./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/popl20-more-vector-add.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 f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 14:15:01,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 14:15:01,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 14:15:01,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 14:15:01,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 14:15:01,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 14:15:01,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 14:15:01,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 14:15:01,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 14:15:01,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 14:15:01,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 14:15:01,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 14:15:01,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 14:15:01,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 14:15:01,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 14:15:01,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 14:15:01,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 14:15:01,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 14:15:01,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 14:15:01,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 14:15:01,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 14:15:01,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 14:15:01,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 14:15:01,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 14:15:01,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 14:15:01,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 14:15:01,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 14:15:01,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 14:15:01,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 14:15:01,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 14:15:01,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 14:15:01,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 14:15:01,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 14:15:01,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 14:15:01,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 14:15:01,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 14:15:01,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 14:15:01,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 14:15:01,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 14:15:01,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 14:15:01,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 14:15:01,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 14:15:01,431 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 14:15:01,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 14:15:01,432 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 14:15:01,432 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 14:15:01,433 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 14:15:01,433 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 14:15:01,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 14:15:01,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 14:15:01,434 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 14:15:01,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 14:15:01,435 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 14:15:01,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 14:15:01,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 14:15:01,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 14:15:01,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 14:15:01,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 14:15:01,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 14:15:01,436 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 14:15:01,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 14:15:01,436 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 14:15:01,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 14:15:01,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 14:15:01,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 14:15:01,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 14:15:01,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 14:15:01,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 14:15:01,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 14:15:01,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 14:15:01,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 14:15:01,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 14:15:01,438 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 14:15:01,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 14:15:01,438 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 14:15:01,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 14:15:01,438 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 14:15:01,438 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 14:15:01,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 14:15:01,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 14:15:01,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 14:15:01,688 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 14:15:01,688 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 14:15:01,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c [2023-09-01 14:15:02,679 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 14:15:02,874 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 14:15:02,875 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c [2023-09-01 14:15:02,884 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f46e51f/9f9c7dffadef4e8d8dfad31720bbd94d/FLAG777dbbc16 [2023-09-01 14:15:02,893 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f46e51f/9f9c7dffadef4e8d8dfad31720bbd94d [2023-09-01 14:15:02,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 14:15:02,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 14:15:02,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 14:15:02,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 14:15:02,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 14:15:02,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:15:02" (1/1) ... [2023-09-01 14:15:02,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fdac755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:02, skipping insertion in model container [2023-09-01 14:15:02,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:15:02" (1/1) ... [2023-09-01 14:15:02,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 14:15:02,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 14:15:03,073 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/popl20-more-vector-add.wvr.c[2598,2611] [2023-09-01 14:15:03,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 14:15:03,093 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 14:15:03,113 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/popl20-more-vector-add.wvr.c[2598,2611] [2023-09-01 14:15:03,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 14:15:03,131 INFO L208 MainTranslator]: Completed translation [2023-09-01 14:15:03,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:03 WrapperNode [2023-09-01 14:15:03,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 14:15:03,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 14:15:03,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 14:15:03,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 14:15:03,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:03" (1/1) ... [2023-09-01 14:15:03,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:03" (1/1) ... [2023-09-01 14:15:03,177 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 200 [2023-09-01 14:15:03,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 14:15:03,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 