20,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:20,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1723074253, now seen corresponding path program 1 times [2023-08-30 08:24:20,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:20,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173885790] [2023-08-30 08:24:20,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:20,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:20,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:20,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173885790] [2023-08-30 08:24:20,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173885790] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:20,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:20,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:24:20,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836176134] [2023-08-30 08:24:20,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:20,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:20,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:20,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:20,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:20,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 306 [2023-08-30 08:24:20,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 81 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:20,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:20,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 306 [2023-08-30 08:24:20,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:20,611 INFO L130 PetriNetUnfolder]: 1910/3279 cut-off events. [2023-08-30 08:24:20,612 INFO L131 PetriNetUnfolder]: For 3410/3410 co-relation queries the response was YES. [2023-08-30 08:24:20,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10001 conditions, 3279 events. 1910/3279 cut-off events. For 3410/3410 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 17380 event pairs, 419 based on Foata normal form. 202/3241 useless extension candidates. Maximal degree in co-relation 9336. Up to 2259 conditions per place. [2023-08-30 08:24:20,630 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 66 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-08-30 08:24:20,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 524 flow [2023-08-30 08:24:20,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:20,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:20,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-30 08:24:20,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403050108932462 [2023-08-30 08:24:20,633 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-30 08:24:20,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-30 08:24:20,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:20,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-30 08:24:20,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:20,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:20,637 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:20,637 INFO L175 Difference]: Start difference. First operand has 68 places, 81 transitions, 446 flow. Second operand 3 states and 496 transitions. [2023-08-30 08:24:20,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 524 flow [2023-08-30 08:24:20,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 491 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-08-30 08:24:20,651 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 299 flow [2023-08-30 08:24:20,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-08-30 08:24:20,652 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2023-08-30 08:24:20,653 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 299 flow [2023-08-30 08:24:20,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:20,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:20,653 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:20,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 08:24:20,654 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:20,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:20,654 INFO L85 PathProgramCache]: Analyzing trace with hash -470870337, now seen corresponding path program 1 times [2023-08-30 08:24:20,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:20,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495509758] [2023-08-30 08:24:20,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:20,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:20,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:20,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495509758] [2023-08-30 08:24:20,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495509758] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:20,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411516941] [2023-08-30 08:24:20,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:20,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:20,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:20,739 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:24:20,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 08:24:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:20,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 08:24:20,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:20,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:24:20,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411516941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:20,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:24:20,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-30 08:24:20,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829899987] [2023-08-30 08:24:20,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:20,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:24:20,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:20,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:24:20,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:24:20,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-08-30 08:24:20,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 299 flow. Second operand has 5 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:20,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:20,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-08-30 08:24:20,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:21,346 INFO L130 PetriNetUnfolder]: 1801/3184 cut-off events. [2023-08-30 08:24:21,346 INFO L131 PetriNetUnfolder]: For 3013/3013 co-relation queries the response was YES. [2023-08-30 08:24:21,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9512 conditions, 3184 events. 1801/3184 cut-off events. For 3013/3013 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 15734 event pairs, 527 based on Foata normal form. 250/3196 useless extension candidates. Maximal degree in co-relation 8882. Up to 1653 conditions per place. [2023-08-30 08:24:21,363 INFO L137 encePairwiseOnDemand]: 295/306 looper letters, 92 selfloop transitions, 16 changer transitions 0/109 dead transitions. [2023-08-30 08:24:21,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 109 transitions, 723 flow [2023-08-30 08:24:21,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:24:21,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:24:21,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 931 transitions. [2023-08-30 08:24:21,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070806100217865 [2023-08-30 08:24:21,366 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 931 transitions. [2023-08-30 08:24:21,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 931 transitions. [2023-08-30 08:24:21,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:21,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 931 transitions. [2023-08-30 08:24:21,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.16666666666666) internal successors, (931), 6 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:21,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:21,373 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:21,373 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 299 flow. Second operand 6 states and 931 transitions. [2023-08-30 08:24:21,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 109 transitions, 723 flow [2023-08-30 08:24:21,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 109 transitions, 711 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:21,379 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 403 flow [2023-08-30 08:24:21,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=403, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-08-30 08:24:21,383 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-30 08:24:21,383 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 403 flow [2023-08-30 08:24:21,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:21,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:21,384 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 08:24:21,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 08:24:21,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-30 08:24:21,596 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:21,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:21,596 INFO L85 PathProgramCache]: Analyzing trace with hash -334382920, now seen corresponding path program 1 times [2023-08-30 08:24:21,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:21,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455747277] [2023-08-30 08:24:21,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:21,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:21,646 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:21,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:21,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455747277] [2023-08-30 08:24:21,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455747277] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:21,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:21,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:21,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689771699] [2023-08-30 08:24:21,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:21,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:21,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:21,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:21,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:21,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 306 [2023-08-30 08:24:21,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:21,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:21,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 306 [2023-08-30 08:24:21,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:21,924 INFO L130 PetriNetUnfolder]: 1584/2841 cut-off events. [2023-08-30 08:24:21,924 INFO L131 PetriNetUnfolder]: For 3626/3630 co-relation queries the response was YES. [2023-08-30 08:24:21,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8857 conditions, 2841 events. 1584/2841 cut-off events. For 3626/3630 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 14188 event pairs, 515 based on Foata normal form. 4/2725 useless extension candidates. Maximal degree in co-relation 8360. Up to 2771 conditions per place. [2023-08-30 08:24:21,936 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 66 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2023-08-30 08:24:21,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 72 transitions, 574 flow [2023-08-30 08:24:21,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:21,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:21,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2023-08-30 08:24:21,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5348583877995643 [2023-08-30 08:24:21,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2023-08-30 08:24:21,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2023-08-30 08:24:21,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:21,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2023-08-30 08:24:21,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:21,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:21,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:21,943 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 403 flow. Second operand 3 states and 491 transitions. [2023-08-30 08:24:21,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 72 transitions, 574 flow [2023-08-30 08:24:21,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 566 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 08:24:21,949 INFO L231 Difference]: Finished difference. Result has 64 places, 63 transitions, 393 flow [2023-08-30 08:24:21,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=64, PETRI_TRANSITIONS=63} [2023-08-30 08:24:21,949 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2023-08-30 08:24:21,950 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 63 transitions, 393 flow [2023-08-30 08:24:21,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:21,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:21,950 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 08:24:21,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 08:24:21,951 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:21,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:21,951 INFO L85 PathProgramCache]: Analyzing trace with hash -334382869, now seen corresponding path program 1 times [2023-08-30 08:24:21,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:21,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866297305] [2023-08-30 08:24:21,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:21,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:22,001 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 08:24:22,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:22,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866297305] [2023-08-30 08:24:22,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866297305] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:22,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:22,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:22,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778285256] [2023-08-30 08:24:22,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:22,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:22,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:22,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:22,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:22,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 306 [2023-08-30 08:24:22,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 393 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:22,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:22,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 306 [2023-08-30 08:24:22,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:22,236 INFO L130 PetriNetUnfolder]: 1421/2560 cut-off events. [2023-08-30 08:24:22,236 INFO L131 PetriNetUnfolder]: For 3186/3190 co-relation queries the response was YES. [2023-08-30 08:24:22,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7985 conditions, 2560 events. 