./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.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 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 03:40:53,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 03:40:53,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 03:40:53,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 03:40:53,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 03:40:53,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 03:40:53,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 03:40:53,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 03:40:53,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 03:40:53,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 03:40:53,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 03:40:53,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 03:40:53,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 03:40:53,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 03:40:53,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 03:40:53,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 03:40:53,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 03:40:53,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 03:40:53,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 03:40:53,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 03:40:53,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 03:40:53,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 03:40:53,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 03:40:53,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 03:40:53,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 03:40:53,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 03:40:53,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 03:40:53,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 03:40:53,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 03:40:53,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 03:40:53,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 03:40:53,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 03:40:53,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 03:40:53,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 03:40:53,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 03:40:53,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 03:40:53,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 03:40:53,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 03:40:53,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 03:40:53,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 03:40:53,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 03:40:53,923 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 03:40:53,944 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 03:40:53,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 03:40:53,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 03:40:53,945 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 03:40:53,945 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 03:40:53,946 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 03:40:53,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 03:40:53,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 03:40:53,947 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 03:40:53,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 03:40:53,947 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 03:40:53,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 03:40:53,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 03:40:53,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 03:40:53,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 03:40:53,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 03:40:53,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 03:40:53,949 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 03:40:53,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 03:40:53,950 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 03:40:53,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 03:40:53,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 03:40:53,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 03:40:53,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 03:40:53,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 03:40:53,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 03:40:53,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 03:40:53,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 03:40:53,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 03:40:53,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 03:40:53,953 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 03:40:53,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 03:40:53,954 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 03:40:53,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 03:40:53,954 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 03:40:53,954 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 03:40:54,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 03:40:54,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 03:40:54,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 03:40:54,281 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 03:40:54,281 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 03:40:54,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2023-08-31 03:40:55,499 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 03:40:55,695 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 03:40:55,696 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2023-08-31 03:40:55,708 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f23764c2d/0fbc655ca8254bfe8bddb809725b4e3b/FLAG84b280de0 [2023-08-31 03:40:56,058 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f23764c2d/0fbc655ca8254bfe8bddb809725b4e3b [2023-08-31 03:40:56,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 03:40:56,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 03:40:56,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 03:40:56,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 03:40:56,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 03:40:56,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 03:40:56" (1/1) ... [2023-08-31 03:40:56,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c67eaa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:40:56, skipping insertion in model container [2023-08-31 03:40:56,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 03:40:56" (1/1) ... [2023-08-31 03:40:56,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 03:40:56,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 03:40:56,320 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-queue-add-3.wvr.c[3412,3425] [2023-08-31 03:40:56,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 03:40:56,351 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 03:40:56,391 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-queue-add-3.wvr.c[3412,3425] [2023-08-31 03:40:56,399 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 03:40:56,412 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 03:40:56,414 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 03:40:56,420 INFO L208 MainTranslator]: Completed translation [2023-08-31 03:40:56,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:40:56 WrapperNode [2023-08-31 03:40:56,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 03:40:56,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 03:40:56,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 03:40:56,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 03:40:56,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:40:56" (1/1) ... [2023-08-31 03:40:56,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:40:56" (1/1) ... [2023-08-31 03:40:56,487 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 252 [2023-08-31 03:40:56,488 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 03:40:56,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 03:40:56,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 03:40:56,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 03:40:56,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:40:56" (1/1) ... [2023-08-31 03:40:56,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:40:56" (1/1) ... [2023-08-31 03:40:56,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:40:56" (1/1) ... [2023-08-31 03:40:56,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:40:56" (1/1) ... [2023-08-31 03:40:56,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:40:56" (1/1) ... [2023-08-31 03:40:56,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:40:56" (1/1) ... [2023-08-31 03:40:56,542 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:40:56" (1/1) ... [2023-08-31 03:40:56,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:40:56" (1/1) ... [2023-08-31 03:40:56,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 03:40:56,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 03:40:56,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 03:40:56,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 03:40:56,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:40:56" (1/1) ... [2023-08-31 03:40:56,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 03:40:56,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:40:56,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 03:40:56,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 03:40:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 03:40:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 03:40:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 03:40:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 03:40:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 03:40:56,624 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 03:40:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 03:40:56,624 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 03:40:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 03:40:56,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 03:40:56,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 03:40:56,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 03:40:56,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 03:40:56,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 03:40:56,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 03:40:56,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 03:40:56,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 03:40:56,627 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 03:40:56,790 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 03:40:56,802 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 03:40:57,157 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 03:40:57,303 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 03:40:57,303 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-31 03:40:57,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 03:40:57 BoogieIcfgContainer [2023-08-31 03:40:57,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 03:40:57,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 03:40:57,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 03:40:57,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 03:40:57,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 03:40:56" (1/3) ... [2023-08-31 03:40:57,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e43cab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 03:40:57, skipping insertion in model container [2023-08-31 03:40:57,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:40:56" (2/3) ... [2023-08-31 03:40:57,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e43cab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 03:40:57, skipping insertion in model container [2023-08-31 03:40:57,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 03:40:57" (3/3) ... [2023-08-31 03:40:57,313 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2023-08-31 03:40:57,321 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 03:40:57,328 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 03:40:57,328 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 03:40:57,328 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 03:40:57,395 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 03:40:57,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 201 transitions, 426 flow [2023-08-31 03:40:57,540 INFO L130 PetriNetUnfolder]: 18/198 cut-off events. [2023-08-31 03:40:57,541 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 03:40:57,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 198 events. 18/198 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 116 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2023-08-31 03:40:57,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 201 transitions, 426 flow [2023-08-31 03:40:57,559 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 188 transitions, 394 flow [2023-08-31 03:40:57,562 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 03:40:57,569 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 188 transitions, 394 flow [2023-08-31 03:40:57,571 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 188 transitions, 394 flow [2023-08-31 03:40:57,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 188 transitions, 394 flow [2023-08-31 03:40:57,605 INFO L130 PetriNetUnfolder]: 18/188 cut-off events. [2023-08-31 03:40:57,605 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 03:40:57,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 188 events. 18/188 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 115 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2023-08-31 03:40:57,607 INFO L119 LiptonReduction]: Number of co-enabled transitions 1456 [2023-08-31 03:41:03,968 INFO L134 LiptonReduction]: Checked pairs total: 2338 [2023-08-31 03:41:03,969 INFO L136 LiptonReduction]: Total number of compositions: 198 [2023-08-31 03:41:03,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 03:41:03,987 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;@5cd349f6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 03:41:03,988 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 03:41:03,994 INFO L130 PetriNetUnfolder]: 6/27 cut-off events. [2023-08-31 03:41:03,994 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 03:41:03,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:41:03,995 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] [2023-08-31 03:41:03,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:41:04,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:41:04,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1992179177, now seen corresponding path program 1 times [2023-08-31 03:41:04,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:41:04,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053255012] [2023-08-31 03:41:04,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:41:04,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:41:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:41:04,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:41:04,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:41:04,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053255012] [2023-08-31 03:41:04,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053255012] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:41:04,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 03:41:04,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 03:41:04,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618746523] [2023-08-31 03:41:04,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:41:04,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 03:41:04,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:41:04,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 03:41:04,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 03:41:04,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 399 [2023-08-31 03:41:04,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:04,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:41:04,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 399 [2023-08-31 03:41:04,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:41:04,439 INFO L130 PetriNetUnfolder]: 324/461 cut-off events. [2023-08-31 03:41:04,439 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-08-31 03:41:04,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 461 events. 