14:15:03,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 14:15:03,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 14:15:03,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:03" (1/1) ... [2023-09-01 14:15:03,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:03" (1/1) ... [2023-09-01 14:15:03,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:03" (1/1) ... [2023-09-01 14:15:03,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:03" (1/1) ... [2023-09-01 14:15:03,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:03" (1/1) ... [2023-09-01 14:15:03,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:03" (1/1) ... [2023-09-01 14:15:03,212 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:03" (1/1) ... [2023-09-01 14:15:03,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:03" (1/1) ... [2023-09-01 14:15:03,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 14:15:03,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 14:15:03,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 14:15:03,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 14:15:03,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:03" (1/1) ... [2023-09-01 14:15:03,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 14:15:03,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:15:03,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 14:15:03,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 14:15:03,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 14:15:03,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 14:15:03,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 14:15:03,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 14:15:03,294 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 14:15:03,294 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 14:15:03,294 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 14:15:03,294 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 14:15:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 14:15:03,295 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 14:15:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 14:15:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 14:15:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 14:15:03,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 14:15:03,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 14:15:03,297 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 14:15:03,375 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 14:15:03,376 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 14:15:03,658 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 14:15:03,666 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 14:15:03,667 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-09-01 14:15:03,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:15:03 BoogieIcfgContainer [2023-09-01 14:15:03,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 14:15:03,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 14:15:03,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 14:15:03,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 14:15:03,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:15:02" (1/3) ... [2023-09-01 14:15:03,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3265d9f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:15:03, skipping insertion in model container [2023-09-01 14:15:03,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:03" (2/3) ... [2023-09-01 14:15:03,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3265d9f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:15:03, skipping insertion in model container [2023-09-01 14:15:03,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:15:03" (3/3) ... [2023-09-01 14:15:03,674 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2023-09-01 14:15:03,680 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 14:15:03,687 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 14:15:03,687 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 14:15:03,687 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 14:15:03,777 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 14:15:03,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 272 transitions, 568 flow [2023-09-01 14:15:03,919 INFO L130 PetriNetUnfolder]: 25/269 cut-off events. [2023-09-01 14:15:03,919 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 14:15:03,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 269 events. 25/269 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 186 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 215. Up to 2 conditions per place. [2023-09-01 14:15:03,924 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 272 transitions, 568 flow [2023-09-01 14:15:03,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 259 transitions, 536 flow [2023-09-01 14:15:03,943 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 14:15:03,955 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 259 transitions, 536 flow [2023-09-01 14:15:03,960 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 259 transitions, 536 flow [2023-09-01 14:15:03,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 259 transitions, 536 flow [2023-09-01 14:15:04,034 INFO L130 PetriNetUnfolder]: 25/259 cut-off events. [2023-09-01 14:15:04,035 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 14:15:04,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 259 events. 25/259 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 184 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 215. Up to 2 conditions per place. [2023-09-01 14:15:04,040 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-09-01 14:15:09,877 INFO L134 LiptonReduction]: Checked pairs total: 4237 [2023-09-01 14:15:09,877 INFO L136 LiptonReduction]: Total number of compositions: 267 [2023-09-01 14:15:09,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 14:15:09,895 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;@6e3a1f6d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 14:15:09,896 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 14:15:09,907 INFO L130 PetriNetUnfolder]: 7/35 cut-off events. [2023-09-01 14:15:09,908 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 14:15:09,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:15:09,910 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, 1, 1, 1] [2023-09-01 14:15:09,910 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)] === [2023-09-01 14:15:09,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:15:09,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1534120368, now seen corresponding path program 1 times [2023-09-01 14:15:09,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:15:09,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166162918] [2023-09-01 14:15:09,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:15:09,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:15:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:15:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:15:10,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:15:10,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166162918] [2023-09-01 14:15:10,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166162918] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:15:10,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:15:10,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 14:15:10,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107030900] [2023-09-01 14:15:10,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:15:10,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 14:15:10,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:15:10,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 14:15:10,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 14:15:10,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 539 [2023-09-01 14:15:10,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 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) [2023-09-01 14:15:10,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:15:10,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 539 [2023-09-01 14:15:10,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:15:10,677 INFO L130 PetriNetUnfolder]: 1632/2322 cut-off events. [2023-09-01 14:15:10,677 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 14:15:10,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4748 conditions, 2322 events. 