1421/2560 cut-off events. For 3186/3190 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 12303 event pairs, 395 based on Foata normal form. 4/2558 useless extension candidates. Maximal degree in co-relation 4718. Up to 1498 conditions per place. [2023-08-30 08:24:22,251 INFO L137 encePairwiseOnDemand]: 302/306 looper letters, 74 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-08-30 08:24:22,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 83 transitions, 652 flow [2023-08-30 08:24:22,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:22,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:22,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-30 08:24:22,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403050108932462 [2023-08-30 08:24:22,253 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-30 08:24:22,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-30 08:24:22,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:22,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-30 08:24:22,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:22,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:22,257 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:22,257 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 393 flow. Second operand 3 states and 496 transitions. [2023-08-30 08:24:22,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 83 transitions, 652 flow [2023-08-30 08:24:22,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 83 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:22,265 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 405 flow [2023-08-30 08:24:22,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-08-30 08:24:22,266 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-30 08:24:22,266 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 405 flow [2023-08-30 08:24:22,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:22,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:22,267 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:22,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 08:24:22,267 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:22,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:22,267 INFO L85 PathProgramCache]: Analyzing trace with hash -591784532, now seen corresponding path program 1 times [2023-08-30 08:24:22,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:22,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343533056] [2023-08-30 08:24:22,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:22,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:22,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:22,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343533056] [2023-08-30 08:24:22,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343533056] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:22,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:22,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:24:22,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872965937] [2023-08-30 08:24:22,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:22,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:24:22,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:22,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:24:22,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:24:22,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 306 [2023-08-30 08:24:22,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:22,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:22,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 306 [2023-08-30 08:24:22,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:22,628 INFO L130 PetriNetUnfolder]: 1424/2553 cut-off events. [2023-08-30 08:24:22,628 INFO L131 PetriNetUnfolder]: For 4190/4190 co-relation queries the response was YES. [2023-08-30 08:24:22,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8363 conditions, 2553 events. 1424/2553 cut-off events. For 4190/4190 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 12080 event pairs, 1086 based on Foata normal form. 18/2565 useless extension candidates. Maximal degree in co-relation 7946. Up to 2415 conditions per place. [2023-08-30 08:24:22,641 INFO L137 encePairwiseOnDemand]: 301/306 looper letters, 58 selfloop transitions, 6 changer transitions 9/74 dead transitions. [2023-08-30 08:24:22,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 595 flow [2023-08-30 08:24:22,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:24:22,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:24:22,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2023-08-30 08:24:22,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089869281045751 [2023-08-30 08:24:22,644 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2023-08-30 08:24:22,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2023-08-30 08:24:22,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:22,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2023-08-30 08:24:22,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:22,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 306.0) internal successors, (1530), 5 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:22,649 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 306.0) internal successors, (1530), 5 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:22,649 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 405 flow. Second operand 4 states and 623 transitions. [2023-08-30 08:24:22,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 595 flow [2023-08-30 08:24:22,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 587 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:22,656 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 398 flow [2023-08-30 08:24:22,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=398, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-08-30 08:24:22,657 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-08-30 08:24:22,657 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 398 flow [2023-08-30 08:24:22,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:22,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:22,658 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:22,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 08:24:22,658 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:22,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:22,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1049374055, now seen corresponding path program 1 times [2023-08-30 08:24:22,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:22,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024745554] [2023-08-30 08:24:22,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:22,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:22,765 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:22,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:22,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024745554] [2023-08-30 08:24:22,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024745554] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:22,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454886937] [2023-08-30 08:24:22,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:22,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:22,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:22,767 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:24:22,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 08:24:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:22,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 08:24:22,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:22,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:24:22,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454886937] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:22,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:24:22,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-08-30 08:24:22,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177919895] [2023-08-30 08:24:22,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:22,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:24:22,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:22,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:24:22,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-30 08:24:22,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 306 [2023-08-30 08:24:22,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 398 flow. Second operand has 5 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:22,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:22,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 306 [2023-08-30 08:24:22,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:23,250 INFO L130 PetriNetUnfolder]: 1361/2424 cut-off events. [2023-08-30 08:24:23,251 INFO L131 PetriNetUnfolder]: For 4092/4092 co-relation queries the response was YES. [2023-08-30 08:24:23,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8175 conditions, 2424 events. 1361/2424 cut-off events. For 4092/4092 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 10945 event pairs, 405 based on Foata normal form. 22/2440 useless extension candidates. Maximal degree in co-relation 7743. Up to 1340 conditions per place. [2023-08-30 08:24:23,264 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 74 selfloop transitions, 19 changer transitions 0/94 dead transitions. [2023-08-30 08:24:23,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 784 flow [2023-08-30 08:24:23,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:24:23,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:24:23,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 914 transitions. [2023-08-30 08:24:23,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49782135076252726 [2023-08-30 08:24:23,268 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 914 transitions. [2023-08-30 08:24:23,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 914 transitions. [2023-08-30 08:24:23,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:23,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 914 transitions. [2023-08-30 08:24:23,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:23,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:23,274 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:23,274 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 398 flow. Second operand 6 states and 914 transitions. [2023-08-30 08:24:23,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 784 flow [2023-08-30 08:24:23,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 94 transitions, 770 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 08:24:23,282 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 540 flow [2023-08-30 08:24:23,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=540, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-08-30 08:24:23,283 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2023-08-30 08:24:23,283 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 540 flow [2023-08-30 08:24:23,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:23,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:23,284 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:23,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 08:24:23,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:23,490 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:23,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:23,490 INFO L85 PathProgramCache]: Analyzing trace with hash -733508628, now seen corresponding path program 1 times [2023-08-30 08:24:23,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:23,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691811254] [2023-08-30 08:24:23,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:23,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:23,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:23,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691811254] [2023-08-30 08:24:23,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691811254] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:23,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:23,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:24:23,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812036271] [2023-08-30 08:24:23,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:23,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:24:23,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:23,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:24:23,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:24:23,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-08-30 08:24:23,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 540 flow. Second operand has 5 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:23,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:23,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-08-30 08:24:23,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:23,954 INFO L130 PetriNetUnfolder]: 1410/2523 cut-off events. [2023-08-30 08:24:23,954 INFO L131 PetriNetUnfolder]: For 4800/4800 co-relation queries the response was YES. [2023-08-30 08:24:23,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8765 conditions, 2523 events. 