324/461 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1468 event pairs, 167 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 739. Up to 453 conditions per place. [2023-08-31 03:41:04,448 INFO L137 encePairwiseOnDemand]: 398/399 looper letters, 24 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2023-08-31 03:41:04,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 120 flow [2023-08-31 03:41:04,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 03:41:04,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 03:41:04,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 377 transitions. [2023-08-31 03:41:04,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4724310776942356 [2023-08-31 03:41:04,464 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 377 transitions. [2023-08-31 03:41:04,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 377 transitions. [2023-08-31 03:41:04,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:41:04,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 377 transitions. [2023-08-31 03:41:04,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 188.5) internal successors, (377), 2 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:04,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 399.0) internal successors, (1197), 3 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:04,480 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 399.0) internal successors, (1197), 3 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:04,482 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 74 flow. Second operand 2 states and 377 transitions. [2023-08-31 03:41:04,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 120 flow [2023-08-31 03:41:04,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 108 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 03:41:04,489 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 60 flow [2023-08-31 03:41:04,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-08-31 03:41:04,494 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -5 predicate places. [2023-08-31 03:41:04,496 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 60 flow [2023-08-31 03:41:04,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:04,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:41:04,498 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] [2023-08-31 03:41:04,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 03:41:04,499 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:41:04,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:41:04,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1504763739, now seen corresponding path program 1 times [2023-08-31 03:41:04,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:41:04,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840708323] [2023-08-31 03:41:04,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:41:04,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:41:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:41:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:41:04,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:41:04,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840708323] [2023-08-31 03:41:04,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840708323] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:41:04,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 03:41:04,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 03:41:04,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522427778] [2023-08-31 03:41:04,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:41:04,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 03:41:04,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:41:04,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 03:41:04,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 03:41:04,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 399 [2023-08-31 03:41:04,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:04,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:41:04,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 399 [2023-08-31 03:41:04,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:41:05,083 INFO L130 PetriNetUnfolder]: 330/496 cut-off events. [2023-08-31 03:41:05,085 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 03:41:05,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 496 events. 330/496 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1625 event pairs, 168 based on Foata normal form. 30/364 useless extension candidates. Maximal degree in co-relation 998. Up to 449 conditions per place. [2023-08-31 03:41:05,088 INFO L137 encePairwiseOnDemand]: 392/399 looper letters, 23 selfloop transitions, 2 changer transitions 21/49 dead transitions. [2023-08-31 03:41:05,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 49 transitions, 202 flow [2023-08-31 03:41:05,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 03:41:05,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 03:41:05,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 882 transitions. [2023-08-31 03:41:05,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2023-08-31 03:41:05,095 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 882 transitions. [2023-08-31 03:41:05,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 882 transitions. [2023-08-31 03:41:05,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:41:05,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 882 transitions. [2023-08-31 03:41:05,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.4) internal successors, (882), 5 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:05,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 399.0) internal successors, (2394), 6 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:05,107 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 399.0) internal successors, (2394), 6 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:05,107 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 60 flow. Second operand 5 states and 882 transitions. [2023-08-31 03:41:05,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 49 transitions, 202 flow [2023-08-31 03:41:05,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 49 transitions, 202 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 03:41:05,109 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 86 flow [2023-08-31 03:41:05,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=86, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-08-31 03:41:05,110 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-08-31 03:41:05,110 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 86 flow [2023-08-31 03:41:05,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:05,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:41:05,111 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] [2023-08-31 03:41:05,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 03:41:05,112 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:41:05,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:41:05,113 INFO L85 PathProgramCache]: Analyzing trace with hash 980333088, now seen corresponding path program 1 times [2023-08-31 03:41:05,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:41:05,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052643744] [2023-08-31 03:41:05,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:41:05,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:41:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:41:05,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:41:05,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:41:05,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052643744] [2023-08-31 03:41:05,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052643744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:41:05,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 03:41:05,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 03:41:05,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237871624] [2023-08-31 03:41:05,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:41:05,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 03:41:05,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:41:05,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 03:41:05,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 03:41:05,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 399 [2023-08-31 03:41:05,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:05,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:41:05,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 399 [2023-08-31 03:41:05,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:41:05,500 INFO L130 PetriNetUnfolder]: 368/550 cut-off events. [2023-08-31 03:41:05,500 INFO L131 PetriNetUnfolder]: For 406/406 co-relation queries the response was YES. [2023-08-31 03:41:05,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1577 conditions, 550 events. 368/550 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1953 event pairs, 194 based on Foata normal form. 24/401 useless extension candidates. Maximal degree in co-relation 1570. Up to 450 conditions per place. [2023-08-31 03:41:05,504 INFO L137 encePairwiseOnDemand]: 392/399 looper letters, 24 selfloop transitions, 2 changer transitions 12/41 dead transitions. [2023-08-31 03:41:05,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 206 flow [2023-08-31 03:41:05,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 03:41:05,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 03:41:05,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 705 transitions. [2023-08-31 03:41:05,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417293233082707 [2023-08-31 03:41:05,507 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 705 transitions. [2023-08-31 03:41:05,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 705 transitions. [2023-08-31 03:41:05,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:41:05,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 705 transitions. [2023-08-31 03:41:05,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:05,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 399.0) internal successors, (1995), 5 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:05,513 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 399.0) internal successors, (1995), 5 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:05,513 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 86 flow. Second operand 4 states and 705 transitions. [2023-08-31 03:41:05,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 206 flow [2023-08-31 03:41:05,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 186 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-31 03:41:05,516 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 94 flow [2023-08-31 03:41:05,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-31 03:41:05,518 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-08-31 03:41:05,520 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 94 flow [2023-08-31 03:41:05,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:05,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:41:05,521 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] [2023-08-31 03:41:05,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 03:41:05,522 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:41:05,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:41:05,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1036368596, now seen corresponding path program 1 times [2023-08-31 03:41:05,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:41:05,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718201629] [2023-08-31 03:41:05,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:41:05,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:41:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:41:05,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:41:05,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:41:05,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718201629] [2023-08-31 03:41:05,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718201629] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:41:05,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 03:41:05,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 03:41:05,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858180674] [2023-08-31 03:41:05,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:41:05,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 03:41:05,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:41:05,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 03:41:05,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 03:41:05,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 399 [2023-08-31 03:41:05,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:05,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:41:05,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 399 [2023-08-31 03:41:05,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:41:05,825 INFO L130 PetriNetUnfolder]: 340/485 cut-off events. [2023-08-31 03:41:05,825 INFO L131 PetriNetUnfolder]: For 138/138 co-relation queries the response was YES. [2023-08-31 03:41:05,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 485 events. 340/485 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1440 event pairs, 48 based on Foata normal form. 10/328 useless extension candidates. Maximal degree in co-relation 1358. Up to 390 conditions per place. [2023-08-31 03:41:05,828 INFO L137 encePairwiseOnDemand]: 394/399 looper letters, 33 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-08-31 03:41:05,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 198 flow [2023-08-31 03:41:05,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 03:41:05,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 03:41:05,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 552 transitions. [2023-08-31 03:41:05,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46115288220551376 [2023-08-31 03:41:05,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 552 transitions. [2023-08-31 03:41:05,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 552 transitions. [2023-08-31 03:41:05,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:41:05,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 552 transitions. [2023-08-31 03:41:05,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:05,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:05,841 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:05,841 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 94 flow. Second operand 3 states and 552 transitions. [2023-08-31 03:41:05,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 198 flow [2023-08-31 03:41:05,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 39 transitions, 194 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 03:41:05,843 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 115 flow [2023-08-31 03:41:05,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-31 03:41:05,845 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2023-08-31 03:41:05,845 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 115 flow [2023-08-31 03:41:05,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:05,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:41:05,846 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] [2023-08-31 03:41:05,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 03:41:05,846 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:41:05,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:41:05,847 INFO L85 PathProgramCache]: Analyzing trace with hash -128823418, now seen corresponding path program 2 times [2023-08-31 03:41:05,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:41:05,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836637291] [2023-08-31 03:41:05,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:41:05,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:41:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:41:06,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:41:06,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:41:06,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836637291] [2023-08-31 03:41:06,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836637291] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:41:06,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 03:41:06,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 03:41:06,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683219417] [2023-08-31 03:41:06,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:41:06,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 03:41:06,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:41:06,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 03:41:06,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-31 03:41:06,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 399 [2023-08-31 03:41:06,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 172.66666666666666) internal successors, (1036), 6 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:06,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:41:06,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 399 [2023-08-31 03:41:06,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:41:06,571 INFO L130 PetriNetUnfolder]: 499/749 cut-off events. [2023-08-31 03:41:06,571 INFO L131 PetriNetUnfolder]: For 344/344 co-relation queries the response was YES. [2023-08-31 03:41:06,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2399 conditions, 749 events. 499/749 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2727 event pairs, 123 based on Foata normal form. 1/529 useless extension candidates. Maximal degree in co-relation 2390. Up to 302 conditions per place. [2023-08-31 03:41:06,576 INFO L137 encePairwiseOnDemand]: 392/399 looper letters, 65 selfloop transitions, 8 changer transitions 2/77 dead transitions. [2023-08-31 03:41:06,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 77 transitions, 449 flow [2023-08-31 03:41:06,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 03:41:06,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 03:41:06,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1082 transitions. [2023-08-31 03:41:06,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519632414369256 [2023-08-31 03:41:06,580 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1082 transitions. [2023-08-31 03:41:06,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1082 transitions. [2023-08-31 03:41:06,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:41:06,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1082 transitions. [2023-08-31 03:41:06,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:06,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:06,589 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:06,589 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 115 flow. Second operand 6 states and 1082 transitions. [2023-08-31 03:41:06,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 77 transitions, 449 flow [2023-08-31 03:41:06,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 77 transitions, 398 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-08-31 03:41:06,592 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 158 flow [2023-08-31 03:41:06,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-08-31 03:41:06,593 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2023-08-31 03:41:06,593 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 158 flow [2023-08-31 03:41:06,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 172.66666666666666) internal successors, (1036), 6 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:06,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:41:06,594 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] [2023-08-31 03:41:06,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 03:41:06,595 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:41:06,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:41:06,595 INFO L85 PathProgramCache]: Analyzing trace with hash -712620679, now seen corresponding path program 1 times [2023-08-31 03:41:06,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:41:06,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870009760] [2023-08-31 03:41:06,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:41:06,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:41:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:41:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:41:06,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:41:06,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870009760] [2023-08-31 03:41:06,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870009760] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:41:06,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109940777] [2023-08-31 03:41:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:41:06,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:41:06,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:41:06,733 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:41:06,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 03:41:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:41:06,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-31 03:41:06,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:41:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:41:07,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:41:07,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:41:07,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109940777] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:41:07,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:41:07,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-31 03:41:07,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284009513] [2023-08-31 03:41:07,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:41:07,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 03:41:07,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:41:07,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 03:41:07,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-08-31 03:41:07,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 399 [2023-08-31 03:41:07,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 158 flow. Second operand has 12 states, 12 states have (on average 163.16666666666666) internal successors, (1958), 12 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:07,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:41:07,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 399 [2023-08-31 03:41:07,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:41:07,543 INFO L130 PetriNetUnfolder]: 681/1073 cut-off events. [2023-08-31 03:41:07,544 INFO L131 PetriNetUnfolder]: For 1230/1283 co-relation queries the response was YES. [2023-08-31 03:41:07,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3388 conditions, 1073 events. 681/1073 cut-off events. For 1230/1283 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4573 event pairs, 291 based on Foata normal form. 137/1047 useless extension candidates. Maximal degree in co-relation 3377. Up to 645 conditions per place. [2023-08-31 03:41:07,551 INFO L137 encePairwiseOnDemand]: 393/399 looper letters, 59 selfloop transitions, 5 changer transitions 4/72 dead transitions. [2023-08-31 03:41:07,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 432 flow [2023-08-31 03:41:07,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 03:41:07,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 03:41:07,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1016 transitions. [2023-08-31 03:41:07,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243943191311612 [2023-08-31 03:41:07,555 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1016 transitions. [2023-08-31 03:41:07,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1016 transitions. [2023-08-31 03:41:07,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:41:07,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1016 transitions. [2023-08-31 03:41:07,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:07,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:07,564 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:07,565 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 158 flow. Second operand 6 states and 1016 transitions. [2023-08-31 03:41:07,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 432 flow [2023-08-31 03:41:07,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 72 transitions, 425 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-31 03:41:07,568 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 206 flow [2023-08-31 03:41:07,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=206, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-08-31 03:41:07,571 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 17 predicate places. [2023-08-31 03:41:07,571 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 206 flow [2023-08-31 03:41:07,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 163.16666666666666) internal successors, (1958), 12 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:07,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:41:07,572 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] [2023-08-31 03:41:07,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 03:41:07,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-31 03:41:07,779 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:41:07,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:41:07,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1630668423, now seen corresponding path program 1 times [2023-08-31 03:41:07,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:41:07,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142092754] [2023-08-31 03:41:07,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:41:07,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:41:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:41:07,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:41:07,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:41:07,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142092754] [2023-08-31 03:41:07,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142092754] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:41:07,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 03:41:07,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 03:41:07,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460506089] [2023-08-31 03:41:07,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:41:07,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 03:41:07,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:41:07,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 03:41:07,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 03:41:07,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 399 [2023-08-31 03:41:07,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:07,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:41:07,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 399 [2023-08-31 03:41:07,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:41:08,277 INFO L130 PetriNetUnfolder]: 1125/1814 cut-off events. [2023-08-31 03:41:08,277 INFO L131 PetriNetUnfolder]: For 2644/2698 co-relation queries the response was YES. [2023-08-31 03:41:08,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6235 conditions, 1814 events. 1125/1814 cut-off events. For 2644/2698 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9050 event pairs, 206 based on Foata normal form. 134/1655 useless extension candidates. Maximal degree in co-relation 6220. Up to 793 conditions per place. [2023-08-31 03:41:08,288 INFO L137 encePairwiseOnDemand]: 394/399 looper letters, 61 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2023-08-31 03:41:08,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 77 transitions, 535 flow [2023-08-31 03:41:08,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 03:41:08,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 03:41:08,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 744 transitions. [2023-08-31 03:41:08,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46616541353383456 [2023-08-31 03:41:08,291 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 744 transitions. [2023-08-31 03:41:08,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 744 transitions. [2023-08-31 03:41:08,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:41:08,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 744 transitions. [2023-08-31 03:41:08,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:08,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 399.0) internal successors, (1995), 5 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:08,296 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 399.0) internal successors, (1995), 5 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:08,296 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 206 flow. Second operand 4 states and 744 transitions. [2023-08-31 03:41:08,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 77 transitions, 535 flow [2023-08-31 03:41:08,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 511 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-31 03:41:08,303 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 300 flow [2023-08-31 03:41:08,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=300, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-08-31 03:41:08,303 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2023-08-31 03:41:08,303 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 300 flow [2023-08-31 03:41:08,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:08,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:41:08,304 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:41:08,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 