./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/weaver/mult-dist.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c22a326532494b0b5126a81d8882f3e958ed0a5a46e6da0f77df1a4da18ba846 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 01:42:40,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 01:42:40,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 01:42:40,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 01:42:40,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 01:42:40,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 01:42:40,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 01:42:40,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 01:42:40,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 01:42:40,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 01:42:40,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 01:42:40,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 01:42:40,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 01:42:40,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 01:42:40,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 01:42:40,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 01:42:40,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 01:42:40,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 01:42:40,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 01:42:40,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 01:42:40,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 01:42:40,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 01:42:40,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 01:42:40,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 01:42:40,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 01:42:40,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 01:42:40,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 01:42:40,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 01:42:40,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 01:42:40,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 01:42:40,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 01:42:40,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 01:42:40,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 01:42:40,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 01:42:40,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 01:42:40,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 01:42:40,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 01:42:40,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 01:42:40,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 01:42:40,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 01:42:40,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 01:42:40,350 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 01:42:40,392 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 01:42:40,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 01:42:40,394 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 01:42:40,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 01:42:40,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 01:42:40,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 01:42:40,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 01:42:40,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 01:42:40,396 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 01:42:40,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 01:42:40,397 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 01:42:40,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 01:42:40,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 01:42:40,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 01:42:40,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 01:42:40,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 01:42:40,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 01:42:40,398 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 01:42:40,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 01:42:40,398 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 01:42:40,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 01:42:40,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 01:42:40,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 01:42:40,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 01:42:40,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:42:40,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 01:42:40,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 01:42:40,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 01:42:40,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 01:42:40,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 01:42:40,401 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 01:42:40,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 01:42:40,401 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 01:42:40,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 01:42:40,401 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 01:42:40,402 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c22a326532494b0b5126a81d8882f3e958ed0a5a46e6da0f77df1a4da18ba846 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 01:42:40,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 01:42:40,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 01:42:40,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 01:42:40,744 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 01:42:40,745 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 01:42:40,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c [2023-08-31 01:42:42,010 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 01:42:42,226 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 01:42:42,226 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c [2023-08-31 01:42:42,232 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/283f8bd14/6088429e6c034ba0864fb2550c718928/FLAGb6bc9a651 [2023-08-31 01:42:42,252 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/283f8bd14/6088429e6c034ba0864fb2550c718928 [2023-08-31 01:42:42,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 01:42:42,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 01:42:42,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 01:42:42,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 01:42:42,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 01:42:42,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:42:42" (1/1) ... [2023-08-31 01:42:42,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@545443af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:42:42, skipping insertion in model container [2023-08-31 01:42:42,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:42:42" (1/1) ... [2023-08-31 01:42:42,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 01:42:42,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 01:42:42,414 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c[2116,2129] [2023-08-31 01:42:42,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:42:42,426 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 01:42:42,443 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c[2116,2129] [2023-08-31 01:42:42,444 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:42:42,457 INFO L208 MainTranslator]: Completed translation [2023-08-31 01:42:42,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:42:42 WrapperNode [2023-08-31 01:42:42,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 01:42:42,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 01:42:42,459 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 01:42:42,459 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 01:42:42,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:42:42" (1/1) ... [2023-08-31 01:42:42,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:42:42" (1/1) ... [2023-08-31 01:42:42,507 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2023-08-31 01:42:42,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 01:42:42,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 01:42:42,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 01:42:42,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 01:42:42,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:42:42" (1/1) ... [2023-08-31 01:42:42,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:42:42" (1/1) ... [2023-08-31 01:42:42,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:42:42" (1/1) ... [2023-08-31 01:42:42,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:42:42" (1/1) ... [2023-08-31 01:42:42,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:42:42" (1/1) ... [2023-08-31 01:42:42,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:42:42" (1/1) ... [2023-08-31 01:42:42,546 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:42:42" (1/1) ... [2023-08-31 01:42:42,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:42:42" (1/1) ... [2023-08-31 01:42:42,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 01:42:42,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 01:42:42,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 01:42:42,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 01:42:42,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:42:42" (1/1) ... [2023-08-31 01:42:42,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:42:42,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:42:42,621 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) [2023-08-31 01:42:42,656 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 [2023-08-31 01:42:42,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 01:42:42,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 01:42:42,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 01:42:42,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 01:42:42,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 01:42:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 01:42:42,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 01:42:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 01:42:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 01:42:42,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 01:42:42,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 01:42:42,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 01:42:42,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 01:42:42,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 01:42:42,672 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 01:42:42,778 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 01:42:42,780 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 01:42:43,035 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 01:42:43,042 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 01:42:43,042 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-31 01:42:43,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:42:43 BoogieIcfgContainer [2023-08-31 01:42:43,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 01:42:43,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 01:42:43,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 01:42:43,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 01:42:43,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 01:42:42" (1/3) ... [2023-08-31 01:42:43,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ad1af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:42:43, skipping insertion in model container [2023-08-31 01:42:43,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:42:42" (2/3) ... [2023-08-31 01:42:43,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ad1af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:42:43, skipping insertion in model container [2023-08-31 01:42:43,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:42:43" (3/3) ... [2023-08-31 01:42:43,051 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2023-08-31 01:42:43,058 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 01:42:43,066 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 01:42:43,066 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 01:42:43,066 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 01:42:43,133 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 01:42:43,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 105 transitions, 234 flow [2023-08-31 01:42:43,219 INFO L130 PetriNetUnfolder]: 7/102 cut-off events. [2023-08-31 01:42:43,219 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:42:43,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 7/102 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2023-08-31 01:42:43,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 105 transitions, 234 flow [2023-08-31 01:42:43,228 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 92 transitions, 202 flow [2023-08-31 01:42:43,231 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 01:42:43,240 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 92 transitions, 202 flow [2023-08-31 01:42:43,242 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 92 transitions, 202 flow [2023-08-31 01:42:43,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 92 transitions, 202 flow [2023-08-31 01:42:43,269 INFO L130 PetriNetUnfolder]: 7/92 cut-off events. [2023-08-31 01:42:43,269 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:42:43,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 92 events. 7/92 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2023-08-31 01:42:43,272 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2023-08-31 01:42:45,888 INFO L134 LiptonReduction]: Checked pairs total: 1314 [2023-08-31 01:42:45,888 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-08-31 01:42:45,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 01:42:45,905 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;@15a901d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 01:42:45,905 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 01:42:45,911 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-08-31 01:42:45,911 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:42:45,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:42:45,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:42:45,913 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:42:45,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:42:45,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1681500982, now seen corresponding path program 1 times [2023-08-31 01:42:45,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:42:45,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021723875] [2023-08-31 01:42:45,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:42:45,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:42:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:42:46,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:42:46,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:42:46,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021723875] [2023-08-31 01:42:46,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021723875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:42:46,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:42:46,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 01:42:46,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154462341] [2023-08-31 01:42:46,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:42:46,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:42:46,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:42:46,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:42:46,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:42:46,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 183 [2023-08-31 01:42:46,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:42:46,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:42:46,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 183 [2023-08-31 01:42:46,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:42:46,748 INFO L130 PetriNetUnfolder]: 359/506 cut-off events. [2023-08-31 01:42:46,748 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-08-31 01:42:46,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 506 events. 359/506 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1611 event pairs, 39 based on Foata normal form. 1/308 useless extension candidates. Maximal degree in co-relation 803. Up to 421 conditions per place. [2023-08-31 01:42:46,756 INFO L137 encePairwiseOnDemand]: 178/183 looper letters, 30 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2023-08-31 01:42:46,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 179 flow [2023-08-31 01:42:46,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:42:46,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:42:46,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-08-31 01:42:46,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5628415300546448 [2023-08-31 01:42:46,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-08-31 01:42:46,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-08-31 01:42:46,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:42:46,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-08-31 01:42:46,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:42:46,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 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) [2023-08-31 01:42:46,793 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 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) [2023-08-31 01:42:46,795 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 3 states and 309 transitions. [2023-08-31 01:42:46,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 179 flow [2023-08-31 01:42:46,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 38 transitions, 157 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 01:42:46,800 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 76 flow [2023-08-31 01:42:46,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2023-08-31 01:42:46,804 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2023-08-31 01:42:46,805 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 76 flow [2023-08-31 01:42:46,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:42:46,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:42:46,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:42:46,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 01:42:46,807 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:42:46,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:42:46,811 INFO L85 PathProgramCache]: Analyzing trace with hash -296399337, now seen corresponding path program 1 times [2023-08-31 01:42:46,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:42:46,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289885957] [2023-08-31 01:42:46,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:42:46,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:42:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:42:47,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:42:47,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:42:47,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289885957] [2023-08-31 01:42:47,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289885957] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:42:47,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:42:47,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:42:47,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097430018] [2023-08-31 01:42:47,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:42:47,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:42:47,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:42:47,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:42:47,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:42:47,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 183 [2023-08-31 01:42:47,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:42:47,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:42:47,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 183 [2023-08-31 01:42:47,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:42:47,471 INFO L130 PetriNetUnfolder]: 596/906 cut-off events. [2023-08-31 01:42:47,472 INFO L131 PetriNetUnfolder]: For 179/179 co-relation queries the response was YES. [2023-08-31 01:42:47,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2187 conditions, 906 events. 596/906 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3355 event pairs, 166 based on Foata normal form. 6/912 useless extension candidates. Maximal degree in co-relation 616. Up to 420 conditions per place. [2023-08-31 01:42:47,477 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 69 selfloop transitions, 8 changer transitions 8/85 dead transitions. [2023-08-31 01:42:47,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 85 transitions, 416 flow [2023-08-31 01:42:47,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:42:47,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:42:47,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 638 transitions. [2023-08-31 01:42:47,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49804839968774395 [2023-08-31 01:42:47,480 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 638 transitions. [2023-08-31 01:42:47,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 638 transitions. [2023-08-31 01:42:47,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:42:47,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 638 transitions. [2023-08-31 01:42:47,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:42:47,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:42:47,487 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:42:47,487 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 76 flow. Second operand 7 states and 638 transitions. [2023-08-31 01:42:47,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 85 transitions, 416 flow [2023-08-31 01:42:47,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 85 transitions, 406 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 01:42:47,490 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 139 flow [2023-08-31 01:42:47,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=139, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-31 01:42:47,491 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2023-08-31 01:42:47,491 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 139 flow [2023-08-31 01:42:47,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:42:47,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:42:47,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:42:47,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 01:42:47,493 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:42:47,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:42:47,493 INFO L85 PathProgramCache]: Analyzing trace with hash -748397025, now seen corresponding path program 2 times [2023-08-31 01:42:47,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:42:47,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554877780] [2023-08-31 01:42:47,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:42:47,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:42:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:42:47,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:42:47,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:42:47,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554877780] [2023-08-31 01:42:47,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554877780] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:42:47,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899285366] [2023-08-31 01:42:47,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:42:47,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:42:47,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:42:47,745 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) [2023-08-31 01:42:47,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 01:42:47,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 01:42:47,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:42:47,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-31 01:42:47,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:42:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:42:48,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:42:48,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:42:48,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899285366] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:42:48,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:42:48,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 14 [2023-08-31 01:42:48,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031983205] [2023-08-31 01:42:48,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:42:48,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:42:48,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:42:48,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:42:48,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-08-31 01:42:48,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 183 [2023-08-31 01:42:48,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 139 flow. Second operand has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:42:48,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:42:48,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 183 [2023-08-31 01:42:48,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:42:48,656 INFO L130 PetriNetUnfolder]: 832/1268 cut-off events. [2023-08-31 01:42:48,657 INFO L131 PetriNetUnfolder]: For 1476/1531 co-relation queries the response was YES. [2023-08-31 01:42:48,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4023 conditions, 1268 events. 