1410/2523 cut-off events. For 4800/4800 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 11570 event pairs, 275 based on Foata normal form. 8/2525 useless extension candidates. Maximal degree in co-relation 8322. Up to 1338 conditions per place. [2023-08-30 08:24:23,968 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 87 selfloop transitions, 19 changer transitions 0/107 dead transitions. [2023-08-30 08:24:23,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 107 transitions, 940 flow [2023-08-30 08:24:23,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:24:23,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:24:23,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 771 transitions. [2023-08-30 08:24:23,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503921568627451 [2023-08-30 08:24:23,972 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 771 transitions. [2023-08-30 08:24:23,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 771 transitions. [2023-08-30 08:24:23,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:23,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 771 transitions. [2023-08-30 08:24:23,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.2) internal successors, (771), 5 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:23,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:23,977 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:23,978 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 540 flow. Second operand 5 states and 771 transitions. [2023-08-30 08:24:23,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 107 transitions, 940 flow [2023-08-30 08:24:23,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 107 transitions, 931 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 08:24:23,988 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 612 flow [2023-08-30 08:24:23,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=612, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2023-08-30 08:24:23,988 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2023-08-30 08:24:23,989 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 612 flow [2023-08-30 08:24:23,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:23,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:23,989 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-30 08:24:23,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 08:24:23,990 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:23,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:23,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1545815804, now seen corresponding path program 1 times [2023-08-30 08:24:23,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:23,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068627139] [2023-08-30 08:24:23,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:23,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:24,141 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:24,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:24,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068627139] [2023-08-30 08:24:24,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068627139] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:24,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567792244] [2023-08-30 08:24:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:24,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:24,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:24,143 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:24:24,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 08:24:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:24,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 08:24:24,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:24,322 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:24,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:24,432 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:24,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567792244] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:24,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:24,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 08:24:24,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267472392] [2023-08-30 08:24:24,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:24,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 08:24:24,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:24,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 08:24:24,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-30 08:24:24,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-08-30 08:24:24,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 612 flow. Second operand has 18 states, 18 states have (on average 145.05555555555554) internal successors, (2611), 18 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:24,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:24,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-08-30 08:24:24,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:25,331 INFO L130 PetriNetUnfolder]: 2450/4359 cut-off events. [2023-08-30 08:24:25,332 INFO L131 PetriNetUnfolder]: For 13104/13104 co-relation queries the response was YES. [2023-08-30 08:24:25,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15858 conditions, 4359 events. 2450/4359 cut-off events. For 13104/13104 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 19534 event pairs, 373 based on Foata normal form. 100/4459 useless extension candidates. Maximal degree in co-relation 15200. Up to 873 conditions per place. [2023-08-30 08:24:25,352 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 250 selfloop transitions, 62 changer transitions 0/313 dead transitions. [2023-08-30 08:24:25,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 313 transitions, 2626 flow [2023-08-30 08:24:25,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 08:24:25,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 08:24:25,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2934 transitions. [2023-08-30 08:24:25,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046439628482973 [2023-08-30 08:24:25,360 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2934 transitions. [2023-08-30 08:24:25,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2934 transitions. [2023-08-30 08:24:25,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:25,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2934 transitions. [2023-08-30 08:24:25,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.42105263157896) internal successors, (2934), 19 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:25,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 306.0) internal successors, (6120), 20 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:25,376 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 306.0) internal successors, (6120), 20 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:25,376 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 612 flow. Second operand 19 states and 2934 transitions. [2023-08-30 08:24:25,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 313 transitions, 2626 flow [2023-08-30 08:24:25,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 313 transitions, 2606 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:25,391 INFO L231 Difference]: Finished difference. Result has 93 places, 105 transitions, 1228 flow [2023-08-30 08:24:25,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1228, PETRI_PLACES=93, PETRI_TRANSITIONS=105} [2023-08-30 08:24:25,391 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 51 predicate places. [2023-08-30 08:24:25,391 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 105 transitions, 1228 flow [2023-08-30 08:24:25,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 145.05555555555554) internal successors, (2611), 18 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:25,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:25,393 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:25,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 08:24:25,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:25,599 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:25,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:25,599 INFO L85 PathProgramCache]: Analyzing trace with hash 921312875, now seen corresponding path program 2 times [2023-08-30 08:24:25,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:25,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087392007] [2023-08-30 08:24:25,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:25,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:25,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:25,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087392007] [2023-08-30 08:24:25,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087392007] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:25,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:25,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 08:24:25,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587693272] [2023-08-30 08:24:25,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:25,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:24:25,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:25,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:24:25,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:24:25,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:24:25,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 105 transitions, 1228 flow. Second operand has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:25,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:25,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:24:25,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:26,405 INFO L130 PetriNetUnfolder]: 2313/4164 cut-off events. [2023-08-30 08:24:26,405 INFO L131 PetriNetUnfolder]: For 14098/14098 co-relation queries the response was YES. [2023-08-30 08:24:26,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15657 conditions, 4164 events. 2313/4164 cut-off events. For 14098/14098 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18763 event pairs, 300 based on Foata normal form. 72/4236 useless extension candidates. Maximal degree in co-relation 14958. Up to 2986 conditions per place. [2023-08-30 08:24:26,434 INFO L137 encePairwiseOnDemand]: 294/306 looper letters, 70 selfloop transitions, 54 changer transitions 0/125 dead transitions. [2023-08-30 08:24:26,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 125 transitions, 1405 flow [2023-08-30 08:24:26,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 08:24:26,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 08:24:26,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1126 transitions. [2023-08-30 08:24:26,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599673202614379 [2023-08-30 08:24:26,438 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1126 transitions. [2023-08-30 08:24:26,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1126 transitions. [2023-08-30 08:24:26,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:26,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1126 transitions. [2023-08-30 08:24:26,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:26,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:26,444 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:26,445 INFO L175 Difference]: Start difference. First operand has 93 places, 105 transitions, 1228 flow. Second operand 8 states and 1126 transitions. [2023-08-30 08:24:26,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 125 transitions, 1405 flow [2023-08-30 08:24:26,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 125 transitions, 1231 flow, removed 60 selfloop flow, removed 9 redundant places. [2023-08-30 08:24:26,468 INFO L231 Difference]: Finished difference. Result has 90 places, 90 transitions, 937 flow [2023-08-30 08:24:26,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=937, PETRI_PLACES=90, PETRI_TRANSITIONS=90} [2023-08-30 08:24:26,469 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2023-08-30 08:24:26,469 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 90 transitions, 937 flow [2023-08-30 08:24:26,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:26,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:26,469 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:26,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 08:24:26,470 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:26,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:26,470 INFO L85 PathProgramCache]: Analyzing trace with hash 921312938, now seen corresponding path program 2 times [2023-08-30 08:24:26,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:26,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683814906] [2023-08-30 08:24:26,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:26,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:24:26,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:26,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683814906] [2023-08-30 08:24:26,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683814906] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:26,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167905052] [2023-08-30 08:24:26,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:24:26,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:26,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:26,654 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:24:26,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 08:24:26,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:24:26,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:24:26,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 08:24:26,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:26,832 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:26,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:26,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167905052] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:26,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:26,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 11 [2023-08-30 08:24:26,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831046118] [2023-08-30 08:24:26,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:26,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 08:24:26,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:26,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 08:24:26,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-30 08:24:27,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:24:27,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 90 transitions, 937 flow. Second operand has 13 states, 13 states have (on average 138.23076923076923) internal successors, (1797), 13 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:27,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:27,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:24:27,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:27,716 INFO L130 PetriNetUnfolder]: 2908/5229 cut-off events. [2023-08-30 08:24:27,716 INFO L131 PetriNetUnfolder]: For 15002/15002 co-relation queries the response was YES. [2023-08-30 08:24:27,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19101 conditions, 5229 events. 