./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c --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/weaver/test-easy1.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fc27937a34d27b10c960489127716dfcbd25a3140e1829dbc6f42b419387a4e7 --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 21:44:31,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 21:44:31,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 21:44:31,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 21:44:31,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 21:44:31,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 21:44:31,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 21:44:31,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 21:44:31,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 21:44:31,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 21:44:31,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 21:44:31,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 21:44:31,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 21:44:31,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 21:44:31,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 21:44:31,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 21:44:31,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 21:44:31,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 21:44:31,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 21:44:31,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 21:44:31,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 21:44:31,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 21:44:31,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 21:44:31,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 21:44:31,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 21:44:31,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 21:44:31,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 21:44:31,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 21:44:31,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 21:44:31,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 21:44:31,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 21:44:31,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 21:44:32,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 21:44:32,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 21:44:32,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 21:44:32,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 21:44:32,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 21:44:32,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 21:44:32,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 21:44:32,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 21:44:32,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 21:44:32,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 21:44:32,037 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 21:44:32,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 21:44:32,037 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 21:44:32,038 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 21:44:32,038 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 21:44:32,038 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 21:44:32,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 21:44:32,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 21:44:32,039 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 21:44:32,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 21:44:32,039 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 21:44:32,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 21:44:32,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 21:44:32,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 21:44:32,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 21:44:32,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 21:44:32,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 21:44:32,040 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 21:44:32,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 21:44:32,040 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 21:44:32,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 21:44:32,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 21:44:32,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 21:44:32,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 21:44:32,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 21:44:32,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 21:44:32,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 21:44:32,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 21:44:32,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 21:44:32,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 21:44:32,042 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 21:44:32,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 21:44:32,042 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 21:44:32,043 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 21:44:32,043 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 21:44:32,043 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc27937a34d27b10c960489127716dfcbd25a3140e1829dbc6f42b419387a4e7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 21:44:32,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 21:44:32,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 21:44:32,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 21:44:32,408 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 21:44:32,408 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 21:44:32,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-08-30 21:44:33,612 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 21:44:33,856 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 21:44:33,857 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-08-30 21:44:33,863 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6301eeddc/3a9b7ff92e73442c89637145a543179e/FLAGc809f8158 [2023-08-30 21:44:33,875 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6301eeddc/3a9b7ff92e73442c89637145a543179e [2023-08-30 21:44:33,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 21:44:33,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 21:44:33,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 21:44:33,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 21:44:33,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 21:44:33,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:44:33" (1/1) ... [2023-08-30 21:44:33,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a58cbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:33, skipping insertion in model container [2023-08-30 21:44:33,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:44:33" (1/1) ... [2023-08-30 21:44:33,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 21:44:33,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 21:44:34,063 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c[1876,1889] [2023-08-30 21:44:34,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 21:44:34,076 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 21:44:34,096 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c[1876,1889] [2023-08-30 21:44:34,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 21:44:34,115 INFO L208 MainTranslator]: Completed translation [2023-08-30 21:44:34,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:34 WrapperNode [2023-08-30 21:44:34,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 21:44:34,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 21:44:34,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 21:44:34,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 21:44:34,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:34" (1/1) ... [2023-08-30 21:44:34,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:34" (1/1) ... [2023-08-30 21:44:34,151 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-08-30 21:44:34,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 21:44:34,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 21:44:34,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 21:44:34,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 21:44:34,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:34" (1/1) ... [2023-08-30 21:44:34,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:34" (1/1) ... [2023-08-30 21:44:34,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:34" (1/1) ... [2023-08-30 21:44:34,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:34" (1/1) ... [2023-08-30 21:44:34,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:34" (1/1) ... [2023-08-30 21:44:34,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:34" (1/1) ... [2023-08-30 21:44:34,188 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:34" (1/1) ... [2023-08-30 21:44:34,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:34" (1/1) ... [2023-08-30 21:44:34,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 21:44:34,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 21:44:34,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 21:44:34,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 21:44:34,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:34" (1/1) ... [2023-08-30 21:44:34,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 21:44:34,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:44:34,234 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 21:44:34,259 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 21:44:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 21:44:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 21:44:34,275 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 21:44:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 21:44:34,275 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 21:44:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 21:44:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 21:44:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 21:44:34,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 21:44:34,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 21:44:34,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 