832/1268 cut-off events. For 1476/1531 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5353 event pairs, 172 based on Foata normal form. 6/1272 useless extension candidates. Maximal degree in co-relation 1710. Up to 409 conditions per place. [2023-08-31 01:42:48,674 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 99 selfloop transitions, 17 changer transitions 1/118 dead transitions. [2023-08-31 01:42:48,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 118 transitions, 705 flow [2023-08-31 01:42:48,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:42:48,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:42:48,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 761 transitions. [2023-08-31 01:42:48,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519808743169399 [2023-08-31 01:42:48,678 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 761 transitions. [2023-08-31 01:42:48,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 761 transitions. [2023-08-31 01:42:48,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:42:48,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 761 transitions. [2023-08-31 01:42:48,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.125) internal successors, (761), 8 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:42:48,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:42:48,684 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:42:48,684 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 139 flow. Second operand 8 states and 761 transitions. [2023-08-31 01:42:48,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 118 transitions, 705 flow [2023-08-31 01:42:48,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 118 transitions, 675 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-31 01:42:48,693 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 294 flow [2023-08-31 01:42:48,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=294, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2023-08-31 01:42:48,694 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2023-08-31 01:42:48,695 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 294 flow [2023-08-31 01:42:48,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:42:48,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:42:48,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:42:48,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 01:42:48,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:42:48,902 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:42:48,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:42:48,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1550280123, now seen corresponding path program 3 times [2023-08-31 01:42:48,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:42:48,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069347080] [2023-08-31 01:42:48,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:42:48,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:42:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:42:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:42:49,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:42:49,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069347080] [2023-08-31 01:42:49,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069347080] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:42:49,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:42:49,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:42:49,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086911517] [2023-08-31 01:42:49,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:42:49,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:42:49,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:42:49,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:42:49,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:42:49,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 183 [2023-08-31 01:42:49,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 294 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:42:49,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:42:49,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 183 [2023-08-31 01:42:49,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:42:49,562 INFO L130 PetriNetUnfolder]: 1203/1834 cut-off events. [2023-08-31 01:42:49,563 INFO L131 PetriNetUnfolder]: For 5174/5174 co-relation queries the response was YES. [2023-08-31 01:42:49,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7019 conditions, 1834 events. 1203/1834 cut-off events. For 5174/5174 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 8187 event pairs, 336 based on Foata normal form. 12/1846 useless extension candidates. Maximal degree in co-relation 5374. Up to 928 conditions per place. [2023-08-31 01:42:49,576 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 108 selfloop transitions, 29 changer transitions 18/155 dead transitions. [2023-08-31 01:42:49,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 155 transitions, 1178 flow [2023-08-31 01:42:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:42:49,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:42:49,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 900 transitions. [2023-08-31 01:42:49,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918032786885246 [2023-08-31 01:42:49,579 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 900 transitions. [2023-08-31 01:42:49,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 900 transitions. [2023-08-31 01:42:49,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:42:49,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 900 transitions. [2023-08-31 01:42:49,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:42:49,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:42:49,586 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:42:49,586 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 294 flow. Second operand 10 states and 900 transitions. [2023-08-31 01:42:49,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 155 transitions, 1178 flow [2023-08-31 01:42:49,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 155 transitions, 1174 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-31 01:42:49,601 INFO L231 Difference]: Finished difference. Result has 62 places, 73 transitions, 620 flow [2023-08-31 01:42:49,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=620, PETRI_PLACES=62, PETRI_TRANSITIONS=73} [2023-08-31 01:42:49,602 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2023-08-31 01:42:49,602 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 73 transitions, 620 flow [2023-08-31 01:42:49,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:42:49,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:42:49,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:42:49,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 01:42:49,604 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:42:49,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:42:49,604 INFO L85 PathProgramCache]: Analyzing trace with hash 382118611, now seen corresponding path program 4 times [2023-08-31 01:42:49,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:42:49,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419882201] [2023-08-31 01:42:49,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:42:49,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:42:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:42:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:42:49,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:42:49,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419882201] [2023-08-31 01:42:49,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419882201] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:42:49,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004625565] [2023-08-31 01:42:49,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 01:42:49,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:42:49,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:42:49,756 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) [2023-08-31 01:42:49,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 01:42:49,854 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 01:42:49,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:42:49,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-31 01:42:49,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:42:49,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:42:49,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:43:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:43:02,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004625565] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:43:02,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:43:02,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2023-08-31 01:43:02,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833143963] [2023-08-31 01:43:02,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:43:02,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-31 01:43:02,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:43:02,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-31 01:43:02,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=167, Unknown=5, NotChecked=0, Total=240 [2023-08-31 01:43:04,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:43:06,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:43:09,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:43:09,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 183 [2023-08-31 01:43:09,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 73 transitions, 620 flow. Second operand has 16 states, 16 states have (on average 78.125) internal successors, (1250), 16 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:43:09,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:43:09,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 183 [2023-08-31 01:43:09,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:43:15,539 WARN L222 SmtUtils]: Spent 6.08s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 01:43:17,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:43:19,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:43:21,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:43:23,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:43:25,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:43:27,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:43:30,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:43:32,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:43:34,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:43:36,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:43:38,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:43:40,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:43:42,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:43:44,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:14,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:16,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:18,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:21,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:23,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:25,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:27,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:29,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:31,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:33,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:35,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:37,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:39,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:41,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:43,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:45,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:47,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:49,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:51,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:53,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:56,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:44:58,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:00,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:02,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:04,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:06,182 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (mod c_thread3Thread1of1ForFork0_~i~2 4294967296)) (.cse3 (mod c_thread2Thread1of1ForFork2_~i~1 4294967296))) (and (forall ((aux_div_aux_mod_~a~0_21_32 Int) (aux_mod_aux_mod_~a~0_21_32 Int)) (let ((.cse0 (+ aux_mod_aux_mod_~a~0_21_32 (* aux_div_aux_mod_~a~0_21_32 4294967296)))) (or (<= aux_mod_aux_mod_~a~0_21_32 0) (< 1 .cse0) (let ((.cse1 (* aux_mod_aux_mod_~a~0_21_32 4294967295))) (< (+ (* (div (+ .cse1 .cse2) 4294967296) 4294967296) .cse3) .cse1)) (< .cse0 0) (>= aux_mod_aux_mod_~a~0_21_32 4294967296)))) (let ((.cse4 (* 4294967295 c_~a~0))) (< (+ (* (div (+ .cse4 .cse2) 4294967296) 4294967296) .cse3) .cse4)) (forall ((aux_div_aux_mod_~a~0_21_32 Int) (aux_mod_aux_mod_~a~0_21_32 Int)) (let ((.cse5 (+ aux_mod_aux_mod_~a~0_21_32 (* aux_div_aux_mod_~a~0_21_32 4294967296)))) (or (<= aux_mod_aux_mod_~a~0_21_32 (mod c_thread1Thread1of1ForFork1_~i~0 4294967296)) (< (mod (+ c_thread1Thread1of1ForFork1_~i~0 1) 4294967296) .cse5) (let ((.cse6 (* aux_mod_aux_mod_~a~0_21_32 4294967295))) (< (+ (* (div (+ .cse6 .cse2) 4294967296) 4294967296) .cse3) .cse6)) (< .cse5 0) (>= aux_mod_aux_mod_~a~0_21_32 4294967296)))))) is different from false [2023-08-31 01:45:08,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:10,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:12,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:14,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:16,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:18,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:20,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:22,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:26,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:28,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:30,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:32,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:34,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:37,193 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_thread3Thread1of1ForFork0_~i~2 4294967296)) (.cse2 (mod c_thread2Thread1of1ForFork2_~i~1 4294967296))) (and (= c_thread2Thread1of1ForFork2_~i~1 0) (let ((.cse0 (* 4294967295 c_~a~0))) (< (+ (* (div (+ .cse0 .cse1) 4294967296) 4294967296) .cse2) .cse0)) (forall ((aux_div_aux_mod_~a~0_21_32 Int) (aux_mod_aux_mod_~a~0_21_32 Int)) (let ((.cse3 (+ aux_mod_aux_mod_~a~0_21_32 (* aux_div_aux_mod_~a~0_21_32 4294967296)))) (or (<= aux_mod_aux_mod_~a~0_21_32 (mod c_thread1Thread1of1ForFork1_~i~0 4294967296)) (< (mod (+ c_thread1Thread1of1ForFork1_~i~0 1) 4294967296) .cse3) (let ((.cse4 (* aux_mod_aux_mod_~a~0_21_32 4294967295))) (< (+ (* (div (+ .cse4 .cse1) 4294967296) 4294967296) .cse2) .cse4)) (< .cse3 0) (>= aux_mod_aux_mod_~a~0_21_32 4294967296)))))) is different from false [2023-08-31 01:45:39,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:41,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:43,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:45,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:47,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:49,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:52,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:54,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:56,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:45:58,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:46:00,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:46:02,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:46:04,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:46:06,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:46:08,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:46:08,784 INFO L130 PetriNetUnfolder]: 2478/3828 cut-off events. [2023-08-31 01:46:08,784 INFO L131 PetriNetUnfolder]: For 17722/17722 co-relation queries the response was YES. [2023-08-31 01:46:08,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17149 conditions, 3828 events. 2478/3828 cut-off events. For 17722/17722 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 19964 event pairs, 365 based on Foata normal form. 48/3876 useless extension candidates. Maximal degree in co-relation 15218. Up to 1331 conditions per place. [2023-08-31 01:46:08,817 INFO L137 encePairwiseOnDemand]: 171/183 looper letters, 211 selfloop transitions, 118 changer transitions 3/332 dead transitions. [2023-08-31 01:46:08,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 332 transitions, 2811 flow [2023-08-31 01:46:08,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-31 01:46:08,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-31 01:46:08,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2074 transitions. [2023-08-31 01:46:08,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-08-31 01:46:08,824 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2074 transitions. [2023-08-31 01:46:08,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2074 transitions. [2023-08-31 01:46:08,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:46:08,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2074 transitions. [2023-08-31 01:46:08,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.41666666666667) internal successors, (2074), 24 states have internal predecessors, (2074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:46:08,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 183.0) internal successors, (4575), 25 states have internal predecessors, (4575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:46:08,836 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 183.0) internal successors, (4575), 25 states have internal predecessors, (4575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:46:08,836 INFO L175 Difference]: Start difference. First operand has 62 places, 73 transitions, 620 flow. Second operand 24 states and 2074 transitions. [2023-08-31 01:46:08,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 332 transitions, 2811 flow [2023-08-31 01:46:08,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 332 transitions, 2753 flow, removed 29 selfloop flow, removed 1 redundant places. [2023-08-31 01:46:08,911 INFO L231 Difference]: Finished difference. Result has 104 places, 166 transitions, 1908 flow [2023-08-31 01:46:08,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1908, PETRI_PLACES=104, PETRI_TRANSITIONS=166} [2023-08-31 01:46:08,915 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 75 predicate places. [2023-08-31 01:46:08,915 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 166 transitions, 1908 flow [2023-08-31 01:46:08,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 78.125) internal successors, (1250), 16 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:46:08,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:46:08,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:46:08,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 01:46:09,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:46:09,123 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:46:09,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:46:09,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2033487921, now seen corresponding path program 1 times [2023-08-31 01:46:09,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:46:09,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19281600] [2023-08-31 01:46:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:46:09,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:46:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:46:09,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:46:09,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:46:09,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19281600] [2023-08-31 01:46:09,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19281600] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:46:09,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62348642] [2023-08-31 01:46:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:46:09,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:46:09,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:46:09,358 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) [2023-08-31 01:46:09,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 01:46:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:46:09,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-31 01:46:09,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:46:09,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:46:09,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:46:09,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:46:09,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62348642] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:46:09,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:46:09,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2023-08-31 01:46:09,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570252433] [2023-08-31 01:46:09,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:46:09,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:46:09,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:46:09,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:46:09,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:46:09,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 183 [2023-08-31 01:46:09,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 166 transitions, 1908 flow. Second operand has 10 states, 10 states have (on average 81.8) internal successors, (818), 10 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:46:09,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:46:09,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 183 [2023-08-31 01:46:09,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:46:10,739 INFO L130 PetriNetUnfolder]: 2736/4285 cut-off events. [2023-08-31 01:46:10,739 INFO L131 PetriNetUnfolder]: For 64280/64280 co-relation queries the response was YES. [2023-08-31 01:46:10,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28758 conditions, 4285 events. 