2908/5229 cut-off events. For 15002/15002 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 25037 event pairs, 441 based on Foata normal form. 38/5267 useless extension candidates. Maximal degree in co-relation 18365. Up to 2471 conditions per place. [2023-08-30 08:24:27,751 INFO L137 encePairwiseOnDemand]: 295/306 looper letters, 183 selfloop transitions, 46 changer transitions 0/230 dead transitions. [2023-08-30 08:24:27,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 230 transitions, 2187 flow [2023-08-30 08:24:27,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 08:24:27,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 08:24:27,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2149 transitions. [2023-08-30 08:24:27,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681917211328976 [2023-08-30 08:24:27,757 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2149 transitions. [2023-08-30 08:24:27,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2149 transitions. [2023-08-30 08:24:27,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:27,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2149 transitions. [2023-08-30 08:24:27,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 143.26666666666668) internal successors, (2149), 15 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:27,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:27,768 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:27,768 INFO L175 Difference]: Start difference. First operand has 90 places, 90 transitions, 937 flow. Second operand 15 states and 2149 transitions. [2023-08-30 08:24:27,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 230 transitions, 2187 flow [2023-08-30 08:24:27,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 230 transitions, 2127 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-30 08:24:27,801 INFO L231 Difference]: Finished difference. Result has 108 places, 112 transitions, 1342 flow [2023-08-30 08:24:27,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1342, PETRI_PLACES=108, PETRI_TRANSITIONS=112} [2023-08-30 08:24:27,801 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 66 predicate places. [2023-08-30 08:24:27,802 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 112 transitions, 1342 flow [2023-08-30 08:24:27,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 138.23076923076923) internal successors, (1797), 13 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:27,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:27,802 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:27,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 08:24:28,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 08:24:28,009 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:28,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:28,009 INFO L85 PathProgramCache]: Analyzing trace with hash 810645160, now seen corresponding path program 3 times [2023-08-30 08:24:28,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:28,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253881032] [2023-08-30 08:24:28,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:28,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:28,351 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:24:28,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:28,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253881032] [2023-08-30 08:24:28,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253881032] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:28,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20132165] [2023-08-30 08:24:28,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 08:24:28,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:28,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:28,354 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:24:28,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 08:24:28,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-30 08:24:28,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:24:28,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 08:24:28,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:28,636 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:28,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:28,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20132165] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:28,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:28,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2023-08-30 08:24:28,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839742538] [2023-08-30 08:24:28,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:28,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 08:24:28,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:28,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 08:24:28,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2023-08-30 08:24:28,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:24:28,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 112 transitions, 1342 flow. Second operand has 21 states, 21 states have (on average 137.76190476190476) internal successors, (2893), 21 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:28,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:28,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:24:28,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:29,955 INFO L130 PetriNetUnfolder]: 3558/6375 cut-off events. [2023-08-30 08:24:29,955 INFO L131 PetriNetUnfolder]: For 24520/24520 co-relation queries the response was YES. [2023-08-30 08:24:29,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24167 conditions, 6375 events. 3558/6375 cut-off events. For 24520/24520 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 32125 event pairs, 485 based on Foata normal form. 48/6423 useless extension candidates. Maximal degree in co-relation 23859. Up to 1321 conditions per place. [2023-08-30 08:24:29,979 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 269 selfloop transitions, 91 changer transitions 0/361 dead transitions. [2023-08-30 08:24:29,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 361 transitions, 3446 flow [2023-08-30 08:24:29,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 08:24:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 08:24:29,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3586 transitions. [2023-08-30 08:24:29,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875816993464053 [2023-08-30 08:24:29,986 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3586 transitions. [2023-08-30 08:24:29,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3586 transitions. [2023-08-30 08:24:29,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:29,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3586 transitions. [2023-08-30 08:24:29,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 143.44) internal successors, (3586), 25 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:30,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 306.0) internal successors, (7956), 26 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:30,003 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 306.0) internal successors, (7956), 26 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:30,003 INFO L175 Difference]: Start difference. First operand has 108 places, 112 transitions, 1342 flow. Second operand 25 states and 3586 transitions. [2023-08-30 08:24:30,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 361 transitions, 3446 flow [2023-08-30 08:24:30,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 361 transitions, 3362 flow, removed 40 selfloop flow, removed 2 redundant places. [2023-08-30 08:24:30,056 INFO L231 Difference]: Finished difference. Result has 138 places, 139 transitions, 1991 flow [2023-08-30 08:24:30,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1991, PETRI_PLACES=138, PETRI_TRANSITIONS=139} [2023-08-30 08:24:30,057 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 96 predicate places. [2023-08-30 08:24:30,057 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 139 transitions, 1991 flow [2023-08-30 08:24:30,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 137.76190476190476) internal successors, (2893), 21 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:30,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:30,058 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1] [2023-08-30 08:24:30,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 08:24:30,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 08:24:30,265 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:30,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:30,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1147695864, now seen corresponding path program 2 times [2023-08-30 08:24:30,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:30,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800541452] [2023-08-30 08:24:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:30,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:30,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:30,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800541452] [2023-08-30 08:24:30,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800541452] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:30,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895377780] [2023-08-30 08:24:30,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:24:30,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:30,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:30,619 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:24:30,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 08:24:30,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:24:30,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:24:30,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 08:24:30,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:30,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:31,163 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:31,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895377780] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:31,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:31,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-08-30 08:24:31,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332577143] [2023-08-30 08:24:31,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:31,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 08:24:31,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:31,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 08:24:31,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-08-30 08:24:31,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 306 [2023-08-30 08:24:31,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 139 transitions, 1991 flow. Second operand has 34 states, 34 states have (on average 145.02941176470588) internal successors, (4931), 34 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:31,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:31,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 306 [2023-08-30 08:24:31,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:33,335 INFO L130 PetriNetUnfolder]: 5858/10531 cut-off events. [2023-08-30 08:24:33,336 INFO L131 PetriNetUnfolder]: For 57270/57270 co-relation queries the response was YES. [2023-08-30 08:24:33,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41208 conditions, 10531 events. 