./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 17:42:34,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 17:42:34,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 17:42:34,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 17:42:34,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 17:42:34,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 17:42:34,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 17:42:34,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 17:42:34,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 17:42:34,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 17:42:34,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 17:42:34,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 17:42:34,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 17:42:34,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 17:42:34,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 17:42:34,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 17:42:34,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 17:42:34,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 17:42:34,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 17:42:34,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 17:42:34,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 17:42:34,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 17:42:34,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 17:42:34,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 17:42:34,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 17:42:34,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 17:42:34,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 17:42:34,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 17:42:34,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 17:42:34,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 17:42:34,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 17:42:34,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 17:42:35,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 17:42:35,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 17:42:35,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 17:42:35,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 17:42:35,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 17:42:35,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 17:42:35,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 17:42:35,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 17:42:35,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 17:42:35,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 17:42:35,047 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 17:42:35,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 17:42:35,048 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 17:42:35,048 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 17:42:35,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 17:42:35,049 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 17:42:35,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 17:42:35,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 17:42:35,050 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 17:42:35,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 17:42:35,051 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 17:42:35,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 17:42:35,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 17:42:35,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 17:42:35,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 17:42:35,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 17:42:35,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 17:42:35,052 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 17:42:35,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 17:42:35,053 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 17:42:35,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 17:42:35,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 17:42:35,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 17:42:35,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 17:42:35,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:42:35,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 17:42:35,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 17:42:35,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 17:42:35,054 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 17:42:35,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 17:42:35,055 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 17:42:35,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 17:42:35,055 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 17:42:35,055 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 17:42:35,055 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 17:42:35,056 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 17:42:35,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 17:42:35,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 17:42:35,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 17:42:35,387 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 17:42:35,388 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 17:42:35,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-08-30 17:42:36,553 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 17:42:36,796 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 17:42:36,797 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-08-30 17:42:36,810 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76f023ccd/102dd96f5a854b96afd864d2cbec0663/FLAGc22e0c6de [2023-08-30 17:42:36,822 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76f023ccd/102dd96f5a854b96afd864d2cbec0663 [2023-08-30 17:42:36,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 17:42:36,825 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 17:42:36,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 17:42:36,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 17:42:36,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 17:42:36,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:42:36" (1/1) ... [2023-08-30 17:42:36,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31cb3942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:36, skipping insertion in model container [2023-08-30 17:42:36,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:42:36" (1/1) ... [2023-08-30 17:42:36,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 17:42:36,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 17:42:37,038 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2023-08-30 17:42:37,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:42:37,230 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 17:42:37,242 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2023-08-30 17:42:37,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:42:37,355 INFO L208 MainTranslator]: Completed translation [2023-08-30 17:42:37,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:37 WrapperNode [2023-08-30 17:42:37,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 17:42:37,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 17:42:37,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 17:42:37,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 17:42:37,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:37" (1/1) ... [2023-08-30 17:42:37,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:37" (1/1) ... [2023-08-30 17:42:37,423 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 118 [2023-08-30 17:42:37,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 17:42:37,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 17:42:37,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 17:42:37,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 17:42:37,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:37" (1/1) ... [2023-08-30 17:42:37,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:37" (1/1) ... [2023-08-30 17:42:37,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:37" (1/1) ... [2023-08-30 17:42:37,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:37" (1/1) ... [2023-08-30 17:42:37,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:37" (1/1) ... [2023-08-30 17:42:37,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:37" (1/1) ... [2023-08-30 17:42:37,464 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:37" (1/1) ... [2023-08-30 17:42:37,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:37" (1/1) ... [2023-08-30 17:42:37,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 17:42:37,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 17:42:37,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 17:42:37,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 17:42:37,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:37" (1/1) ... [2023-08-30 17:42:37,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:42:37,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:42:37,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 17:42:37,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 17:42:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 17:42:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-08-30 17:42:37,537 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-08-30 17:42:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 17:42:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 17:42:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 17:42:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 17:42:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 17:42:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 17:42:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 17:42:37,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 17:42:37,539 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 17:42:37,717 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 17:42:37,726 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 17:42:37,969 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 17:42:37,976 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 17:42:37,977 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 17:42:37,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:42:37 BoogieIcfgContainer [2023-08-30 17:42:37,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 17:42:37,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 17:42:37,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 17:42:37,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 17:42:37,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:42:36" (1/3) ... [2023-08-30 17:42:37,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2296d847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:42:37, skipping insertion in model container [2023-08-30 17:42:37,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:37" (2/3) ... [2023-08-30 17:42:37,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2296d847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:42:37, skipping insertion in model container [2023-08-30 17:42:37,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:42:37" (3/3) ... [2023-08-30 17:42:37,989 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-08-30 17:42:37,995 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 17:42:38,004 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 17:42:38,005 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 17:42:38,005 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 17:42:38,105 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 17:42:38,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 128 transitions, 261 flow [2023-08-30 17:42:38,216 INFO L130 PetriNetUnfolder]: 10/127 cut-off events. [2023-08-30 17:42:38,216 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:42:38,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 127 events. 10/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 216 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-30 17:42:38,221 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 128 transitions, 261 flow [2023-08-30 17:42:38,227 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 127 transitions, 257 flow [2023-08-30 17:42:38,230 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 17:42:38,243 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 127 transitions, 257 flow [2023-08-30 17:42:38,247 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 127 transitions, 257 flow [2023-08-30 17:42:38,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 127 transitions, 257 flow [2023-08-30 17:42:38,289 INFO L130 PetriNetUnfolder]: 10/127 cut-off events. [2023-08-30 17:42:38,289 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:42:38,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 127 events. 10/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 216 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-30 17:42:38,298 INFO L119 LiptonReduction]: Number of co-enabled transitions 3920 [2023-08-30 17:42:41,768 INFO L134 LiptonReduction]: Checked pairs total: 5367 [2023-08-30 17:42:41,768 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-08-30 17:42:41,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 17:42:41,785 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;@6f1564db, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:42:41,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-30 17:42:41,789 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-08-30 17:42:41,789 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:42:41,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:42:41,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 17:42:41,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-30 17:42:41,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:42:41,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2035688472, now seen corresponding path program 1 times [2023-08-30 17:42:41,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:42:41,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973491123] [2023-08-30 17:42:41,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:42:41,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:42:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:42:42,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:42:42,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:42:42,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973491123] [2023-08-30 17:42:42,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973491123] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:42:42,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:42:42,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:42:42,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711720830] [2023-08-30 17:42:42,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:42:42,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 17:42:42,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:42:42,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 17:42:42,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 17:42:42,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 253 [2023-08-30 17:42:42,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 27 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:42,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:42:42,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 253 [2023-08-30 17:42:42,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:42:42,747 INFO L130 PetriNetUnfolder]: 135/242 cut-off events. [2023-08-30 17:42:42,747 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:42:42,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 242 events. 