1632/2322 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10376 event pairs, 885 based on Foata normal form. 2/1550 useless extension candidates. Maximal degree in co-relation 1294. Up to 755 conditions per place. [2023-09-01 14:15:10,685 INFO L137 encePairwiseOnDemand]: 529/539 looper letters, 26 selfloop transitions, 8 changer transitions 56/96 dead transitions. [2023-09-01 14:15:10,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 426 flow [2023-09-01 14:15:10,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 14:15:10,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 14:15:10,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1237 transitions. [2023-09-01 14:15:10,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45899814471243044 [2023-09-01 14:15:10,699 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1237 transitions. [2023-09-01 14:15:10,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1237 transitions. [2023-09-01 14:15:10,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:15:10,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1237 transitions. [2023-09-01 14:15:10,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.4) internal successors, (1237), 5 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:10,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:10,715 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:10,716 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 90 flow. Second operand 5 states and 1237 transitions. [2023-09-01 14:15:10,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 426 flow [2023-09-01 14:15:10,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 96 transitions, 390 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 14:15:10,722 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 130 flow [2023-09-01 14:15:10,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=130, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-09-01 14:15:10,726 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-09-01 14:15:10,726 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 130 flow [2023-09-01 14:15:10,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 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) [2023-09-01 14:15:10,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:15:10,727 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, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:15:10,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 14:15:10,727 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)] === [2023-09-01 14:15:10,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:15:10,728 INFO L85 PathProgramCache]: Analyzing trace with hash -432182153, now seen corresponding path program 1 times [2023-09-01 14:15:10,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:15:10,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438724427] [2023-09-01 14:15:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:15:10,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:15:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:15:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:15:10,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:15:10,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438724427] [2023-09-01 14:15:10,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438724427] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:15:10,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740222777] [2023-09-01 14:15:10,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:15:10,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:15:10,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:15:10,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:15:10,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 14:15:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:15:11,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 14:15:11,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:15:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:15:11,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:15:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:15:11,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740222777] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 14:15:11,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 14:15:11,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-09-01 14:15:11,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948649379] [2023-09-01 14:15:11,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:15:11,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 14:15:11,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:15:11,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 14:15:11,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-09-01 14:15:11,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 539 [2023-09-01 14:15:11,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:11,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:15:11,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 539 [2023-09-01 14:15:11,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:15:11,389 INFO L130 PetriNetUnfolder]: 641/936 cut-off events. [2023-09-01 14:15:11,389 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 14:15:11,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1884 conditions, 936 events. 641/936 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3527 event pairs, 185 based on Foata normal form. 0/680 useless extension candidates. Maximal degree in co-relation 1874. Up to 543 conditions per place. [2023-09-01 14:15:11,394 INFO L137 encePairwiseOnDemand]: 533/539 looper letters, 42 selfloop transitions, 5 changer transitions 0/52 dead transitions. [2023-09-01 14:15:11,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 250 flow [2023-09-01 14:15:11,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 14:15:11,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 14:15:11,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1130 transitions. [2023-09-01 14:15:11,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41929499072356213 [2023-09-01 14:15:11,397 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1130 transitions. [2023-09-01 14:15:11,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1130 transitions. [2023-09-01 14:15:11,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:15:11,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1130 transitions. [2023-09-01 14:15:11,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:11,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:11,404 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:11,404 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 130 flow. Second operand 5 states and 1130 transitions. [2023-09-01 14:15:11,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 250 flow [2023-09-01 14:15:11,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 232 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-09-01 14:15:11,406 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 135 flow [2023-09-01 14:15:11,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2023-09-01 14:15:11,407 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-09-01 14:15:11,407 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 135 flow [2023-09-01 14:15:11,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:11,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:15:11,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:15:11,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 