2736/4285 cut-off events. For 64280/64280 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 23486 event pairs, 524 based on Foata normal form. 38/4323 useless extension candidates. Maximal degree in co-relation 26723. Up to 1502 conditions per place. [2023-08-31 01:46:10,823 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 219 selfloop transitions, 79 changer transitions 4/302 dead transitions. [2023-08-31 01:46:10,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 302 transitions, 3893 flow [2023-08-31 01:46:10,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:46:10,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:46:10,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 913 transitions. [2023-08-31 01:46:10,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4989071038251366 [2023-08-31 01:46:10,828 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 913 transitions. [2023-08-31 01:46:10,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 913 transitions. [2023-08-31 01:46:10,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:46:10,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 913 transitions. [2023-08-31 01:46:10,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.3) internal successors, (913), 10 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:46:10,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:46:10,834 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:46:10,835 INFO L175 Difference]: Start difference. First operand has 104 places, 166 transitions, 1908 flow. Second operand 10 states and 913 transitions. [2023-08-31 01:46:10,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 302 transitions, 3893 flow [2023-08-31 01:46:11,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 302 transitions, 3615 flow, removed 139 selfloop flow, removed 0 redundant places. [2023-08-31 01:46:11,103 INFO L231 Difference]: Finished difference. Result has 118 places, 197 transitions, 2376 flow [2023-08-31 01:46:11,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1678, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2376, PETRI_PLACES=118, PETRI_TRANSITIONS=197} [2023-08-31 01:46:11,106 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2023-08-31 01:46:11,106 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 197 transitions, 2376 flow [2023-08-31 01:46:11,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 81.8) internal successors, (818), 10 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:46:11,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:46:11,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:46:11,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 01:46:11,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:46:11,313 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:46:11,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:46:11,313 INFO L85 PathProgramCache]: Analyzing trace with hash 463623687, now seen corresponding path program 5 times [2023-08-31 01:46:11,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:46:11,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821398880] [2023-08-31 01:46:11,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:46:11,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:46:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:46:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:46:11,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:46:11,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821398880] [2023-08-31 01:46:11,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821398880] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:46:11,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244282505] [2023-08-31 01:46:11,502 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 01:46:11,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:46:11,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:46:11,503 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) [2023-08-31 01:46:11,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 01:46:11,600 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 01:46:11,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:46:11,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-31 01:46:11,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:46:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:46:11,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:46:32,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:46:32,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244282505] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:46:32,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:46:32,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2023-08-31 01:46:32,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145021893] [2023-08-31 01:46:32,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:46:32,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-31 01:46:32,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:46:32,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-31 01:46:32,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=178, Unknown=10, NotChecked=0, Total=272 [2023-08-31 01:46:34,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:46:36,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:46:36,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 183 [2023-08-31 01:46:36,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 197 transitions, 2376 flow. Second operand has 17 states, 17 states have (on average 78.88235294117646) internal successors, (1341), 17 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:46:36,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:46:36,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 183 [2023-08-31 01:46:36,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:47:01,570 WARN L222 SmtUtils]: Spent 16.23s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 01:47:03,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:05,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:07,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:09,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:11,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:13,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:16,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:18,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:20,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:22,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:24,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:26,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:28,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:30,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:32,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:34,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:36,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:38,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:40,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:42,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:44,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:46,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:48,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:50,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:52,949 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (mod c_thread3Thread1of1ForFork0_~i~2 4294967296)) (.cse0 (mod c_thread1Thread1of1ForFork1_~i~0 4294967296))) (and (or (< .cse0 (mod c_~a~0 4294967296)) (let ((.cse1 (* 4294967295 c_~a~0))) (< (+ (* (div (+ .cse1 .cse2) 4294967296) 4294967296) (mod c_thread2Thread1of1ForFork2_~i~1 4294967296)) .cse1))) (forall ((aux_div_aux_mod_~a~0_21_32 Int) (aux_mod_aux_mod_~a~0_21_32 Int)) (let ((.cse4 (+ aux_mod_aux_mod_~a~0_21_32 (* aux_div_aux_mod_~a~0_21_32 4294967296)))) (or (let ((.cse3 (* aux_mod_aux_mod_~a~0_21_32 4294967295))) (< (* (div (+ .cse3 .cse2) 4294967296) 4294967296) .cse3)) (<= aux_mod_aux_mod_~a~0_21_32 .cse0) (< (mod (+ c_thread1Thread1of1ForFork1_~i~0 1) 4294967296) .cse4) (< .cse4 0) (>= aux_mod_aux_mod_~a~0_21_32 4294967296)))))) is different from false [2023-08-31 01:47:57,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:47:59,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:01,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:03,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:05,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:07,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:09,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:11,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:13,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:15,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:17,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:22,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:24,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:26,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:28,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:30,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:32,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:34,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:36,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:38,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:41,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:43,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:45,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:47,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:49,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:51,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:53,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:55,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:57,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:48:59,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:49:01,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:49:01,466 INFO L130 PetriNetUnfolder]: 4800/7434 cut-off events. [2023-08-31 01:49:01,466 INFO L131 PetriNetUnfolder]: For 136764/136764 co-relation queries the response was YES. [2023-08-31 01:49:01,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52902 conditions, 7434 events. 4800/7434 cut-off events. For 136764/136764 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 43283 event pairs, 784 based on Foata normal form. 48/7472 useless extension candidates. Maximal degree in co-relation 46720. Up to 2674 conditions per place. [2023-08-31 01:49:01,547 INFO L137 encePairwiseOnDemand]: 171/183 looper letters, 325 selfloop transitions, 183 changer transitions 2/510 dead transitions. [2023-08-31 01:49:01,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 510 transitions, 6555 flow [2023-08-31 01:49:01,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-31 01:49:01,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-31 01:49:01,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1937 transitions. [2023-08-31 01:49:01,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4811227024341778 [2023-08-31 01:49:01,552 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1937 transitions. [2023-08-31 01:49:01,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1937 transitions. [2023-08-31 01:49:01,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:01,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1937 transitions. [2023-08-31 01:49:01,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 88.04545454545455) internal successors, (1937), 22 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:01,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 183.0) internal successors, (4209), 23 states have internal predecessors, (4209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:01,564 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 183.0) internal successors, (4209), 23 states have internal predecessors, (4209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:01,564 INFO L175 Difference]: Start difference. First operand has 118 places, 197 transitions, 2376 flow. Second operand 22 states and 1937 transitions. [2023-08-31 01:49:01,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 510 transitions, 6555 flow [2023-08-31 01:49:01,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 510 transitions, 6465 flow, removed 28 selfloop flow, removed 1 redundant places. [2023-08-31 01:49:01,881 INFO L231 Difference]: Finished difference. Result has 156 places, 305 transitions, 4386 flow [2023-08-31 01:49:01,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2303, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4386, PETRI_PLACES=156, PETRI_TRANSITIONS=305} [2023-08-31 01:49:01,882 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 127 predicate places. [2023-08-31 01:49:01,882 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 305 transitions, 4386 flow [2023-08-31 01:49:01,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 78.88235294117646) internal successors, (1341), 17 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:01,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:01,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:01,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-31 01:49:02,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:49:02,089 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:02,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:02,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1300590985, now seen corresponding path program 2 times [2023-08-31 01:49:02,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:02,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808537763] [2023-08-31 01:49:02,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:02,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:02,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:02,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808537763] [2023-08-31 01:49:02,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808537763] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:02,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:02,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:49:02,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492726068] [2023-08-31 01:49:02,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:02,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:49:02,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:02,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:49:02,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:49:02,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 183 [2023-08-31 01:49:02,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 305 transitions, 4386 flow. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:02,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:02,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 183 [2023-08-31 01:49:02,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:03,989 INFO L130 PetriNetUnfolder]: 5168/8004 cut-off events. [2023-08-31 01:49:03,989 INFO L131 PetriNetUnfolder]: For 293726/293726 co-relation queries the response was YES. [2023-08-31 01:49:04,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73709 conditions, 8004 events. 5168/8004 cut-off events. For 293726/293726 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 47165 event pairs, 1114 based on Foata normal form. 16/8020 useless extension candidates. Maximal degree in co-relation 66627. Up to 3961 conditions per place. [2023-08-31 01:49:04,069 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 279 selfloop transitions, 119 changer transitions 0/398 dead transitions. [2023-08-31 01:49:04,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 398 transitions, 6448 flow [2023-08-31 01:49:04,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:49:04,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:49:04,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 640 transitions. [2023-08-31 01:49:04,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4996096799375488 [2023-08-31 01:49:04,072 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 640 transitions. [2023-08-31 01:49:04,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 640 transitions. [2023-08-31 01:49:04,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:04,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 640 transitions. [2023-08-31 01:49:04,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.42857142857143) internal successors, (640), 7 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:04,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:04,076 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:04,076 INFO L175 Difference]: Start difference. First operand has 156 places, 305 transitions, 4386 flow. Second operand 7 states and 640 transitions. [2023-08-31 01:49:04,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 398 transitions, 6448 flow [2023-08-31 01:49:04,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 398 transitions, 5976 flow, removed 236 selfloop flow, removed 0 redundant places. [2023-08-31 01:49:04,772 INFO L231 Difference]: Finished difference. Result has 166 places, 319 transitions, 4540 flow [2023-08-31 01:49:04,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=3938, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4540, PETRI_PLACES=166, PETRI_TRANSITIONS=319} [2023-08-31 01:49:04,773 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 137 predicate places. [2023-08-31 01:49:04,773 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 319 transitions, 4540 flow [2023-08-31 01:49:04,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:04,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:04,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:04,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 01:49:04,774 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:04,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:04,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1108466433, now seen corresponding path program 3 times [2023-08-31 01:49:04,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:04,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845425499] [2023-08-31 01:49:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:04,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:04,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:04,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845425499] [2023-08-31 01:49:04,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845425499] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:04,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:04,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:49:04,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513267829] [2023-08-31 01:49:04,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:04,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:49:04,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:04,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:49:04,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:49:04,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 183 [2023-08-31 01:49:04,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 319 transitions, 4540 flow. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:04,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:04,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 183 [2023-08-31 01:49:04,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:06,421 INFO L130 PetriNetUnfolder]: 5191/8115 cut-off events. [2023-08-31 01:49:06,421 INFO L131 PetriNetUnfolder]: For 310641/310641 co-relation queries the response was YES. [2023-08-31 01:49:06,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74487 conditions, 8115 events. 5191/8115 cut-off events. For 310641/310641 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 49341 event pairs, 1736 based on Foata normal form. 42/8151 useless extension candidates. Maximal degree in co-relation 68817. Up to 4418 conditions per place. [2023-08-31 01:49:06,501 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 299 selfloop transitions, 79 changer transitions 12/390 dead transitions. [2023-08-31 01:49:06,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 390 transitions, 6235 flow [2023-08-31 01:49:06,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:49:06,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:49:06,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 643 transitions. [2023-08-31 01:49:06,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.501951600312256 [2023-08-31 01:49:06,504 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 643 transitions. [2023-08-31 01:49:06,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 643 transitions. [2023-08-31 01:49:06,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:06,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 643 transitions. [2023-08-31 01:49:06,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.85714285714286) internal successors, (643), 7 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:06,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:06,508 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:06,508 INFO L175 Difference]: Start difference. First operand has 166 places, 319 transitions, 4540 flow. Second operand 7 states and 643 transitions. [2023-08-31 01:49:06,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 390 transitions, 6235 flow [2023-08-31 01:49:07,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 390 transitions, 6084 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-31 01:49:07,279 INFO L231 Difference]: Finished difference. Result has 175 places, 326 transitions, 4801 flow [2023-08-31 01:49:07,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=4404, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4801, PETRI_PLACES=175, PETRI_TRANSITIONS=326} [2023-08-31 01:49:07,280 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 146 predicate places. [2023-08-31 01:49:07,280 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 326 transitions, 4801 flow [2023-08-31 01:49:07,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:07,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:07,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:07,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 01:49:07,281 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:07,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:07,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1875857363, now seen corresponding path program 6 times [2023-08-31 01:49:07,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:07,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995834199] [2023-08-31 01:49:07,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:07,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:07,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:07,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:07,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995834199] [2023-08-31 01:49:07,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995834199] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:49:07,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448473155] [2023-08-31 01:49:07,526 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 01:49:07,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:49:07,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:49:07,529 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) [2023-08-31 01:49:07,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 01:49:07,626 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-31 01:49:07,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:49:07,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-31 01:49:07,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:49:07,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:07,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:49:07,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:07,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448473155] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:49:07,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:49:07,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2023-08-31 01:49:07,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735407163] [2023-08-31 01:49:07,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:07,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:49:07,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:07,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:49:07,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:49:07,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 183 [2023-08-31 01:49:07,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 326 transitions, 4801 flow. Second operand has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:07,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:07,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 183 [2023-08-31 01:49:07,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:09,315 INFO L130 PetriNetUnfolder]: 5059/7931 cut-off events. [2023-08-31 01:49:09,315 INFO L131 PetriNetUnfolder]: For 308721/308993 co-relation queries the response was YES. [2023-08-31 01:49:09,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74394 conditions, 7931 events. 5059/7931 cut-off events. For 308721/308993 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 48511 event pairs, 1488 based on Foata normal form. 93/7943 useless extension candidates. Maximal degree in co-relation 74233. Up to 4118 conditions per place. [2023-08-31 01:49:09,405 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 329 selfloop transitions, 54 changer transitions 1/393 dead transitions. [2023-08-31 01:49:09,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 393 transitions, 6359 flow [2023-08-31 01:49:09,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:49:09,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:49:09,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 566 transitions. [2023-08-31 01:49:09,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154826958105647 [2023-08-31 01:49:09,408 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 566 transitions. [2023-08-31 01:49:09,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 566 transitions. [2023-08-31 01:49:09,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:09,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 566 transitions. [2023-08-31 01:49:09,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.33333333333333) internal successors, (566), 6 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:09,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:09,412 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:09,412 INFO L175 Difference]: Start difference. First operand has 175 places, 326 transitions, 4801 flow. Second operand 6 states and 566 transitions. [2023-08-31 01:49:09,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 393 transitions, 6359 flow [2023-08-31 01:49:10,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 393 transitions, 6241 flow, removed 24 selfloop flow, removed 2 redundant places. [2023-08-31 01:49:10,132 INFO L231 Difference]: Finished difference. Result has 180 places, 332 transitions, 4977 flow [2023-08-31 01:49:10,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=4693, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4977, PETRI_PLACES=180, PETRI_TRANSITIONS=332} [2023-08-31 01:49:10,132 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 151 predicate places. [2023-08-31 01:49:10,133 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 332 transitions, 4977 flow [2023-08-31 01:49:10,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:10,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:10,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:10,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-31 01:49:10,333 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,SelfDestructingSolverStorable9 [2023-08-31 01:49:10,334 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:10,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:10,335 INFO L85 PathProgramCache]: Analyzing trace with hash -241233413, now seen corresponding path program 7 times [2023-08-31 01:49:10,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:10,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754578093] [2023-08-31 01:49:10,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:10,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:10,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:10,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754578093] [2023-08-31 01:49:10,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754578093] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:49:10,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650970075] [2023-08-31 01:49:10,560 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-31 01:49:10,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:49:10,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:49:10,561 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) [2023-08-31 01:49:10,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-31 01:49:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:10,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-31 01:49:10,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:49:10,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:10,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:49:10,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:10,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650970075] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:49:10,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:49:10,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2023-08-31 01:49:10,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092491290] [2023-08-31 01:49:10,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:10,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:49:10,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:10,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:49:10,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:49:10,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 183 [2023-08-31 01:49:10,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 332 transitions, 4977 flow. Second operand has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:10,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:10,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 183 [2023-08-31 01:49:10,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:12,429 INFO L130 PetriNetUnfolder]: 5485/8593 cut-off events. [2023-08-31 01:49:12,429 INFO L131 PetriNetUnfolder]: For 332639/332863 co-relation queries the response was YES. [2023-08-31 01:49:12,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81368 conditions, 8593 events. 