5858/10531 cut-off events. For 57270/57270 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 51478 event pairs, 939 based on Foata normal form. 240/10771 useless extension candidates. Maximal degree in co-relation 40832. Up to 2778 conditions per place. [2023-08-30 08:24:33,391 INFO L137 encePairwiseOnDemand]: 299/306 looper letters, 496 selfloop transitions, 115 changer transitions 0/612 dead transitions. [2023-08-30 08:24:33,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 612 transitions, 6061 flow [2023-08-30 08:24:33,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-30 08:24:33,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-30 08:24:33,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5387 transitions. [2023-08-30 08:24:33,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029878618113912 [2023-08-30 08:24:33,399 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5387 transitions. [2023-08-30 08:24:33,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5387 transitions. [2023-08-30 08:24:33,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:33,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5387 transitions. [2023-08-30 08:24:33,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 153.9142857142857) internal successors, (5387), 35 states have internal predecessors, (5387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:33,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 306.0) internal successors, (11016), 36 states have internal predecessors, (11016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:33,425 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 306.0) internal successors, (11016), 36 states have internal predecessors, (11016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:33,425 INFO L175 Difference]: Start difference. First operand has 138 places, 139 transitions, 1991 flow. Second operand 35 states and 5387 transitions. [2023-08-30 08:24:33,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 612 transitions, 6061 flow [2023-08-30 08:24:33,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 612 transitions, 5944 flow, removed 40 selfloop flow, removed 8 redundant places. [2023-08-30 08:24:33,546 INFO L231 Difference]: Finished difference. Result has 172 places, 196 transitions, 3174 flow [2023-08-30 08:24:33,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1784, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3174, PETRI_PLACES=172, PETRI_TRANSITIONS=196} [2023-08-30 08:24:33,547 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2023-08-30 08:24:33,547 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 196 transitions, 3174 flow [2023-08-30 08:24:33,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 145.02941176470588) internal successors, (4931), 34 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:33,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:33,548 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:33,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 08:24:33,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:33,754 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:33,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:33,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1905252954, now seen corresponding path program 4 times [2023-08-30 08:24:33,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:33,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206683459] [2023-08-30 08:24:33,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:33,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:34,250 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:34,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:34,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206683459] [2023-08-30 08:24:34,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206683459] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:34,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938289956] [2023-08-30 08:24:34,251 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 08:24:34,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:34,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:34,253 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:24:34,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 08:24:34,455 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 08:24:34,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:24:34,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 08:24:34,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:34,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:34,762 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:34,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938289956] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:34,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:34,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 27 [2023-08-30 08:24:34,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920942843] [2023-08-30 08:24:34,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:34,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 08:24:34,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:34,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 08:24:34,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2023-08-30 08:24:34,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:24:34,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 196 transitions, 3174 flow. Second operand has 29 states, 29 states have (on average 137.55172413793105) internal successors, (3989), 29 states have internal predecessors, (3989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:34,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:34,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:24:34,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:37,744 INFO L130 PetriNetUnfolder]: 8021/14364 cut-off events. [2023-08-30 08:24:37,744 INFO L131 PetriNetUnfolder]: For 84336/84336 co-relation queries the response was YES. [2023-08-30 08:24:37,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57943 conditions, 14364 events. 8021/14364 cut-off events. For 84336/84336 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 76194 event pairs, 771 based on Foata normal form. 96/14460 useless extension candidates. Maximal degree in co-relation 56728. Up to 2988 conditions per place. [2023-08-30 08:24:37,829 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 405 selfloop transitions, 216 changer transitions 0/622 dead transitions. [2023-08-30 08:24:37,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 622 transitions, 7379 flow [2023-08-30 08:24:37,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-30 08:24:37,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-30 08:24:37,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 5565 transitions. [2023-08-30 08:24:37,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4663147310206134 [2023-08-30 08:24:37,834 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 5565 transitions. [2023-08-30 08:24:37,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 5565 transitions. [2023-08-30 08:24:37,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:37,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 5565 transitions. [2023-08-30 08:24:37,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 142.69230769230768) internal successors, (5565), 39 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:37,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 306.0) internal successors, (12240), 40 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:37,853 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 306.0) internal successors, (12240), 40 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:37,854 INFO L175 Difference]: Start difference. First operand has 172 places, 196 transitions, 3174 flow. Second operand 39 states and 5565 transitions. [2023-08-30 08:24:37,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 622 transitions, 7379 flow [2023-08-30 08:24:38,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 622 transitions, 6960 flow, removed 162 selfloop flow, removed 13 redundant places. [2023-08-30 08:24:38,011 INFO L231 Difference]: Finished difference. Result has 208 places, 288 transitions, 4970 flow [2023-08-30 08:24:38,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=2816, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=4970, PETRI_PLACES=208, PETRI_TRANSITIONS=288} [2023-08-30 08:24:38,011 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 166 predicate places. [2023-08-30 08:24:38,012 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 288 transitions, 4970 flow [2023-08-30 08:24:38,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 137.55172413793105) internal successors, (3989), 29 states have internal predecessors, (3989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:38,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:38,013 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:38,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 08:24:38,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:38,222 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:38,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:38,223 INFO L85 PathProgramCache]: Analyzing trace with hash 2029433002, now seen corresponding path program 1 times [2023-08-30 08:24:38,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:38,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587080761] [2023-08-30 08:24:38,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:38,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:38,725 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:24:38,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:38,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587080761] [2023-08-30 08:24:38,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587080761] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:38,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17529543] [2023-08-30 08:24:38,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:38,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:38,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:38,728 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:24:38,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 08:24:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:38,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 08:24:38,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:39,135 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:24:39,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:39,333 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:24:39,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17529543] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:39,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:39,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 26 [2023-08-30 08:24:39,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567706100] [2023-08-30 08:24:39,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:39,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-30 08:24:39,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:39,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-30 08:24:39,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2023-08-30 08:24:39,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:24:39,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 288 transitions, 4970 flow. Second operand has 28 states, 28 states have (on average 137.85714285714286) internal successors, (3860), 28 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:39,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:39,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:24:39,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:43,799 INFO L130 PetriNetUnfolder]: 11730/21007 cut-off events. [2023-08-30 08:24:43,799 INFO L131 PetriNetUnfolder]: For 139704/139704 co-relation queries the response was YES. [2023-08-30 08:24:43,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86630 conditions, 21007 events. 11730/21007 cut-off events. For 139704/139704 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 124637 event pairs, 1301 based on Foata normal form. 166/21173 useless extension candidates. Maximal degree in co-relation 85090. Up to 4457 conditions per place. [2023-08-30 08:24:43,951 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 387 selfloop transitions, 384 changer transitions 0/772 dead transitions. [2023-08-30 08:24:43,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 772 transitions, 11415 flow [2023-08-30 08:24:43,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-30 08:24:43,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-30 08:24:43,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 4723 transitions. [2023-08-30 08:24:43,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46771637948108535 [2023-08-30 08:24:43,957 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 4723 transitions. [2023-08-30 08:24:43,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 4723 transitions. [2023-08-30 08:24:43,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:43,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 4723 transitions. [2023-08-30 08:24:43,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 143.12121212121212) internal successors, (4723), 33 states have internal predecessors, (4723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:43,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 306.0) internal successors, (10404), 34 states have internal predecessors, (10404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:43,973 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 306.0) internal successors, (10404), 34 states have internal predecessors, (10404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:43,973 INFO L175 Difference]: Start difference. First operand has 208 places, 288 transitions, 4970 flow. Second operand 33 states and 4723 transitions. [2023-08-30 08:24:43,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 772 transitions, 11415 flow [2023-08-30 08:24:44,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 772 transitions, 10697 flow, removed 273 selfloop flow, removed 13 redundant places. [2023-08-30 08:24:44,404 INFO L231 Difference]: Finished difference. Result has 237 places, 