21:44:34,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 21:44:34,278 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 21:44:34,348 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 21:44:34,349 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 21:44:34,472 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 21:44:34,478 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 21:44:34,478 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 21:44:34,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:44:34 BoogieIcfgContainer [2023-08-30 21:44:34,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 21:44:34,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 21:44:34,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 21:44:34,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 21:44:34,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 09:44:33" (1/3) ... [2023-08-30 21:44:34,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321fceef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:44:34, skipping insertion in model container [2023-08-30 21:44:34,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:44:34" (2/3) ... [2023-08-30 21:44:34,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321fceef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:44:34, skipping insertion in model container [2023-08-30 21:44:34,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:44:34" (3/3) ... [2023-08-30 21:44:34,487 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2023-08-30 21:44:34,494 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 21:44:34,501 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 21:44:34,502 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 21:44:34,502 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 21:44:34,553 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 21:44:34,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 79 transitions, 174 flow [2023-08-30 21:44:34,650 INFO L130 PetriNetUnfolder]: 6/77 cut-off events. [2023-08-30 21:44:34,651 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 21:44:34,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 77 events. 6/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-08-30 21:44:34,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 79 transitions, 174 flow [2023-08-30 21:44:34,659 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 69 transitions, 150 flow [2023-08-30 21:44:34,673 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 21:44:34,680 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 69 transitions, 150 flow [2023-08-30 21:44:34,682 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 69 transitions, 150 flow [2023-08-30 21:44:34,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 69 transitions, 150 flow [2023-08-30 21:44:34,708 INFO L130 PetriNetUnfolder]: 6/69 cut-off events. [2023-08-30 21:44:34,708 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 21:44:34,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 69 events. 6/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-08-30 21:44:34,710 INFO L119 LiptonReduction]: Number of co-enabled transitions 368 [2023-08-30 21:44:36,585 INFO L134 LiptonReduction]: Checked pairs total: 388 [2023-08-30 21:44:36,585 INFO L136 LiptonReduction]: Total number of compositions: 67 [2023-08-30 21:44:36,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 21:44:36,612 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;@cf3c337, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 21:44:36,612 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-30 21:44:36,622 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2023-08-30 21:44:36,623 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 21:44:36,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:44:36,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:44:36,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 21:44:36,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:44:36,631 INFO L85 PathProgramCache]: Analyzing trace with hash 626447548, now seen corresponding path program 1 times [2023-08-30 21:44:36,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:44:36,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111651145] [2023-08-30 21:44:36,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:44:36,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:44:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:44:37,121 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 21:44:37,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:44:37,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111651145] [2023-08-30 21:44:37,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111651145] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:44:37,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:44:37,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 21:44:37,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205081093] [2023-08-30 21:44:37,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:44:37,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 21:44:37,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:44:37,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 21:44:37,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 21:44:37,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 146 [2023-08-30 21:44:37,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 21:44:37,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:44:37,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 146 [2023-08-30 21:44:37,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:44:37,225 INFO L130 PetriNetUnfolder]: 41/77 cut-off events. [2023-08-30 21:44:37,225 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 21:44:37,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 77 events. 41/77 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 165 event pairs, 9 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 120. Up to 51 conditions per place. [2023-08-30 21:44:37,227 INFO L137 encePairwiseOnDemand]: 142/146 looper letters, 19 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2023-08-30 21:44:37,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 23 transitions, 113 flow [2023-08-30 21:44:37,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 21:44:37,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 21:44:37,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2023-08-30 21:44:37,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931506849315068 [2023-08-30 21:44:37,239 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 216 transitions. [2023-08-30 21:44:37,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 216 transitions. [2023-08-30 21:44:37,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:44:37,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 216 transitions. [2023-08-30 21:44:37,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 21:44:37,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 21:44:37,251 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 21:44:37,253 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states and 216 transitions. [2023-08-30 21:44:37,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 23 transitions, 113 flow [2023-08-30 21:44:37,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 23 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 21:44:37,257 INFO L231 Difference]: Finished difference. Result has 17 places, 15 transitions, 49 flow [2023-08-30 21:44:37,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=17, PETRI_TRANSITIONS=15} [2023-08-30 21:44:37,261 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2023-08-30 21:44:37,262 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 15 transitions, 49 flow [2023-08-30 21:44:37,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 21:44:37,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:44:37,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:44:37,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 21:44:37,263 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 21:44:37,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:44:37,263 INFO L85 PathProgramCache]: Analyzing trace with hash -2054649994, now seen corresponding path program 1 times [2023-08-30 21:44:37,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:44:37,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33057262] [2023-08-30 21:44:37,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:44:37,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:44:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:44:37,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:44:37,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:44:37,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33057262] [2023-08-30 21:44:37,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33057262] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:44:37,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:44:37,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 21:44:37,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721352577] [2023-08-30 21:44:37,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:44:37,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 21:44:37,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:44:37,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 21:44:37,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 21:44:37,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-30 21:44:37,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 21:44:37,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:44:37,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-30 21:44:37,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:44:37,434 INFO L130 PetriNetUnfolder]: 35/71 cut-off events. [2023-08-30 21:44:37,434 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 21:44:37,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 71 events. 35/71 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 158 event pairs, 6 based on Foata normal form. 6/77 useless extension candidates. Maximal degree in co-relation 55. Up to 45 conditions per place. [2023-08-30 21:44:37,435 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 15 selfloop transitions, 3 changer transitions 10/28 dead transitions. [2023-08-30 21:44:37,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 28 transitions, 135 flow [2023-08-30 21:44:37,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 21:44:37,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 21:44:37,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 270 transitions. [2023-08-30 21:44:37,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623287671232877 [2023-08-30 21:44:37,438 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 270 transitions. [2023-08-30 21:44:37,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 270 transitions. [2023-08-30 21:44:37,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:44:37,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 270 transitions. [2023-08-30 21:44:37,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states 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 21:44:37,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states 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 21:44:37,445 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states 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 21:44:37,445 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 49 flow. Second operand 4 states and 270 transitions. [2023-08-30 21:44:37,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 28 transitions, 135 flow [2023-08-30 21:44:37,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 28 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 21:44:37,447 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 59 flow [2023-08-30 21:44:37,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=59, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2023-08-30 21:44:37,448 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 2 predicate places. [2023-08-30 21:44:37,448 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 59 flow [2023-08-30 21:44:37,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 21:44:37,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:44:37,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:44:37,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 21:44:37,449 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 21:44:37,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:44:37,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1524373393, now seen corresponding path program 1 times [2023-08-30 21:44:37,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:44:37,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574963143] [2023-08-30 21:44:37,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:44:37,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:44:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:44:37,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:44:37,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:44:37,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574963143] [2023-08-30 21:44:37,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574963143] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:44:37,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226388250] [2023-08-30 21:44:37,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:44:37,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:44:37,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:44:37,524 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 21:44:37,535 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 21:44:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:44:37,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 21:44:37,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:44:37,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:44:37,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:44:37,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:44:37,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226388250] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 21:44:37,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 21:44:37,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-08-30 21:44:37,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923887497] [2023-08-30 21:44:37,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:44:37,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 21:44:37,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:44:37,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 21:44:37,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 21:44:37,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-30 21:44:37,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 21:44:37,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:44:37,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-30 21:44:37,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:44:37,769 INFO L130 PetriNetUnfolder]: 40/79 cut-off events. [2023-08-30 21:44:37,770 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-30 21:44:37,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 79 events. 40/79 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 168 event pairs, 2 based on Foata normal form. 6/85 useless extension candidates. Maximal degree in co-relation 53. Up to 39 conditions per place. [2023-08-30 21:44:37,771 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 24 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-08-30 21:44:37,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 30 transitions, 165 flow [2023-08-30 21:44:37,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 21:44:37,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 21:44:37,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 270 transitions. [2023-08-30 21:44:37,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623287671232877 [2023-08-30 21:44:37,773 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 270 transitions. [2023-08-30 21:44:37,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 270 transitions. [2023-08-30 21:44:37,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:44:37,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 270 transitions. [2023-08-30 21:44:37,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states 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 21:44:37,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states 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 21:44:37,777 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states 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 21:44:37,777 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 59 flow. Second operand 4 states and 270 transitions. [2023-08-30 21:44:37,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 30 transitions, 165 flow [2023-08-30 21:44:37,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 30 transitions, 155 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 21:44:37,778 INFO L231 Difference]: Finished difference. Result has 22 places, 18 transitions, 88 flow [2023-08-30 21:44:37,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=22, PETRI_TRANSITIONS=18} [2023-08-30 21:44:37,779 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 4 predicate places. [2023-08-30 21:44:37,780 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 18 transitions, 88 flow [2023-08-30 21:44:37,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 21:44:37,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:44:37,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:44:37,792 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 21:44:37,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:44:37,987 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 21:44:37,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:44:37,987 INFO L85 PathProgramCache]: Analyzing trace with hash 664575342, now seen corresponding path program 2 times [2023-08-30 21:44:37,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:44:37,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749256221] [2023-08-30 21:44:37,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:44:37,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:44:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:44:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:44:38,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:44:38,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749256221] [2023-08-30 21:44:38,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749256221] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:44:38,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452723658] [2023-08-30 21:44:38,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 21:44:38,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:44:38,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:44:38,050 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 21:44:38,068 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 21:44:38,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 21:44:38,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 21:44:38,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 21:44:38,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:44:38,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:44:38,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:44:38,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:44:38,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452723658] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 21:44:38,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 21:44:38,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2023-08-30 21:44:38,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119032225] [2023-08-30 21:44:38,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:44:38,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 21:44:38,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:44:38,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 21:44:38,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-08-30 21:44:38,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 146 [2023-08-30 21:44:38,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 18 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 63.4) internal successors, (317), 5 states have internal predecessors, (317), 0 states have call successors, (0), 0 states 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 21:44:38,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:44:38,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 146 [2023-08-30 21:44:38,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:44:38,358 INFO L130 PetriNetUnfolder]: 76/156 cut-off events. [2023-08-30 21:44:38,359 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2023-08-30 21:44:38,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 156 events. 76/156 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 490 event pairs, 4 based on Foata normal form. 1/157 useless extension candidates. Maximal degree in co-relation 132. Up to 64 conditions per place. [2023-08-30 21:44:38,361 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 35 selfloop transitions, 9 changer transitions 2/46 dead transitions. [2023-08-30 21:44:38,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 46 transitions, 285 flow [2023-08-30 21:44:38,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 21:44:38,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 21:44:38,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 347 transitions. [2023-08-30 21:44:38,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47534246575342465 [2023-08-30 21:44:38,363 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 347 transitions. [2023-08-30 21:44:38,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 347 transitions. [2023-08-30 21:44:38,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:44:38,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 347 transitions. [2023-08-30 21:44:38,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 21:44:38,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 21:44:38,367 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 21:44:38,367 INFO L175 Difference]: Start difference. First operand has 22 places, 18 transitions, 88 flow. Second operand 5 states and 347 transitions. [2023-08-30 21:44:38,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 46 transitions, 285 flow [2023-08-30 21:44:38,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 46 transitions, 285 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 21:44:38,370 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 172 flow [2023-08-30 21:44:38,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-08-30 21:44:38,371 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 12 predicate places. [2023-08-30 21:44:38,371 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 172 flow [2023-08-30 21:44:38,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.4) internal successors, (317), 5 states have internal predecessors, (317), 0 states have call successors, (0), 0 states 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 21:44:38,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:44:38,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:44:38,380 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 21:44:38,578 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,SelfDestructingSolverStorable3 [2023-08-30 21:44:38,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 21:44:38,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:44:38,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1369565425, now seen corresponding path program 1 times [2023-08-30 21:44:38,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:44:38,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270764043] [2023-08-30 21:44:38,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:44:38,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:44:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:44:38,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:44:38,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:44:38,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270764043] [2023-08-30 21:44:38,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270764043] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:44:38,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242844915] [2023-08-30 21:44:38,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:44:38,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:44:38,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:44:38,674 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 21:44:38,702 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 21:44:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:44:38,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 21:44:38,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:44:38,827 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 21:44:38,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:44:38,908 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 21:44:38,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242844915] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 21:44:38,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 21:44:38,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 2] total 9 [2023-08-30 21:44:38,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489340393] [2023-08-30 21:44:38,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 21:44:38,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 21:44:38,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:44:38,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 21:44:38,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-30 21:44:38,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-30 21:44:38,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 172 flow. Second operand has 10 states, 10 states have (on average 63.7) internal successors, (637), 10 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:44:38,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:44:38,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-30 21:44:38,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:44:39,213 INFO L130 PetriNetUnfolder]: 124/248 cut-off events. [2023-08-30 21:44:39,213 INFO L131 PetriNetUnfolder]: For 724/724 co-relation queries the response was YES. [2023-08-30 21:44:39,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 248 events. 124/248 cut-off events. For 724/724 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 947 event pairs, 2 based on Foata normal form. 29/277 useless extension candidates. Maximal degree in co-relation 298. Up to 83 conditions per place. [2023-08-30 21:44:39,216 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 25 selfloop transitions, 13 changer transitions 38/76 dead transitions. [2023-08-30 21:44:39,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 76 transitions, 622 flow [2023-08-30 21:44:39,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 21:44:39,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 21:44:39,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 721 transitions. [2023-08-30 21:44:39,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489414694894147 [2023-08-30 21:44:39,218 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 721 transitions. [2023-08-30 21:44:39,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 721 transitions. [2023-08-30 21:44:39,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:44:39,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 721 transitions. [2023-08-30 21:44:39,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 65.54545454545455) internal successors, (721), 11 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:44:39,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states 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 21:44:39,223 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states 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 21:44:39,223 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 172 flow. Second operand 11 states and 721 transitions. [2023-08-30 21:44:39,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 76 transitions, 622 flow [2023-08-30 21:44:39,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 76 transitions, 614 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-30 21:44:39,229 INFO L231 Difference]: Finished difference. Result has 46 places, 27 transitions, 247 flow [2023-08-30 21:44:39,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=247, PETRI_PLACES=46, PETRI_TRANSITIONS=27} [2023-08-30 21:44:39,230 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 28 predicate places. [2023-08-30 21:44:39,230 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 27 transitions, 247 flow [2023-08-30 21:44:39,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 63.7) internal successors, (637), 10 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:44:39,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:44:39,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:44:39,239 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 21:44:39,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:44:39,437 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 21:44:39,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:44:39,437 INFO L85 PathProgramCache]: Analyzing trace with hash -514417009, now seen corresponding path program 2 times [2023-08-30 21:44:39,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:44:39,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754976497] [2023-08-30 21:44:39,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:44:39,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:44:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:44:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:44:39,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:44:39,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754976497] [2023-08-30 21:44:39,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754976497] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:44:39,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412278274] [2023-08-30 21:44:39,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 21:44:39,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:44:39,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:44:39,551 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 21:44:39,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 21:44:39,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 21:44:39,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 21:44:39,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 21:44:39,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:44:39,677 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 21:44:39,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 21:44:39,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412278274] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:44:39,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 21:44:39,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-08-30 21:44:39,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311639888] [2023-08-30 21:44:39,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:44:39,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 21:44:39,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:44:39,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 21:44:39,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 21:44:39,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-30 21:44:39,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 27 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 21:44:39,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:44:39,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-30 21:44:39,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:44:39,785 INFO L130 PetriNetUnfolder]: 48/94 cut-off events. [2023-08-30 21:44:39,786 INFO L131 PetriNetUnfolder]: For 534/534 co-relation queries the response was YES. [2023-08-30 21:44:39,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 94 events. 48/94 cut-off events. For 534/534 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 208 event pairs, 6 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 402. Up to 41 conditions per place. [2023-08-30 21:44:39,787 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 27 selfloop transitions, 4 changer transitions 10/41 dead transitions. [2023-08-30 21:44:39,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 404 flow [2023-08-30 21:44:39,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 21:44:39,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 21:44:39,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 389 transitions. [2023-08-30 21:44:39,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440639269406393 [2023-08-30 21:44:39,789 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 389 transitions. [2023-08-30 21:44:39,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 389 transitions. [2023-08-30 21:44:39,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:44:39,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 389 transitions. [2023-08-30 21:44:39,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 64.83333333333333) internal successors, (389), 6 states have internal predecessors, (389), 0 states have call successors, (0), 0 states 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 21:44:39,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states 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 21:44:39,792 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states 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 21:44:39,793 INFO L175 Difference]: Start difference. First operand has 46 places, 27 transitions, 247 flow. Second operand 6 states and 389 transitions. [2023-08-30 21:44:39,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 404 flow [2023-08-30 21:44:39,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 335 flow, removed 23 selfloop flow, removed 9 redundant places. [2023-08-30 21:44:39,800 INFO L231 Difference]: Finished difference. Result has 42 places, 25 transitions, 183 flow [2023-08-30 21:44:39,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=183, PETRI_PLACES=42, PETRI_TRANSITIONS=25} [2023-08-30 21:44:39,801 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 24 predicate places. [2023-08-30 21:44:39,801 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 25 transitions, 183 flow [2023-08-30 21:44:39,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 21:44:39,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:44:39,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:44:39,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 21:44:40,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:44:40,003 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 21:44:40,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:44:40,003 INFO L85 PathProgramCache]: Analyzing trace with hash -587854281, now seen corresponding path program 3 times [2023-08-30 21:44:40,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:44:40,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846315947] [2023-08-30 21:44:40,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:44:40,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:44:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:44:40,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:44:40,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:44:40,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846315947] [2023-08-30 21:44:40,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846315947] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:44:40,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046144006] [2023-08-30 21:44:40,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 21:44:40,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:44:40,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:44:40,129 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 21:44:40,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 21:44:40,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 21:44:40,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 21:44:40,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 21:44:40,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:44:40,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:44:40,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:44:40,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 21:44:40,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046144006] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 21:44:40,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 21:44:40,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 2] total 9 [2023-08-30 21:44:40,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69219397] [2023-08-30 21:44:40,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 21:44:40,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 21:44:40,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:44:40,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 21:44:40,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-30 21:44:40,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-30 21:44:40,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 25 transitions, 183 flow. Second operand has 10 states, 10 states have (on average 63.7) internal successors, (637), 10 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:44:40,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:44:40,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-30 21:44:40,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:44:40,498 INFO L130 PetriNetUnfolder]: 65/123 cut-off events. [2023-08-30 21:44:40,499 INFO L131 PetriNetUnfolder]: For 790/790 co-relation queries the response was YES. [2023-08-30 21:44:40,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 123 events. 65/123 cut-off events. For 790/790 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 317 event pairs, 4 based on Foata normal form. 5/128 useless extension candidates. Maximal degree in co-relation 616. Up to 43 conditions per place. [2023-08-30 21:44:40,500 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 26 selfloop transitions, 12 changer transitions 8/46 dead transitions. [2023-08-30 21:44:40,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 433 flow [2023-08-30 21:44:40,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 21:44:40,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 21:44:40,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 457 transitions. [2023-08-30 21:44:40,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4471624266144814 [2023-08-30 21:44:40,502 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 457 transitions. [2023-08-30 21:44:40,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 457 transitions. [2023-08-30 21:44:40,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:44:40,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 457 transitions. [2023-08-30 21:44:40,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 65.28571428571429) internal successors, (457), 7 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:44:40,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states 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 21:44:40,506 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states 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 21:44:40,506 INFO L175 Difference]: Start difference. First operand has 42 places, 25 transitions, 183 flow. Second operand 7 states and 457 transitions. [2023-08-30 21:44:40,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 433 flow [2023-08-30 21:44:40,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 387 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-08-30 21:44:40,509 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 255 flow [2023-08-30 21:44:40,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2023-08-30 21:44:40,510 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 24 predicate places. [2023-08-30 21:44:40,510 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 255 flow [2023-08-30 21:44:40,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 63.7) internal successors, (637), 10 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:44:40,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:44:40,511 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:44:40,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 21:44:40,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:44:40,724 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 21:44:40,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:44:40,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1141489714, now seen corresponding path program 4 times [2023-08-30 21:44:40,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:44:40,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913001891] [2023-08-30 21:44:40,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:44:40,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:44:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:44:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:44:40,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:44:40,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913001891] [2023-08-30 21:44:40,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913001891] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:44:40,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332976817] [2023-08-30 21:44:40,789 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 21:44:40,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:44:40,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:44:40,795 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 21:44:40,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 21:44:40,848 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 21:44:40,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 21:44:40,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 21:44:40,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:44:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:44:40,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:44:40,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:44:40,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332976817] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 21:44:40,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 21:44:40,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-08-30 21:44:40,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372643613] [2023-08-30 21:44:40,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 21:44:40,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 21:44:40,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:44:40,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 21:44:40,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-08-30 21:44:41,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-30 21:44:41,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 255 flow. Second operand has 10 states, 10 states have (on average 62.4) internal successors, (624), 10 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 21:44:41,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:44:41,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-30 21:44:41,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:44:41,162 INFO L130 PetriNetUnfolder]: 75/144 cut-off events. [2023-08-30 21:44:41,163 INFO L131 PetriNetUnfolder]: For 596/596 co-relation queries the response was YES. [2023-08-30 21:44:41,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 144 events. 75/144 cut-off events. For 596/596 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 407 event pairs, 0 based on Foata normal form. 8/152 useless extension candidates. Maximal degree in co-relation 394. Up to 67 conditions per place. [2023-08-30 21:44:41,164 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 39 selfloop transitions, 18 changer transitions 10/67 dead transitions. [2023-08-30 21:44:41,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 67 transitions, 607 flow [2023-08-30 21:44:41,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 21:44:41,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 21:44:41,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 838 transitions. [2023-08-30 21:44:41,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44151738672286617 [2023-08-30 21:44:41,167 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 838 transitions. [2023-08-30 21:44:41,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 838 transitions. [2023-08-30 21:44:41,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:44:41,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 838 transitions. [2023-08-30 21:44:41,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 64.46153846153847) internal successors, (838), 13 states have internal predecessors, (838), 0 states have call successors, (0), 0 states 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 21:44:41,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 146.0) internal successors, (2044), 14 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states 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 21:44:41,173 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 146.0) internal successors, (2044), 14 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states 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 21:44:41,173 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 255 flow. Second operand 13 states and 838 transitions. [2023-08-30 21:44:41,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 67 transitions, 607 flow [2023-08-30 21:44:41,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 67 transitions, 583 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-30 21:44:41,177 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 395 flow [2023-08-30 21:44:41,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=395, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-08-30 21:44:41,178 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 40 predicate places. [2023-08-30 21:44:41,178 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 395 flow [2023-08-30 21:44:41,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 62.4) internal successors, (624), 10 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 21:44:41,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:44:41,179 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:44:41,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 21:44:41,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:44:41,387 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 21:44:41,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:44:41,387 INFO L85 PathProgramCache]: Analyzing trace with hash -189341905, now seen corresponding path program 5 times [2023-08-30 21:44:41,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:44:41,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699961207] [2023-08-30 21:44:41,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:44:41,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:44:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:44:41,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:44:41,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:44:41,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699961207] [2023-08-30 21:44:41,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699961207] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:44:41,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923490716] [2023-08-30 21:44:41,476 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 21:44:41,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:44:41,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:44:41,478 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 21:44:41,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 21:44:41,530 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 21:44:41,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 21:44:41,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 21:44:41,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:44:41,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:44:41,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:44:41,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:44:41,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923490716] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 21:44:41,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 21:44:41,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-08-30 21:44:41,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601901425] [2023-08-30 21:44:41,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 21:44:41,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 21:44:41,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:44:41,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 21:44:41,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-08-30 21:44:41,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-30 21:44:41,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 395 flow. Second operand has 10 states, 10 states have (on average 62.4) internal successors, (624), 10 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 21:44:41,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:44:41,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-30 21:44:41,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:44:41,874 INFO L130 PetriNetUnfolder]: 100/179 cut-off events. [2023-08-30 21:44:41,875 INFO L131 PetriNetUnfolder]: For 1852/1852 co-relation queries the response was YES. [2023-08-30 21:44:41,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 179 events. 100/179 cut-off events. For 1852/1852 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 522 event pairs, 0 based on Foata normal form. 12/191 useless extension candidates. Maximal degree in co-relation 914. Up to 113 conditions per place. [2023-08-30 21:44:41,877 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 50 selfloop transitions, 17 changer transitions 11/78 dead transitions. [2023-08-30 21:44:41,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 909 flow [2023-08-30 21:44:41,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 21:44:41,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 21:44:41,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 839 transitions. [2023-08-30 21:44:41,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44204425711275025 [2023-08-30 21:44:41,880 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 839 transitions. [2023-08-30 21:44:41,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 839 transitions. [2023-08-30 21:44:41,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:44:41,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 839 transitions. [2023-08-30 21:44:41,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 64.53846153846153) internal successors, (839), 13 states have internal predecessors, (839), 0 states have call successors, (0), 0 states 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 21:44:41,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 146.0) internal successors, (2044), 14 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states 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 21:44:41,887 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 146.0) internal successors, (2044), 14 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states 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 21:44:41,887 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 395 flow. Second operand 13 states and 839 transitions. [2023-08-30 21:44:41,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 78 transitions, 909 flow [2023-08-30 21:44:41,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 78 transitions, 835 flow, removed 29 selfloop flow, removed 3 redundant places. [2023-08-30 21:44:41,895 INFO L231 Difference]: Finished difference. Result has 74 places, 53 transitions, 546 flow [2023-08-30 21:44:41,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=546, PETRI_PLACES=74, PETRI_TRANSITIONS=53} [2023-08-30 21:44:41,897 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 56 predicate places. [2023-08-30 21:44:41,897 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 53 transitions, 546 flow [2023-08-30 21:44:41,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 62.4) internal successors, (624), 10 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 21:44:41,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:44:41,897 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:44:41,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 21:44:42,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:44:42,103 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 21:44:42,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:44:42,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1556551870, now seen corresponding path program 6 times [2023-08-30 21:44:42,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:44:42,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688769766] [2023-08-30 21:44:42,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:44:42,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:44:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:44:42,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 21:44:42,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:44:42,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688769766] [2023-08-30 21:44:42,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688769766] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:44:42,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141466666] [2023-08-30 21:44:42,194 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 21:44:42,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:44:42,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:44:42,196 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 21:44:42,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 21:44:42,252 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 21:44:42,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 21:44:42,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 21:44:42,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:44:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 21:44:42,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 21:44:42,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141466666] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:44:42,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 21:44:42,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-08-30 21:44:42,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064234918] [2023-08-30 21:44:42,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:44:42,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 21:44:42,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:44:42,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 21:44:42,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-08-30 21:44:42,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-30 21:44:42,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 53 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 62.5) internal successors, (375), 6 states have internal predecessors, (375), 0 states have call successors, (0), 0 states 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 21:44:42,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:44:42,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-30 21:44:42,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:44:42,419 INFO L130 PetriNetUnfolder]: 99/189 cut-off events. [2023-08-30 21:44:42,419 INFO L131 PetriNetUnfolder]: For 2064/2064 co-relation queries the response was YES. [2023-08-30 21:44:42,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 189 events. 99/189 cut-off events. For 2064/2064 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 591 event pairs, 2 based on Foata normal form. 1/190 useless extension candidates. Maximal degree in co-relation 1086. Up to 112 conditions per place. [2023-08-30 21:44:42,421 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 17 selfloop transitions, 1 changer transitions 53/71 dead transitions. [2023-08-30 21:44:42,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 71 transitions, 851 flow [2023-08-30 21:44:42,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 21:44:42,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 21:44:42,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 392 transitions. [2023-08-30 21:44:42,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474885844748858 [2023-08-30 21:44:42,423 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 392 transitions. [2023-08-30 21:44:42,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 392 transitions. [2023-08-30 21:44:42,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:44:42,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 392 transitions. [2023-08-30 21:44:42,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states 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 21:44:42,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states 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 21:44:42,426 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states 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 21:44:42,426 INFO L175 Difference]: Start difference. First operand has 74 places, 53 transitions, 546 flow. Second operand 6 states and 392 transitions. [2023-08-30 21:44:42,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 71 transitions, 851 flow [2023-08-30 21:44:42,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 728 flow, removed 60 selfloop flow, removed 3 redundant places. [2023-08-30 21:44:42,436 INFO L231 Difference]: Finished difference. Result has 78 places, 17 transitions, 155 flow [2023-08-30 21:44:42,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=155, PETRI_PLACES=78, PETRI_TRANSITIONS=17} [2023-08-30 21:44:42,438 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 60 predicate places. [2023-08-30 21:44:42,438 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 17 transitions, 155 flow [2023-08-30 21:44:42,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.5) internal successors, (375), 6 states have internal predecessors, (375), 0 states have call successors, (0), 0 states 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 21:44:42,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:44:42,439 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:44:42,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 21:44:42,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 21:44:42,651 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 21:44:42,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:44:42,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1217237182, now seen corresponding path program 7 times [2023-08-30 21:44:42,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:44:42,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173860855] [2023-08-30 21:44:42,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:44:42,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:44:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:44:42,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 21:44:42,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:44:42,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173860855] [2023-08-30 21:44:42,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173860855] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:44:42,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892388544] [2023-08-30 21:44:42,824 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 21:44:42,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:44:42,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:44:42,836 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 21:44:42,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 21:44:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:44:42,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 21:44:42,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:44:43,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:44:43,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:44:43,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 21:44:43,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892388544] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 21:44:43,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 21:44:43,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 3] total 12 [2023-08-30 21:44:43,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145104646] [2023-08-30 21:44:43,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 21:44:43,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 21:44:43,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:44:43,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 21:44:43,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-30 21:44:43,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-30 21:44:43,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 17 transitions, 155 flow. Second operand has 13 states, 13 states have (on average 63.15384615384615) internal successors, (821), 13 states have internal predecessors, (821), 0 states have call successors, (0), 0 states 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 21:44:43,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:44:43,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-30 21:44:43,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:44:43,315 INFO L130 PetriNetUnfolder]: 20/56 cut-off events. [2023-08-30 21:44:43,315 INFO L131 PetriNetUnfolder]: For 1161/1161 co-relation queries the response was YES. [2023-08-30 21:44:43,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 56 events. 