5485/8593 cut-off events. For 332639/332863 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 53081 event pairs, 1173 based on Foata normal form. 87/8616 useless extension candidates. Maximal degree in co-relation 78468. Up to 3603 conditions per place. [2023-08-31 01:49:12,522 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 305 selfloop transitions, 137 changer transitions 2/453 dead transitions. [2023-08-31 01:49:12,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 453 transitions, 7479 flow [2023-08-31 01:49:12,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:49:12,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:49:12,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 761 transitions. [2023-08-31 01:49:12,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519808743169399 [2023-08-31 01:49:12,525 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 761 transitions. [2023-08-31 01:49:12,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 761 transitions. [2023-08-31 01:49:12,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:12,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 761 transitions. [2023-08-31 01:49:12,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.125) internal successors, (761), 8 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:12,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:12,529 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:12,529 INFO L175 Difference]: Start difference. First operand has 180 places, 332 transitions, 4977 flow. Second operand 8 states and 761 transitions. [2023-08-31 01:49:12,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 453 transitions, 7479 flow [2023-08-31 01:49:13,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 453 transitions, 7364 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-08-31 01:49:13,433 INFO L231 Difference]: Finished difference. Result has 190 places, 352 transitions, 5779 flow [2023-08-31 01:49:13,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=4883, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5779, PETRI_PLACES=190, PETRI_TRANSITIONS=352} [2023-08-31 01:49:13,434 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2023-08-31 01:49:13,434 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 352 transitions, 5779 flow [2023-08-31 01:49:13,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:13,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:13,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:13,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-31 01:49:13,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:49:13,637 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:13,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:13,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2057093711, now seen corresponding path program 8 times [2023-08-31 01:49:13,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:13,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876763532] [2023-08-31 01:49:13,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:13,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:13,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:13,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:13,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876763532] [2023-08-31 01:49:13,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876763532] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:49:13,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033527946] [2023-08-31 01:49:13,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:49:13,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:49:13,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:49:13,815 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) [2023-08-31 01:49:13,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-31 01:49:13,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 01:49:13,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:49:13,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-31 01:49:13,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:49:14,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:14,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:49:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:14,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033527946] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:49:14,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:49:14,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2023-08-31 01:49:14,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34723461] [2023-08-31 01:49:14,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:14,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:49:14,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:14,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:49:14,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-31 01:49:14,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 183 [2023-08-31 01:49:14,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 352 transitions, 5779 flow. Second operand has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:14,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:14,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 183 [2023-08-31 01:49:14,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:15,853 INFO L130 PetriNetUnfolder]: 5466/8565 cut-off events. [2023-08-31 01:49:15,853 INFO L131 PetriNetUnfolder]: For 351116/351336 co-relation queries the response was YES. [2023-08-31 01:49:15,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82930 conditions, 8565 events. 5466/8565 cut-off events. For 351116/351336 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 53020 event pairs, 1550 based on Foata normal form. 78/8582 useless extension candidates. Maximal degree in co-relation 81793. Up to 4442 conditions per place. [2023-08-31 01:49:15,945 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 348 selfloop transitions, 58 changer transitions 1/416 dead transitions. [2023-08-31 01:49:15,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 416 transitions, 7302 flow [2023-08-31 01:49:15,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:49:15,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:49:15,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 570 transitions. [2023-08-31 01:49:15,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191256830601093 [2023-08-31 01:49:15,947 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 570 transitions. [2023-08-31 01:49:15,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 570 transitions. [2023-08-31 01:49:15,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:15,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 570 transitions. [2023-08-31 01:49:15,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:15,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:15,950 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:15,950 INFO L175 Difference]: Start difference. First operand has 190 places, 352 transitions, 5779 flow. Second operand 6 states and 570 transitions. [2023-08-31 01:49:15,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 416 transitions, 7302 flow [2023-08-31 01:49:16,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 416 transitions, 7266 flow, removed 18 selfloop flow, removed 0 redundant places. [2023-08-31 01:49:16,783 INFO L231 Difference]: Finished difference. Result has 198 places, 354 transitions, 5959 flow [2023-08-31 01:49:16,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=5757, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5959, PETRI_PLACES=198, PETRI_TRANSITIONS=354} [2023-08-31 01:49:16,784 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 169 predicate places. [2023-08-31 01:49:16,784 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 354 transitions, 5959 flow [2023-08-31 01:49:16,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:16,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:16,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:16,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-31 01:49:16,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:49:16,985 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:16,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:16,986 INFO L85 PathProgramCache]: Analyzing trace with hash 2059082981, now seen corresponding path program 9 times [2023-08-31 01:49:16,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:16,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083918741] [2023-08-31 01:49:16,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:16,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:17,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:17,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:17,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083918741] [2023-08-31 01:49:17,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083918741] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:49:17,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612178605] [2023-08-31 01:49:17,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 01:49:17,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:49:17,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:49:17,125 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) [2023-08-31 01:49:17,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-31 01:49:17,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 01:49:17,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:49:17,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-31 01:49:17,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:49:17,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:17,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:49:17,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:17,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612178605] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:49:17,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:49:17,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2023-08-31 01:49:17,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319210809] [2023-08-31 01:49:17,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:17,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:49:17,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:17,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:49:17,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:49:17,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 183 [2023-08-31 01:49:17,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 354 transitions, 5959 flow. Second operand has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:17,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:17,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 183 [2023-08-31 01:49:17,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:19,143 INFO L130 PetriNetUnfolder]: 5446/8525 cut-off events. [2023-08-31 01:49:19,143 INFO L131 PetriNetUnfolder]: For 350399/350619 co-relation queries the response was YES. [2023-08-31 01:49:19,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83208 conditions, 8525 events. 5446/8525 cut-off events. For 350399/350619 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 52671 event pairs, 1548 based on Foata normal form. 82/8546 useless extension candidates. Maximal degree in co-relation 82019. Up to 4442 conditions per place. [2023-08-31 01:49:19,223 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 345 selfloop transitions, 59 changer transitions 1/414 dead transitions. [2023-08-31 01:49:19,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 414 transitions, 7430 flow [2023-08-31 01:49:19,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:49:19,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:49:19,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 568 transitions. [2023-08-31 01:49:19,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.517304189435337 [2023-08-31 01:49:19,225 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 568 transitions. [2023-08-31 01:49:19,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 568 transitions. [2023-08-31 01:49:19,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:19,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 568 transitions. [2023-08-31 01:49:19,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:19,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:19,227 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:19,227 INFO L175 Difference]: Start difference. First operand has 198 places, 354 transitions, 5959 flow. Second operand 6 states and 568 transitions. [2023-08-31 01:49:19,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 414 transitions, 7430 flow [2023-08-31 01:49:19,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 414 transitions, 7351 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-31 01:49:19,999 INFO L231 Difference]: Finished difference. Result has 203 places, 355 transitions, 6049 flow [2023-08-31 01:49:19,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=5880, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6049, PETRI_PLACES=203, PETRI_TRANSITIONS=355} [2023-08-31 01:49:19,999 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 174 predicate places. [2023-08-31 01:49:19,999 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 355 transitions, 6049 flow [2023-08-31 01:49:20,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:20,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:20,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:20,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-31 01:49:20,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-31 01:49:20,201 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:20,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:20,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1605114923, now seen corresponding path program 10 times [2023-08-31 01:49:20,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:20,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462326850] [2023-08-31 01:49:20,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:20,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:20,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:20,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:20,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462326850] [2023-08-31 01:49:20,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462326850] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:49:20,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659127019] [2023-08-31 01:49:20,340 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 01:49:20,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:49:20,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:49:20,345 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) [2023-08-31 01:49:20,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-31 01:49:20,479 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 01:49:20,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:49:20,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-31 01:49:20,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:49:20,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:20,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:49:20,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:20,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659127019] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:49:20,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:49:20,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2023-08-31 01:49:20,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931254222] [2023-08-31 01:49:20,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:20,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:49:20,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:20,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:49:20,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-31 01:49:20,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 183 [2023-08-31 01:49:20,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 355 transitions, 6049 flow. Second operand has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:20,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:20,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 183 [2023-08-31 01:49:20,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:22,418 INFO L130 PetriNetUnfolder]: 5422/8471 cut-off events. [2023-08-31 01:49:22,418 INFO L131 PetriNetUnfolder]: For 352714/352934 co-relation queries the response was YES. [2023-08-31 01:49:22,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83004 conditions, 8471 events. 5422/8471 cut-off events. For 352714/352934 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 52067 event pairs, 1578 based on Foata normal form. 84/8494 useless extension candidates. Maximal degree in co-relation 81813. Up to 4572 conditions per place. [2023-08-31 01:49:22,505 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 340 selfloop transitions, 63 changer transitions 1/413 dead transitions. [2023-08-31 01:49:22,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 413 transitions, 7480 flow [2023-08-31 01:49:22,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:49:22,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:49:22,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 564 transitions. [2023-08-31 01:49:22,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136612021857924 [2023-08-31 01:49:22,507 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 564 transitions. [2023-08-31 01:49:22,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 564 transitions. [2023-08-31 01:49:22,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:22,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 564 transitions. [2023-08-31 01:49:22,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:22,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:22,511 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:22,511 INFO L175 Difference]: Start difference. First operand has 203 places, 355 transitions, 6049 flow. Second operand 6 states and 564 transitions. [2023-08-31 01:49:22,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 413 transitions, 7480 flow [2023-08-31 01:49:23,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 413 transitions, 7357 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-08-31 01:49:23,400 INFO L231 Difference]: Finished difference. Result has 207 places, 356 transitions, 6092 flow [2023-08-31 01:49:23,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=5926, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6092, PETRI_PLACES=207, PETRI_TRANSITIONS=356} [2023-08-31 01:49:23,401 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 178 predicate places. [2023-08-31 01:49:23,401 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 356 transitions, 6092 flow [2023-08-31 01:49:23,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:23,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:23,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:23,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-31 01:49:23,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-31 01:49:23,602 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:23,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:23,602 INFO L85 PathProgramCache]: Analyzing trace with hash -2101391605, now seen corresponding path program 4 times [2023-08-31 01:49:23,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:23,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125083348] [2023-08-31 01:49:23,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:23,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:23,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:23,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:23,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125083348] [2023-08-31 01:49:23,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125083348] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:23,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:23,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:49:23,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554908011] [2023-08-31 01:49:23,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:23,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:49:23,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:23,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:49:23,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:49:23,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 183 [2023-08-31 01:49:23,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 356 transitions, 6092 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:23,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:23,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 183 [2023-08-31 01:49:23,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:25,580 INFO L130 PetriNetUnfolder]: 5649/8869 cut-off events. [2023-08-31 01:49:25,581 INFO L131 PetriNetUnfolder]: For 368757/368757 co-relation queries the response was YES. [2023-08-31 01:49:25,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86873 conditions, 8869 events. 5649/8869 cut-off events. For 368757/368757 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 55105 event pairs, 2129 based on Foata normal form. 34/8897 useless extension candidates. Maximal degree in co-relation 86019. Up to 5954 conditions per place. [2023-08-31 01:49:25,670 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 401 selfloop transitions, 85 changer transitions 23/509 dead transitions. [2023-08-31 01:49:25,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 509 transitions, 9231 flow [2023-08-31 01:49:25,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:49:25,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:49:25,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 904 transitions. [2023-08-31 01:49:25,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49398907103825135 [2023-08-31 01:49:25,672 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 904 transitions. [2023-08-31 01:49:25,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 904 transitions. [2023-08-31 01:49:25,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:25,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 904 transitions. [2023-08-31 01:49:25,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 90.4) internal successors, (904), 10 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:25,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:25,676 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:25,676 INFO L175 Difference]: Start difference. First operand has 207 places, 356 transitions, 6092 flow. Second operand 10 states and 904 transitions. [2023-08-31 01:49:25,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 509 transitions, 9231 flow [2023-08-31 01:49:26,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 509 transitions, 9128 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-31 01:49:26,598 INFO L231 Difference]: Finished difference. Result has 221 places, 385 transitions, 6972 flow [2023-08-31 01:49:26,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=6001, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6972, PETRI_PLACES=221, PETRI_TRANSITIONS=385} [2023-08-31 01:49:26,598 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 192 predicate places. [2023-08-31 01:49:26,598 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 385 transitions, 6972 flow [2023-08-31 01:49:26,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:26,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:26,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:26,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 01:49:26,600 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:26,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:26,600 INFO L85 PathProgramCache]: Analyzing trace with hash -883658793, now seen corresponding path program 5 times [2023-08-31 01:49:26,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:26,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777222469] [2023-08-31 01:49:26,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:26,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:26,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:26,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777222469] [2023-08-31 01:49:26,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777222469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:26,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:26,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:49:26,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745508424] [2023-08-31 01:49:26,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:26,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:49:26,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:26,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:49:26,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:49:26,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 183 [2023-08-31 01:49:26,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 385 transitions, 6972 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:26,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:26,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 183 [2023-08-31 01:49:26,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:28,536 INFO L130 PetriNetUnfolder]: 5762/9055 cut-off events. [2023-08-31 01:49:28,536 INFO L131 PetriNetUnfolder]: For 450312/450312 co-relation queries the response was YES. [2023-08-31 01:49:28,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94011 conditions, 9055 events. 5762/9055 cut-off events. For 450312/450312 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 56601 event pairs, 2223 based on Foata normal form. 16/9065 useless extension candidates. Maximal degree in co-relation 93166. Up to 6198 conditions per place. [2023-08-31 01:49:28,638 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 395 selfloop transitions, 69 changer transitions 2/466 dead transitions. [2023-08-31 01:49:28,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 466 transitions, 9106 flow [2023-08-31 01:49:28,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:49:28,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:49:28,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 637 transitions. [2023-08-31 01:49:28,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972677595628415 [2023-08-31 01:49:28,639 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 637 transitions. [2023-08-31 01:49:28,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 637 transitions. [2023-08-31 01:49:28,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:28,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 637 transitions. [2023-08-31 01:49:28,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:28,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:28,642 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:28,642 INFO L175 Difference]: Start difference. First operand has 221 places, 385 transitions, 6972 flow. Second operand 7 states and 637 transitions. [2023-08-31 01:49:28,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 466 transitions, 9106 flow [2023-08-31 01:49:30,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 466 transitions, 8870 flow, removed 118 selfloop flow, removed 1 redundant places. [2023-08-31 01:49:30,096 INFO L231 Difference]: Finished difference. Result has 228 places, 399 transitions, 7318 flow [2023-08-31 01:49:30,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=6794, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7318, PETRI_PLACES=228, PETRI_TRANSITIONS=399} [2023-08-31 01:49:30,097 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 199 predicate places. [2023-08-31 01:49:30,097 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 399 transitions, 7318 flow [2023-08-31 01:49:30,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:30,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:30,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:30,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-31 01:49:30,098 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:30,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:30,098 INFO L85 PathProgramCache]: Analyzing trace with hash 691997847, now seen corresponding path program 6 times [2023-08-31 01:49:30,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:30,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662943475] [2023-08-31 01:49:30,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:30,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:30,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:30,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662943475] [2023-08-31 01:49:30,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662943475] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:30,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:30,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:49:30,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197466843] [2023-08-31 01:49:30,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:30,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:49:30,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:30,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:49:30,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:49:30,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 183 [2023-08-31 01:49:30,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 399 transitions, 7318 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:30,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:30,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 183 [2023-08-31 01:49:30,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:32,089 INFO L130 PetriNetUnfolder]: 5730/8987 cut-off events. [2023-08-31 01:49:32,089 INFO L131 PetriNetUnfolder]: For 437934/437934 co-relation queries the response was YES. [2023-08-31 01:49:32,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93047 conditions, 8987 events. 5730/8987 cut-off events. For 437934/437934 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 55727 event pairs, 2217 based on Foata normal form. 14/8995 useless extension candidates. Maximal degree in co-relation 92199. Up to 6198 conditions per place. [2023-08-31 01:49:32,194 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 381 selfloop transitions, 69 changer transitions 22/472 dead transitions. [2023-08-31 01:49:32,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 472 transitions, 9179 flow [2023-08-31 01:49:32,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:49:32,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:49:32,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 720 transitions. [2023-08-31 01:49:32,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918032786885246 [2023-08-31 01:49:32,196 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 720 transitions. [2023-08-31 01:49:32,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 720 transitions. [2023-08-31 01:49:32,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:32,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 720 transitions. [2023-08-31 01:49:32,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:32,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:32,199 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:32,199 INFO L175 Difference]: Start difference. First operand has 228 places, 399 transitions, 7318 flow. Second operand 8 states and 720 transitions. [2023-08-31 01:49:32,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 472 transitions, 9179 flow [2023-08-31 01:49:33,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 472 transitions, 9046 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-31 01:49:33,668 INFO L231 Difference]: Finished difference. Result has 235 places, 400 transitions, 7385 flow [2023-08-31 01:49:33,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=7187, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7385, PETRI_PLACES=235, PETRI_TRANSITIONS=400} [2023-08-31 01:49:33,669 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 206 predicate places. [2023-08-31 01:49:33,669 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 400 transitions, 7385 flow [2023-08-31 01:49:33,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:33,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:33,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:33,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-31 01:49:33,670 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:33,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:33,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1056469153, now seen corresponding path program 7 times [2023-08-31 01:49:33,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:33,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781260448] [2023-08-31 01:49:33,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:33,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:33,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:33,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:33,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781260448] [2023-08-31 01:49:33,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781260448] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:33,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:33,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:49:33,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026697250] [2023-08-31 01:49:33,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:33,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:49:33,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:33,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:49:33,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:49:33,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 183 [2023-08-31 01:49:33,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 400 transitions, 7385 flow. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:33,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:33,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 183 [2023-08-31 01:49:33,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:35,607 INFO L130 PetriNetUnfolder]: 5658/8855 cut-off events. [2023-08-31 01:49:35,607 INFO L131 PetriNetUnfolder]: For 438599/438599 co-relation queries the response was YES. [2023-08-31 01:49:35,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92122 conditions, 8855 events. 5658/8855 cut-off events. For 438599/438599 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 54754 event pairs, 2199 based on Foata normal form. 18/8867 useless extension candidates. Maximal degree in co-relation 91271. Up to 6198 conditions per place. [2023-08-31 01:49:35,720 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 390 selfloop transitions, 62 changer transitions 10/462 dead transitions. [2023-08-31 01:49:35,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 462 transitions, 9061 flow [2023-08-31 01:49:35,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:49:35,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:49:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 640 transitions. [2023-08-31 01:49:35,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4996096799375488 [2023-08-31 01:49:35,722 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 640 transitions. [2023-08-31 01:49:35,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 640 transitions. [2023-08-31 01:49:35,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:35,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 640 transitions. [2023-08-31 01:49:35,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.42857142857143) internal successors, (640), 7 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:35,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:35,725 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:35,725 INFO L175 Difference]: Start difference. First operand has 235 places, 400 transitions, 7385 flow. Second operand 7 states and 640 transitions. [2023-08-31 01:49:35,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 462 transitions, 9061 flow [2023-08-31 01:49:37,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 462 transitions, 8916 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-08-31 01:49:37,311 INFO L231 Difference]: Finished difference. Result has 237 places, 399 transitions, 7359 flow [2023-08-31 01:49:37,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=7204, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7359, PETRI_PLACES=237, PETRI_TRANSITIONS=399} [2023-08-31 01:49:37,312 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 208 predicate places. [2023-08-31 01:49:37,312 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 399 transitions, 7359 flow [2023-08-31 01:49:37,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:37,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:37,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:37,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-31 01:49:37,313 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:37,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:37,313 INFO L85 PathProgramCache]: Analyzing trace with hash -461893579, now seen corresponding path program 8 times [2023-08-31 01:49:37,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:37,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381794992] [2023-08-31 01:49:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:37,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:37,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:37,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:37,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381794992] [2023-08-31 01:49:37,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381794992] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:49:37,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543976516] [2023-08-31 01:49:37,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:49:37,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:49:37,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:49:37,473 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) [2023-08-31 01:49:37,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-31 01:49:37,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 01:49:37,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:49:37,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-31 01:49:37,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:49:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:37,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:49:38,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:38,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543976516] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:49:38,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:49:38,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 17 [2023-08-31 01:49:38,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401146403] [2023-08-31 01:49:38,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:38,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:49:38,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:38,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:49:38,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-08-31 01:49:38,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 183 [2023-08-31 01:49:38,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 399 transitions, 7359 flow. Second operand has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:38,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:38,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 183 [2023-08-31 01:49:38,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:39,769 INFO L130 PetriNetUnfolder]: 5793/9082 cut-off events. [2023-08-31 01:49:39,769 INFO L131 PetriNetUnfolder]: For 488806/489239 co-relation queries the response was YES. [2023-08-31 01:49:39,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96408 conditions, 9082 events. 5793/9082 cut-off events. For 488806/489239 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 57293 event pairs, 1285 based on Foata normal form. 248/9194 useless extension candidates. Maximal degree in co-relation 95299. Up to 4452 conditions per place. [2023-08-31 01:49:39,888 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 319 selfloop transitions, 131 changer transitions 5/480 dead transitions. [2023-08-31 01:49:39,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 480 transitions, 9703 flow [2023-08-31 01:49:39,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:49:39,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:49:39,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 557 transitions. [2023-08-31 01:49:39,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072859744990893 [2023-08-31 01:49:39,889 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 557 transitions. [2023-08-31 01:49:39,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 557 transitions. [2023-08-31 01:49:39,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:39,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 557 transitions. [2023-08-31 01:49:39,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:39,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:39,891 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:39,891 INFO L175 Difference]: Start difference. First operand has 237 places, 399 transitions, 7359 flow. Second operand 6 states and 557 transitions. [2023-08-31 01:49:39,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 480 transitions, 9703 flow [2023-08-31 01:49:41,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 480 transitions, 9519 flow, removed 24 selfloop flow, removed 3 redundant places. [2023-08-31 01:49:41,306 INFO L231 Difference]: Finished difference. Result has 242 places, 419 transitions, 8148 flow [2023-08-31 01:49:41,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=7227, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8148, PETRI_PLACES=242, PETRI_TRANSITIONS=419} [2023-08-31 01:49:41,306 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 213 predicate places. [2023-08-31 01:49:41,307 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 419 transitions, 8148 flow [2023-08-31 01:49:41,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:41,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:41,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:41,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-31 01:49:41,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:49:41,507 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:41,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:41,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1245492377, now seen corresponding path program 11 times [2023-08-31 01:49:41,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:41,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565206618] [2023-08-31 01:49:41,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:41,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:41,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:41,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565206618] [2023-08-31 01:49:41,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565206618] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:49:41,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:49:41,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:49:41,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381713329] [2023-08-31 01:49:41,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:49:41,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:49:41,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:41,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:49:41,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:49:41,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 183 [2023-08-31 01:49:41,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 419 transitions, 8148 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:41,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:41,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 183 [2023-08-31 01:49:41,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:44,107 INFO L130 PetriNetUnfolder]: 6047/9542 cut-off events. [2023-08-31 01:49:44,108 INFO L131 PetriNetUnfolder]: For 490001/490001 co-relation queries the response was YES. [2023-08-31 01:49:44,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101074 conditions, 9542 events. 6047/9542 cut-off events. For 490001/490001 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 60313 event pairs, 1676 based on Foata normal form. 28/9564 useless extension candidates. Maximal degree in co-relation 99937. Up to 4073 conditions per place. [2023-08-31 01:49:44,254 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 342 selfloop transitions, 204 changer transitions 6/552 dead transitions. [2023-08-31 01:49:44,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 552 transitions, 11297 flow [2023-08-31 01:49:44,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:49:44,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:49:44,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 917 transitions. [2023-08-31 01:49:44,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5010928961748634 [2023-08-31 01:49:44,256 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 917 transitions. [2023-08-31 01:49:44,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 917 transitions. [2023-08-31 01:49:44,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:44,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 917 transitions. [2023-08-31 01:49:44,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.7) internal successors, (917), 10 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:44,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:44,258 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:44,258 INFO L175 Difference]: Start difference. First operand has 242 places, 419 transitions, 8148 flow. Second operand 10 states and 917 transitions. [2023-08-31 01:49:44,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 552 transitions, 11297 flow [2023-08-31 01:49:46,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 552 transitions, 11208 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-31 01:49:46,089 INFO L231 Difference]: Finished difference. Result has 256 places, 444 transitions, 9394 flow [2023-08-31 01:49:46,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=8072, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9394, PETRI_PLACES=256, PETRI_TRANSITIONS=444} [2023-08-31 01:49:46,090 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 227 predicate places. [2023-08-31 01:49:46,090 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 444 transitions, 9394 flow [2023-08-31 01:49:46,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:46,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:46,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:46,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-31 01:49:46,091 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:46,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:46,091 INFO L85 PathProgramCache]: Analyzing trace with hash -44258073, now seen corresponding path program 12 times [2023-08-31 01:49:46,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:46,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833342523] [2023-08-31 01:49:46,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:46,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:46,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:46,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:46,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833342523] [2023-08-31 01:49:46,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833342523] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:49:46,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16481398] [2023-08-31 01:49:46,229 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 01:49:46,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:49:46,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:49:46,233 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) [2023-08-31 01:49:46,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-31 01:49:46,364 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-31 01:49:46,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:49:46,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-31 01:49:46,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:49:46,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:46,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:49:48,740 WARN L839 $PredicateComparison]: unable to prove that (forall ((aux_mod_~a~0_21 Int)) (or (>= aux_mod_~a~0_21 4294967296) (<= aux_mod_~a~0_21 (mod c_thread1Thread1of1ForFork1_~i~0 4294967296)) (let ((.cse0 (* 4294967295 aux_mod_~a~0_21))) (< (+ (* 4294967296 (div .cse0 4294967296)) (mod c_thread2Thread1of1ForFork2_~i~1 4294967296)) .cse0)))) is different from false [2023-08-31 01:49:48,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-31 01:49:48,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16481398] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:49:48,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:49:48,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 12 [2023-08-31 01:49:48,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782422934] [2023-08-31 01:49:48,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:49:48,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:49:48,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:48,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:49:48,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=83, Unknown=1, NotChecked=18, Total=132 [2023-08-31 01:49:48,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2023-08-31 01:49:48,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 444 transitions, 9394 flow. Second operand has 12 states, 12 states have (on average 77.66666666666667) internal successors, (932), 12 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:48,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:48,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2023-08-31 01:49:48,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:51,703 INFO L130 PetriNetUnfolder]: 7407/11599 cut-off events. [2023-08-31 01:49:51,703 INFO L131 PetriNetUnfolder]: For 659563/659563 co-relation queries the response was YES. [2023-08-31 01:49:51,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129495 conditions, 11599 events. 