14:15:11,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:15:11,613 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)] === [2023-09-01 14:15:11,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:15:11,614 INFO L85 PathProgramCache]: Analyzing trace with hash 962992084, now seen corresponding path program 1 times [2023-09-01 14:15:11,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:15:11,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554383744] [2023-09-01 14:15:11,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:15:11,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:15:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:15:11,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:15:11,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:15:11,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554383744] [2023-09-01 14:15:11,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554383744] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:15:11,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144225550] [2023-09-01 14:15:11,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:15:11,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:15:11,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:15:11,757 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:15:11,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 14:15:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:15:11,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 14:15:11,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:15:11,951 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:15:11,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:15:12,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:15:12,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144225550] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 14:15:12,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 14:15:12,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-09-01 14:15:12,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15490267] [2023-09-01 14:15:12,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:15:12,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 14:15:12,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:15:12,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 14:15:12,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-09-01 14:15:12,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 539 [2023-09-01 14:15:12,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 135 flow. Second operand has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:12,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:15:12,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 539 [2023-09-01 14:15:12,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:15:12,480 INFO L130 PetriNetUnfolder]: 829/1360 cut-off events. [2023-09-01 14:15:12,480 INFO L131 PetriNetUnfolder]: For 615/759 co-relation queries the response was YES. [2023-09-01 14:15:12,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3074 conditions, 1360 events. 829/1360 cut-off events. For 615/759 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6657 event pairs, 253 based on Foata normal form. 144/1328 useless extension candidates. Maximal degree in co-relation 3027. Up to 547 conditions per place. [2023-09-01 14:15:12,485 INFO L137 encePairwiseOnDemand]: 530/539 looper letters, 88 selfloop transitions, 15 changer transitions 0/107 dead transitions. [2023-09-01 14:15:12,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 107 transitions, 544 flow [2023-09-01 14:15:12,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 14:15:12,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 14:15:12,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1994 transitions. [2023-09-01 14:15:12,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41104926819212534 [2023-09-01 14:15:12,489 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1994 transitions. [2023-09-01 14:15:12,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1994 transitions. [2023-09-01 14:15:12,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:15:12,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1994 transitions. [2023-09-01 14:15:12,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 221.55555555555554) internal successors, (1994), 9 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:12,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 539.0) internal successors, (5390), 10 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:12,499 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 539.0) internal successors, (5390), 10 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:12,499 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 135 flow. Second operand 9 states and 1994 transitions. [2023-09-01 14:15:12,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 107 transitions, 544 flow [2023-09-01 14:15:12,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 107 transitions, 528 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 14:15:12,501 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 213 flow [2023-09-01 14:15:12,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=213, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2023-09-01 14:15:12,502 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2023-09-01 14:15:12,502 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 213 flow [2023-09-01 14:15:12,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:12,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:15:12,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:15:12,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 14:15:12,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-09-01 14:15:12,708 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)] === [2023-09-01 14:15:12,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:15:12,708 INFO L85 PathProgramCache]: Analyzing trace with hash -316438106, now seen corresponding path program 2 times [2023-09-01 14:15:12,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:15:12,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6802215] [2023-09-01 14:15:12,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:15:12,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:15:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:15:12,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:15:12,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:15:12,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6802215] [2023-09-01 14:15:12,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6802215] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:15:12,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943000786] [2023-09-01 14:15:12,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 14:15:12,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:15:12,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:15:12,827 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:15:12,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 14:15:12,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 14:15:12,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:15:12,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 14:15:12,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:15:12,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 14:15:12,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 14:15:12,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943000786] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:15:12,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 14:15:12,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-09-01 14:15:12,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514472532] [2023-09-01 14:15:12,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:15:12,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 14:15:12,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:15:12,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 14:15:12,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-09-01 14:15:13,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 539 [2023-09-01 14:15:13,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:13,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:15:13,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 539 [2023-09-01 14:15:13,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:15:13,301 INFO L130 PetriNetUnfolder]: 1387/2192 cut-off events. [2023-09-01 14:15:13,301 INFO L131 PetriNetUnfolder]: For 2178/2418 co-relation queries the response was YES. [2023-09-01 14:15:13,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6305 conditions, 2192 events. 