135/242 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 708 event pairs, 54 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 479. Up to 198 conditions per place. [2023-08-30 17:42:42,756 INFO L137 encePairwiseOnDemand]: 246/253 looper letters, 36 selfloop transitions, 4 changer transitions 2/43 dead transitions. [2023-08-30 17:42:42,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 43 transitions, 173 flow [2023-08-30 17:42:42,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 17:42:42,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 17:42:42,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 504 transitions. [2023-08-30 17:42:42,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980237154150198 [2023-08-30 17:42:42,771 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 504 transitions. [2023-08-30 17:42:42,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 504 transitions. [2023-08-30 17:42:42,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:42:42,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 504 transitions. [2023-08-30 17:42:42,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:42,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:42,785 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:42,786 INFO L175 Difference]: Start difference. First operand has 25 places, 27 transitions, 57 flow. Second operand 4 states and 504 transitions. [2023-08-30 17:42:42,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 43 transitions, 173 flow [2023-08-30 17:42:42,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 43 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 17:42:42,789 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 79 flow [2023-08-30 17:42:42,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=79, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2023-08-30 17:42:42,793 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-08-30 17:42:42,794 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 79 flow [2023-08-30 17:42:42,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:42,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:42:42,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:42:42,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 17:42:42,795 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-30 17:42:42,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:42:42,795 INFO L85 PathProgramCache]: Analyzing trace with hash -821612424, now seen corresponding path program 1 times [2023-08-30 17:42:42,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:42:42,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092601338] [2023-08-30 17:42:42,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:42:42,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:42:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:42:42,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:42:42,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:42:42,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092601338] [2023-08-30 17:42:42,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092601338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:42:42,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:42:42,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:42:42,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538860207] [2023-08-30 17:42:42,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:42:42,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:42:42,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:42:42,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:42:42,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:42:42,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 253 [2023-08-30 17:42:42,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:42,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:42:42,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 253 [2023-08-30 17:42:42,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:42:43,053 INFO L130 PetriNetUnfolder]: 197/359 cut-off events. [2023-08-30 17:42:43,053 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-08-30 17:42:43,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 359 events. 197/359 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1162 event pairs, 39 based on Foata normal form. 14/307 useless extension candidates. Maximal degree in co-relation 781. Up to 226 conditions per place. [2023-08-30 17:42:43,055 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 40 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2023-08-30 17:42:43,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 46 transitions, 211 flow [2023-08-30 17:42:43,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:42:43,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:42:43,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2023-08-30 17:42:43,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49538866930171277 [2023-08-30 17:42:43,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2023-08-30 17:42:43,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2023-08-30 17:42:43,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:42:43,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2023-08-30 17:42:43,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:43,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:43,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:43,062 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 79 flow. Second operand 3 states and 376 transitions. [2023-08-30 17:42:43,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 46 transitions, 211 flow [2023-08-30 17:42:43,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 211 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 17:42:43,064 INFO L231 Difference]: Finished difference. Result has 31 places, 32 transitions, 114 flow [2023-08-30 17:42:43,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=31, PETRI_TRANSITIONS=32} [2023-08-30 17:42:43,065 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2023-08-30 17:42:43,065 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 32 transitions, 114 flow [2023-08-30 17:42:43,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:43,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:42:43,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:42:43,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 17:42:43,066 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-30 17:42:43,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:42:43,067 INFO L85 PathProgramCache]: Analyzing trace with hash 178518608, now seen corresponding path program 2 times [2023-08-30 17:42:43,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:42:43,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840868105] [2023-08-30 17:42:43,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:42:43,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:42:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:42:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:42:43,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:42:43,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840868105] [2023-08-30 