488 transitions, 9122 flow [2023-08-30 08:24:44,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4624, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=9122, PETRI_PLACES=237, PETRI_TRANSITIONS=488} [2023-08-30 08:24:44,405 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 195 predicate places. [2023-08-30 08:24:44,405 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 488 transitions, 9122 flow [2023-08-30 08:24:44,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 137.85714285714286) internal successors, (3860), 28 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:44,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:44,406 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:44,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 08:24:44,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:44,607 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:44,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:44,607 INFO L85 PathProgramCache]: Analyzing trace with hash 792853539, now seen corresponding path program 5 times [2023-08-30 08:24:44,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:44,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675474633] [2023-08-30 08:24:44,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:44,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:24:45,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:45,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675474633] [2023-08-30 08:24:45,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675474633] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:45,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512172562] [2023-08-30 08:24:45,291 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 08:24:45,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:45,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:45,293 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:24:45,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 08:24:45,859 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-08-30 08:24:45,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:24:45,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 08:24:45,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:45,978 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:45,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:46,352 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:46,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512172562] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:46,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:46,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 18] total 39 [2023-08-30 08:24:46,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314040583] [2023-08-30 08:24:46,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:46,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-30 08:24:46,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:46,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-30 08:24:46,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=1235, Unknown=0, NotChecked=0, Total=1640 [2023-08-30 08:24:46,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:24:46,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 488 transitions, 9122 flow. Second operand has 41 states, 41 states have (on average 137.390243902439) internal successors, (5633), 41 states have internal predecessors, (5633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:46,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:46,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:24:46,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:53,135 INFO L130 PetriNetUnfolder]: 15387/27478 cut-off events. [2023-08-30 08:24:53,135 INFO L131 PetriNetUnfolder]: For 211558/211558 co-relation queries the response was YES. [2023-08-30 08:24:53,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116852 conditions, 27478 events. 15387/27478 cut-off events. For 211558/211558 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 169509 event pairs, 2195 based on Foata normal form. 160/27638 useless extension candidates. Maximal degree in co-relation 115019. Up to 5830 conditions per place. [2023-08-30 08:24:53,428 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 669 selfloop transitions, 469 changer transitions 0/1139 dead transitions. [2023-08-30 08:24:53,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 1139 transitions, 16944 flow [2023-08-30 08:24:53,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-08-30 08:24:53,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-08-30 08:24:53,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7184 transitions. [2023-08-30 08:24:53,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46954248366013074 [2023-08-30 08:24:53,435 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7184 transitions. [2023-08-30 08:24:53,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7184 transitions. [2023-08-30 08:24:53,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:53,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7184 transitions. [2023-08-30 08:24:53,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 143.68) internal successors, (7184), 50 states have internal predecessors, (7184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:53,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 306.0) internal successors, (15606), 51 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:53,453 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 306.0) internal successors, (15606), 51 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:53,453 INFO L175 Difference]: Start difference. First operand has 237 places, 488 transitions, 9122 flow. Second operand 50 states and 7184 transitions. [2023-08-30 08:24:53,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 1139 transitions, 16944 flow [2023-08-30 08:24:54,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 1139 transitions, 16381 flow, removed 222 selfloop flow, removed 7 redundant places. [2023-08-30 08:24:54,270 INFO L231 Difference]: Finished difference. Result has 298 places, 628 transitions, 13384 flow [2023-08-30 08:24:54,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=8696, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=13384, PETRI_PLACES=298, PETRI_TRANSITIONS=628} [2023-08-30 08:24:54,270 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2023-08-30 08:24:54,270 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 628 transitions, 13384 flow [2023-08-30 08:24:54,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 137.390243902439) internal successors, (5633), 41 states have internal predecessors, (5633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:54,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:54,271 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:54,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 08:24:54,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-30 08:24:54,472 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:54,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:54,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1862134967, now seen corresponding path program 2 times [2023-08-30 08:24:54,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:54,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872613804] [2023-08-30 08:24:54,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:54,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:55,310 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:24:55,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:55,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872613804] [2023-08-30 08:24:55,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872613804] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:55,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217089983] [2023-08-30 08:24:55,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:24:55,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:55,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:55,313 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:24:55,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 08:24:55,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:24:55,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:24:55,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 08:24:55,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:55,711 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:24:55,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:56,053 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:24:56,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217089983] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:56,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:56,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 38 [2023-08-30 08:24:56,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995949150] [2023-08-30 08:24:56,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:56,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-30 08:24:56,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:56,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-30 08:24:56,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1210, Unknown=0, NotChecked=0, Total=1560 [2023-08-30 08:24:56,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:24:56,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 628 transitions, 13384 flow. Second operand has 40 states, 40 states have (on average 137.6) internal successors, (5504), 40 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:56,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:56,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:24:56,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:25:05,980 INFO L130 PetriNetUnfolder]: 19671/35170 cut-off events. [2023-08-30 08:25:05,980 INFO L131 PetriNetUnfolder]: For 319324/319324 co-relation queries the response was YES. [2023-08-30 08:25:06,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154708 conditions, 35170 events. 19671/35170 cut-off events. For 319324/319324 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 228920 event pairs, 2231 based on Foata normal form. 234/35404 useless extension candidates. Maximal degree in co-relation 152762. Up to 7561 conditions per place. [2023-08-30 08:25:06,880 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 512 selfloop transitions, 778 changer transitions 0/1291 dead transitions. [2023-08-30 08:25:06,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1291 transitions, 22541 flow [2023-08-30 08:25:06,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-08-30 08:25:06,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-08-30 08:25:06,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7149 transitions. [2023-08-30 08:25:06,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46725490196078434 [2023-08-30 08:25:06,889 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7149 transitions. [2023-08-30 08:25:06,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7149 transitions. [2023-08-30 08:25:06,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:25:06,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7149 transitions. [2023-08-30 08:25:06,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 142.98) internal successors, (7149), 50 states have internal predecessors, (7149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:06,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 306.0) internal successors, (15606), 51 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:06,914 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 306.0) internal successors, (15606), 51 states have internal predecessors, (15606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:06,914 INFO L175 Difference]: Start difference. First operand has 298 places, 628 transitions, 13384 flow. Second operand 50 states and 7149 transitions. [2023-08-30 08:25:06,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1291 transitions, 22541 flow [2023-08-30 08:25:08,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 1291 transitions, 21593 flow, removed 353 selfloop flow, removed 17 redundant places. [2023-08-30 08:25:08,570 INFO L231 Difference]: Finished difference. Result has 342 places, 846 transitions, 19346 flow [2023-08-30 08:25:08,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=12377, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=568, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=19346, PETRI_PLACES=342, PETRI_TRANSITIONS=846} [2023-08-30 08:25:08,571 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 300 predicate places. [2023-08-30 08:25:08,571 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 846 transitions, 19346 flow [2023-08-30 08:25:08,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 137.6) internal successors, (5504), 40 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:08,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:25:08,572 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:25:08,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 08:25:08,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-30 08:25:08,779 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:25:08,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:25:08,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1131368074, now seen corresponding path program 3 times [2023-08-30 08:25:08,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:25:08,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371986025] [2023-08-30 08:25:08,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:25:08,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:25:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:25:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 271 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 08:25:09,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:25:09,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371986025] [2023-08-30 08:25:09,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371986025] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:25:09,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557239468] [2023-08-30 08:25:09,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 08:25:09,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:25:09,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:25:09,665 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:25:09,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 08:25:10,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-08-30 08:25:10,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:25:10,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 08:25:10,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:25:10,352 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:25:10,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:25:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:25:11,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557239468] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:25:11,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:25:11,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 14] total 33 [2023-08-30 08:25:11,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677710381] [2023-08-30 08:25:11,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:25:11,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-30 08:25:11,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:25:11,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-30 08:25:11,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=942, Unknown=0, NotChecked=0, Total=1190 [2023-08-30 08:25:11,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:25:11,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 846 transitions, 19346 flow. Second operand has 35 states, 35 states have (on average 137.9142857142857) internal successors, (4827), 35 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:11,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:25:11,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:25:11,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:25:31,572 INFO L130 PetriNetUnfolder]: 33608/60213 cut-off events. [2023-08-30 08:25:31,573 INFO L131 PetriNetUnfolder]: For 533538/533538 co-relation queries the response was YES. [2023-08-30 08:25:32,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275460 conditions, 60213 events. 33608/60213 cut-off events. For 533538/533538 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 421723 event pairs, 4963 based on Foata normal form. 132/60345 useless extension candidates. Maximal degree in co-relation 273438. Up to 13087 conditions per place. [2023-08-30 08:25:33,098 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 670 selfloop transitions, 1366 changer transitions 0/2037 dead transitions. [2023-08-30 08:25:33,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 2037 transitions, 44227 flow [2023-08-30 08:25:33,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-30 08:25:33,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-30 08:25:33,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 5852 transitions. [2023-08-30 08:25:33,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4664434879642914 [2023-08-30 08:25:33,109 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 5852 transitions. [2023-08-30 08:25:33,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 5852 transitions. [2023-08-30 08:25:33,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:25:33,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 5852 transitions. [2023-08-30 08:25:33,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 142.73170731707316) internal successors, (5852), 41 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:33,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 306.0) internal successors, (12852), 42 states have internal predecessors, (12852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:33,130 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 306.0) internal successors, (12852), 42 states have internal predecessors, (12852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:33,131 INFO L175 Difference]: Start difference. First operand has 342 places, 846 transitions, 19346 flow. Second operand 41 states and 5852 transitions. [2023-08-30 08:25:33,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 2037 transitions, 44227 flow [2023-08-30 08:25:36,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 2037 transitions, 41632 flow, removed 992 selfloop flow, removed 14 redundant places. [2023-08-30 08:25:36,988 INFO L231 Difference]: Finished difference. Result has 381 places, 1646 transitions, 39905 flow [2023-08-30 08:25:36,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=18358, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=844, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=709, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=39905, PETRI_PLACES=381, PETRI_TRANSITIONS=1646} [2023-08-30 08:25:36,990 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 339 predicate places. [2023-08-30 08:25:36,990 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 1646 transitions, 39905 flow [2023-08-30 08:25:36,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 137.9142857142857) internal successors, (4827), 35 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:36,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:25:36,991 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:25:36,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-30 08:25:37,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-30 08:25:37,192 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:25:37,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:25:37,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1735374202, now seen corresponding path program 4 times [2023-08-30 08:25:37,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:25:37,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922115886] [2023-08-30 08:25:37,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:25:37,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:25:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:25:38,278 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:25:38,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:25:38,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922115886] [2023-08-30 08:25:38,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922115886] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:25:38,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720583139] [2023-08-30 08:25:38,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 08:25:38,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:25:38,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:25:38,281 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:25:38,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 08:25:39,319 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 08:25:39,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:25:39,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-30 08:25:39,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:25:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:25:39,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:25:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:25:39,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720583139] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:25:39,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:25:39,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 50 [2023-08-30 08:25:39,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672845432] [2023-08-30 08:25:39,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:25:39,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-08-30 08:25:39,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:25:39,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-08-30 08:25:39,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=2041, Unknown=0, NotChecked=0, Total=2652 [2023-08-30 08:25:40,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:25:40,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 1646 transitions, 39905 flow. Second operand has 52 states, 52 states have (on average 137.46153846153845) internal successors, (7148), 52 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:40,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:25:40,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:25:40,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:31,926 INFO L130 PetriNetUnfolder]: 55915/100262 cut-off events. [2023-08-30 08:26:31,926 INFO L131 PetriNetUnfolder]: For 1060206/1060206 co-relation queries the response was YES. [2023-08-30 08:26:34,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466443 conditions, 100262 events. 55915/100262 cut-off events. For 1060206/1060206 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 766781 event pairs, 9247 based on Foata normal form. 430/100692 useless extension candidates. Maximal degree in co-relation 464079. Up to 21918 conditions per place. [2023-08-30 08:26:34,618 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 1163 selfloop transitions, 2344 changer transitions 0/3508 dead transitions. [2023-08-30 08:26:34,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 3508 transitions, 79914 flow [2023-08-30 08:26:34,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-08-30 08:26:34,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-08-30 08:26:34,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 9172 transitions. [2023-08-30 08:26:34,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46834150326797386 [2023-08-30 08:26:34,628 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 9172 transitions. [2023-08-30 08:26:34,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 9172 transitions. [2023-08-30 08:26:34,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:34,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 9172 transitions. [2023-08-30 08:26:34,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 143.3125) internal successors, (9172), 64 states have internal predecessors, (9172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:34,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 306.0) internal successors, (19890), 65 states have internal predecessors, (19890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:34,659 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 306.0) internal successors, (19890), 65 states have internal predecessors, (19890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:34,660 INFO L175 Difference]: Start difference. First operand has 381 places, 1646 transitions, 39905 flow. Second operand 64 states and 9172 transitions. [2023-08-30 08:26:34,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 3508 transitions, 79914 flow [2023-08-30 08:26:45,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 3508 transitions, 77199 flow, removed 1269 selfloop flow, removed 11 redundant places. [2023-08-30 08:26:45,740 INFO L231 Difference]: Finished difference. Result has 460 places, 2817 transitions, 74685 flow [2023-08-30 08:26:45,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=37897, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=74685, PETRI_PLACES=460, PETRI_TRANSITIONS=2817} [2023-08-30 08:26:45,742 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 418 predicate places. [2023-08-30 08:26:45,742 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 2817 transitions, 74685 flow [2023-08-30 08:26:45,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 137.46153846153845) internal successors, (7148), 52 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:45,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:45,743 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:45,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 08:26:45,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-30 08:26:45,944 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:26:45,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:45,944 INFO L85 PathProgramCache]: Analyzing trace with hash 979517914, now seen corresponding path program 5 times [2023-08-30 08:26:45,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:45,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259940234] [2023-08-30 08:26:45,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:45,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:46,972 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:26:46,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:46,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259940234] [2023-08-30 08:26:46,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259940234] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:26:46,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315085894] [2023-08-30 08:26:46,973 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 08:26:46,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:46,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:26:46,974 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:26:46,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 08:26:47,862 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-08-30 08:26:47,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:26:47,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-30 08:26:47,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:26:48,021 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:26:48,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:26:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:26:48,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315085894] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:26:48,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:26:48,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 50 [2023-08-30 08:26:48,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007907800] [2023-08-30 08:26:48,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:26:48,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-08-30 08:26:48,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:48,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-08-30 08:26:48,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=2052, Unknown=0, NotChecked=0, Total=2652 [2023-08-30 08:26:48,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:26:48,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 2817 transitions, 74685 flow. Second operand has 52 states, 52 states have (on average 137.46153846153845) internal successors, (7148), 52 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:48,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:48,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:26:48,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:52,611 INFO L130 PetriNetUnfolder]: 83695/149958 cut-off events. [2023-08-30 08:28:52,612 INFO L131 PetriNetUnfolder]: For 1772680/1772680 co-relation queries the response was YES. [2023-08-30 08:28:57,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728256 conditions, 149958 events. 83695/149958 cut-off events. For 1772680/1772680 co-relation queries the response was YES. Maximal size of possible extension queue 1244. Compared 1229066 event pairs, 10707 based on Foata normal form. 428/150386 useless extension candidates. Maximal degree in co-relation 725732. Up to 32876 conditions per place. [2023-08-30 08:28:57,709 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 1370 selfloop transitions, 3645 changer transitions 0/5016 dead transitions. [2023-08-30 08:28:57,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 5016 transitions, 128780 flow [2023-08-30 08:28:57,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-08-30 08:28:57,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-08-30 08:28:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 9981 transitions. [2023-08-30 08:28:57,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46596638655462186 [2023-08-30 08:28:57,719 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 9981 transitions. [2023-08-30 08:28:57,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 9981 transitions. [2023-08-30 08:28:57,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:57,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 9981 transitions. [2023-08-30 08:28:57,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 142.5857142857143) internal successors, (9981), 70 states have internal predecessors, (9981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:57,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 306.0) internal successors, (21726), 71 states have internal predecessors, (21726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:57,750 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 306.0) internal successors, (21726), 71 states have internal predecessors, (21726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:57,750 INFO L175 Difference]: Start difference. First operand has 460 places, 2817 transitions, 74685 flow. Second operand 70 states and 9981 transitions. [2023-08-30 08:28:57,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 5016 transitions, 128780 flow [2023-08-30 08:29:29,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 5016 transitions, 123649 flow, removed 2059 selfloop flow, removed 9 redundant places. [2023-08-30 08:29:29,898 INFO L231 Difference]: Finished difference. Result has 552 places, 4363 transitions, 123808 flow [2023-08-30 08:29:29,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=71046, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2795, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=123808, PETRI_PLACES=552, PETRI_TRANSITIONS=4363} [2023-08-30 08:29:29,901 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 510 predicate places. [2023-08-30 08:29:29,902 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 4363 transitions, 123808 flow [2023-08-30 08:29:29,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 137.46153846153845) internal successors, (7148), 52 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:29,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:29,903 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:29,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 08:29:30,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:29:30,112 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:29:30,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:30,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2019786691, now seen corresponding path program 6 times [2023-08-30 08:29:30,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:30,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814660130] [2023-08-30 08:29:30,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:30,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:31,329 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 1 proven. 690 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-30 08:29:31,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:31,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814660130] [2023-08-30 08:29:31,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814660130] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:29:31,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640740731] [2023-08-30 08:29:31,330 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 08:29:31,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:29:31,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:29:31,331 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:29:31,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 08:29:33,766 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2023-08-30 08:29:33,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:29:33,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-30 08:29:33,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:29:33,952 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 690 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:29:33,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:29:34,480 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 690 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:29:34,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640740731] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:29:34,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:29:34,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 24] total 53 [2023-08-30 08:29:34,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089171302] [2023-08-30 08:29:34,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:29:34,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-08-30 08:29:34,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:34,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-08-30 08:29:34,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=640, Invalid=2330, Unknown=0, NotChecked=0, Total=2970 [2023-08-30 08:29:34,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:29:34,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 4363 transitions, 123808 flow. Second operand has 55 states, 55 states have (on average 137.6) internal successors, (7568), 55 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:34,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:34,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:29:34,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:34:53,382 INFO L130 PetriNetUnfolder]: 119584/214365 cut-off events. [2023-08-30 08:34:53,383 INFO L131 PetriNetUnfolder]: For 2851648/2851648 co-relation queries the response was YES. [2023-08-30 08:35:00,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1075275 conditions, 214365 events. 119584/214365 cut-off events. For 2851648/2851648 co-relation queries the response was YES. Maximal size of possible extension queue 1673. Compared 1841799 event pairs, 13193 based on Foata normal form. 760/215125 useless extension candidates. Maximal degree in co-relation 1072662. Up to 47135 conditions per place. [2023-08-30 08:35:01,569 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 895 selfloop transitions, 6187 changer transitions 0/7083 dead transitions. [2023-08-30 08:35:01,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 7083 transitions, 198031 flow [2023-08-30 08:35:01,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-08-30 08:35:01,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-08-30 08:35:01,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 9990 transitions. [2023-08-30 08:35:01,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46638655462184875 [2023-08-30 08:35:01,578 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 9990 transitions. [2023-08-30 08:35:01,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 9990 transitions. [2023-08-30 08:35:01,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:35:01,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 9990 transitions. [2023-08-30 08:35:01,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 142.71428571428572) internal successors, (9990), 70 states have internal predecessors, (9990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:35:01,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 306.0) internal successors, (21726), 71 states have internal predecessors, (21726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:35:01,611 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 306.0) internal successors, (21726), 71 states have internal predecessors, (21726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:35:01,611 INFO L175 Difference]: Start difference. First operand has 552 places, 4363 transitions, 123808 flow. Second operand 70 states and 9990 transitions. [2023-08-30 08:35:01,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 7083 transitions, 198031 flow [2023-08-30 08:36:28,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 7083 transitions, 190177 flow, removed 3304 selfloop flow, removed 20 redundant places. [2023-08-30 08:36:28,525 INFO L231 Difference]: Finished difference. Result has 620 places, 6428 transitions, 191619 flow [2023-08-30 08:36:28,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=117297, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=191619, PETRI_PLACES=620, PETRI_TRANSITIONS=6428} [2023-08-30 08:36:28,529 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 578 predicate places. [2023-08-30 08:36:28,529 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 6428 transitions, 191619 flow [2023-08-30 08:36:28,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 137.6) internal successors, (7568), 55 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:36:28,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:36:28,530 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:36:28,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 08:36:28,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 08:36:28,731 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:36:28,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:36:28,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1060970528, now seen corresponding path program 7 times [2023-08-30 08:36:28,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:36:28,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186049905] [2023-08-30 08:36:28,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:36:28,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:36:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:36:30,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:36:30,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:36:30,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186049905] [2023-08-30 08:36:30,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186049905] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:36:30,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262126190] [2023-08-30 08:36:30,072 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 08:36:30,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:36:30,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:36:30,077 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:36:30,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 08:36:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:36:30,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-30 08:36:30,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:36:30,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:36:30,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:36:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:36:31,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262126190] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:36:31,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:36:31,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 30, 30] total 65 [2023-08-30 08:36:31,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009007831] [2023-08-30 08:36:31,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:36:31,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-08-30 08:36:31,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:36:31,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-08-30 08:36:31,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=978, Invalid=3444, Unknown=0, NotChecked=0, Total=4422 [2023-08-30 08:36:31,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-30 08:36:31,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 6428 transitions, 191619 flow. Second operand has 67 states, 67 states have (on average 137.47761194029852) internal successors, (9211), 67 states have internal predecessors, (9211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:36:31,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:36:31,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-30 08:36:31,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15