7407/11599 cut-off events. For 659563/659563 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 74876 event pairs, 2323 based on Foata normal form. 16/11609 useless extension candidates. Maximal degree in co-relation 128414. Up to 6511 conditions per place. [2023-08-31 01:49:51,840 INFO L137 encePairwiseOnDemand]: 169/183 looper letters, 469 selfloop transitions, 193 changer transitions 2/664 dead transitions. [2023-08-31 01:49:51,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 664 transitions, 14560 flow [2023-08-31 01:49:51,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:49:51,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:49:51,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 970 transitions. [2023-08-31 01:49:51,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48186785891703926 [2023-08-31 01:49:51,842 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 970 transitions. [2023-08-31 01:49:51,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 970 transitions. [2023-08-31 01:49:51,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:51,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 970 transitions. [2023-08-31 01:49:51,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 88.18181818181819) internal successors, (970), 11 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:51,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:51,845 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:51,845 INFO L175 Difference]: Start difference. First operand has 256 places, 444 transitions, 9394 flow. Second operand 11 states and 970 transitions. [2023-08-31 01:49:51,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 664 transitions, 14560 flow [2023-08-31 01:49:54,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 664 transitions, 14338 flow, removed 46 selfloop flow, removed 2 redundant places. [2023-08-31 01:49:54,621 INFO L231 Difference]: Finished difference. Result has 271 places, 529 transitions, 12026 flow [2023-08-31 01:49:54,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=9202, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12026, PETRI_PLACES=271, PETRI_TRANSITIONS=529} [2023-08-31 01:49:54,622 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 242 predicate places. [2023-08-31 01:49:54,622 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 529 transitions, 12026 flow [2023-08-31 01:49:54,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 77.66666666666667) internal successors, (932), 12 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:54,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:49:54,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:49:54,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-31 01:49:54,827 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,SelfDestructingSolverStorable20 [2023-08-31 01:49:54,828 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:49:54,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:49:54,828 INFO L85 PathProgramCache]: Analyzing trace with hash -2089958009, now seen corresponding path program 9 times [2023-08-31 01:49:54,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:49:54,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722120978] [2023-08-31 01:49:54,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:49:54,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:49:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:49:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:54,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:49:54,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722120978] [2023-08-31 01:49:54,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722120978] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:49:54,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034031094] [2023-08-31 01:49:54,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 01:49:54,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:49:54,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:49:54,981 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) [2023-08-31 01:49:55,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-31 01:49:55,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 01:49:55,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:49:55,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 01:49:55,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:49:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:55,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:49:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:49:55,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034031094] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:49:55,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:49:55,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 13 [2023-08-31 01:49:55,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039616696] [2023-08-31 01:49:55,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:49:55,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:49:55,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:49:55,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:49:55,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:49:55,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 183 [2023-08-31 01:49:55,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 529 transitions, 12026 flow. Second operand has 13 states, 13 states have (on average 81.23076923076923) internal successors, (1056), 13 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:55,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:49:55,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 183 [2023-08-31 01:49:55,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:49:59,134 INFO L130 PetriNetUnfolder]: 8273/13053 cut-off events. [2023-08-31 01:49:59,134 INFO L131 PetriNetUnfolder]: For 782692/782692 co-relation queries the response was YES. [2023-08-31 01:49:59,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152499 conditions, 13053 events. 8273/13053 cut-off events. For 782692/782692 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 87458 event pairs, 1902 based on Foata normal form. 38/13085 useless extension candidates. Maximal degree in co-relation 151334. Up to 6088 conditions per place. [2023-08-31 01:49:59,297 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 451 selfloop transitions, 264 changer transitions 4/719 dead transitions. [2023-08-31 01:49:59,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 719 transitions, 16484 flow [2023-08-31 01:49:59,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 01:49:59,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 01:49:59,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1108 transitions. [2023-08-31 01:49:59,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045537340619308 [2023-08-31 01:49:59,299 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1108 transitions. [2023-08-31 01:49:59,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1108 transitions. [2023-08-31 01:49:59,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:49:59,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1108 transitions. [2023-08-31 01:49:59,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 92.33333333333333) internal successors, (1108), 12 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:59,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:59,303 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:49:59,303 INFO L175 Difference]: Start difference. First operand has 271 places, 529 transitions, 12026 flow. Second operand 12 states and 1108 transitions. [2023-08-31 01:49:59,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 719 transitions, 16484 flow [2023-08-31 01:50:03,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 719 transitions, 15975 flow, removed 146 selfloop flow, removed 6 redundant places. [2023-08-31 01:50:03,736 INFO L231 Difference]: Finished difference. Result has 280 places, 582 transitions, 13589 flow [2023-08-31 01:50:03,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=11558, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13589, PETRI_PLACES=280, PETRI_TRANSITIONS=582} [2023-08-31 01:50:03,736 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 251 predicate places. [2023-08-31 01:50:03,736 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 582 transitions, 13589 flow [2023-08-31 01:50:03,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 81.23076923076923) internal successors, (1056), 13 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:03,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:50:03,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:50:03,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-31 01:50:03,937 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,SelfDestructingSolverStorable21 [2023-08-31 01:50:03,937 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:50:03,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:50:03,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1972505795, now seen corresponding path program 13 times [2023-08-31 01:50:03,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:50:03,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54185263] [2023-08-31 01:50:03,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:50:03,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:50:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:50:04,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:50:04,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:50:04,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54185263] [2023-08-31 01:50:04,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54185263] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:50:04,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135746211] [2023-08-31 01:50:04,090 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-31 01:50:04,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:50:04,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:50:04,093 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) [2023-08-31 01:50:04,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-31 01:50:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:50:04,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-31 01:50:04,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:50:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:50:04,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:50:06,523 WARN L839 $PredicateComparison]: unable to prove that (forall ((aux_mod_~a~0_21 Int)) (or (>= aux_mod_~a~0_21 4294967296) (<= aux_mod_~a~0_21 (mod c_thread1Thread1of1ForFork1_~i~0 4294967296)) (let ((.cse0 (* 4294967295 aux_mod_~a~0_21))) (< (+ (* 4294967296 (div .cse0 4294967296)) (mod c_thread2Thread1of1ForFork2_~i~1 4294967296)) .cse0)))) is different from false [2023-08-31 01:50:06,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-31 01:50:06,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135746211] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:50:06,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:50:06,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 12 [2023-08-31 01:50:06,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990007267] [2023-08-31 01:50:06,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:50:06,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:50:06,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:50:06,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:50:06,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=82, Unknown=1, NotChecked=18, Total=132 [2023-08-31 01:50:06,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2023-08-31 01:50:06,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 582 transitions, 13589 flow. Second operand has 12 states, 12 states have (on average 78.0) internal successors, (936), 12 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:06,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:50:06,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2023-08-31 01:50:06,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:50:08,781 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((aux_mod_~a~0_21 Int)) (or (>= aux_mod_~a~0_21 4294967296) (<= aux_mod_~a~0_21 (mod c_thread1Thread1of1ForFork1_~i~0 4294967296)) (let ((.cse0 (* 4294967295 aux_mod_~a~0_21))) (< (+ (* 4294967296 (div .cse0 4294967296)) (mod c_thread2Thread1of1ForFork2_~i~1 4294967296)) .cse0)))) (<= (div (+ c_~b~0 c_~a~0) 4294967296) (div (+ (- 1) c_~b~0 c_~a~0) 4294967296))) is different from false [2023-08-31 01:50:12,412 INFO L130 PetriNetUnfolder]: 9154/14408 cut-off events. [2023-08-31 01:50:12,412 INFO L131 PetriNetUnfolder]: For 866980/866980 co-relation queries the response was YES. [2023-08-31 01:50:12,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169147 conditions, 14408 events. 9154/14408 cut-off events. For 866980/866980 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 97560 event pairs, 2148 based on Foata normal form. 16/14418 useless extension candidates. Maximal degree in co-relation 168235. Up to 6783 conditions per place. [2023-08-31 01:50:12,737 INFO L137 encePairwiseOnDemand]: 169/183 looper letters, 459 selfloop transitions, 380 changer transitions 4/843 dead transitions. [2023-08-31 01:50:12,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 843 transitions, 19315 flow [2023-08-31 01:50:12,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-31 01:50:12,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-31 01:50:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1494 transitions. [2023-08-31 01:50:12,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4802314368370299 [2023-08-31 01:50:12,740 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1494 transitions. [2023-08-31 01:50:12,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1494 transitions. [2023-08-31 01:50:12,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:50:12,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1494 transitions. [2023-08-31 01:50:12,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 87.88235294117646) internal successors, (1494), 17 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:12,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:12,745 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:12,745 INFO L175 Difference]: Start difference. First operand has 280 places, 582 transitions, 13589 flow. Second operand 17 states and 1494 transitions. [2023-08-31 01:50:12,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 843 transitions, 19315 flow [2023-08-31 01:50:17,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 843 transitions, 18960 flow, removed 23 selfloop flow, removed 3 redundant places. [2023-08-31 01:50:17,085 INFO L231 Difference]: Finished difference. Result has 299 places, 634 transitions, 15577 flow [2023-08-31 01:50:17,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=13264, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=15577, PETRI_PLACES=299, PETRI_TRANSITIONS=634} [2023-08-31 01:50:17,086 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 270 predicate places. [2023-08-31 01:50:17,087 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 634 transitions, 15577 flow [2023-08-31 01:50:17,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 78.0) internal successors, (936), 12 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:17,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:50:17,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:50:17,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-31 01:50:17,287 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,SelfDestructingSolverStorable22 [2023-08-31 01:50:17,288 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:50:17,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:50:17,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1078947137, now seen corresponding path program 14 times [2023-08-31 01:50:17,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:50:17,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182035882] [2023-08-31 01:50:17,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:50:17,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:50:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:50:17,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:50:17,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:50:17,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182035882] [2023-08-31 01:50:17,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182035882] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:50:17,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267076177] [2023-08-31 01:50:17,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:50:17,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:50:17,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:50:17,404 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) [2023-08-31 01:50:17,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-31 01:50:17,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 01:50:17,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:50:17,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-31 01:50:17,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:50:17,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:50:17,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:50:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:50:17,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267076177] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:50:17,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:50:17,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 10 [2023-08-31 01:50:17,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565759020] [2023-08-31 01:50:17,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:50:17,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 01:50:17,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:50:17,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 01:50:17,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-31 01:50:17,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 183 [2023-08-31 01:50:17,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 634 transitions, 15577 flow. Second operand has 10 states, 10 states have (on average 81.8) internal successors, (818), 10 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:17,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:50:17,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 183 [2023-08-31 01:50:17,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:50:22,068 INFO L130 PetriNetUnfolder]: 9778/15423 cut-off events. [2023-08-31 01:50:22,068 INFO L131 PetriNetUnfolder]: For 977518/977518 co-relation queries the response was YES. [2023-08-31 01:50:22,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186818 conditions, 15423 events. 9778/15423 cut-off events. For 977518/977518 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 106472 event pairs, 1831 based on Foata normal form. 29/15452 useless extension candidates. Maximal degree in co-relation 185448. Up to 7288 conditions per place. [2023-08-31 01:50:22,276 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 544 selfloop transitions, 371 changer transitions 5/920 dead transitions. [2023-08-31 01:50:22,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 920 transitions, 21880 flow [2023-08-31 01:50:22,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-31 01:50:22,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-31 01:50:22,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1473 transitions. [2023-08-31 01:50:22,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030737704918032 [2023-08-31 01:50:22,279 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1473 transitions. [2023-08-31 01:50:22,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1473 transitions. [2023-08-31 01:50:22,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:50:22,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1473 transitions. [2023-08-31 01:50:22,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 92.0625) internal successors, (1473), 16 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:22,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:22,283 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:22,283 INFO L175 Difference]: Start difference. First operand has 299 places, 634 transitions, 15577 flow. Second operand 16 states and 1473 transitions. [2023-08-31 01:50:22,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 920 transitions, 21880 flow [2023-08-31 01:50:27,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 920 transitions, 21418 flow, removed 151 selfloop flow, removed 3 redundant places. [2023-08-31 01:50:27,281 INFO L231 Difference]: Finished difference. Result has 318 places, 689 transitions, 17771 flow [2023-08-31 01:50:27,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=15266, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=321, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=17771, PETRI_PLACES=318, PETRI_TRANSITIONS=689} [2023-08-31 01:50:27,282 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 289 predicate places. [2023-08-31 01:50:27,282 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 689 transitions, 17771 flow [2023-08-31 01:50:27,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 81.8) internal successors, (818), 10 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:27,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:50:27,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:50:27,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-31 01:50:27,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:50:27,483 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:50:27,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:50:27,483 INFO L85 PathProgramCache]: Analyzing trace with hash 781778029, now seen corresponding path program 15 times [2023-08-31 01:50:27,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:50:27,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938477783] [2023-08-31 01:50:27,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:50:27,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:50:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:50:27,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:50:27,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:50:27,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938477783] [2023-08-31 01:50:27,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938477783] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:50:27,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79682295] [2023-08-31 01:50:27,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 01:50:27,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:50:27,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:50:27,609 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) [2023-08-31 01:50:27,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-31 01:50:27,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 01:50:27,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:50:27,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-31 01:50:27,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:50:27,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:50:27,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:50:30,004 WARN L839 $PredicateComparison]: unable to prove that (forall ((aux_mod_~a~0_21 Int)) (or (>= aux_mod_~a~0_21 4294967296) (<= aux_mod_~a~0_21 (mod c_thread1Thread1of1ForFork1_~i~0 4294967296)) (let ((.cse0 (* 4294967295 aux_mod_~a~0_21))) (< (+ (* 4294967296 (div .cse0 4294967296)) (mod c_thread2Thread1of1ForFork2_~i~1 4294967296)) .cse0)))) is different from false [2023-08-31 01:50:30,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-31 01:50:30,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79682295] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:50:30,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:50:30,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 17 [2023-08-31 01:50:30,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555281714] [2023-08-31 01:50:30,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:50:30,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-31 01:50:30,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:50:30,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-31 01:50:30,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=187, Unknown=1, NotChecked=28, Total=272 [2023-08-31 01:50:30,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-08-31 01:50:30,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 689 transitions, 17771 flow. Second operand has 17 states, 17 states have (on average 74.82352941176471) internal successors, (1272), 17 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:30,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:50:30,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-08-31 01:50:30,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:50:32,485 WARN L839 $PredicateComparison]: unable to prove that (and (= c_~x_3~0 0) (forall ((aux_mod_~a~0_21 Int)) (or (>= aux_mod_~a~0_21 4294967296) (<= aux_mod_~a~0_21 (mod c_thread1Thread1of1ForFork1_~i~0 4294967296)) (let ((.cse0 (* 4294967295 aux_mod_~a~0_21))) (< (+ (* 4294967296 (div .cse0 4294967296)) (mod c_thread2Thread1of1ForFork2_~i~1 4294967296)) .cse0))))) is different from false [2023-08-31 01:50:37,852 INFO L130 PetriNetUnfolder]: 11640/18378 cut-off events. [2023-08-31 01:50:37,853 INFO L131 PetriNetUnfolder]: For 1186908/1186908 co-relation queries the response was YES. [2023-08-31 01:50:38,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223250 conditions, 18378 events. 11640/18378 cut-off events. For 1186908/1186908 co-relation queries the response was YES. Maximal size of possible extension queue 1045. Compared 129732 event pairs, 2337 based on Foata normal form. 18/18396 useless extension candidates. Maximal degree in co-relation 221932. Up to 8386 conditions per place. [2023-08-31 01:50:38,128 INFO L137 encePairwiseOnDemand]: 168/183 looper letters, 617 selfloop transitions, 343 changer transitions 3/963 dead transitions. [2023-08-31 01:50:38,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 963 transitions, 24903 flow [2023-08-31 01:50:38,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-31 01:50:38,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-31 01:50:38,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1359 transitions. [2023-08-31 01:50:38,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641393442622951 [2023-08-31 01:50:38,130 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1359 transitions. [2023-08-31 01:50:38,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1359 transitions. [2023-08-31 01:50:38,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:50:38,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1359 transitions. [2023-08-31 01:50:38,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 84.9375) internal successors, (1359), 16 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:38,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:38,134 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:38,134 INFO L175 Difference]: Start difference. First operand has 318 places, 689 transitions, 17771 flow. Second operand 16 states and 1359 transitions. [2023-08-31 01:50:38,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 963 transitions, 24903 flow [2023-08-31 01:50:44,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 963 transitions, 23869 flow, removed 158 selfloop flow, removed 6 redundant places. [2023-08-31 01:50:44,881 INFO L231 Difference]: Finished difference. Result has 332 places, 746 transitions, 19643 flow [2023-08-31 01:50:44,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=16992, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=19643, PETRI_PLACES=332, PETRI_TRANSITIONS=746} [2023-08-31 01:50:44,882 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 303 predicate places. [2023-08-31 01:50:44,882 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 746 transitions, 19643 flow [2023-08-31 01:50:44,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 74.82352941176471) internal successors, (1272), 17 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:44,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:50:44,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:50:44,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-31 01:50:45,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:50:45,087 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:50:45,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:50:45,088 INFO L85 PathProgramCache]: Analyzing trace with hash -116842195, now seen corresponding path program 16 times [2023-08-31 01:50:45,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:50:45,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730348152] [2023-08-31 01:50:45,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:50:45,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:50:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:50:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:50:45,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:50:45,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730348152] [2023-08-31 01:50:45,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730348152] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:50:45,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495282248] [2023-08-31 01:50:45,207 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 01:50:45,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:50:45,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:50:45,209 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) [2023-08-31 01:50:45,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-31 01:50:45,318 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 01:50:45,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:50:45,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-31 01:50:45,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:50:45,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:50:45,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:50:51,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:50:51,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495282248] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:50:51,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:50:51,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 19 [2023-08-31 01:50:51,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258916599] [2023-08-31 01:50:51,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:50:51,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-31 01:50:51,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:50:51,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-31 01:50:51,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=262, Unknown=3, NotChecked=0, Total=342 [2023-08-31 01:50:52,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 183 [2023-08-31 01:50:52,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 746 transitions, 19643 flow. Second operand has 19 states, 19 states have (on average 79.42105263157895) internal successors, (1509), 19 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:50:52,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:50:52,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 183 [2023-08-31 01:50:52,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:51:06,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:08,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:10,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:12,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:14,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:16,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:18,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:20,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:22,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:24,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:26,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:28,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:30,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:32,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:34,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:36,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:39,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:41,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:43,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:45,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:47,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:49,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:51,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:53,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:55,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:57,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:51:59,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:01,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:03,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:05,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:07,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:09,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:11,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:13,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:15,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:17,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:19,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:21,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:23,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:25,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:27,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:29,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:31,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:33,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:36,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:38,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:40,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:42,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:44,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:46,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:48,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:50,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:52,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:54,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:56,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:52:58,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:53:00,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:53:02,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:53:04,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:53:06,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:53:08,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:53:10,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:53:12,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:53:14,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:53:16,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:53:21,119 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_thread3Thread1of1ForFork0_~i~2 4294967296))) (and (= c_~x_3~0 0) (let ((.cse0 (* 4294967295 c_~a~0))) (< (* (div (+ .cse0 .cse1) 4294967296) 4294967296) .cse0)) (forall ((aux_div_aux_mod_~a~0_21_32 Int) (aux_mod_aux_mod_~a~0_21_32 Int)) (let ((.cse3 (+ aux_mod_aux_mod_~a~0_21_32 (* aux_div_aux_mod_~a~0_21_32 4294967296)))) (or (let ((.cse2 (* aux_mod_aux_mod_~a~0_21_32 4294967295))) (< (* (div (+ .cse2 .cse1) 4294967296) 4294967296) .cse2)) (<= aux_mod_aux_mod_~a~0_21_32 (mod c_thread1Thread1of1ForFork1_~i~0 4294967296)) (< (mod (+ c_thread1Thread1of1ForFork1_~i~0 1) 4294967296) .cse3) (< .cse3 0) (>= aux_mod_aux_mod_~a~0_21_32 4294967296)))))) is different from false [2023-08-31 01:53:23,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:53:25,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:53:27,693 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_thread3Thread1of1ForFork0_~i~2 4294967296))) (and (let ((.cse0 (* 4294967295 c_~a~0))) (< (* (div (+ .cse0 .cse1) 4294967296) 4294967296) .cse0)) (forall ((aux_div_aux_mod_~a~0_21_32 Int) (aux_mod_aux_mod_~a~0_21_32 Int)) (let ((.cse3 (+ aux_mod_aux_mod_~a~0_21_32 (* aux_div_aux_mod_~a~0_21_32 4294967296)))) (or (let ((.cse2 (* aux_mod_aux_mod_~a~0_21_32 4294967295))) (< (* (div (+ .cse2 .cse1) 4294967296) 4294967296) .cse2)) (<= aux_mod_aux_mod_~a~0_21_32 (mod c_thread1Thread1of1ForFork1_~i~0 4294967296)) (< (mod (+ c_thread1Thread1of1ForFork1_~i~0 1) 4294967296) .cse3) (< .cse3 0) (>= aux_mod_aux_mod_~a~0_21_32 4294967296)))))) is different from false [2023-08-31 01:53:29,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:53:32,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:53:34,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:53:36,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:53:42,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:53:44,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 01:53:47,320 INFO L130 PetriNetUnfolder]: 15369/24496 cut-off events. [2023-08-31 01:53:47,320 INFO L131 PetriNetUnfolder]: For 1545778/1545778 co-relation queries the response was YES. [2023-08-31 01:53:47,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296494 conditions, 24496 events. 15369/24496 cut-off events. For 1545778/1545778 co-relation queries the response was YES. Maximal size of possible extension queue 1459. Compared 184134 event pairs, 2203 based on Foata normal form. 32/24528 useless extension candidates. Maximal degree in co-relation 294797. Up to 11435 conditions per place. [2023-08-31 01:53:47,849 INFO L137 encePairwiseOnDemand]: 171/183 looper letters, 812 selfloop transitions, 654 changer transitions 4/1470 dead transitions. [2023-08-31 01:53:47,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 1470 transitions, 39833 flow [2023-08-31 01:53:47,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-31 01:53:47,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-31 01:53:47,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2361 transitions. [2023-08-31 01:53:47,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47783849423193686 [2023-08-31 01:53:47,853 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2361 transitions. [2023-08-31 01:53:47,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2361 transitions. [2023-08-31 01:53:47,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:53:47,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2361 transitions. [2023-08-31 01:53:47,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 87.44444444444444) internal successors, (2361), 27 states have internal predecessors, (2361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:47,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 183.0) internal successors, (5124), 28 states have internal predecessors, (5124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:47,859 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 183.0) internal successors, (5124), 28 states have internal predecessors, (5124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:47,859 INFO L175 Difference]: Start difference. First operand has 332 places, 746 transitions, 19643 flow. Second operand 27 states and 2361 transitions. [2023-08-31 01:53:47,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 1470 transitions, 39833 flow [2023-08-31 01:53:58,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 1470 transitions, 39224 flow, removed 67 selfloop flow, removed 7 redundant places. [2023-08-31 01:53:58,149 INFO L231 Difference]: Finished difference. Result has 369 places, 1072 transitions, 30762 flow [2023-08-31 01:53:58,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=19291, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=353, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=30762, PETRI_PLACES=369, PETRI_TRANSITIONS=1072} [2023-08-31 01:53:58,150 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 340 predicate places. [2023-08-31 01:53:58,150 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 1072 transitions, 30762 flow [2023-08-31 01:53:58,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.42105263157895) internal successors, (1509), 19 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:58,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:53:58,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:53:58,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-31 01:53:58,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-31 01:53:58,351 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:53:58,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:53:58,352 INFO L85 PathProgramCache]: Analyzing trace with hash 945521035, now seen corresponding path program 10 times [2023-08-31 01:53:58,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:53:58,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521156615] [2023-08-31 01:53:58,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:53:58,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:53:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:53:58,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:53:58,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:53:58,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521156615] [2023-08-31 01:53:58,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521156615] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:53:58,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:53:58,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:53:58,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082803934] [2023-08-31 01:53:58,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:53:58,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:53:58,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:53:58,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:53:58,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:53:58,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 183 [2023-08-31 01:53:58,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 1072 transitions, 30762 flow. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:53:58,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:53:58,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 183 [2023-08-31 01:53:58,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:54:07,858 INFO L130 PetriNetUnfolder]: 15370/24530 cut-off events. [2023-08-31 01:54:07,858 INFO L131 PetriNetUnfolder]: For 1972408/1972408 co-relation queries the response was YES. [2023-08-31 01:54:08,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336359 conditions, 24530 events. 15370/24530 cut-off events. For 1972408/1972408 co-relation queries the response was YES. Maximal size of possible extension queue 1456. Compared 184959 event pairs, 5417 based on Foata normal form. 24/24554 useless extension candidates. Maximal degree in co-relation 335215. Up to 18632 conditions per place. [2023-08-31 01:54:08,332 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 987 selfloop transitions, 127 changer transitions 19/1133 dead transitions. [2023-08-31 01:54:08,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 1133 transitions, 33973 flow [2023-08-31 01:54:08,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:54:08,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:54:08,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 644 transitions. [2023-08-31 01:54:08,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027322404371585 [2023-08-31 01:54:08,448 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 644 transitions. [2023-08-31 01:54:08,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 644 transitions. [2023-08-31 01:54:08,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:54:08,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 644 transitions. [2023-08-31 01:54:08,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:08,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:08,450 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:08,450 INFO L175 Difference]: Start difference. First operand has 369 places, 1072 transitions, 30762 flow. Second operand 7 states and 644 transitions. [2023-08-31 01:54:08,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 1133 transitions, 33973 flow [2023-08-31 01:54:23,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 1133 transitions, 32271 flow, removed 562 selfloop flow, removed 3 redundant places. [2023-08-31 01:54:23,534 INFO L231 Difference]: Finished difference. Result has 375 places, 1071 transitions, 29310 flow [2023-08-31 01:54:23,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=29028, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1071, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=944, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=29310, PETRI_PLACES=375, PETRI_TRANSITIONS=1071} [2023-08-31 01:54:23,535 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 346 predicate places. [2023-08-31 01:54:23,535 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 1071 transitions, 29310 flow [2023-08-31 01:54:23,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:23,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:54:23,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:54:23,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-31 01:54:23,535 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:54:23,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:54:23,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1715774453, now seen corresponding path program 11 times [2023-08-31 01:54:23,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:54:23,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574257654] [2023-08-31 01:54:23,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:54:23,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:54:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:54:23,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:54:23,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:54:23,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574257654] [2023-08-31 01:54:23,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574257654] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:54:23,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:54:23,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:54:23,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172743391] [2023-08-31 01:54:23,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:54:23,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:54:23,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:54:23,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:54:23,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:54:23,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 183 [2023-08-31 01:54:23,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 1071 transitions, 29310 flow. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:23,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:54:23,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 183 [2023-08-31 01:54:23,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:54:32,878 INFO L130 PetriNetUnfolder]: 15270/24377 cut-off events. [2023-08-31 01:54:32,878 INFO L131 PetriNetUnfolder]: For 1870010/1870010 co-relation queries the response was YES. [2023-08-31 01:54:33,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325670 conditions, 24377 events. 15270/24377 cut-off events. For 1870010/1870010 co-relation queries the response was YES. Maximal size of possible extension queue 1448. Compared 183645 event pairs, 5375 based on Foata normal form. 72/24449 useless extension candidates. Maximal degree in co-relation 325507. Up to 18632 conditions per place. [2023-08-31 01:54:33,610 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 980 selfloop transitions, 131 changer transitions 10/1121 dead transitions. [2023-08-31 01:54:33,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 1121 transitions, 32288 flow [2023-08-31 01:54:33,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 01:54:33,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 01:54:33,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 641 transitions. [2023-08-31 01:54:33,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5003903200624512 [2023-08-31 01:54:33,612 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 641 transitions. [2023-08-31 01:54:33,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 641 transitions. [2023-08-31 01:54:33,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:54:33,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 641 transitions. [2023-08-31 01:54:33,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.57142857142857) internal successors, (641), 7 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:33,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:33,614 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:33,614 INFO L175 Difference]: Start difference. First operand has 375 places, 1071 transitions, 29310 flow. Second operand 7 states and 641 transitions. [2023-08-31 01:54:33,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 1121 transitions, 32288 flow [2023-08-31 01:54:44,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 1121 transitions, 32028 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-31 01:54:44,714 INFO L231 Difference]: Finished difference. Result has 376 places, 1068 transitions, 29233 flow [2023-08-31 01:54:44,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=28946, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1068, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=937, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=29233, PETRI_PLACES=376, PETRI_TRANSITIONS=1068} [2023-08-31 01:54:44,715 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 347 predicate places. [2023-08-31 01:54:44,715 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 1068 transitions, 29233 flow [2023-08-31 01:54:44,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:44,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:54:44,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:54:44,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-31 01:54:44,716 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:54:44,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:54:44,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1617992939, now seen corresponding path program 12 times [2023-08-31 01:54:44,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:54:44,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053839176] [2023-08-31 01:54:44,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:54:44,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:54:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:54:44,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:54:44,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:54:44,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053839176] [2023-08-31 01:54:44,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053839176] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:54:44,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605590690] [2023-08-31 01:54:44,823 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 01:54:44,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:54:44,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:54:44,824 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:54:44,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-31 01:54:44,928 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-31 01:54:44,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:54:44,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-31 01:54:44,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:54:45,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:54:45,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:54:45,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:54:45,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605590690] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:54:45,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:54:45,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2023-08-31 01:54:45,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620050233] [2023-08-31 01:54:45,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:54:45,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-31 01:54:45,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:54:45,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-31 01:54:45,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-08-31 01:54:45,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 183 [2023-08-31 01:54:45,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 1068 transitions, 29233 flow. Second operand has 15 states, 15 states have (on average 80.2) internal successors, (1203), 15 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:45,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:54:45,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 183 [2023-08-31 01:54:45,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:54:55,473 INFO L130 PetriNetUnfolder]: 15275/24341 cut-off events. [2023-08-31 01:54:55,473 INFO L131 PetriNetUnfolder]: For 1860991/1860991 co-relation queries the response was YES. [2023-08-31 01:54:56,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325694 conditions, 24341 events. 15275/24341 cut-off events. For 1860991/1860991 co-relation queries the response was YES. Maximal size of possible extension queue 1446. Compared 182791 event pairs, 5413 based on Foata normal form. 52/24393 useless extension candidates. Maximal degree in co-relation 325530. Up to 18632 conditions per place. [2023-08-31 01:54:56,279 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 1005 selfloop transitions, 149 changer transitions 1/1155 dead transitions. [2023-08-31 01:54:56,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 1155 transitions, 33022 flow [2023-08-31 01:54:56,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 01:54:56,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 01:54:56,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1056 transitions. [2023-08-31 01:54:56,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4808743169398907 [2023-08-31 01:54:56,281 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1056 transitions. [2023-08-31 01:54:56,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1056 transitions. [2023-08-31 01:54:56,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:54:56,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1056 transitions. [2023-08-31 01:54:56,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 88.0) internal successors, (1056), 12 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:56,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:56,284 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:54:56,284 INFO L175 Difference]: Start difference. First operand has 376 places, 1068 transitions, 29233 flow. Second operand 12 states and 1056 transitions. [2023-08-31 01:54:56,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 1155 transitions, 33022 flow [2023-08-31 01:55:07,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 1155 transitions, 32721 flow, removed 29 selfloop flow, removed 3 redundant places. [2023-08-31 01:55:07,272 INFO L231 Difference]: Finished difference. Result has 389 places, 1083 transitions, 29772 flow [2023-08-31 01:55:07,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=28946, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1068, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=925, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=29772, PETRI_PLACES=389, PETRI_TRANSITIONS=1083} [2023-08-31 01:55:07,273 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 360 predicate places. [2023-08-31 01:55:07,273 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 1083 transitions, 29772 flow [2023-08-31 01:55:07,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 80.2) internal successors, (1203), 15 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:07,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:55:07,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:55:07,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-31 01:55:07,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-31 01:55:07,476 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:55:07,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:55:07,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1200749989, now seen corresponding path program 17 times [2023-08-31 01:55:07,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:55:07,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809966156] [2023-08-31 01:55:07,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:55:07,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:55:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:55:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:55:07,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:55:07,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809966156] [2023-08-31 01:55:07,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809966156] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:55:07,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:55:07,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:55:07,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075897488] [2023-08-31 01:55:07,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:55:07,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:55:07,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:55:07,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:55:07,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:55:07,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 183 [2023-08-31 01:55:07,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 1083 transitions, 29772 flow. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:07,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:55:07,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 183 [2023-08-31 01:55:07,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:55:17,191 INFO L130 PetriNetUnfolder]: 15279/24349 cut-off events. [2023-08-31 01:55:17,191 INFO L131 PetriNetUnfolder]: For 2006353/2006353 co-relation queries the response was YES. [2023-08-31 01:55:17,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332701 conditions, 24349 events. 15279/24349 cut-off events. For 2006353/2006353 co-relation queries the response was YES. Maximal size of possible extension queue 1447. Compared 182876 event pairs, 5251 based on Foata normal form. 2/24351 useless extension candidates. Maximal degree in co-relation 332531. Up to 18634 conditions per place. [2023-08-31 01:55:18,032 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 992 selfloop transitions, 168 changer transitions 5/1165 dead transitions. [2023-08-31 01:55:18,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 1165 transitions, 33604 flow [2023-08-31 01:55:18,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:55:18,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:55:18,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 890 transitions. [2023-08-31 01:55:18,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48633879781420764 [2023-08-31 01:55:18,035 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 890 transitions. [2023-08-31 01:55:18,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 890 transitions. [2023-08-31 01:55:18,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:55:18,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 890 transitions. [2023-08-31 01:55:18,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:18,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:18,039 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:18,039 INFO L175 Difference]: Start difference. First operand has 389 places, 1083 transitions, 29772 flow. Second operand 10 states and 890 transitions. [2023-08-31 01:55:18,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 1165 transitions, 33604 flow [2023-08-31 01:55:30,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 1165 transitions, 33274 flow, removed 121 selfloop flow, removed 3 redundant places. [2023-08-31 01:55:30,239 INFO L231 Difference]: Finished difference. Result has 397 places, 1086 transitions, 29904 flow [2023-08-31 01:55:30,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=29456, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1083, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=916, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=29904, PETRI_PLACES=397, PETRI_TRANSITIONS=1086} [2023-08-31 01:55:30,240 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 368 predicate places. [2023-08-31 01:55:30,240 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 1086 transitions, 29904 flow [2023-08-31 01:55:30,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:30,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:55:30,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:55:30,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-31 01:55:30,241 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:55:30,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:55:30,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1004440555, now seen corresponding path program 18 times [2023-08-31 01:55:30,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:55:30,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294964902] [2023-08-31 01:55:30,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:55:30,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:55:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:55:30,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:55:30,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:55:30,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294964902] [2023-08-31 01:55:30,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294964902] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:55:30,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183808140] [2023-08-31 01:55:30,351 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 01:55:30,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:55:30,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:55:30,352 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:55:30,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-31 01:55:30,448 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-31 01:55:30,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:55:30,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-31 01:55:30,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:55:30,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:55:30,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:55:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:55:31,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183808140] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:55:31,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:55:31,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 14 [2023-08-31 01:55:31,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620054872] [2023-08-31 01:55:31,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:55:31,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 01:55:31,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:55:31,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 01:55:31,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-08-31 01:55:31,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 183 [2023-08-31 01:55:31,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 1086 transitions, 29904 flow. Second operand has 14 states, 14 states have (on average 80.57142857142857) internal successors, (1128), 14 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:31,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:55:31,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 183 [2023-08-31 01:55:31,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:55:41,662 INFO L130 PetriNetUnfolder]: 16553/26405 cut-off events. [2023-08-31 01:55:41,662 INFO L131 PetriNetUnfolder]: For 2174373/2174373 co-relation queries the response was YES. [2023-08-31 01:55:42,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362120 conditions, 26405 events. 16553/26405 cut-off events. For 2174373/2174373 co-relation queries the response was YES. Maximal size of possible extension queue 1581. Compared 201336 event pairs, 4782 based on Foata normal form. 37/26442 useless extension candidates. Maximal degree in co-relation 361949. Up to 16703 conditions per place. [2023-08-31 01:55:42,230 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 1060 selfloop transitions, 380 changer transitions 2/1442 dead transitions. [2023-08-31 01:55:42,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 1442 transitions, 40507 flow [2023-08-31 01:55:42,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-31 01:55:42,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-31 01:55:42,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1763 transitions. [2023-08-31 01:55:42,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4816939890710383 [2023-08-31 01:55:42,232 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1763 transitions. [2023-08-31 01:55:42,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1763 transitions. [2023-08-31 01:55:42,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:55:42,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1763 transitions. [2023-08-31 01:55:42,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 88.15) internal successors, (1763), 20 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:42,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 183.0) internal successors, (3843), 21 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:42,238 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 183.0) internal successors, (3843), 21 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:42,238 INFO L175 Difference]: Start difference. First operand has 397 places, 1086 transitions, 29904 flow. Second operand 20 states and 1763 transitions. [2023-08-31 01:55:42,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 1442 transitions, 40507 flow [2023-08-31 01:55:57,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 1442 transitions, 40093 flow, removed 37 selfloop flow, removed 6 redundant places. [2023-08-31 01:55:57,839 INFO L231 Difference]: Finished difference. Result has 422 places, 1210 transitions, 34424 flow [2023-08-31 01:55:57,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=29624, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1086, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=747, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=34424, PETRI_PLACES=422, PETRI_TRANSITIONS=1210} [2023-08-31 01:55:57,840 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 393 predicate places. [2023-08-31 01:55:57,840 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 1210 transitions, 34424 flow [2023-08-31 01:55:57,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 80.57142857142857) internal successors, (1128), 14 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:57,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:55:57,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:55:57,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-31 01:55:58,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:55:58,046 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:55:58,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:55:58,046 INFO L85 PathProgramCache]: Analyzing trace with hash 175235115, now seen corresponding path program 19 times [2023-08-31 01:55:58,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:55:58,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558853397] [2023-08-31 01:55:58,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:55:58,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:55:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:55:58,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:55:58,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:55:58,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558853397] [2023-08-31 01:55:58,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558853397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:55:58,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:55:58,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 01:55:58,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303018308] [2023-08-31 01:55:58,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:55:58,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:55:58,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:55:58,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:55:58,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:55:58,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 183 [2023-08-31 01:55:58,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 1210 transitions, 34424 flow. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:58,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:55:58,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 183 [2023-08-31 01:55:58,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:56:09,356 INFO L130 PetriNetUnfolder]: 16552/26406 cut-off events. [2023-08-31 01:56:09,356 INFO L131 PetriNetUnfolder]: For 2324255/2324255 co-relation queries the response was YES. [2023-08-31 01:56:09,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372798 conditions, 26406 events. 16552/26406 cut-off events. For 2324255/2324255 co-relation queries the response was YES. Maximal size of possible extension queue 1587. Compared 201324 event pairs, 5546 based on Foata normal form. 2/26408 useless extension candidates. Maximal degree in co-relation 372616. Up to 20010 conditions per place. [2023-08-31 01:56:09,874 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 1072 selfloop transitions, 206 changer transitions 5/1283 dead transitions. [2023-08-31 01:56:09,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 1283 transitions, 38330 flow [2023-08-31 01:56:09,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:56:09,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:56:09,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 890 transitions. [2023-08-31 01:56:09,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48633879781420764 [2023-08-31 01:56:09,876 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 890 transitions. [2023-08-31 01:56:09,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 890 transitions. [2023-08-31 01:56:09,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:56:09,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 890 transitions. [2023-08-31 01:56:09,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:56:09,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:56:09,878 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:56:09,878 INFO L175 Difference]: Start difference. First operand has 422 places, 1210 transitions, 34424 flow. Second operand 10 states and 890 transitions. [2023-08-31 01:56:09,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 1283 transitions, 38330 flow [2023-08-31 01:56:23,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 1283 transitions, 37937 flow, removed 154 selfloop flow, removed 2 redundant places. [2023-08-31 01:56:23,295 INFO L231 Difference]: Finished difference. Result has 432 places, 1213 transitions, 34658 flow [2023-08-31 01:56:23,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=34087, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1005, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=34658, PETRI_PLACES=432, PETRI_TRANSITIONS=1213} [2023-08-31 01:56:23,297 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 403 predicate places. [2023-08-31 01:56:23,297 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 1213 transitions, 34658 flow [2023-08-31 01:56:23,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:56:23,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:56:23,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:56:23,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-31 01:56:23,298 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:56:23,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:56:23,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1753631881, now seen corresponding path program 1 times [2023-08-31 01:56:23,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:56:23,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608415381] [2023-08-31 01:56:23,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:56:23,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:56:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:56:23,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:56:23,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:56:23,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608415381] [2023-08-31 01:56:23,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608415381] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:56:23,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928764643] [2023-08-31 01:56:23,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:56:23,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:56:23,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:56:23,425 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:56:23,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-31 01:56:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:56:23,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-31 01:56:23,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:56:23,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:56:23,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:56:23,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:56:23,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928764643] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:56:23,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:56:23,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 13 [2023-08-31 01:56:23,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063007953] [2023-08-31 01:56:23,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:56:23,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:56:23,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:56:23,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:56:23,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:56:23,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 183 [2023-08-31 01:56:23,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 1213 transitions, 34658 flow. Second operand has 7 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:56:23,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:56:23,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 183 [2023-08-31 01:56:23,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15