17:42:43,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840868105] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:42:43,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:42:43,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:42:43,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363109479] [2023-08-30 17:42:43,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:42:43,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:42:43,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:42:43,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:42:43,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:42:43,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 253 [2023-08-30 17:42:43,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:43,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:42:43,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 253 [2023-08-30 17:42:43,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:42:43,293 INFO L130 PetriNetUnfolder]: 29/78 cut-off events. [2023-08-30 17:42:43,293 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2023-08-30 17:42:43,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 78 events. 29/78 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 154 event pairs, 1 based on Foata normal form. 12/82 useless extension candidates. Maximal degree in co-relation 193. Up to 47 conditions per place. [2023-08-30 17:42:43,294 INFO L137 encePairwiseOnDemand]: 249/253 looper letters, 23 selfloop transitions, 3 changer transitions 2/29 dead transitions. [2023-08-30 17:42:43,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 151 flow [2023-08-30 17:42:43,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:42:43,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:42:43,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2023-08-30 17:42:43,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4743083003952569 [2023-08-30 17:42:43,296 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 360 transitions. [2023-08-30 17:42:43,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 360 transitions. [2023-08-30 17:42:43,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:42:43,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 360 transitions. [2023-08-30 17:42:43,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:43,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:43,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:43,300 INFO L175 Difference]: Start difference. First operand has 31 places, 32 transitions, 114 flow. Second operand 3 states and 360 transitions. [2023-08-30 17:42:43,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 151 flow [2023-08-30 17:42:43,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 141 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 17:42:43,302 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 84 flow [2023-08-30 17:42:43,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-30 17:42:43,303 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2023-08-30 17:42:43,303 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 84 flow [2023-08-30 17:42:43,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:43,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:42:43,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:42:43,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 17:42:43,304 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-30 17:42:43,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:42:43,304 INFO L85 PathProgramCache]: Analyzing trace with hash 206580876, now seen corresponding path program 1 times [2023-08-30 17:42:43,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:42:43,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305066925] [2023-08-30 17:42:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:42:43,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:42:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:42:43,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:42:43,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:42:43,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305066925] [2023-08-30 17:42:43,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305066925] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:42:43,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:42:43,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 17:42:43,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761035112] [2023-08-30 17:42:43,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:42:43,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 17:42:43,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:42:43,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 17:42:43,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 17:42:44,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 253 [2023-08-30 17:42:44,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 84 flow. Second operand has 8 states, 8 states have (on average 108.375) internal successors, (867), 8 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:44,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:42:44,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 253 [2023-08-30 17:42:44,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:42:44,199 INFO L130 PetriNetUnfolder]: 29/89 cut-off events. [2023-08-30 17:42:44,199 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-30 17:42:44,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 89 events. 29/89 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 213 event pairs, 9 based on Foata normal form. 2/83 useless extension candidates. Maximal degree in co-relation 219. Up to 58 conditions per place. [2023-08-30 17:42:44,200 INFO L137 encePairwiseOnDemand]: 243/253 looper letters, 34 selfloop transitions, 8 changer transitions 1/44 dead transitions. [2023-08-30 17:42:44,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 224 flow [2023-08-30 17:42:44,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 17:42:44,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 17:42:44,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 903 transitions. [2023-08-30 17:42:44,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461462450592885 [2023-08-30 17:42:44,203 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 903 transitions. [2023-08-30 17:42:44,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 903 transitions. [2023-08-30 17:42:44,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:42:44,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 903 transitions. [2023-08-30 17:42:44,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 112.875) internal successors, (903), 8 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:44,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 253.0) internal successors, (2277), 9 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:44,211 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 253.0) internal successors, (2277), 9 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:44,211 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 84 flow. Second operand 8 states and 903 transitions. [2023-08-30 17:42:44,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 224 flow [2023-08-30 17:42:44,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 210 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 17:42:44,213 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 