03:41:08,304 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:41:08,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:41:08,305 INFO L85 PathProgramCache]: Analyzing trace with hash 883003992, now seen corresponding path program 2 times [2023-08-31 03:41:08,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:41:08,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721065268] [2023-08-31 03:41:08,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:41:08,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:41:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:41:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:41:09,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:41:09,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721065268] [2023-08-31 03:41:09,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721065268] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:41:09,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915694303] [2023-08-31 03:41:09,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 03:41:09,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:41:09,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:41:09,053 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:41:09,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 03:41:09,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:41:09,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:41:09,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-31 03:41:09,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:41:09,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:41:09,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-31 03:41:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:41:09,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:41:09,464 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_255 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_255) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 0))) is different from false [2023-08-31 03:41:09,491 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:41:09,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 45 treesize of output 37 [2023-08-31 03:41:09,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-08-31 03:41:09,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:41:09,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915694303] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:41:09,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:41:09,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 19 [2023-08-31 03:41:09,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767119134] [2023-08-31 03:41:09,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:41:09,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-31 03:41:09,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:41:09,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-31 03:41:09,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=296, Unknown=1, NotChecked=34, Total=380 [2023-08-31 03:41:09,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 399 [2023-08-31 03:41:09,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 300 flow. Second operand has 20 states, 20 states have (on average 127.8) internal successors, (2556), 20 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:09,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:41:09,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 399 [2023-08-31 03:41:09,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:41:10,385 INFO L130 PetriNetUnfolder]: 1143/1887 cut-off events. [2023-08-31 03:41:10,385 INFO L131 PetriNetUnfolder]: For 2931/2956 co-relation queries the response was YES. [2023-08-31 03:41:10,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7535 conditions, 1887 events. 1143/1887 cut-off events. For 2931/2956 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9079 event pairs, 160 based on Foata normal form. 33/1622 useless extension candidates. Maximal degree in co-relation 7518. Up to 1129 conditions per place. [2023-08-31 03:41:10,398 INFO L137 encePairwiseOnDemand]: 390/399 looper letters, 101 selfloop transitions, 23 changer transitions 0/126 dead transitions. [2023-08-31 03:41:10,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 126 transitions, 913 flow [2023-08-31 03:41:10,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 03:41:10,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 03:41:10,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1732 transitions. [2023-08-31 03:41:10,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33391170233275497 [2023-08-31 03:41:10,404 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1732 transitions. [2023-08-31 03:41:10,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1732 transitions. [2023-08-31 03:41:10,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:41:10,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1732 transitions. [2023-08-31 03:41:10,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 133.23076923076923) internal successors, (1732), 13 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:10,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 399.0) internal successors, (5586), 14 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:10,417 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 399.0) internal successors, (5586), 14 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:10,417 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 300 flow. Second operand 13 states and 1732 transitions. [2023-08-31 03:41:10,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 126 transitions, 913 flow [2023-08-31 03:41:10,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 126 transitions, 841 flow, removed 30 selfloop flow, removed 2 redundant places. [2023-08-31 03:41:10,423 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 405 flow [2023-08-31 03:41:10,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=405, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2023-08-31 03:41:10,424 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2023-08-31 03:41:10,424 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 405 flow [2023-08-31 03:41:10,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 127.8) internal successors, (2556), 20 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:10,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:41:10,425 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:41:10,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 03:41:10,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-31 03:41:10,632 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:41:10,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:41:10,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1891154340, now seen corresponding path program 3 times [2023-08-31 03:41:10,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:41:10,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902580843] [2023-08-31 03:41:10,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:41:10,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:41:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:41:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:41:11,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:41:11,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902580843] [2023-08-31 03:41:11,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902580843] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:41:11,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003338378] [2023-08-31 03:41:11,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 03:41:11,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:41:11,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:41:11,561 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:41:11,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 03:41:11,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 03:41:11,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:41:11,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-31 03:41:11,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:41:11,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:41:11,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-31 03:41:12,026 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:41:12,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:41:12,148 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:41:12,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 45 treesize of output 37 [2023-08-31 03:41:12,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-08-31 03:41:12,381 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:41:12,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003338378] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:41:12,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:41:12,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2023-08-31 03:41:12,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686177353] [2023-08-31 03:41:12,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:41:12,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-31 03:41:12,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:41:12,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-31 03:41:12,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=599, Unknown=4, NotChecked=0, Total=702 [2023-08-31 03:41:13,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 399 [2023-08-31 03:41:13,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 405 flow. Second operand has 27 states, 27 states have (on average 139.44444444444446) internal successors, (3765), 27 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:13,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:41:13,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 399 [2023-08-31 03:41:13,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:41:16,912 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_312 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_312) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 0))) (= |c_thread2Thread1of1ForFork1_~j~0#1| 1)) is different from false [2023-08-31 03:41:17,788 INFO L130 PetriNetUnfolder]: 5890/9005 cut-off events. [2023-08-31 03:41:17,788 INFO L131 PetriNetUnfolder]: For 23201/23201 co-relation queries the response was YES. [2023-08-31 03:41:17,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37545 conditions, 9005 events. 5890/9005 cut-off events. For 23201/23201 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 52498 event pairs, 209 based on Foata normal form. 618/8530 useless extension candidates. Maximal degree in co-relation 37524. Up to 3355 conditions per place. [2023-08-31 03:41:17,868 INFO L137 encePairwiseOnDemand]: 382/399 looper letters, 409 selfloop transitions, 169 changer transitions 0/579 dead transitions. [2023-08-31 03:41:17,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 579 transitions, 4928 flow [2023-08-31 03:41:17,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-08-31 03:41:17,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-08-31 03:41:17,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6288 transitions. [2023-08-31 03:41:17,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36649763944745584 [2023-08-31 03:41:17,885 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6288 transitions. [2023-08-31 03:41:17,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6288 transitions. [2023-08-31 03:41:17,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:41:17,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6288 transitions. [2023-08-31 03:41:17,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 146.2325581395349) internal successors, (6288), 43 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:17,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 399.0) internal successors, (17556), 44 states have internal predecessors, (17556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:17,946 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 399.0) internal successors, (17556), 44 states have internal predecessors, (17556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:17,946 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 405 flow. Second operand 43 states and 6288 transitions. [2023-08-31 03:41:17,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 579 transitions, 4928 flow [2023-08-31 03:41:17,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 579 transitions, 4783 flow, removed 70 selfloop flow, removed 2 redundant places. [2023-08-31 03:41:17,976 INFO L231 Difference]: Finished difference. Result has 139 places, 239 transitions, 2590 flow [2023-08-31 03:41:17,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=2590, PETRI_PLACES=139, PETRI_TRANSITIONS=239} [2023-08-31 03:41:17,978 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 107 predicate places. [2023-08-31 03:41:17,978 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 239 transitions, 2590 flow [2023-08-31 03:41:17,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 139.44444444444446) internal successors, (3765), 27 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:17,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:41:17,979 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:41:17,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 03:41:18,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:41:18,189 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:41:18,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:41:18,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1670701830, now seen corresponding path program 4 times [2023-08-31 03:41:18,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:41:18,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098458358] [2023-08-31 03:41:18,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:41:18,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:41:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:41:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:41:19,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:41:19,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098458358] [2023-08-31 03:41:19,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098458358] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:41:19,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722989478] [2023-08-31 03:41:19,170 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 03:41:19,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:41:19,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:41:19,171 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:41:19,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 03:41:19,293 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 03:41:19,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:41:19,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-31 03:41:19,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:41:19,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:41:19,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-31 03:41:19,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:41:19,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-31 03:41:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:41:19,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:41:19,910 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:41:19,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 85 treesize of output 77 [2023-08-31 03:41:19,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 52 [2023-08-31 03:41:19,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2023-08-31 03:41:20,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:41:20,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722989478] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:41:20,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:41:20,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-08-31 03:41:20,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042693562] [2023-08-31 03:41:20,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:41:20,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-31 03:41:20,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:41:20,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-31 03:41:20,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2023-08-31 03:41:21,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-08-31 03:41:21,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 239 transitions, 2590 flow. Second operand has 29 states, 29 states have (on average 125.10344827586206) internal successors, (3628), 29 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:21,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:41:21,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-08-31 03:41:21,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:41:26,626 INFO L130 PetriNetUnfolder]: 11050/16930 cut-off events. [2023-08-31 03:41:26,626 INFO L131 PetriNetUnfolder]: For 274268/274268 co-relation queries the response was YES. [2023-08-31 03:41:26,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107572 conditions, 16930 events. 