./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/unroll-cond-5.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 b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 04:19:35,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 04:19:35,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 04:19:35,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 04:19:35,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 04:19:35,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 04:19:35,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 04:19:35,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 04:19:35,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 04:19:35,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 04:19:35,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 04:19:35,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 04:19:35,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 04:19:35,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 04:19:35,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 04:19:35,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 04:19:35,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 04:19:35,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 04:19:35,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 04:19:35,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 04:19:35,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 04:19:35,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 04:19:35,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 04:19:35,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 04:19:35,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 04:19:35,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 04:19:35,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 04:19:35,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 04:19:35,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 04:19:35,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 04:19:35,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 04:19:35,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 04:19:35,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 04:19:36,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 04:19:36,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 04:19:36,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 04:19:36,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 04:19:36,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 04:19:36,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 04:19:36,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 04:19:36,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 04:19:36,005 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 04:19:36,037 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 04:19:36,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 04:19:36,038 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 04:19:36,038 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 04:19:36,039 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 04:19:36,039 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 04:19:36,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 04:19:36,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 04:19:36,040 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 04:19:36,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 04:19:36,041 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 04:19:36,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 04:19:36,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 04:19:36,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 04:19:36,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 04:19:36,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 04:19:36,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 04:19:36,043 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 04:19:36,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 04:19:36,043 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 04:19:36,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 04:19:36,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 04:19:36,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 04:19:36,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 04:19:36,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 04:19:36,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 04:19:36,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 04:19:36,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 04:19:36,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 04:19:36,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 04:19:36,045 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 04:19:36,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 04:19:36,046 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 04:19:36,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 04:19:36,046 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 04:19:36,046 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 04:19:36,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 04:19:36,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 04:19:36,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 04:19:36,389 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 04:19:36,390 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 04:19:36,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c [2023-08-31 04:19:37,607 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 04:19:37,833 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 04:19:37,833 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c [2023-08-31 04:19:37,839 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc0689bda/e7fe2912241141ae9ccb1660ad4601cb/FLAGf21a5a9a6 [2023-08-31 04:19:37,851 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc0689bda/e7fe2912241141ae9ccb1660ad4601cb [2023-08-31 04:19:37,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 04:19:37,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 04:19:37,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 04:19:37,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 04:19:37,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 04:19:37,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 04:19:37" (1/1) ... [2023-08-31 04:19:37,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36090375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:19:37, skipping insertion in model container [2023-08-31 04:19:37,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 04:19:37" (1/1) ... [2023-08-31 04:19:37,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 04:19:37,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 04:19:38,058 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/unroll-cond-5.wvr.c[2975,2988] [2023-08-31 04:19:38,073 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 04:19:38,082 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 04:19:38,119 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/unroll-cond-5.wvr.c[2975,2988] [2023-08-31 04:19:38,131 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 04:19:38,147 INFO L208 MainTranslator]: Completed translation [2023-08-31 04:19:38,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:19:38 WrapperNode [2023-08-31 04:19:38,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 04:19:38,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 04:19:38,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 04:19:38,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 04:19:38,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:19:38" (1/1) ... [2023-08-31 04:19:38,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:19:38" (1/1) ... [2023-08-31 04:19:38,226 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 207 [2023-08-31 04:19:38,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 04:19:38,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 04:19:38,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 04:19:38,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 04:19:38,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:19:38" (1/1) ... [2023-08-31 04:19:38,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:19:38" (1/1) ... [2023-08-31 04:19:38,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:19:38" (1/1) ... [2023-08-31 04:19:38,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:19:38" (1/1) ... [2023-08-31 04:19:38,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:19:38" (1/1) ... [2023-08-31 04:19:38,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:19:38" (1/1) ... [2023-08-31 04:19:38,263 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:19:38" (1/1) ... [2023-08-31 04:19:38,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:19:38" (1/1) ... [2023-08-31 04:19:38,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 04:19:38,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 04:19:38,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 04:19:38,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 04:19:38,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:19:38" (1/1) ... [2023-08-31 04:19:38,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 04:19:38,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:19:38,310 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 04:19:38,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 04:19:38,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 04:19:38,349 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 04:19:38,349 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 04:19:38,349 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 04:19:38,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 04:19:38,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 04:19:38,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 04:19:38,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 04:19:38,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 04:19:38,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 04:19:38,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 04:19:38,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 04:19:38,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 04:19:38,353 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 04:19:38,488 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 04:19:38,490 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 04:19:38,798 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 04:19:38,806 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 04:19:38,806 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-31 04:19:38,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 04:19:38 BoogieIcfgContainer [2023-08-31 04:19:38,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 04:19:38,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 04:19:38,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 04:19:38,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 04:19:38,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 04:19:37" (1/3) ... [2023-08-31 04:19:38,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe92054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 04:19:38, skipping insertion in model container [2023-08-31 04:19:38,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:19:38" (2/3) ... [2023-08-31 04:19:38,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe92054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 04:19:38, skipping insertion in model container [2023-08-31 04:19:38,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 04:19:38" (3/3) ... [2023-08-31 04:19:38,815 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2023-08-31 04:19:38,822 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 04:19:38,830 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 04:19:38,830 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 04:19:38,831 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 04:19:38,986 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 04:19:39,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 250 transitions, 516 flow [2023-08-31 04:19:39,142 INFO L130 PetriNetUnfolder]: 24/248 cut-off events. [2023-08-31 04:19:39,142 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 04:19:39,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 248 events. 24/248 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 480 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 161. Up to 2 conditions per place. [2023-08-31 04:19:39,149 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 250 transitions, 516 flow [2023-08-31 04:19:39,160 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 240 transitions, 492 flow [2023-08-31 04:19:39,164 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 04:19:39,180 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 240 transitions, 492 flow [2023-08-31 04:19:39,188 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 240 transitions, 492 flow [2023-08-31 04:19:39,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 240 transitions, 492 flow [2023-08-31 04:19:39,227 INFO L130 PetriNetUnfolder]: 24/240 cut-off events. [2023-08-31 04:19:39,227 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 04:19:39,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 240 events. 24/240 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 460 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 161. Up to 2 conditions per place. [2023-08-31 04:19:39,233 INFO L119 LiptonReduction]: Number of co-enabled transitions 6892 [2023-08-31 04:19:58,374 WARN L222 SmtUtils]: Spent 7.72s on a formula simplification. DAG size of input: 203 DAG size of output: 201 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 04:20:01,683 INFO L134 LiptonReduction]: Checked pairs total: 6654 [2023-08-31 04:20:01,684 INFO L136 LiptonReduction]: Total number of compositions: 300 [2023-08-31 04:20:01,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 04:20:01,700 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;@83ad0be, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 04:20:01,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-31 04:20:01,707 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-08-31 04:20:01,707 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 04:20:01,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:20:01,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:20:01,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:20:01,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:20:01,713 INFO L85 PathProgramCache]: Analyzing trace with hash 678661713, now seen corresponding path program 1 times [2023-08-31 04:20:01,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:20:01,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540519862] [2023-08-31 04:20:01,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:20:01,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:20:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:20:02,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:20:02,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:20:02,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540519862] [2023-08-31 04:20:02,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540519862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:20:02,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:20:02,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 04:20:02,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329359622] [2023-08-31 04:20:02,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:20:02,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 04:20:02,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:20:02,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 04:20:02,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 04:20:02,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 550 [2023-08-31 04:20:02,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:02,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:20:02,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 550 [2023-08-31 04:20:02,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:20:02,347 INFO L130 PetriNetUnfolder]: 45/80 cut-off events. [2023-08-31 04:20:02,348 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 04:20:02,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 80 events. 45/80 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 189 event pairs, 18 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 120. Up to 76 conditions per place. [2023-08-31 04:20:02,350 INFO L137 encePairwiseOnDemand]: 547/550 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-08-31 04:20:02,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 80 flow [2023-08-31 04:20:02,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 04:20:02,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 04:20:02,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2023-08-31 04:20:02,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41393939393939394 [2023-08-31 04:20:02,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2023-08-31 04:20:02,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2023-08-31 04:20:02,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:20:02,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2023-08-31 04:20:02,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:02,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:02,390 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:02,392 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 683 transitions. [2023-08-31 04:20:02,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 80 flow [2023-08-31 04:20:02,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 04:20:02,396 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2023-08-31 04:20:02,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2023-08-31 04:20:02,401 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2023-08-31 04:20:02,402 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2023-08-31 04:20:02,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:02,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:20:02,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:20:02,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 04:20:02,404 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:20:02,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:20:02,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1026241164, now seen corresponding path program 1 times [2023-08-31 04:20:02,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:20:02,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70881903] [2023-08-31 04:20:02,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:20:02,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:20:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:20:02,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 04:20:02,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:20:02,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70881903] [2023-08-31 04:20:02,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70881903] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:20:02,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:20:02,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 04:20:02,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080117954] [2023-08-31 04:20:02,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:20:02,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 04:20:02,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:20:02,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 04:20:02,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 04:20:03,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 550 [2023-08-31 04:20:03,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 212.0) internal successors, (1060), 5 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:03,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:20:03,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 550 [2023-08-31 04:20:03,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:20:04,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-31 04:20:04,416 INFO L130 PetriNetUnfolder]: 72/135 cut-off events. [2023-08-31 04:20:04,417 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 04:20:04,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 135 events. 72/135 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 368 event pairs, 24 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 274. Up to 77 conditions per place. [2023-08-31 04:20:04,418 INFO L137 encePairwiseOnDemand]: 544/550 looper letters, 35 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-08-31 04:20:04,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 40 transitions, 179 flow [2023-08-31 04:20:04,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 04:20:04,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 04:20:04,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1085 transitions. [2023-08-31 04:20:04,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39454545454545453 [2023-08-31 04:20:04,421 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1085 transitions. [2023-08-31 04:20:04,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1085 transitions. [2023-08-31 04:20:04,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:20:04,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1085 transitions. [2023-08-31 04:20:04,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:04,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:04,430 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:04,430 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 5 states and 1085 transitions. [2023-08-31 04:20:04,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 40 transitions, 179 flow [2023-08-31 04:20:04,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 40 transitions, 175 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 04:20:04,432 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 82 flow [2023-08-31 04:20:04,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-08-31 04:20:04,433 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 5 predicate places. [2023-08-31 04:20:04,433 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 82 flow [2023-08-31 04:20:04,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 212.0) internal successors, (1060), 5 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:04,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:20:04,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:20:04,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 04:20:04,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:20:04,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:20:04,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1210956036, now seen corresponding path program 2 times [2023-08-31 04:20:04,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:20:04,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537507192] [2023-08-31 04:20:04,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:20:04,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:20:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:20:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 04:20:04,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:20:04,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537507192] [2023-08-31 04:20:04,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537507192] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:20:04,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:20:04,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 04:20:04,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786287465] [2023-08-31 04:20:04,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:20:04,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 04:20:04,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:20:04,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 04:20:04,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 04:20:04,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 550 [2023-08-31 04:20:04,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:04,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:20:04,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 550 [2023-08-31 04:20:04,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:20:04,945 INFO L130 PetriNetUnfolder]: 111/208 cut-off events. [2023-08-31 04:20:04,945 INFO L131 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2023-08-31 04:20:04,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 208 events. 111/208 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 647 event pairs, 42 based on Foata normal form. 2/169 useless extension candidates. Maximal degree in co-relation 584. Up to 133 conditions per place. [2023-08-31 04:20:04,947 INFO L137 encePairwiseOnDemand]: 544/550 looper letters, 37 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2023-08-31 04:20:04,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 44 transitions, 252 flow [2023-08-31 04:20:04,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 04:20:04,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 04:20:04,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1096 transitions. [2023-08-31 04:20:04,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39854545454545454 [2023-08-31 04:20:04,950 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1096 transitions. [2023-08-31 04:20:04,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1096 transitions. [2023-08-31 04:20:04,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:20:04,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1096 transitions. [2023-08-31 04:20:04,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 219.2) internal successors, (1096), 5 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:04,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:04,959 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:04,960 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 82 flow. Second operand 5 states and 1096 transitions. [2023-08-31 04:20:04,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 44 transitions, 252 flow [2023-08-31 04:20:04,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 44 transitions, 235 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-31 04:20:04,964 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 124 flow [2023-08-31 04:20:04,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-31 04:20:04,966 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 11 predicate places. [2023-08-31 04:20:04,966 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 124 flow [2023-08-31 04:20:04,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:04,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:20:04,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:20:04,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 04:20:04,968 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:20:04,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:20:04,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1449066184, now seen corresponding path program 3 times [2023-08-31 04:20:04,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:20:04,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646826193] [2023-08-31 04:20:04,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:20:04,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:20:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:20:05,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 04:20:05,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:20:05,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646826193] [2023-08-31 04:20:05,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646826193] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:20:05,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:20:05,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 04:20:05,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35091972] [2023-08-31 04:20:05,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:20:05,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 04:20:05,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:20:05,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 04:20:05,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 04:20:05,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 550 [2023-08-31 04:20:05,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:05,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:20:05,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 550 [2023-08-31 04:20:05,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:20:05,517 INFO L130 PetriNetUnfolder]: 121/224 cut-off events. [2023-08-31 04:20:05,517 INFO L131 PetriNetUnfolder]: For 303/303 co-relation queries the response was YES. [2023-08-31 04:20:05,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 224 events. 121/224 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 734 event pairs, 44 based on Foata normal form. 4/201 useless extension candidates. Maximal degree in co-relation 764. Up to 121 conditions per place. [2023-08-31 04:20:05,521 INFO L137 encePairwiseOnDemand]: 544/550 looper letters, 37 selfloop transitions, 12 changer transitions 0/49 dead transitions. [2023-08-31 04:20:05,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 49 transitions, 321 flow [2023-08-31 04:20:05,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 04:20:05,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 04:20:05,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1081 transitions. [2023-08-31 04:20:05,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3930909090909091 [2023-08-31 04:20:05,524 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1081 transitions. [2023-08-31 04:20:05,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1081 transitions. [2023-08-31 04:20:05,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:20:05,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1081 transitions. [2023-08-31 04:20:05,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 216.2) internal successors, (1081), 5 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:05,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:05,537 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:05,537 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 124 flow. Second operand 5 states and 1081 transitions. [2023-08-31 04:20:05,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 49 transitions, 321 flow [2023-08-31 04:20:05,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 49 transitions, 297 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-31 04:20:05,542 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 203 flow [2023-08-31 04:20:05,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2023-08-31 04:20:05,543 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 17 predicate places. [2023-08-31 04:20:05,544 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 203 flow [2023-08-31 04:20:05,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:05,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:20:05,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:20:05,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 04:20:05,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:20:05,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:20:05,546 INFO L85 PathProgramCache]: Analyzing trace with hash 2041421108, now seen corresponding path program 4 times [2023-08-31 04:20:05,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:20:05,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577765632] [2023-08-31 04:20:05,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:20:05,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:20:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:20:05,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 04:20:05,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:20:05,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577765632] [2023-08-31 04:20:05,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577765632] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:20:05,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:20:05,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 04:20:05,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253783962] [2023-08-31 04:20:05,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:20:05,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 04:20:05,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:20:05,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 04:20:05,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-31 04:20:05,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 550 [2023-08-31 04:20:05,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:05,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:20:05,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 550 [2023-08-31 04:20:05,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:20:05,986 INFO L130 PetriNetUnfolder]: 117/220 cut-off events. [2023-08-31 04:20:05,986 INFO L131 PetriNetUnfolder]: For 545/545 co-relation queries the response was YES. [2023-08-31 04:20:05,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 220 events. 117/220 cut-off events. For 545/545 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 704 event pairs, 50 based on Foata normal form. 4/197 useless extension candidates. Maximal degree in co-relation 824. Up to 177 conditions per place. [2023-08-31 04:20:05,988 INFO L137 encePairwiseOnDemand]: 544/550 looper letters, 32 selfloop transitions, 15 changer transitions 0/47 dead transitions. [2023-08-31 04:20:05,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 375 flow [2023-08-31 04:20:05,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 04:20:05,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 04:20:05,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1075 transitions. [2023-08-31 04:20:05,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2023-08-31 04:20:05,991 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1075 transitions. [2023-08-31 04:20:05,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1075 transitions. [2023-08-31 04:20:05,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:20:05,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1075 transitions. [2023-08-31 04:20:06,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:06,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:06,006 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:06,006 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 203 flow. Second operand 5 states and 1075 transitions. [2023-08-31 04:20:06,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 375 flow [2023-08-31 04:20:06,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 362 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-31 04:20:06,009 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 296 flow [2023-08-31 04:20:06,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-08-31 04:20:06,010 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 22 predicate places. [2023-08-31 04:20:06,010 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 296 flow [2023-08-31 04:20:06,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:06,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:20:06,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:20:06,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 04:20:06,011 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:20:06,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:20:06,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1949255900, now seen corresponding path program 5 times [2023-08-31 04:20:06,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:20:06,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500283138] [2023-08-31 04:20:06,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:20:06,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:20:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:20:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 04:20:06,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:20:06,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500283138] [2023-08-31 04:20:06,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500283138] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:20:06,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:20:06,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 04:20:06,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796702663] [2023-08-31 04:20:06,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:20:06,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 04:20:06,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:20:06,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 04:20:06,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-31 04:20:06,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 550 [2023-08-31 04:20:06,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:06,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:20:06,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 550 [2023-08-31 04:20:06,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:20:06,417 INFO L130 PetriNetUnfolder]: 118/223 cut-off events. [2023-08-31 04:20:06,418 INFO L131 PetriNetUnfolder]: For 638/638 co-relation queries the response was YES. [2023-08-31 04:20:06,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 223 events. 118/223 cut-off events. For 638/638 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 737 event pairs, 38 based on Foata normal form. 2/198 useless extension candidates. Maximal degree in co-relation 934. Up to 123 conditions per place. [2023-08-31 04:20:06,419 INFO L137 encePairwiseOnDemand]: 544/550 looper letters, 38 selfloop transitions, 14 changer transitions 0/52 dead transitions. [2023-08-31 04:20:06,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 442 flow [2023-08-31 04:20:06,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 04:20:06,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 04:20:06,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1094 transitions. [2023-08-31 04:20:06,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978181818181818 [2023-08-31 04:20:06,423 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1094 transitions. [2023-08-31 04:20:06,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1094 transitions. [2023-08-31 04:20:06,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:20:06,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1094 transitions. [2023-08-31 04:20:06,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 218.8) internal successors, (1094), 5 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:06,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:06,430 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:06,430 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 296 flow. Second operand 5 states and 1094 transitions. [2023-08-31 04:20:06,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 442 flow [2023-08-31 04:20:06,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 388 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-08-31 04:20:06,434 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 282 flow [2023-08-31 04:20:06,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-08-31 04:20:06,435 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 25 predicate places. [2023-08-31 04:20:06,435 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 282 flow [2023-08-31 04:20:06,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:06,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:20:06,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:20:06,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 04:20:06,437 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:20:06,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:20:06,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1265068822, now seen corresponding path program 6 times [2023-08-31 04:20:06,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:20:06,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095609773] [2023-08-31 04:20:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:20:06,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:20:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:20:06,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 04:20:06,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:20:06,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095609773] [2023-08-31 04:20:06,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095609773] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:20:06,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:20:06,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 04:20:06,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543881408] [2023-08-31 04:20:06,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:20:06,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 04:20:06,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:20:06,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 04:20:06,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 04:20:06,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 550 [2023-08-31 04:20:06,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:06,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:20:06,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 550 [2023-08-31 04:20:06,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:20:06,891 INFO L130 PetriNetUnfolder]: 117/216 cut-off events. [2023-08-31 04:20:06,891 INFO L131 PetriNetUnfolder]: For 674/674 co-relation queries the response was YES. [2023-08-31 04:20:06,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 216 events. 117/216 cut-off events. For 674/674 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 677 event pairs, 49 based on Foata normal form. 2/191 useless extension candidates. Maximal degree in co-relation 870. Up to 170 conditions per place. [2023-08-31 04:20:06,893 INFO L137 encePairwiseOnDemand]: 544/550 looper letters, 34 selfloop transitions, 15 changer transitions 0/49 dead transitions. [2023-08-31 04:20:06,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 414 flow [2023-08-31 04:20:06,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 04:20:06,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 04:20:06,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1090 transitions. [2023-08-31 04:20:06,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39636363636363636 [2023-08-31 04:20:06,898 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1090 transitions. [2023-08-31 04:20:06,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1090 transitions. [2023-08-31 04:20:06,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:20:06,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1090 transitions. [2023-08-31 04:20:06,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:06,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:06,905 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:06,905 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 282 flow. Second operand 5 states and 1090 transitions. [2023-08-31 04:20:06,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 414 flow [2023-08-31 04:20:06,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 380 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-31 04:20:06,908 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 294 flow [2023-08-31 04:20:06,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-08-31 04:20:06,909 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 27 predicate places. [2023-08-31 04:20:06,909 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 294 flow [2023-08-31 04:20:06,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:06,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:20:06,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:20:06,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 04:20:06,910 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:20:06,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:20:06,911 INFO L85 PathProgramCache]: Analyzing trace with hash -29277619, now seen corresponding path program 1 times [2023-08-31 04:20:06,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:20:06,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474873458] [2023-08-31 04:20:06,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:20:06,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:20:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:20:07,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 04:20:07,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:20:07,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474873458] [2023-08-31 04:20:07,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474873458] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 04:20:07,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768222114] [2023-08-31 04:20:07,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:20:07,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:20:07,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:20:07,233 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 04:20:07,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 04:20:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:20:07,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-31 04:20:07,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 04:20:09,515 INFO L321 Elim1Store]: treesize reduction 294, result has 7.8 percent of original size [2023-08-31 04:20:09,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 14 new quantified variables, introduced 36 case distinctions, treesize of input 537 treesize of output 386 [2023-08-31 04:20:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:20:16,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 04:20:34,471 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 04:20:34,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 329 treesize of output 213 [2023-08-31 04:20:35,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:20:35,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768222114] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 04:20:35,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 04:20:35,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2023-08-31 04:20:35,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313110578] [2023-08-31 04:20:35,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 04:20:35,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-31 04:20:35,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:20:35,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-31 04:20:35,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-08-31 04:20:37,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 550 [2023-08-31 04:20:37,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 294 flow. Second operand has 16 states, 16 states have (on average 167.0) internal successors, (2672), 16 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:37,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:20:37,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 550 [2023-08-31 04:20:37,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:20:41,122 INFO L130 PetriNetUnfolder]: 297/530 cut-off events. [2023-08-31 04:20:41,123 INFO L131 PetriNetUnfolder]: For 1701/1701 co-relation queries the response was YES. [2023-08-31 04:20:41,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 530 events. 297/530 cut-off events. For 1701/1701 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2219 event pairs, 24 based on Foata normal form. 4/450 useless extension candidates. Maximal degree in co-relation 1447. Up to 189 conditions per place. [2023-08-31 04:20:41,126 INFO L137 encePairwiseOnDemand]: 540/550 looper letters, 63 selfloop transitions, 37 changer transitions 58/158 dead transitions. [2023-08-31 04:20:41,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 158 transitions, 1339 flow [2023-08-31 04:20:41,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-31 04:20:41,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-31 04:20:41,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3404 transitions. [2023-08-31 04:20:41,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3094545454545455 [2023-08-31 04:20:41,136 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3404 transitions. [2023-08-31 04:20:41,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3404 transitions. [2023-08-31 04:20:41,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:20:41,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3404 transitions. [2023-08-31 04:20:41,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 170.2) internal successors, (3404), 20 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:41,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 550.0) internal successors, (11550), 21 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:41,159 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 550.0) internal successors, (11550), 21 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:41,159 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 294 flow. Second operand 20 states and 3404 transitions. [2023-08-31 04:20:41,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 158 transitions, 1339 flow [2023-08-31 04:20:41,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 158 transitions, 1269 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-31 04:20:41,167 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 565 flow [2023-08-31 04:20:41,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=565, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2023-08-31 04:20:41,170 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 52 predicate places. [2023-08-31 04:20:41,170 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 565 flow [2023-08-31 04:20:41,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 167.0) internal successors, (2672), 16 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:20:41,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:20:41,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:20:41,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-31 04:20:41,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:20:41,379 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:20:41,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:20:41,380 INFO L85 PathProgramCache]: Analyzing trace with hash -418800640, now seen corresponding path program 1 times [2023-08-31 04:20:41,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:20:41,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327890590] [2023-08-31 04:20:41,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:20:41,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:20:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:20:41,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 04:20:41,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:20:41,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327890590] [2023-08-31 04:20:41,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327890590] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 04:20:41,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514181977] [2023-08-31 04:20:41,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:20:41,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:20:41,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:20:41,670 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 04:20:41,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 04:20:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:20:41,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-31 04:20:41,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 04:20:41,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 04:20:41,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 04:20:41,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 04:20:42,492 INFO L321 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2023-08-31 04:20:42,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 343 treesize of output 320 [2023-08-31 04:20:42,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:20:42,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 04:20:57,562 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 04:20:57,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 464 treesize of output 272 [2023-08-31 04:20:57,624 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 04:20:57,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 1536 treesize of output 1392 [2023-08-31 04:20:57,732 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 04:20:57,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 250 treesize of output 276 [2023-08-31 04:21:02,504 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 04:21:02,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 345 treesize of output 269 [2023-08-31 04:21:03,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:21:03,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514181977] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 04:21:03,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 04:21:03,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 22 [2023-08-31 04:21:03,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413189798] [2023-08-31 04:21:03,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 04:21:03,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-31 04:21:03,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:21:03,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-31 04:21:03,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=370, Unknown=3, NotChecked=0, Total=462 [2023-08-31 04:21:08,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 04:21:16,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 04:21:17,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 550 [2023-08-31 04:21:17,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 565 flow. Second operand has 22 states, 22 states have (on average 129.1818181818182) internal successors, (2842), 22 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:21:17,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:21:17,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 550 [2023-08-31 04:21:17,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:21:32,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-31 04:21:36,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 04:21:38,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 04:21:50,595 WARN L222 SmtUtils]: Spent 12.34s on a formula simplification. DAG size of input: 82 DAG size of output: 79 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 04:22:01,125 WARN L222 SmtUtils]: Spent 10.37s on a formula simplification. DAG size of input: 159 DAG size of output: 147 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 04:22:07,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-31 04:22:21,251 WARN L222 SmtUtils]: Spent 12.22s on a formula simplification. DAG size of input: 79 DAG size of output: 74 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 04:22:23,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-31 04:22:26,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 04:22:29,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-31 04:22:31,820 INFO L130 PetriNetUnfolder]: 562/1005 cut-off events. [2023-08-31 04:22:31,820 INFO L131 PetriNetUnfolder]: For 3357/3357 co-relation queries the response was YES. [2023-08-31 04:22:31,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4242 conditions, 1005 events. 562/1005 cut-off events. For 3357/3357 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5023 event pairs, 29 based on Foata normal form. 19/827 useless extension candidates. Maximal degree in co-relation 4176. Up to 353 conditions per place. [2023-08-31 04:22:31,826 INFO L137 encePairwiseOnDemand]: 539/550 looper letters, 147 selfloop transitions, 97 changer transitions 66/310 dead transitions. [2023-08-31 04:22:31,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 310 transitions, 2486 flow [2023-08-31 04:22:31,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-31 04:22:31,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-31 04:22:31,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 5343 transitions. [2023-08-31 04:22:31,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24286363636363636 [2023-08-31 04:22:31,856 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 5343 transitions. [2023-08-31 04:22:31,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 5343 transitions. [2023-08-31 04:22:31,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:22:31,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 5343 transitions. [2023-08-31 04:22:31,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 133.575) internal successors, (5343), 40 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:22:31,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 550.0) internal successors, (22550), 41 states have internal predecessors, (22550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:22:31,894 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 550.0) internal successors, (22550), 41 states have internal predecessors, (22550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:22:31,894 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 565 flow. Second operand 40 states and 5343 transitions. [2023-08-31 04:22:31,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 310 transitions, 2486 flow [2023-08-31 04:22:31,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 310 transitions, 2103 flow, removed 163 selfloop flow, removed 7 redundant places. [2023-08-31 04:22:31,915 INFO L231 Difference]: Finished difference. Result has 115 places, 134 transitions, 1272 flow [2023-08-31 04:22:31,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=1272, PETRI_PLACES=115, PETRI_TRANSITIONS=134} [2023-08-31 04:22:31,916 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 94 predicate places. [2023-08-31 04:22:31,917 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 134 transitions, 1272 flow [2023-08-31 04:22:31,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 129.1818181818182) internal successors, (2842), 22 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:22:31,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:22:31,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:22:31,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 04:22:32,123 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,SelfDestructingSolverStorable8 [2023-08-31 04:22:32,123 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:22:32,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:22:32,124 INFO L85 PathProgramCache]: Analyzing trace with hash -384436778, now seen corresponding path program 2 times [2023-08-31 04:22:32,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:22:32,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990408786] [2023-08-31 04:22:32,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:22:32,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:22:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:22:32,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 04:22:32,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:22:32,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990408786] [2023-08-31 04:22:32,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990408786] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 04:22:32,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523170223] [2023-08-31 04:22:32,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 04:22:32,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:22:32,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:22:32,321 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 04:22:32,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 04:22:32,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 04:22:32,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 04:22:32,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-31 04:22:32,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 04:22:32,954 INFO L321 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2023-08-31 04:22:32,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 343 treesize of output 320 [2023-08-31 04:22:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:22:33,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 04:31:35,676 WARN L222 SmtUtils]: Spent 8.86m on a formula simplification. DAG size of input: 5617 DAG size of output: 4993 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15