144 flow [2023-08-30 17:42:44,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=144, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-08-30 17:42:44,213 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 15 predicate places. [2023-08-30 17:42:44,214 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 144 flow [2023-08-30 17:42:44,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 108.375) internal successors, (867), 8 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:44,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:42:44,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:42:44,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 17:42:44,215 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-30 17:42:44,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:42:44,215 INFO L85 PathProgramCache]: Analyzing trace with hash 429077015, now seen corresponding path program 1 times [2023-08-30 17:42:44,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:42:44,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658443080] [2023-08-30 17:42:44,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:42:44,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:42:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:42:44,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:42:44,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:42:44,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658443080] [2023-08-30 17:42:44,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658443080] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:42:44,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:42:44,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:42:44,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539362827] [2023-08-30 17:42:44,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:42:44,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 17:42:44,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:42:44,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 17:42:44,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 17:42:44,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 253 [2023-08-30 17:42:44,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:44,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:42:44,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 253 [2023-08-30 17:42:44,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:42:44,423 INFO L130 PetriNetUnfolder]: 37/105 cut-off events. [2023-08-30 17:42:44,423 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2023-08-30 17:42:44,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 105 events. 37/105 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 250 event pairs, 3 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 292. Up to 34 conditions per place. [2023-08-30 17:42:44,424 INFO L137 encePairwiseOnDemand]: 245/253 looper letters, 43 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2023-08-30 17:42:44,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 345 flow [2023-08-30 17:42:44,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 17:42:44,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 17:42:44,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 602 transitions. [2023-08-30 17:42:44,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4758893280632411 [2023-08-30 17:42:44,427 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 602 transitions. [2023-08-30 17:42:44,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 602 transitions. [2023-08-30 17:42:44,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:42:44,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 602 transitions. [2023-08-30 17:42:44,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.4) internal successors, (602), 5 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:44,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:44,431 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:44,432 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 144 flow. Second operand 5 states and 602 transitions. [2023-08-30 17:42:44,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 345 flow [2023-08-30 17:42:44,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 334 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-30 17:42:44,434 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 195 flow [2023-08-30 17:42:44,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-08-30 17:42:44,435 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 19 predicate places. [2023-08-30 17:42:44,435 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 195 flow [2023-08-30 17:42:44,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:44,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:42:44,436 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:42:44,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 17:42:44,436 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-30 17:42:44,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:42:44,436 INFO L85 PathProgramCache]: Analyzing trace with hash 834094987, now seen corresponding path program 2 times [2023-08-30 17:42:44,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:42:44,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069155080] [2023-08-30 17:42:44,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:42:44,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:42:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:42:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:42:44,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:42:44,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069155080] [2023-08-30 17:42:44,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069155080] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:42:44,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443263934] [2023-08-30 17:42:44,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 17:42:44,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:42:44,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:42:44,965 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:42:44,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 17:42:45,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 17:42:45,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:42:45,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 57 conjunts are in the unsatisfiable core [2023-08-30 17:42:45,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:42:45,236 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-08-30 17:42:45,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:42:45,244 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 14 treesize of output 16 [2023-08-30 17:42:45,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2023-08-30 17:42:45,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2023-08-30 17:42:45,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:42:45,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:42:45,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443263934] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:42:45,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 17:42:45,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2023-08-30 17:42:45,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801375551] [2023-08-30 17:42:45,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:42:45,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 17:42:45,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:42:45,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 17:42:45,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2023-08-30 17:42:45,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 253 [2023-08-30 17:42:45,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 195 flow. Second operand has 10 states, 10 states have (on average 108.6) internal successors, (1086), 10 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:45,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:42:45,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 253 [2023-08-30 17:42:45,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:42:46,044 INFO L130 PetriNetUnfolder]: 35/107 cut-off events. [2023-08-30 17:42:46,044 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-08-30 17:42:46,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 107 events. 