20/56 cut-off events. For 1161/1161 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 108 event pairs, 0 based on Foata normal form. 1/57 useless extension candidates. Maximal degree in co-relation 353. Up to 19 conditions per place. [2023-08-30 21:44:43,316 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2023-08-30 21:44:43,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 31 transitions, 359 flow [2023-08-30 21:44:43,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 21:44:43,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 21:44:43,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 571 transitions. [2023-08-30 21:44:43,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4345509893455099 [2023-08-30 21:44:43,318 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 571 transitions. [2023-08-30 21:44:43,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 571 transitions. [2023-08-30 21:44:43,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:44:43,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 571 transitions. [2023-08-30 21:44:43,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 63.44444444444444) internal successors, (571), 9 states have internal predecessors, (571), 0 states have call successors, (0), 0 states 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 21:44:43,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 146.0) internal successors, (1460), 10 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 21:44:43,321 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 146.0) internal successors, (1460), 10 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 21:44:43,321 INFO L175 Difference]: Start difference. First operand has 78 places, 17 transitions, 155 flow. Second operand 9 states and 571 transitions. [2023-08-30 21:44:43,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 31 transitions, 359 flow [2023-08-30 21:44:43,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 31 transitions, 219 flow, removed 52 selfloop flow, removed 24 redundant places. [2023-08-30 21:44:43,324 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-08-30 21:44:43,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-08-30 21:44:43,324 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 25 predicate places. [2023-08-30 21:44:43,325 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-08-30 21:44:43,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 63.15384615384615) internal successors, (821), 13 states have internal predecessors, (821), 0 states have call successors, (0), 0 states 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 21:44:43,327 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-30 21:44:43,328 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-30 21:44:43,328 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-30 21:44:43,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 21:44:43,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:44:43,534 INFO L445 BasicCegarLoop]: Path program histogram: [7, 2, 1, 1] [2023-08-30 21:44:43,536 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 21:44:43,536 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 21:44:43,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 09:44:43 BasicIcfg [2023-08-30 21:44:43,538 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 21:44:43,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 21:44:43,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 21:44:43,539 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 21:44:43,539 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:44:34" (3/4) ... [2023-08-30 21:44:43,541 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 21:44:43,546 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 21:44:43,546 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 21:44:43,550 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-30 21:44:43,550 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 21:44:43,551 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 21:44:43,551 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 21:44:43,576 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 21:44:43,576 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 21:44:43,577 INFO L158 Benchmark]: Toolchain (without parser) took 9695.34ms. Allocated memory was 62.9MB in the beginning and 151.0MB in the end (delta: 88.1MB). Free memory was 40.8MB in the beginning and 113.1MB in the end (delta: -72.4MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2023-08-30 21:44:43,577 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 62.9MB. Free memory was 40.2MB in the beginning and 40.2MB in the end (delta: 49.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 21:44:43,577 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.29ms. Allocated memory is still 62.9MB. Free memory was 40.6MB in the beginning and 29.9MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 21:44:43,577 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.45ms. Allocated memory is still 62.9MB. Free memory was 29.9MB in the beginning and 28.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 21:44:43,578 INFO L158 Benchmark]: Boogie Preprocessor took 41.37ms. Allocated memory is still 62.9MB. Free memory was 28.4MB in the beginning and 27.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 21:44:43,578 INFO L158 Benchmark]: RCFGBuilder took 285.74ms. Allocated memory was 62.9MB in the beginning and 86.0MB in the end (delta: 23.1MB). Free memory was 27.1MB in the beginning and 56.1MB in the end (delta: -28.9MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2023-08-30 21:44:43,579 INFO L158 Benchmark]: TraceAbstraction took 9056.16ms. Allocated memory was 86.0MB in the beginning and 151.0MB in the end (delta: 65.0MB). Free memory was 55.5MB in the beginning and 115.2MB in the end (delta: -59.8MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2023-08-30 21:44:43,579 INFO L158 Benchmark]: Witness Printer took 37.62ms. Allocated memory is still 151.0MB. Free memory was 115.2MB in the beginning and 113.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 21:44:43,581 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 62.9MB. Free memory was 40.2MB in the beginning and 40.2MB in the end (delta: 49.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.29ms. Allocated memory is still 62.9MB. Free memory was 40.6MB in the beginning and 29.9MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.45ms. Allocated memory is still 62.9MB. Free memory was 29.9MB in the beginning and 28.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.37ms. Allocated memory is still 62.9MB. Free memory was 28.4MB in the beginning and 27.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 285.74ms. Allocated memory was 62.9MB in the beginning and 86.0MB in the end (delta: 23.1MB). Free memory was 27.1MB in the beginning and 56.1MB in the end (delta: -28.9MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * TraceAbstraction took 9056.16ms. Allocated memory was 86.0MB in the beginning and 151.0MB in the end (delta: 65.0MB). Free memory was 55.5MB in the beginning and 115.2MB in the end (delta: -59.8MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. * Witness Printer took 37.62ms. Allocated memory is still 151.0MB. Free memory was 115.2MB in the beginning and 113.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 70 PlacesBefore, 18 PlacesAfterwards, 69 TransitionsBefore, 13 TransitionsAfterwards, 368 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 67 TotalNumberOfCompositions, 388 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 388, independent: 388, independent conditional: 0, independent unconditional: 388, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 207, independent: 207, independent conditional: 0, independent unconditional: 207, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 388, independent: 181, independent conditional: 0, independent unconditional: 181, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 207, unknown conditional: 0, unknown unconditional: 207] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 70]: 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 5 procedures, 90 locations, 3 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: 9.0s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 673 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 523 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1771 IncrementalHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 16 mSDtfsCounter, 1771 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 285 GetRequests, 180 SyntacticMatches, 8 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=546occurred in iteration=9, InterpolantAutomatonStates: 81, 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, 2.1s InterpolantComputationTime, 265 NumberOfCodeBlocks, 265 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 331 ConstructedInterpolants, 0 QuantifiedInterpolants, 1932 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1002 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 27 InterpolantComputations, 6 PerfectInterpolantSequences, 34/77 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 21:44:43,604 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