1387/2192 cut-off events. For 2178/2418 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11091 event pairs, 553 based on Foata normal form. 241/2421 useless extension candidates. Maximal degree in co-relation 6253. Up to 1187 conditions per place. [2023-09-01 14:15:13,310 INFO L137 encePairwiseOnDemand]: 532/539 looper letters, 91 selfloop transitions, 8 changer transitions 11/114 dead transitions. [2023-09-01 14:15:13,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 114 transitions, 681 flow [2023-09-01 14:15:13,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 14:15:13,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 14:15:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1496 transitions. [2023-09-01 14:15:13,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46258503401360546 [2023-09-01 14:15:13,313 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1496 transitions. [2023-09-01 14:15:13,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1496 transitions. [2023-09-01 14:15:13,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:15:13,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1496 transitions. [2023-09-01 14:15:13,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.33333333333334) internal successors, (1496), 6 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:13,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:13,320 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:13,320 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 213 flow. Second operand 6 states and 1496 transitions. [2023-09-01 14:15:13,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 114 transitions, 681 flow [2023-09-01 14:15:13,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 114 transitions, 678 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 14:15:13,327 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 283 flow [2023-09-01 14:15:13,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2023-09-01 14:15:13,327 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 19 predicate places. [2023-09-01 14:15:13,328 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 283 flow [2023-09-01 14:15:13,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:13,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:15:13,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:15:13,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 14:15:13,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:15:13,533 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)] === [2023-09-01 14:15:13,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:15:13,533 INFO L85 PathProgramCache]: Analyzing trace with hash 2030662522, now seen corresponding path program 3 times [2023-09-01 14:15:13,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:15:13,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88277034] [2023-09-01 14:15:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:15:13,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:15:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:15:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:15:13,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:15:13,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88277034] [2023-09-01 14:15:13,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88277034] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:15:13,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887503888] [2023-09-01 14:15:13,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 14:15:13,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:15:13,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:15:13,690 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:15:13,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 14:15:13,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 14:15:13,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:15:13,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 14:15:13,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:15:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 14:15:13,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 14:15:13,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887503888] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:15:13,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 14:15:13,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-09-01 14:15:13,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398169613] [2023-09-01 14:15:13,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:15:13,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 14:15:13,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:15:13,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 14:15:13,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-09-01 14:15:13,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 539 [2023-09-01 14:15:13,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:13,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:15:13,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 539 [2023-09-01 14:15:13,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:15:14,273 INFO L130 PetriNetUnfolder]: 1615/2609 cut-off events. [2023-09-01 14:15:14,274 INFO L131 PetriNetUnfolder]: For 4408/4688 co-relation queries the response was YES. [2023-09-01 14:15:14,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8366 conditions, 2609 events. 1615/2609 cut-off events. For 4408/4688 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14344 event pairs, 589 based on Foata normal form. 281/2852 useless extension candidates. Maximal degree in co-relation 8337. Up to 1151 conditions per place. [2023-09-01 14:15:14,287 INFO L137 encePairwiseOnDemand]: 532/539 looper letters, 87 selfloop transitions, 15 changer transitions 11/117 dead transitions. [2023-09-01 14:15:14,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 117 transitions, 757 flow [2023-09-01 14:15:14,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 14:15:14,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 14:15:14,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1504 transitions. [2023-09-01 14:15:14,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4650587507730365 [2023-09-01 14:15:14,291 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1504 transitions. [2023-09-01 14:15:14,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1504 transitions. [2023-09-01 14:15:14,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:15:14,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1504 transitions. [2023-09-01 14:15:14,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.66666666666666) internal successors, (1504), 6 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:14,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:14,298 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:14,299 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 283 flow. Second operand 6 states and 1504 transitions. [2023-09-01 14:15:14,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 117 transitions, 757 flow [2023-09-01 14:15:14,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 117 transitions, 742 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-09-01 14:15:14,315 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 398 flow [2023-09-01 14:15:14,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=398, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2023-09-01 14:15:14,317 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2023-09-01 14:15:14,318 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 398 flow [2023-09-01 14:15:14,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:14,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:15:14,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:15:14,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 14:15:14,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:15:14,524 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)] === [2023-09-01 14:15:14,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:15:14,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1967518296, now seen corresponding path program 4 times [2023-09-01 14:15:14,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:15:14,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383350471] [2023-09-01 14:15:14,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:15:14,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:15:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:15:14,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:15:14,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:15:14,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383350471] [2023-09-01 14:15:14,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383350471] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:15:14,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678073573] [2023-09-01 14:15:14,716 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 14:15:14,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:15:14,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:15:14,717 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:15:14,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 14:15:14,789 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 14:15:14,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:15:14,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 14:15:14,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:15:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 14:15:14,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:15:14,911 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 14:15:14,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678073573] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:15:14,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:15:14,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2023-09-01 14:15:14,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324100075] [2023-09-01 14:15:14,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:15:14,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 14:15:14,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:15:14,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 14:15:14,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-09-01 14:15:15,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 539 [2023-09-01 14:15:15,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 398 flow. Second operand has 13 states, 13 states have (on average 219.30769230769232) internal successors, (2851), 13 states have internal predecessors, (2851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:15,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:15:15,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 539 [2023-09-01 14:15:15,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:15:16,041 INFO L130 PetriNetUnfolder]: 2205/3638 cut-off events. [2023-09-01 14:15:16,042 INFO L131 PetriNetUnfolder]: For 9088/9088 co-relation queries the response was YES. [2023-09-01 14:15:16,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12406 conditions, 3638 events. 2205/3638 cut-off events. For 9088/9088 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 21084 event pairs, 50 based on Foata normal form. 14/3648 useless extension candidates. Maximal degree in co-relation 12374. Up to 984 conditions per place. [2023-09-01 14:15:16,062 INFO L137 encePairwiseOnDemand]: 521/539 looper letters, 160 selfloop transitions, 99 changer transitions 0/262 dead transitions. [2023-09-01 14:15:16,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 262 transitions, 1958 flow [2023-09-01 14:15:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-09-01 14:15:16,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-09-01 14:15:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4928 transitions. [2023-09-01 14:15:16,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2023-09-01 14:15:16,071 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4928 transitions. [2023-09-01 14:15:16,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4928 transitions. [2023-09-01 14:15:16,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:15:16,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4928 transitions. [2023-09-01 14:15:16,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 224.0) internal successors, (4928), 22 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:16,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 539.0) internal successors, (12397), 23 states have internal predecessors, (12397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:16,096 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 539.0) internal successors, (12397), 23 states have internal predecessors, (12397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:16,096 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 398 flow. Second operand 22 states and 4928 transitions. [2023-09-01 14:15:16,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 262 transitions, 1958 flow [2023-09-01 14:15:16,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 262 transitions, 1912 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-09-01 14:15:16,124 INFO L231 Difference]: Finished difference. Result has 98 places, 141 transitions, 1316 flow [2023-09-01 14:15:16,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1316, PETRI_PLACES=98, PETRI_TRANSITIONS=141} [2023-09-01 14:15:16,126 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 59 predicate places. [2023-09-01 14:15:16,126 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 141 transitions, 1316 flow [2023-09-01 14:15:16,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 219.30769230769232) internal successors, (2851), 13 states have internal predecessors, (2851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:16,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:15:16,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:15:16,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 14:15:16,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:15:16,347 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)] === [2023-09-01 14:15:16,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:15:16,347 INFO L85 PathProgramCache]: Analyzing trace with hash 902285986, now seen corresponding path program 5 times [2023-09-01 14:15:16,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:15:16,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296823120] [2023-09-01 14:15:16,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:15:16,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:15:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:15:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 14:15:16,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:15:16,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296823120] [2023-09-01 14:15:16,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296823120] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:15:16,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823006716] [2023-09-01 14:15:16,482 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 14:15:16,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:15:16,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:15:16,498 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:15:16,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 14:15:16,593 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 14:15:16,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:15:16,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 14:15:16,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:15:16,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 14:15:16,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:15:16,710 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 14:15:16,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823006716] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:15:16,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:15:16,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2023-09-01 14:15:16,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832132438] [2023-09-01 14:15:16,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:15:16,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 14:15:16,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:15:16,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 14:15:16,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-09-01 14:15:17,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 539 [2023-09-01 14:15:17,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 141 transitions, 1316 flow. Second operand has 16 states, 16 states have (on average 218.9375) internal successors, (3503), 16 states have internal predecessors, (3503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:17,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:15:17,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 539 [2023-09-01 14:15:17,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:15:18,243 INFO L130 PetriNetUnfolder]: 3564/5780 cut-off events. [2023-09-01 14:15:18,243 INFO L131 PetriNetUnfolder]: For 31905/31905 co-relation queries the response was YES. [2023-09-01 14:15:18,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25650 conditions, 5780 events. 3564/5780 cut-off events. For 31905/31905 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 35720 event pairs, 326 based on Foata normal form. 22/5800 useless extension candidates. Maximal degree in co-relation 25566. Up to 1335 conditions per place. [2023-09-01 14:15:18,276 INFO L137 encePairwiseOnDemand]: 521/539 looper letters, 248 selfloop transitions, 167 changer transitions 0/418 dead transitions. [2023-09-01 14:15:18,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 418 transitions, 4189 flow [2023-09-01 14:15:18,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 14:15:18,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 14:15:18,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4304 transitions. [2023-09-01 14:15:18,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42027145786544284 [2023-09-01 14:15:18,284 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4304 transitions. [2023-09-01 14:15:18,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4304 transitions. [2023-09-01 14:15:18,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:15:18,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4304 transitions. [2023-09-01 14:15:18,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 226.52631578947367) internal successors, (4304), 19 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:18,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 539.0) internal successors, (10780), 20 states have internal predecessors, (10780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:18,300 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 539.0) internal successors, (10780), 20 states have internal predecessors, (10780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:18,300 INFO L175 Difference]: Start difference. First operand has 98 places, 141 transitions, 1316 flow. Second operand 19 states and 4304 transitions. [2023-09-01 14:15:18,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 418 transitions, 4189 flow [2023-09-01 14:15:18,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 418 transitions, 4052 flow, removed 63 selfloop flow, removed 3 redundant places. [2023-09-01 14:15:18,473 INFO L231 Difference]: Finished difference. Result has 125 places, 247 transitions, 2987 flow [2023-09-01 14:15:18,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2987, PETRI_PLACES=125, PETRI_TRANSITIONS=247} [2023-09-01 14:15:18,474 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 86 predicate places. [2023-09-01 14:15:18,474 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 247 transitions, 2987 flow [2023-09-01 14:15:18,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 218.9375) internal successors, (3503), 16 states have internal predecessors, (3503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:18,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:15:18,475 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:15:18,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 14:15:18,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:15:18,679 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)] === [2023-09-01 14:15:18,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:15:18,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1514077468, now seen corresponding path program 6 times [2023-09-01 14:15:18,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:15:18,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365587591] [2023-09-01 14:15:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:15:18,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:15:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:15:18,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 14:15:18,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:15:18,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365587591] [2023-09-01 14:15:18,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365587591] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:15:18,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282451312] [2023-09-01 14:15:18,800 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 14:15:18,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:15:18,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:15:18,813 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:15:18,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 14:15:18,931 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 14:15:18,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:15:18,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 14:15:18,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:15:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 14:15:18,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 14:15:18,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282451312] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:15:18,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 14:15:18,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-09-01 14:15:18,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399154756] [2023-09-01 14:15:18,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:15:18,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 14:15:18,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:15:18,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 14:15:18,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-09-01 14:15:19,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 539 [2023-09-01 14:15:19,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 247 transitions, 2987 flow. Second operand has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:19,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:15:19,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 539 [2023-09-01 14:15:19,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:15:19,929 INFO L130 PetriNetUnfolder]: 3494/5578 cut-off events. [2023-09-01 14:15:19,929 INFO L131 PetriNetUnfolder]: For 52534/52636 co-relation queries the response was YES. [2023-09-01 14:15:19,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29719 conditions, 5578 events. 3494/5578 cut-off events. For 52534/52636 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 33724 event pairs, 878 based on Foata normal form. 98/5665 useless extension candidates. Maximal degree in co-relation 29617. Up to 2634 conditions per place. [2023-09-01 14:15:19,985 INFO L137 encePairwiseOnDemand]: 532/539 looper letters, 196 selfloop transitions, 67 changer transitions 13/307 dead transitions. [2023-09-01 14:15:19,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 307 transitions, 3981 flow [2023-09-01 14:15:19,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 14:15:19,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 14:15:19,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1498 transitions. [2023-09-01 14:15:19,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2023-09-01 14:15:19,991 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1498 transitions. [2023-09-01 14:15:19,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1498 transitions. [2023-09-01 14:15:19,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:15:19,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1498 transitions. [2023-09-01 14:15:19,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.66666666666666) internal successors, (1498), 6 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:19,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:19,997 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:19,997 INFO L175 Difference]: Start difference. First operand has 125 places, 247 transitions, 2987 flow. Second operand 6 states and 1498 transitions. [2023-09-01 14:15:19,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 307 transitions, 3981 flow [2023-09-01 14:15:20,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 307 transitions, 3791 flow, removed 62 selfloop flow, removed 4 redundant places. [2023-09-01 14:15:20,227 INFO L231 Difference]: Finished difference. Result has 129 places, 251 transitions, 3091 flow [2023-09-01 14:15:20,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=2848, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3091, PETRI_PLACES=129, PETRI_TRANSITIONS=251} [2023-09-01 14:15:20,227 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 90 predicate places. [2023-09-01 14:15:20,228 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 251 transitions, 3091 flow [2023-09-01 14:15:20,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:15:20,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:15:20,228 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:15:20,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-09-01 14:15:20,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:15:20,433 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)] === [2023-09-01 14:15:20,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:15:20,434 INFO L85 PathProgramCache]: Analyzing trace with hash 205007497, now seen corresponding path program 1 times [2023-09-01 14:15:20,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:15:20,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956018704] [2023-09-01 14:15:20,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:15:20,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:15:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:15:23,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 14:15:23,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:15:23,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956018704] [2023-09-01 14:15:23,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956018704] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:15:23,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018150692] [2023-09-01 14:15:23,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:15:23,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:15:23,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:15:23,317 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:15:23,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 14:15:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:15:23,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 79 conjunts are in the unsatisfiable core [2023-09-01 14:15:23,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:15:23,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:15:23,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:15:23,500 INFO L321 Elim1Store]: treesize reduction 49, result has 33.8 percent of original size [2023-09-01 14:15:23,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 35 [2023-09-01 14:15:23,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:15:23,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:15:23,627 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-09-01 14:15:23,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2023-09-01 14:15:23,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:15:23,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:15:23,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:15:23,784 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-09-01 14:15:23,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2023-09-01 14:15:23,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:15:23,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:15:23,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:15:23,937 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-09-01 14:15:23,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 32 [2023-09-01 14:15:24,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2023-09-01 14:15:24,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:15:24,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:15:24,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:15:24,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2023-09-01 14:15:24,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:15:24,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:15:24,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:15:24,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2023-09-01 14:15:25,317 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 14:15:25,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 44 [2023-09-01 14:15:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:15:25,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:15:54,801 INFO L321 Elim1Store]: treesize reduction 42, result has 62.5 percent of original size [2023-09-01 14:15:54,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 330 treesize of output 190 [2023-09-01 14:15:55,654 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:15:55,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 233057 treesize of output 224681 [2023-09-01 14:15:59,335 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:15:59,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36342 treesize of output 31718 [2023-09-01 14:16:02,346 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:16:02,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41654 treesize of output 31942 [2023-09-01 14:16:07,515 WARN L222 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 1044 DAG size of output: 1035 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-09-01 14:16:15,484 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:16:15,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 10427 treesize of output 9751 [2023-09-01 14:17:51,160 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:20:32,364 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:23:37,033 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:26:37,170 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-09-01 14:27:58,613 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. Killed by 15