35/107 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 243 event pairs, 5 based on Foata normal form. 4/111 useless extension candidates. Maximal degree in co-relation 337. Up to 55 conditions per place. [2023-08-30 17:42:46,045 INFO L137 encePairwiseOnDemand]: 245/253 looper letters, 45 selfloop transitions, 11 changer transitions 1/58 dead transitions. [2023-08-30 17:42:46,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 58 transitions, 394 flow [2023-08-30 17:42:46,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 17:42:46,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 17:42:46,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1127 transitions. [2023-08-30 17:42:46,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2023-08-30 17:42:46,049 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1127 transitions. [2023-08-30 17:42:46,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1127 transitions. [2023-08-30 17:42:46,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:42:46,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1127 transitions. [2023-08-30 17:42:46,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 112.7) internal successors, (1127), 10 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:46,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 253.0) internal successors, (2783), 11 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:46,057 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 253.0) internal successors, (2783), 11 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:46,057 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 195 flow. Second operand 10 states and 1127 transitions. [2023-08-30 17:42:46,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 58 transitions, 394 flow [2023-08-30 17:42:46,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 386 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 17:42:46,070 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 253 flow [2023-08-30 17:42:46,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=253, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2023-08-30 17:42:46,071 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 30 predicate places. [2023-08-30 17:42:46,071 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 253 flow [2023-08-30 17:42:46,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 108.6) internal successors, (1086), 10 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:46,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:42:46,072 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:42:46,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 17:42:46,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 17:42:46,282 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-30 17:42:46,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:42:46,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1758691163, now seen corresponding path program 1 times [2023-08-30 17:42:46,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:42:46,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503475842] [2023-08-30 17:42:46,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:42:46,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:42:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:42:47,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:42:47,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:42:47,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503475842] [2023-08-30 17:42:47,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503475842] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:42:47,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340232139] [2023-08-30 17:42:47,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:42:47,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:42:47,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:42:47,019 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:42:47,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 17:42:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:42:47,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-30 17:42:47,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:42:47,134 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-08-30 17:42:47,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:42:47,138 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 14 treesize of output 16 [2023-08-30 17:42:47,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2023-08-30 17:42:47,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2023-08-30 17:42:47,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:42:47,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 17:42:47,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:42:47,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340232139] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 17:42:47,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 17:42:47,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12, 8] total 30 [2023-08-30 17:42:47,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918024514] [2023-08-30 17:42:47,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:42:47,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:42:47,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:42:47,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:42:47,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2023-08-30 17:42:48,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 253 [2023-08-30 17:42:48,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 253 flow. Second operand has 12 states, 12 states have (on average 104.5) internal successors, (1254), 12 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:48,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:42:48,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 253 [2023-08-30 17:42:48,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:42:49,322 INFO L130 PetriNetUnfolder]: 86/239 cut-off events. [2023-08-30 17:42:49,322 INFO L131 PetriNetUnfolder]: For 385/385 co-relation queries the response was YES. [2023-08-30 17:42:49,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 239 events. 