11050/16930 cut-off events. For 274268/274268 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 110495 event pairs, 841 based on Foata normal form. 150/15520 useless extension candidates. Maximal degree in co-relation 107520. Up to 6486 conditions per place. [2023-08-31 03:41:26,793 INFO L137 encePairwiseOnDemand]: 385/399 looper letters, 628 selfloop transitions, 395 changer transitions 4/1028 dead transitions. [2023-08-31 03:41:26,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 1028 transitions, 12876 flow [2023-08-31 03:41:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-31 03:41:26,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-31 03:41:26,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 5809 transitions. [2023-08-31 03:41:26,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3308840282524493 [2023-08-31 03:41:26,811 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 5809 transitions. [2023-08-31 03:41:26,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 5809 transitions. [2023-08-31 03:41:26,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:41:26,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 5809 transitions. [2023-08-31 03:41:26,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 132.02272727272728) internal successors, (5809), 44 states have internal predecessors, (5809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:26,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 399.0) internal successors, (17955), 45 states have internal predecessors, (17955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:26,857 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 399.0) internal successors, (17955), 45 states have internal predecessors, (17955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:26,858 INFO L175 Difference]: Start difference. First operand has 139 places, 239 transitions, 2590 flow. Second operand 44 states and 5809 transitions. [2023-08-31 03:41:26,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 1028 transitions, 12876 flow [2023-08-31 03:41:27,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 1028 transitions, 11304 flow, removed 775 selfloop flow, removed 8 redundant places. [2023-08-31 03:41:27,892 INFO L231 Difference]: Finished difference. Result has 197 places, 537 transitions, 6517 flow [2023-08-31 03:41:27,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=2126, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=6517, PETRI_PLACES=197, PETRI_TRANSITIONS=537} [2023-08-31 03:41:27,893 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 165 predicate places. [2023-08-31 03:41:27,893 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 537 transitions, 6517 flow [2023-08-31 03:41:27,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 125.10344827586206) internal successors, (3628), 29 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:27,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:41:27,896 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:41:27,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-31 03:41:28,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:41:28,099 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:41:28,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:41:28,099 INFO L85 PathProgramCache]: Analyzing trace with hash 309327165, now seen corresponding path program 5 times [2023-08-31 03:41:28,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:41:28,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094752239] [2023-08-31 03:41:28,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:41:28,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:41:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:41:29,164 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:41:29,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:41:29,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094752239] [2023-08-31 03:41:29,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094752239] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:41:29,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944171928] [2023-08-31 03:41:29,164 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 03:41:29,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:41:29,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:41:29,166 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:41:29,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 03:41:29,297 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-31 03:41:29,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:41:29,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-31 03:41:29,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:41:29,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:41:29,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-31 03:41:29,470 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:41:29,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:41:29,498 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_431 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_431) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 0))) is different from false [2023-08-31 03:41:29,516 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:41:29,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 45 treesize of output 37 [2023-08-31 03:41:29,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-08-31 03:41:29,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-31 03:41:29,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944171928] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:41:29,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:41:29,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 6] total 20 [2023-08-31 03:41:29,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043211249] [2023-08-31 03:41:29,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:41:29,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-31 03:41:29,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:41:29,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-31 03:41:29,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=329, Unknown=1, NotChecked=36, Total=420 [2023-08-31 03:41:29,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 399 [2023-08-31 03:41:29,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 537 transitions, 6517 flow. Second operand has 21 states, 21 states have (on average 127.57142857142857) internal successors, (2679), 21 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:29,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:41:29,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 399 [2023-08-31 03:41:29,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:41:33,639 INFO L130 PetriNetUnfolder]: 11491/17636 cut-off events. [2023-08-31 03:41:33,639 INFO L131 PetriNetUnfolder]: For 354943/354965 co-relation queries the response was YES. [2023-08-31 03:41:33,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124591 conditions, 17636 events. 11491/17636 cut-off events. For 354943/354965 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 115660 event pairs, 2085 based on Foata normal form. 34/16986 useless extension candidates. Maximal degree in co-relation 124520. Up to 9266 conditions per place. [2023-08-31 03:41:33,835 INFO L137 encePairwiseOnDemand]: 390/399 looper letters, 441 selfloop transitions, 295 changer transitions 0/740 dead transitions. [2023-08-31 03:41:33,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 740 transitions, 10051 flow [2023-08-31 03:41:33,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 03:41:33,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 03:41:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1857 transitions. [2023-08-31 03:41:33,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.332438238453276 [2023-08-31 03:41:33,840 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1857 transitions. [2023-08-31 03:41:33,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1857 transitions. [2023-08-31 03:41:33,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:41:33,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1857 transitions. [2023-08-31 03:41:33,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 132.64285714285714) internal successors, (1857), 14 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:33,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 399.0) internal successors, (5985), 15 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:33,854 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 399.0) internal successors, (5985), 15 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:33,854 INFO L175 Difference]: Start difference. First operand has 197 places, 537 transitions, 6517 flow. Second operand 14 states and 1857 transitions. [2023-08-31 03:41:33,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 740 transitions, 10051 flow [2023-08-31 03:41:36,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 740 transitions, 9774 flow, removed 115 selfloop flow, removed 13 redundant places. [2023-08-31 03:41:36,264 INFO L231 Difference]: Finished difference. Result has 201 places, 566 transitions, 7640 flow [2023-08-31 03:41:36,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=6288, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7640, PETRI_PLACES=201, PETRI_TRANSITIONS=566} [2023-08-31 03:41:36,266 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 169 predicate places. [2023-08-31 03:41:36,266 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 566 transitions, 7640 flow [2023-08-31 03:41:36,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 127.57142857142857) internal successors, (2679), 21 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:36,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:41:36,267 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:41:36,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-31 03:41:36,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-31 03:41:36,474 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:41:36,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:41:36,475 INFO L85 PathProgramCache]: Analyzing trace with hash -947555157, now seen corresponding path program 6 times [2023-08-31 03:41:36,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:41:36,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333319516] [2023-08-31 03:41:36,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:41:36,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:41:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:41:37,762 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:41:37,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:41:37,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333319516] [2023-08-31 03:41:37,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333319516] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:41:37,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156228821] [2023-08-31 03:41:37,764 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 03:41:37,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:41:37,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:41:37,765 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:41:37,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-31 03:41:38,093 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-31 03:41:38,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:41:38,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-31 03:41:38,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:41:38,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:41:38,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-31 03:41:38,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:41:38,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-31 03:41:38,339 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:41:38,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:41:38,371 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_493 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_493) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 0))) is different from false [2023-08-31 03:41:38,427 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:41:38,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 85 treesize of output 77 [2023-08-31 03:41:38,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 52 [2023-08-31 03:41:38,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2023-08-31 03:41:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 1 not checked. [2023-08-31 03:41:38,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156228821] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:41:38,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:41:38,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 7] total 24 [2023-08-31 03:41:38,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257569893] [2023-08-31 03:41:38,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:41:38,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-31 03:41:38,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:41:38,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-31 03:41:38,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=483, Unknown=1, NotChecked=44, Total=600 [2023-08-31 03:41:38,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 399 [2023-08-31 03:41:38,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 566 transitions, 7640 flow. Second operand has 25 states, 25 states have (on average 124.36) internal successors, (3109), 25 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:38,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:41:38,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 399 [2023-08-31 03:41:38,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:41:42,894 INFO L130 PetriNetUnfolder]: 11572/17779 cut-off events. [2023-08-31 03:41:42,894 INFO L131 PetriNetUnfolder]: For 395400/395422 co-relation queries the response was YES. [2023-08-31 03:41:42,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130741 conditions, 17779 events. 11572/17779 cut-off events. For 395400/395422 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 116515 event pairs, 2062 based on Foata normal form. 26/17222 useless extension candidates. Maximal degree in co-relation 130666. Up to 8462 conditions per place. [2023-08-31 03:41:43,080 INFO L137 encePairwiseOnDemand]: 391/399 looper letters, 430 selfloop transitions, 311 changer transitions 1/746 dead transitions. [2023-08-31 03:41:43,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 746 transitions, 10690 flow [2023-08-31 03:41:43,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 03:41:43,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 03:41:43,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1812 transitions. [2023-08-31 03:41:43,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32438238453276047 [2023-08-31 03:41:43,084 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1812 transitions. [2023-08-31 03:41:43,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1812 transitions. [2023-08-31 03:41:43,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:41:43,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1812 transitions. [2023-08-31 03:41:43,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 129.42857142857142) internal successors, (1812), 14 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:43,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 399.0) internal successors, (5985), 15 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:43,091 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 399.0) internal successors, (5985), 15 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:43,091 INFO L175 Difference]: Start difference. First operand has 201 places, 566 transitions, 7640 flow. Second operand 14 states and 1812 transitions. [2023-08-31 03:41:43,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 746 transitions, 10690 flow [2023-08-31 03:41:45,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 746 transitions, 10669 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-31 03:41:45,290 INFO L231 Difference]: Finished difference. Result has 212 places, 584 transitions, 8674 flow [2023-08-31 03:41:45,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=7619, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8674, PETRI_PLACES=212, PETRI_TRANSITIONS=584} [2023-08-31 03:41:45,291 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 180 predicate places. [2023-08-31 03:41:45,291 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 584 transitions, 8674 flow [2023-08-31 03:41:45,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 124.36) internal successors, (3109), 25 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:45,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:41:45,292 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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] [2023-08-31 03:41:45,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-31 03:41:45,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:41:45,494 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:41:45,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:41:45,494 INFO L85 PathProgramCache]: Analyzing trace with hash 858752648, now seen corresponding path program 1 times [2023-08-31 03:41:45,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:41:45,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174019521] [2023-08-31 03:41:45,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:41:45,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:41:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:41:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:41:45,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:41:45,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174019521] [2023-08-31 03:41:45,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174019521] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:41:45,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872373323] [2023-08-31 03:41:45,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:41:45,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:41:45,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:41:45,627 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:41:45,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-31 03:41:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:41:45,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-31 03:41:45,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:41:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:41:45,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:41:45,879 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:41:45,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872373323] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:41:45,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:41:45,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-31 03:41:45,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697095873] [2023-08-31 03:41:45,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:41:45,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 03:41:45,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:41:45,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 03:41:45,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-31 03:41:46,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 399 [2023-08-31 03:41:46,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 584 transitions, 8674 flow. Second operand has 12 states, 12 states have (on average 163.16666666666666) internal successors, (1958), 12 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:46,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:41:46,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 399 [2023-08-31 03:41:46,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:41:50,974 INFO L130 PetriNetUnfolder]: 14606/22798 cut-off events. [2023-08-31 03:41:50,975 INFO L131 PetriNetUnfolder]: For 583848/583882 co-relation queries the response was YES. [2023-08-31 03:41:51,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173126 conditions, 22798 events. 14606/22798 cut-off events. For 583848/583882 co-relation queries the response was YES. Maximal size of possible extension queue 1050. Compared 158929 event pairs, 4994 based on Foata normal form. 718/22695 useless extension candidates. Maximal degree in co-relation 173049. Up to 16805 conditions per place. [2023-08-31 03:41:51,225 INFO L137 encePairwiseOnDemand]: 394/399 looper letters, 569 selfloop transitions, 10 changer transitions 433/1017 dead transitions. [2023-08-31 03:41:51,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 1017 transitions, 16467 flow [2023-08-31 03:41:51,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 03:41:51,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 03:41:51,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1011 transitions. [2023-08-31 03:41:51,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223057644110276 [2023-08-31 03:41:51,227 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1011 transitions. [2023-08-31 03:41:51,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1011 transitions. [2023-08-31 03:41:51,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:41:51,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1011 transitions. [2023-08-31 03:41:51,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 168.5) internal successors, (1011), 6 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:51,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:51,231 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:51,231 INFO L175 Difference]: Start difference. First operand has 212 places, 584 transitions, 8674 flow. Second operand 6 states and 1011 transitions. [2023-08-31 03:41:51,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 1017 transitions, 16467 flow [2023-08-31 03:41:55,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 1017 transitions, 16067 flow, removed 8 selfloop flow, removed 11 redundant places. [2023-08-31 03:41:55,066 INFO L231 Difference]: Finished difference. Result has 209 places, 584 transitions, 8618 flow [2023-08-31 03:41:55,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=8463, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8618, PETRI_PLACES=209, PETRI_TRANSITIONS=584} [2023-08-31 03:41:55,067 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 177 predicate places. [2023-08-31 03:41:55,067 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 584 transitions, 8618 flow [2023-08-31 03:41:55,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 163.16666666666666) internal successors, (1958), 12 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:55,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:41:55,068 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:41:55,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-31 03:41:55,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:41:55,269 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:41:55,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:41:55,270 INFO L85 PathProgramCache]: Analyzing trace with hash -173494766, now seen corresponding path program 2 times [2023-08-31 03:41:55,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:41:55,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058356431] [2023-08-31 03:41:55,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:41:55,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:41:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:41:55,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:41:55,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:41:55,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058356431] [2023-08-31 03:41:55,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058356431] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:41:55,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097978891] [2023-08-31 03:41:55,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 03:41:55,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:41:55,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:41:55,480 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:41:55,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-31 03:41:55,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:41:55,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:41:55,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-31 03:41:55,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:41:55,940 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-31 03:41:55,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 03:41:55,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097978891] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:41:55,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 03:41:55,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-08-31 03:41:55,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046059411] [2023-08-31 03:41:55,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:41:55,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 03:41:55,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:41:55,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 03:41:55,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-31 03:41:55,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 399 [2023-08-31 03:41:55,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 584 transitions, 8618 flow. Second operand has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:41:55,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:41:55,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 399 [2023-08-31 03:41:55,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:41:59,873 INFO L130 PetriNetUnfolder]: 12192/18715 cut-off events. [2023-08-31 03:41:59,874 INFO L131 PetriNetUnfolder]: For 493871/493889 co-relation queries the response was YES. [2023-08-31 03:41:59,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151374 conditions, 18715 events. 12192/18715 cut-off events. For 493871/493889 co-relation queries the response was YES. Maximal size of possible extension queue 917. Compared 124434 event pairs, 2589 based on Foata normal form. 202/18219 useless extension candidates. Maximal degree in co-relation 151297. Up to 15394 conditions per place. [2023-08-31 03:42:00,056 INFO L137 encePairwiseOnDemand]: 395/399 looper letters, 568 selfloop transitions, 106 changer transitions 21/699 dead transitions. [2023-08-31 03:42:00,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 699 transitions, 12032 flow [2023-08-31 03:42:00,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 03:42:00,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 03:42:00,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 748 transitions. [2023-08-31 03:42:00,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46867167919799496 [2023-08-31 03:42:00,058 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 748 transitions. [2023-08-31 03:42:00,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 748 transitions. [2023-08-31 03:42:00,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:42:00,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 748 transitions. [2023-08-31 03:42:00,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:42:00,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 399.0) internal successors, (1995), 5 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:42:00,060 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 399.0) internal successors, (1995), 5 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:42:00,060 INFO L175 Difference]: Start difference. First operand has 209 places, 584 transitions, 8618 flow. Second operand 4 states and 748 transitions. [2023-08-31 03:42:00,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 699 transitions, 12032 flow [2023-08-31 03:42:02,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 699 transitions, 11803 flow, removed 103 selfloop flow, removed 5 redundant places. [2023-08-31 03:42:02,750 INFO L231 Difference]: Finished difference. Result has 207 places, 604 transitions, 9274 flow [2023-08-31 03:42:02,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=8412, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=9274, PETRI_PLACES=207, PETRI_TRANSITIONS=604} [2023-08-31 03:42:02,751 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 175 predicate places. [2023-08-31 03:42:02,751 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 604 transitions, 9274 flow [2023-08-31 03:42:02,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:42:02,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:42:02,752 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:42:02,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-31 03:42:02,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-31 03:42:02,958 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:42:02,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:42:02,959 INFO L85 PathProgramCache]: Analyzing trace with hash 237154215, now seen corresponding path program 1 times [2023-08-31 03:42:02,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:42:02,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259396300] [2023-08-31 03:42:02,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:42:02,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:42:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:42:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:42:03,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:42:03,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259396300] [2023-08-31 03:42:03,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259396300] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:42:03,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275573763] [2023-08-31 03:42:03,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:42:03,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:42:03,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:42:03,475 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:42:03,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-31 03:42:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:42:03,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-31 03:42:03,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:42:03,909 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:42:03,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:42:03,985 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-31 03:42:03,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 11 [2023-08-31 03:42:04,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:42:04,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275573763] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:42:04,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:42:04,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2023-08-31 03:42:04,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494020290] [2023-08-31 03:42:04,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:42:04,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-31 03:42:04,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:42:04,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-31 03:42:04,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2023-08-31 03:42:04,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 399 [2023-08-31 03:42:04,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 604 transitions, 9274 flow. Second operand has 23 states, 23 states have (on average 148.95652173913044) internal successors, (3426), 23 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:42:04,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:42:04,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 399 [2023-08-31 03:42:04,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:42:19,561 INFO L130 PetriNetUnfolder]: 41569/63142 cut-off events. [2023-08-31 03:42:19,561 INFO L131 PetriNetUnfolder]: For 1729762/1729810 co-relation queries the response was YES. [2023-08-31 03:42:20,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528669 conditions, 63142 events. 41569/63142 cut-off events. For 1729762/1729810 co-relation queries the response was YES. Maximal size of possible extension queue 2596. Compared 478154 event pairs, 3001 based on Foata normal form. 2414/63321 useless extension candidates. Maximal degree in co-relation 528593. Up to 23739 conditions per place. [2023-08-31 03:42:20,636 INFO L137 encePairwiseOnDemand]: 390/399 looper letters, 2637 selfloop transitions, 530 changer transitions 5/3175 dead transitions. [2023-08-31 03:42:20,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 3175 transitions, 54031 flow [2023-08-31 03:42:20,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-31 03:42:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-31 03:42:20,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3573 transitions. [2023-08-31 03:42:20,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38934292252370056 [2023-08-31 03:42:20,641 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3573 transitions. [2023-08-31 03:42:20,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3573 transitions. [2023-08-31 03:42:20,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:42:20,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3573 transitions. [2023-08-31 03:42:20,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 155.34782608695653) internal successors, (3573), 23 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:42:20,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 399.0) internal successors, (9576), 24 states have internal predecessors, (9576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:42:20,652 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 399.0) internal successors, (9576), 24 states have internal predecessors, (9576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:42:20,653 INFO L175 Difference]: Start difference. First operand has 207 places, 604 transitions, 9274 flow. Second operand 23 states and 3573 transitions. [2023-08-31 03:42:20,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 3175 transitions, 54031 flow [2023-08-31 03:42:41,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 3175 transitions, 51989 flow, removed 402 selfloop flow, removed 5 redundant places. [2023-08-31 03:42:41,961 INFO L231 Difference]: Finished difference. Result has 222 places, 1172 transitions, 22369 flow [2023-08-31 03:42:41,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=8957, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=22369, PETRI_PLACES=222, PETRI_TRANSITIONS=1172} [2023-08-31 03:42:41,962 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 190 predicate places. [2023-08-31 03:42:41,962 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 1172 transitions, 22369 flow [2023-08-31 03:42:41,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 148.95652173913044) internal successors, (3426), 23 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:42:41,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:42:41,963 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:42:41,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-31 03:42:42,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-31 03:42:42,164 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:42:42,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:42:42,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1098212869, now seen corresponding path program 2 times [2023-08-31 03:42:42,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:42:42,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098207351] [2023-08-31 03:42:42,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:42:42,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:42:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:42:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:42:43,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:42:43,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098207351] [2023-08-31 03:42:43,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098207351] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:42:43,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686492146] [2023-08-31 03:42:43,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 03:42:43,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:42:43,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:42:43,766 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:42:43,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-31 03:42:43,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:42:43,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:42:43,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-31 03:42:43,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:42:44,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:42:44,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-31 03:42:44,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-31 03:42:44,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:42:44,254 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:42:44,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 44 treesize of output 36 [2023-08-31 03:42:44,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-08-31 03:42:44,380 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-31 03:42:44,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686492146] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:42:44,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:42:44,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 6] total 25 [2023-08-31 03:42:44,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382018998] [2023-08-31 03:42:44,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:42:44,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-31 03:42:44,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:42:44,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-31 03:42:44,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=567, Unknown=8, NotChecked=0, Total=650 [2023-08-31 03:42:45,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 399 [2023-08-31 03:42:45,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 1172 transitions, 22369 flow. Second operand has 26 states, 26 states have (on average 117.53846153846153) internal successors, (3056), 26 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:42:45,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:42:45,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 399 [2023-08-31 03:42:45,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:43:01,764 INFO L130 PetriNetUnfolder]: 37589/56669 cut-off events. [2023-08-31 03:43:01,764 INFO L131 PetriNetUnfolder]: For 1705222/1705258 co-relation queries the response was YES. [2023-08-31 03:43:02,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498900 conditions, 56669 events. 37589/56669 cut-off events. For 1705222/1705258 co-relation queries the response was YES. Maximal size of possible extension queue 2001. Compared 410301 event pairs, 4984 based on Foata normal form. 2216/56920 useless extension candidates. Maximal degree in co-relation 498821. Up to 34133 conditions per place. [2023-08-31 03:43:02,634 INFO L137 encePairwiseOnDemand]: 385/399 looper letters, 1375 selfloop transitions, 300 changer transitions 2/1680 dead transitions. [2023-08-31 03:43:02,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 1680 transitions, 34471 flow [2023-08-31 03:43:02,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-31 03:43:02,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-31 03:43:02,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2072 transitions. [2023-08-31 03:43:02,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30546955624355004 [2023-08-31 03:43:02,637 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2072 transitions. [2023-08-31 03:43:02,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2072 transitions. [2023-08-31 03:43:02,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:43:02,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2072 transitions. [2023-08-31 03:43:02,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 121.88235294117646) internal successors, (2072), 17 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:43:02,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 399.0) internal successors, (7182), 18 states have internal predecessors, (7182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:43:02,645 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 399.0) internal successors, (7182), 18 states have internal predecessors, (7182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:43:02,645 INFO L175 Difference]: Start difference. First operand has 222 places, 1172 transitions, 22369 flow. Second operand 17 states and 2072 transitions. [2023-08-31 03:43:02,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 1680 transitions, 34471 flow [2023-08-31 03:43:27,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 1680 transitions, 32821 flow, removed 800 selfloop flow, removed 4 redundant places. [2023-08-31 03:43:27,606 INFO L231 Difference]: Finished difference. Result has 242 places, 1238 transitions, 23586 flow [2023-08-31 03:43:27,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=21138, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=896, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=23586, PETRI_PLACES=242, PETRI_TRANSITIONS=1238} [2023-08-31 03:43:27,608 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 210 predicate places. [2023-08-31 03:43:27,608 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 1238 transitions, 23586 flow [2023-08-31 03:43:27,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 117.53846153846153) internal successors, (3056), 26 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:43:27,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:43:27,609 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:43:27,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-31 03:43:27,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-31 03:43:27,809 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:43:27,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:43:27,810 INFO L85 PathProgramCache]: Analyzing trace with hash -283939794, now seen corresponding path program 1 times [2023-08-31 03:43:27,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:43:27,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039511549] [2023-08-31 03:43:27,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:43:27,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:43:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:43:29,400 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:43:29,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:43:29,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039511549] [2023-08-31 03:43:29,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039511549] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:43:29,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043448484] [2023-08-31 03:43:29,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:43:29,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:43:29,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:43:29,402 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:43:29,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-31 03:43:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:43:29,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-31 03:43:29,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:43:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:43:30,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:43:30,621 INFO L321 Elim1Store]: treesize reduction 19, result has 79.6 percent of original size [2023-08-31 03:43:30,621 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 62 treesize of output 95 [2023-08-31 03:43:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:43:31,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043448484] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:43:31,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:43:31,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 12] total 40 [2023-08-31 03:43:31,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702885007] [2023-08-31 03:43:31,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:43:31,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-08-31 03:43:31,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:43:31,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-08-31 03:43:31,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1549, Unknown=0, NotChecked=0, Total=1722 [2023-08-31 03:43:34,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 399 [2023-08-31 03:43:34,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 1238 transitions, 23586 flow. Second operand has 42 states, 42 states have (on average 133.0) internal successors, (5586), 42 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:43:34,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:43:34,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 399 [2023-08-31 03:43:34,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:44:04,619 INFO L130 PetriNetUnfolder]: 58363/88437 cut-off events. [2023-08-31 03:44:04,619 INFO L131 PetriNetUnfolder]: For 2297484/2297484 co-relation queries the response was YES. [2023-08-31 03:44:05,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752336 conditions, 88437 events. 58363/88437 cut-off events. For 2297484/2297484 co-relation queries the response was YES. Maximal size of possible extension queue 3182. Compared 688371 event pairs, 4966 based on Foata normal form. 59/83622 useless extension candidates. Maximal degree in co-relation 752249. Up to 46073 conditions per place. [2023-08-31 03:44:06,314 INFO L137 encePairwiseOnDemand]: 383/399 looper letters, 1338 selfloop transitions, 983 changer transitions 130/2452 dead transitions. [2023-08-31 03:44:06,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 2452 transitions, 50344 flow [2023-08-31 03:44:06,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-08-31 03:44:06,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-08-31 03:44:06,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 6819 transitions. [2023-08-31 03:44:06,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3487801135491791 [2023-08-31 03:44:06,332 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 6819 transitions. [2023-08-31 03:44:06,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 6819 transitions. [2023-08-31 03:44:06,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:44:06,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 6819 transitions. [2023-08-31 03:44:06,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 139.16326530612244) internal successors, (6819), 49 states have internal predecessors, (6819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:44:06,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 399.0) internal successors, (19950), 50 states have internal predecessors, (19950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:44:06,363 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 399.0) internal successors, (19950), 50 states have internal predecessors, (19950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:44:06,364 INFO L175 Difference]: Start difference. First operand has 242 places, 1238 transitions, 23586 flow. Second operand 49 states and 6819 transitions. [2023-08-31 03:44:06,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 2452 transitions, 50344 flow [2023-08-31 03:44:54,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 2452 transitions, 49254 flow, removed 133 selfloop flow, removed 6 redundant places. [2023-08-31 03:44:54,823 INFO L231 Difference]: Finished difference. Result has 309 places, 1918 transitions, 41527 flow [2023-08-31 03:44:54,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=23057, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=374, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=41527, PETRI_PLACES=309, PETRI_TRANSITIONS=1918} [2023-08-31 03:44:54,824 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 277 predicate places. [2023-08-31 03:44:54,825 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 1918 transitions, 41527 flow [2023-08-31 03:44:54,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 133.0) internal successors, (5586), 42 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:44:54,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:44:54,826 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:44:54,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-31 03:44:55,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-31 03:44:55,031 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:44:55,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:44:55,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1162292086, now seen corresponding path program 2 times [2023-08-31 03:44:55,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:44:55,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498230390] [2023-08-31 03:44:55,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:44:55,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:44:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:44:56,935 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:44:56,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:44:56,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498230390] [2023-08-31 03:44:56,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498230390] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:44:56,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061146625] [2023-08-31 03:44:56,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 03:44:56,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:44:56,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:44:56,941 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:44:56,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-31 03:44:57,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 03:44:57,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:44:57,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 74 conjunts are in the unsatisfiable core [2023-08-31 03:44:57,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:44:57,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:44:57,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-31 03:44:58,306 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:44:58,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:44:58,846 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:44:58,846 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 188 treesize of output 224 [2023-08-31 03:44:58,883 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:44:58,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 132 [2023-08-31 03:45:00,439 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:45:00,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061146625] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:45:00,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:45:00,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 48 [2023-08-31 03:45:00,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675055434] [2023-08-31 03:45:00,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:45:00,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-08-31 03:45:00,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:45:00,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-08-31 03:45:00,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2219, Unknown=1, NotChecked=0, Total=2450 [2023-08-31 03:45:01,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 399 [2023-08-31 03:45:01,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 1918 transitions, 41527 flow. Second operand has 50 states, 50 states have (on average 106.66) internal successors, (5333), 50 states have internal predecessors, (5333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:45:01,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:45:01,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 399 [2023-08-31 03:45:01,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:45:17,517 WARN L222 SmtUtils]: Spent 7.00s on a formula simplification. DAG size of input: 92 DAG size of output: 92 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:45:27,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:45:29,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 03:46:07,395 INFO L130 PetriNetUnfolder]: 59874/91078 cut-off events. [2023-08-31 03:46:07,395 INFO L131 PetriNetUnfolder]: For 2720872/2720872 co-relation queries the response was YES. [2023-08-31 03:46:08,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 851305 conditions, 91078 events. 59874/91078 cut-off events. For 2720872/2720872 co-relation queries the response was YES. Maximal size of possible extension queue 3226. Compared 715287 event pairs, 4952 based on Foata normal form. 37/86167 useless extension candidates. Maximal degree in co-relation 851194. Up to 48326 conditions per place. [2023-08-31 03:46:09,378 INFO L137 encePairwiseOnDemand]: 383/399 looper letters, 1542 selfloop transitions, 1110 changer transitions 97/2750 dead transitions. [2023-08-31 03:46:09,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 2750 transitions, 60876 flow [2023-08-31 03:46:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-08-31 03:46:09,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2023-08-31 03:46:09,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 6978 transitions. [2023-08-31 03:46:09,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28207615813727865 [2023-08-31 03:46:09,387 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 6978 transitions. [2023-08-31 03:46:09,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 6978 transitions. [2023-08-31 03:46:09,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:46:09,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 6978 transitions. [2023-08-31 03:46:09,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 112.54838709677419) internal successors, (6978), 62 states have internal predecessors, (6978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:46:09,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 399.0) internal successors, (25137), 63 states have internal predecessors, (25137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:46:09,417 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 399.0) internal successors, (25137), 63 states have internal predecessors, (25137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:46:09,417 INFO L175 Difference]: Start difference. First operand has 309 places, 1918 transitions, 41527 flow. Second operand 62 states and 6978 transitions. [2023-08-31 03:46:09,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 2750 transitions, 60876 flow [2023-08-31 03:47:06,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 2750 transitions, 59217 flow, removed 798 selfloop flow, removed 17 redundant places. [2023-08-31 03:47:06,204 INFO L231 Difference]: Finished difference. Result has 381 places, 2176 transitions, 48508 flow [2023-08-31 03:47:06,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=40467, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1918, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=903, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=949, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=48508, PETRI_PLACES=381, PETRI_TRANSITIONS=2176} [2023-08-31 03:47:06,206 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 349 predicate places. [2023-08-31 03:47:06,206 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 2176 transitions, 48508 flow [2023-08-31 03:47:06,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 106.66) internal successors, (5333), 50 states have internal predecessors, (5333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:47:06,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:47:06,207 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:47:06,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-31 03:47:06,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-31 03:47:06,413 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:47:06,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:47:06,414 INFO L85 PathProgramCache]: Analyzing trace with hash 510345502, now seen corresponding path program 3 times [2023-08-31 03:47:06,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:47:06,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037289184] [2023-08-31 03:47:06,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:47:06,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:47:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:47:08,456 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:47:08,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:47:08,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037289184] [2023-08-31 03:47:08,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037289184] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:47:08,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729199543] [2023-08-31 03:47:08,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 03:47:08,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:47:08,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:47:08,461 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:47:08,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-31 03:47:08,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 03:47:08,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:47:08,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 73 conjunts are in the unsatisfiable core [2023-08-31 03:47:08,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:47:08,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 03:47:08,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 03:47:08,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 03:47:08,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 03:47:11,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:47:11,326 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-08-31 03:47:11,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 39 [2023-08-31 03:47:11,556 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 03:47:11,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:47:11,725 WARN L839 $PredicateComparison]: unable to prove that (or (< c_~q2_back~0 0) (let ((.cse0 (+ c_~q2~0.offset (* c_~q2_front~0 4)))) (and (forall ((v_ArrVal_910 (Array Int Int))) (<= c_~N~0 (+ c_~t~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_910) c_~q2~0.base) .cse0)))) (forall ((v_ArrVal_910 (Array Int Int))) (< (+ c_~t~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_910) c_~q2~0.base) .cse0)) (+ c_~N~0 1))))) (<= c_~n2~0 c_~q2_back~0)) is different from false [2023-08-31 03:47:13,131 INFO L321 Elim1Store]: treesize reduction 32, result has 64.8 percent of original size [2023-08-31 03:47:13,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 371 treesize of output 249 [2023-08-31 03:47:13,401 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:47:13,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 7285 treesize of output 7109 [2023-08-31 03:47:13,806 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:47:13,807 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 1869 treesize of output 1884 [2023-08-31 03:47:13,949 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:47:13,950 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 1803 treesize of output 1752 [2023-08-31 03:47:14,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1671 treesize of output 1647 [2023-08-31 03:47:14,226 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:47:14,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1663 treesize of output 1695 [2023-08-31 03:47:14,406 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:47:14,407 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 1557 treesize of output 1386 [2023-08-31 03:47:14,594 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:47:14,595 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 1305 treesize of output 1260 [2023-08-31 03:47:14,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1179 treesize of output 1155 Killed by 15