86/239 cut-off events. For 385/385 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 805 event pairs, 12 based on Foata normal form. 20/259 useless extension candidates. Maximal degree in co-relation 790. Up to 59 conditions per place. [2023-08-30 17:42:49,324 INFO L137 encePairwiseOnDemand]: 238/253 looper letters, 58 selfloop transitions, 39 changer transitions 32/130 dead transitions. [2023-08-30 17:42:49,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 130 transitions, 923 flow [2023-08-30 17:42:49,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-30 17:42:49,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-30 17:42:49,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2801 transitions. [2023-08-30 17:42:49,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42581331711766496 [2023-08-30 17:42:49,333 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2801 transitions. [2023-08-30 17:42:49,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2801 transitions. [2023-08-30 17:42:49,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:42:49,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2801 transitions. [2023-08-30 17:42:49,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 107.73076923076923) internal successors, (2801), 26 states have internal predecessors, (2801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:49,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 253.0) internal successors, (6831), 27 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:49,355 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 253.0) internal successors, (6831), 27 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:49,355 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 253 flow. Second operand 26 states and 2801 transitions. [2023-08-30 17:42:49,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 130 transitions, 923 flow [2023-08-30 17:42:49,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 130 transitions, 903 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-30 17:42:49,362 INFO L231 Difference]: Finished difference. Result has 85 places, 68 transitions, 569 flow [2023-08-30 17:42:49,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=569, PETRI_PLACES=85, PETRI_TRANSITIONS=68} [2023-08-30 17:42:49,363 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 60 predicate places. [2023-08-30 17:42:49,364 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 68 transitions, 569 flow [2023-08-30 17:42:49,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 104.5) internal successors, (1254), 12 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:49,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:42:49,365 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:42:49,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 17:42:49,575 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,SelfDestructingSolverStorable6 [2023-08-30 17:42:49,576 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-30 17:42:49,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:42:49,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1932590508, now seen corresponding path program 2 times [2023-08-30 17:42:49,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:42:49,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388123478] [2023-08-30 17:42:49,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:42:49,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:42:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:42:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 17:42:50,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:42:50,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388123478] [2023-08-30 17:42:50,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388123478] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:42:50,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668592543] [2023-08-30 17:42:50,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 17:42:50,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:42:50,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:42:50,449 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:42:50,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 17:42:50,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 17:42:50,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:42:50,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-30 17:42:50,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:42:50,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2023-08-30 17:42:50,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2023-08-30 17:42:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:42:50,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 17:42:51,071 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-30 17:42:51,071 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 48 treesize of output 36 [2023-08-30 17:42:51,095 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:42:51,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668592543] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 17:42:51,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 17:42:51,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 10] total 30 [2023-08-30 17:42:51,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673047788] [2023-08-30 17:42:51,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 17:42:51,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 17:42:51,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:42:51,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 17:42:51,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=697, Unknown=0, NotChecked=0, Total=870 [2023-08-30 17:42:52,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 253 [2023-08-30 17:42:52,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 68 transitions, 569 flow. Second operand has 30 states, 30 states have (on average 105.06666666666666) internal successors, (3152), 30 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:52,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:42:52,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 253 [2023-08-30 17:42:52,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:42:53,340 INFO L130 PetriNetUnfolder]: 49/164 cut-off events. [2023-08-30 17:42:53,340 INFO L131 PetriNetUnfolder]: For 513/513 co-relation queries the response was YES. [2023-08-30 17:42:53,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 164 events. 49/164 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 445 event pairs, 9 based on Foata normal form. 14/178 useless extension candidates. Maximal degree in co-relation 658. Up to 83 conditions per place. [2023-08-30 17:42:53,341 INFO L137 encePairwiseOnDemand]: 239/253 looper letters, 0 selfloop transitions, 0 changer transitions 76/76 dead transitions. [2023-08-30 17:42:53,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 76 transitions, 745 flow [2023-08-30 17:42:53,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 17:42:53,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 17:42:53,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1695 transitions. [2023-08-30 17:42:53,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41872529644268774 [2023-08-30 17:42:53,346 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1695 transitions. [2023-08-30 17:42:53,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1695 transitions. [2023-08-30 17:42:53,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:42:53,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1695 transitions. [2023-08-30 17:42:53,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 105.9375) internal successors, (1695), 16 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:53,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 253.0) internal successors, (4301), 17 states have internal predecessors, (4301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:53,358 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 253.0) internal successors, (4301), 17 states have internal predecessors, (4301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:53,358 INFO L175 Difference]: Start difference. First operand has 85 places, 68 transitions, 569 flow. Second operand 16 states and 1695 transitions. [2023-08-30 17:42:53,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 76 transitions, 745 flow [2023-08-30 17:42:53,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 76 transitions, 645 flow, removed 42 selfloop flow, removed 5 redundant places. [2023-08-30 17:42:53,362 INFO L231 Difference]: Finished difference. Result has 83 places, 0 transitions, 0 flow [2023-08-30 17:42:53,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=83, PETRI_TRANSITIONS=0} [2023-08-30 17:42:53,363 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 58 predicate places. [2023-08-30 17:42:53,363 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 0 transitions, 0 flow [2023-08-30 17:42:53,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 105.06666666666666) internal successors, (3152), 30 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:42:53,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-30 17:42:53,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-30 17:42:53,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-30 17:42:53,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-30 17:42:53,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-30 17:42:53,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 17:42:53,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:42:53,579 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1] [2023-08-30 17:42:53,582 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 17:42:53,582 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 17:42:53,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:42:53 BasicIcfg [2023-08-30 17:42:53,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 17:42:53,586 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 17:42:53,586 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 17:42:53,586 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 17:42:53,586 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:42:37" (3/4) ... [2023-08-30 17:42:53,588 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 17:42:53,593 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2023-08-30 17:42:53,596 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-30 17:42:53,597 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-30 17:42:53,597 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 17:42:53,597 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 17:42:53,619 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 17:42:53,619 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 17:42:53,619 INFO L158 Benchmark]: Toolchain (without parser) took 16794.03ms. Allocated memory was 73.4MB in the beginning and 188.7MB in the end (delta: 115.3MB). Free memory was 49.7MB in the beginning and 107.1MB in the end (delta: -57.5MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. [2023-08-30 17:42:53,620 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory is still 34.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 17:42:53,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 529.88ms. Allocated memory is still 73.4MB. Free memory was 49.4MB in the beginning and 48.1MB in the end (delta: 1.4MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2023-08-30 17:42:53,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.09ms. Allocated memory is still 73.4MB. Free memory was 48.1MB in the beginning and 45.9MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 17:42:53,620 INFO L158 Benchmark]: Boogie Preprocessor took 42.37ms. Allocated memory is still 73.4MB. Free memory was 45.9MB in the beginning and 44.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 17:42:53,621 INFO L158 Benchmark]: RCFGBuilder took 513.60ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 44.1MB in the beginning and 63.1MB in the end (delta: -19.0MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2023-08-30 17:42:53,622 INFO L158 Benchmark]: TraceAbstraction took 15602.01ms. Allocated memory was 88.1MB in the beginning and 188.7MB in the end (delta: 100.7MB). Free memory was 62.7MB in the beginning and 110.3MB in the end (delta: -47.6MB). Peak memory consumption was 52.3MB. Max. memory is 16.1GB. [2023-08-30 17:42:53,622 INFO L158 Benchmark]: Witness Printer took 33.31ms. Allocated memory is still 188.7MB. Free memory was 110.3MB in the beginning and 107.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 17:42:53,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory is still 34.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 529.88ms. Allocated memory is still 73.4MB. Free memory was 49.4MB in the beginning and 48.1MB in the end (delta: 1.4MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.09ms. Allocated memory is still 73.4MB. Free memory was 48.1MB in the beginning and 45.9MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 42.37ms. Allocated memory is still 73.4MB. Free memory was 45.9MB in the beginning and 44.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 513.60ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 44.1MB in the beginning and 63.1MB in the end (delta: -19.0MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. * TraceAbstraction took 15602.01ms. Allocated memory was 88.1MB in the beginning and 188.7MB in the end (delta: 100.7MB). Free memory was 62.7MB in the beginning and 110.3MB in the end (delta: -47.6MB). Peak memory consumption was 52.3MB. Max. memory is 16.1GB. * Witness Printer took 33.31ms. Allocated memory is still 188.7MB. Free memory was 110.3MB in the beginning and 107.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 121 PlacesBefore, 25 PlacesAfterwards, 127 TransitionsBefore, 27 TransitionsAfterwards, 3920 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 4 ChoiceCompositions, 125 TotalNumberOfCompositions, 5367 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3848, independent: 3700, independent conditional: 0, independent unconditional: 3700, dependent: 148, dependent conditional: 0, dependent unconditional: 148, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2274, independent: 2234, independent conditional: 0, independent unconditional: 2234, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3848, independent: 1466, independent conditional: 0, independent unconditional: 1466, dependent: 108, dependent conditional: 0, dependent unconditional: 108, unknown: 2274, unknown conditional: 0, unknown unconditional: 2274] , Statistics on independence cache: Total cache size (in pairs): 92, Positive cache size: 76, Positive conditional cache size: 0, Positive unconditional cache size: 76, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 170 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.4s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2239 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1838 mSDsluCounter, 1342 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1260 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6891 IncrementalHoareTripleChecker+Invalid, 6966 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 82 mSDtfsCounter, 6891 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=569occurred in iteration=7, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 173 NumberOfCodeBlocks, 173 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 203 ConstructedInterpolants, 7 QuantifiedInterpolants, 2826 SizeOfPredicates, 70 NumberOfNonLiveVariables, 681 ConjunctsInSsa, 178 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 26/37 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 17:42:53,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE