./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.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 f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 20:40:52,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 20:40:52,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 20:40:52,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 20:40:52,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 20:40:52,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 20:40:52,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 20:40:52,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 20:40:52,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 20:40:52,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 20:40:52,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 20:40:52,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 20:40:52,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 20:40:52,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 20:40:52,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 20:40:52,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 20:40:52,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 20:40:53,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 20:40:53,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 20:40:53,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 20:40:53,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 20:40:53,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 20:40:53,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 20:40:53,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 20:40:53,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 20:40:53,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 20:40:53,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 20:40:53,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 20:40:53,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 20:40:53,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 20:40:53,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 20:40:53,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 20:40:53,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 20:40:53,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 20:40:53,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 20:40:53,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 20:40:53,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 20:40:53,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 20:40:53,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 20:40:53,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 20:40:53,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 20:40:53,020 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 20:40:53,041 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 20:40:53,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 20:40:53,042 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 20:40:53,042 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 20:40:53,042 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 20:40:53,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 20:40:53,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 20:40:53,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 20:40:53,044 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 20:40:53,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 20:40:53,044 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 20:40:53,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 20:40:53,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 20:40:53,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 20:40:53,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 20:40:53,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 20:40:53,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 20:40:53,046 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 20:40:53,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 20:40:53,046 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 20:40:53,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 20:40:53,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 20:40:53,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 20:40:53,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 20:40:53,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 20:40:53,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 20:40:53,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 20:40:53,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 20:40:53,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 20:40:53,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 20:40:53,049 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 20:40:53,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 20:40:53,049 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 20:40:53,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 20:40:53,050 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 20:40:53,050 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 20:40:53,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 20:40:53,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 20:40:53,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 20:40:53,372 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 20:40:53,373 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 20:40:53,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-08-30 20:40:54,615 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 20:40:54,843 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 20:40:54,843 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-08-30 20:40:54,856 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43a0cf856/5ba382ff7f3e45ed846734d7e22bba5b/FLAG8c9beedec [2023-08-30 20:40:54,867 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43a0cf856/5ba382ff7f3e45ed846734d7e22bba5b [2023-08-30 20:40:54,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 20:40:54,871 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 20:40:54,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 20:40:54,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 20:40:54,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 20:40:54,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:40:54" (1/1) ... [2023-08-30 20:40:54,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a5e75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:40:54, skipping insertion in model container [2023-08-30 20:40:54,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:40:54" (1/1) ... [2023-08-30 20:40:54,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 20:40:54,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 20:40:55,091 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2023-08-30 20:40:55,110 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 20:40:55,120 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 20:40:55,164 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2023-08-30 20:40:55,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 20:40:55,186 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 20:40:55,187 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 20:40:55,193 INFO L208 MainTranslator]: Completed translation [2023-08-30 20:40:55,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:40:55 WrapperNode [2023-08-30 20:40:55,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 20:40:55,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 20:40:55,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 20:40:55,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 20:40:55,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:40:55" (1/1) ... [2023-08-30 20:40:55,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:40:55" (1/1) ... [2023-08-30 20:40:55,265 INFO L138 Inliner]: procedures = 27, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 354 [2023-08-30 20:40:55,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 20:40:55,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 20:40:55,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 20:40:55,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 20:40:55,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:40:55" (1/1) ... [2023-08-30 20:40:55,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:40:55" (1/1) ... [2023-08-30 20:40:55,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:40:55" (1/1) ... [2023-08-30 20:40:55,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:40:55" (1/1) ... [2023-08-30 20:40:55,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:40:55" (1/1) ... [2023-08-30 20:40:55,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:40:55" (1/1) ... [2023-08-30 20:40:55,366 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:40:55" (1/1) ... [2023-08-30 20:40:55,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:40:55" (1/1) ... [2023-08-30 20:40:55,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 20:40:55,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 20:40:55,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 20:40:55,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 20:40:55,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:40:55" (1/1) ... [2023-08-30 20:40:55,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 20:40:55,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:40:55,411 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 20:40:55,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 20:40:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 20:40:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 20:40:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 20:40:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 20:40:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 20:40:55,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 20:40:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 20:40:55,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 20:40:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 20:40:55,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 20:40:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 20:40:55,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 20:40:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 20:40:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 20:40:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 20:40:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 20:40:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 20:40:55,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 20:40:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 20:40:55,455 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 20:40:55,607 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 20:40:55,609 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 20:40:55,986 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 20:40:56,172 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 20:40:56,172 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-30 20:40:56,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:40:56 BoogieIcfgContainer [2023-08-30 20:40:56,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 20:40:56,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 20:40:56,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 20:40:56,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 20:40:56,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:40:54" (1/3) ... [2023-08-30 20:40:56,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bd9e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:40:56, skipping insertion in model container [2023-08-30 20:40:56,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:40:55" (2/3) ... [2023-08-30 20:40:56,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bd9e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:40:56, skipping insertion in model container [2023-08-30 20:40:56,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:40:56" (3/3) ... [2023-08-30 20:40:56,184 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2023-08-30 20:40:56,191 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 20:40:56,199 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 20:40:56,199 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 20:40:56,200 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 20:40:56,302 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 20:40:56,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 251 transitions, 534 flow [2023-08-30 20:40:56,432 INFO L130 PetriNetUnfolder]: 22/247 cut-off events. [2023-08-30 20:40:56,433 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 20:40:56,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 247 events. 22/247 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 132 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 210. Up to 2 conditions per place. [2023-08-30 20:40:56,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 251 transitions, 534 flow [2023-08-30 20:40:56,445 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 235 transitions, 494 flow [2023-08-30 20:40:56,448 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 20:40:56,456 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 235 transitions, 494 flow [2023-08-30 20:40:56,459 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 235 transitions, 494 flow [2023-08-30 20:40:56,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 235 transitions, 494 flow [2023-08-30 20:40:56,500 INFO L130 PetriNetUnfolder]: 22/235 cut-off events. [2023-08-30 20:40:56,500 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 20:40:56,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 235 events. 22/235 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 131 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 210. Up to 2 conditions per place. [2023-08-30 20:40:56,503 INFO L119 LiptonReduction]: Number of co-enabled transitions 1824 [2023-08-30 20:41:05,371 INFO L134 LiptonReduction]: Checked pairs total: 2860 [2023-08-30 20:41:05,372 INFO L136 LiptonReduction]: Total number of compositions: 238 [2023-08-30 20:41:05,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 20:41:05,389 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;@f932e76, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 20:41:05,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-30 20:41:05,398 INFO L130 PetriNetUnfolder]: 7/36 cut-off events. [2023-08-30 20:41:05,398 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 20:41:05,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:41:05,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:41:05,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 20:41:05,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:41:05,404 INFO L85 PathProgramCache]: Analyzing trace with hash 570355702, now seen corresponding path program 1 times [2023-08-30 20:41:05,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:41:05,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192454298] [2023-08-30 20:41:05,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:41:05,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:41:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:41:06,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:41:06,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:41:06,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192454298] [2023-08-30 20:41:06,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192454298] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 20:41:06,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 20:41:06,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 20:41:06,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844191152] [2023-08-30 20:41:06,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:41:06,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 20:41:06,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:41:06,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 20:41:06,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 20:41:06,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 489 [2023-08-30 20:41:06,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:06,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:41:06,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 489 [2023-08-30 20:41:06,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:41:06,444 INFO L130 PetriNetUnfolder]: 1616/2218 cut-off events. [2023-08-30 20:41:06,445 INFO L131 PetriNetUnfolder]: For 145/145 co-relation queries the response was YES. [2023-08-30 20:41:06,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4414 conditions, 2218 events. 1616/2218 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 8933 event pairs, 271 based on Foata normal form. 1/1347 useless extension candidates. Maximal degree in co-relation 3411. Up to 1413 conditions per place. [2023-08-30 20:41:06,463 INFO L137 encePairwiseOnDemand]: 485/489 looper letters, 45 selfloop transitions, 3 changer transitions 1/55 dead transitions. [2023-08-30 20:41:06,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 247 flow [2023-08-30 20:41:06,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 20:41:06,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 20:41:06,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 716 transitions. [2023-08-30 20:41:06,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48807089297886846 [2023-08-30 20:41:06,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 716 transitions. [2023-08-30 20:41:06,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 716 transitions. [2023-08-30 20:41:06,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:41:06,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 716 transitions. [2023-08-30 20:41:06,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:06,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:06,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:06,506 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 98 flow. Second operand 3 states and 716 transitions. [2023-08-30 20:41:06,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 247 flow [2023-08-30 20:41:06,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 55 transitions, 221 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-30 20:41:06,515 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 101 flow [2023-08-30 20:41:06,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2023-08-30 20:41:06,521 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2023-08-30 20:41:06,523 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 101 flow [2023-08-30 20:41:06,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:06,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:41:06,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:41:06,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 20:41:06,526 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 20:41:06,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:41:06,528 INFO L85 PathProgramCache]: Analyzing trace with hash -775864851, now seen corresponding path program 1 times [2023-08-30 20:41:06,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:41:06,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475425612] [2023-08-30 20:41:06,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:41:06,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:41:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:41:06,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:41:06,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:41:06,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475425612] [2023-08-30 20:41:06,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475425612] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 20:41:06,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 20:41:06,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 20:41:06,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617360350] [2023-08-30 20:41:06,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:41:06,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 20:41:06,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:41:06,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 20:41:06,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 20:41:06,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 489 [2023-08-30 20:41:06,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:06,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:41:06,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 489 [2023-08-30 20:41:06,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:41:07,004 INFO L130 PetriNetUnfolder]: 1642/2243 cut-off events. [2023-08-30 20:41:07,005 INFO L131 PetriNetUnfolder]: For 450/450 co-relation queries the response was YES. [2023-08-30 20:41:07,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4981 conditions, 2243 events. 1642/2243 cut-off events. For 450/450 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9269 event pairs, 416 based on Foata normal form. 76/1829 useless extension candidates. Maximal degree in co-relation 1646. Up to 1400 conditions per place. [2023-08-30 20:41:07,017 INFO L137 encePairwiseOnDemand]: 486/489 looper letters, 52 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-08-30 20:41:07,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 60 transitions, 264 flow [2023-08-30 20:41:07,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 20:41:07,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 20:41:07,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 709 transitions. [2023-08-30 20:41:07,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4832992501704158 [2023-08-30 20:41:07,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 709 transitions. [2023-08-30 20:41:07,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 709 transitions. [2023-08-30 20:41:07,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:41:07,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 709 transitions. [2023-08-30 20:41:07,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:07,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:07,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:07,027 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 101 flow. Second operand 3 states and 709 transitions. [2023-08-30 20:41:07,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 60 transitions, 264 flow [2023-08-30 20:41:07,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 20:41:07,030 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 112 flow [2023-08-30 20:41:07,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-08-30 20:41:07,030 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-08-30 20:41:07,031 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 112 flow [2023-08-30 20:41:07,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:07,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:41:07,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:41:07,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 20:41:07,032 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 20:41:07,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:41:07,034 INFO L85 PathProgramCache]: Analyzing trace with hash -2096498108, now seen corresponding path program 1 times [2023-08-30 20:41:07,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:41:07,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204997264] [2023-08-30 20:41:07,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:41:07,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:41:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:41:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:41:07,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:41:07,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204997264] [2023-08-30 20:41:07,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204997264] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 20:41:07,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 20:41:07,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 20:41:07,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79169827] [2023-08-30 20:41:07,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:41:07,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 20:41:07,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:41:07,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 20:41:07,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 20:41:07,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 489 [2023-08-30 20:41:07,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:07,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:41:07,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 489 [2023-08-30 20:41:07,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:41:07,499 INFO L130 PetriNetUnfolder]: 1670/2393 cut-off events. [2023-08-30 20:41:07,500 INFO L131 PetriNetUnfolder]: For 1007/1007 co-relation queries the response was YES. [2023-08-30 20:41:07,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5644 conditions, 2393 events. 1670/2393 cut-off events. For 1007/1007 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11221 event pairs, 475 based on Foata normal form. 92/2262 useless extension candidates. Maximal degree in co-relation 2824. Up to 1587 conditions per place. [2023-08-30 20:41:07,511 INFO L137 encePairwiseOnDemand]: 486/489 looper letters, 56 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-08-30 20:41:07,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 64 transitions, 298 flow [2023-08-30 20:41:07,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 20:41:07,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 20:41:07,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 711 transitions. [2023-08-30 20:41:07,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48466257668711654 [2023-08-30 20:41:07,514 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 711 transitions. [2023-08-30 20:41:07,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 711 transitions. [2023-08-30 20:41:07,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:41:07,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 711 transitions. [2023-08-30 20:41:07,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:07,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:07,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:07,520 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 112 flow. Second operand 3 states and 711 transitions. [2023-08-30 20:41:07,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 64 transitions, 298 flow [2023-08-30 20:41:07,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 295 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 20:41:07,525 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 124 flow [2023-08-30 20:41:07,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-08-30 20:41:07,526 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2023-08-30 20:41:07,529 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 124 flow [2023-08-30 20:41:07,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:07,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:41:07,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:41:07,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 20:41:07,530 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 20:41:07,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:41:07,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1042939980, now seen corresponding path program 1 times [2023-08-30 20:41:07,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:41:07,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486260723] [2023-08-30 20:41:07,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:41:07,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:41:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:41:07,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:41:07,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:41:07,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486260723] [2023-08-30 20:41:07,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486260723] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 20:41:07,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 20:41:07,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 20:41:07,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556166087] [2023-08-30 20:41:07,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:41:07,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 20:41:07,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:41:07,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 20:41:07,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 20:41:07,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 489 [2023-08-30 20:41:07,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 215.5) internal successors, (862), 4 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:07,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:41:07,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 489 [2023-08-30 20:41:07,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:41:08,221 INFO L130 PetriNetUnfolder]: 2089/3081 cut-off events. [2023-08-30 20:41:08,221 INFO L131 PetriNetUnfolder]: For 1721/1721 co-relation queries the response was YES. [2023-08-30 20:41:08,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7521 conditions, 3081 events. 2089/3081 cut-off events. For 1721/1721 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15920 event pairs, 1506 based on Foata normal form. 74/3085 useless extension candidates. Maximal degree in co-relation 3812. Up to 2239 conditions per place. [2023-08-30 20:41:08,238 INFO L137 encePairwiseOnDemand]: 485/489 looper letters, 62 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2023-08-30 20:41:08,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 71 transitions, 336 flow [2023-08-30 20:41:08,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 20:41:08,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 20:41:08,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 896 transitions. [2023-08-30 20:41:08,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45807770961145194 [2023-08-30 20:41:08,242 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 896 transitions. [2023-08-30 20:41:08,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 896 transitions. [2023-08-30 20:41:08,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:41:08,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 896 transitions. [2023-08-30 20:41:08,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:08,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 489.0) internal successors, (2445), 5 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:08,249 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 489.0) internal successors, (2445), 5 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:08,250 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 124 flow. Second operand 4 states and 896 transitions. [2023-08-30 20:41:08,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 71 transitions, 336 flow [2023-08-30 20:41:08,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 71 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 20:41:08,252 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 142 flow [2023-08-30 20:41:08,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-30 20:41:08,253 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2023-08-30 20:41:08,254 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 142 flow [2023-08-30 20:41:08,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 215.5) internal successors, (862), 4 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:08,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:41:08,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:41:08,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 20:41:08,255 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 20:41:08,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:41:08,256 INFO L85 PathProgramCache]: Analyzing trace with hash -542120705, now seen corresponding path program 1 times [2023-08-30 20:41:08,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:41:08,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968698699] [2023-08-30 20:41:08,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:41:08,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:41:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:41:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:41:08,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:41:08,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968698699] [2023-08-30 20:41:08,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968698699] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 20:41:08,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 20:41:08,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 20:41:08,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714807063] [2023-08-30 20:41:08,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:41:08,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 20:41:08,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:41:08,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 20:41:08,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 20:41:08,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 489 [2023-08-30 20:41:08,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 215.5) internal successors, (862), 4 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:08,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:41:08,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 489 [2023-08-30 20:41:08,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:41:09,106 INFO L130 PetriNetUnfolder]: 3315/5119 cut-off events. [2023-08-30 20:41:09,106 INFO L131 PetriNetUnfolder]: For 2789/2789 co-relation queries the response was YES. [2023-08-30 20:41:09,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12116 conditions, 5119 events. 3315/5119 cut-off events. For 2789/2789 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 31151 event pairs, 2550 based on Foata normal form. 280/5300 useless extension candidates. Maximal degree in co-relation 9501. Up to 2950 conditions per place. [2023-08-30 20:41:09,128 INFO L137 encePairwiseOnDemand]: 484/489 looper letters, 86 selfloop transitions, 5 changer transitions 0/97 dead transitions. [2023-08-30 20:41:09,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 97 transitions, 480 flow [2023-08-30 20:41:09,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 20:41:09,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 20:41:09,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1128 transitions. [2023-08-30 20:41:09,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46134969325153374 [2023-08-30 20:41:09,132 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1128 transitions. [2023-08-30 20:41:09,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1128 transitions. [2023-08-30 20:41:09,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:41:09,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1128 transitions. [2023-08-30 20:41:09,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 225.6) internal successors, (1128), 5 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:09,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 489.0) internal successors, (2934), 6 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:09,140 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 489.0) internal successors, (2934), 6 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:09,141 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 142 flow. Second operand 5 states and 1128 transitions. [2023-08-30 20:41:09,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 97 transitions, 480 flow [2023-08-30 20:41:09,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 97 transitions, 476 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 20:41:09,145 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 171 flow [2023-08-30 20:41:09,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-08-30 20:41:09,145 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2023-08-30 20:41:09,146 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 171 flow [2023-08-30 20:41:09,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 215.5) internal successors, (862), 4 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:09,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:41:09,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:41:09,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 20:41:09,147 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 20:41:09,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:41:09,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1581329091, now seen corresponding path program 1 times [2023-08-30 20:41:09,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:41:09,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122690973] [2023-08-30 20:41:09,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:41:09,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:41:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:41:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 20:41:09,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:41:09,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122690973] [2023-08-30 20:41:09,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122690973] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 20:41:09,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 20:41:09,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 20:41:09,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473622267] [2023-08-30 20:41:09,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:41:09,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 20:41:09,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:41:09,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 20:41:09,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 20:41:09,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 489 [2023-08-30 20:41:09,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 171 flow. Second operand has 6 states, 6 states have (on average 209.66666666666666) internal successors, (1258), 6 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:09,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:41:09,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 489 [2023-08-30 20:41:09,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:41:10,548 INFO L130 PetriNetUnfolder]: 4927/7544 cut-off events. [2023-08-30 20:41:10,548 INFO L131 PetriNetUnfolder]: For 4545/4551 co-relation queries the response was YES. [2023-08-30 20:41:10,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18066 conditions, 7544 events. 4927/7544 cut-off events. For 4545/4551 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 46570 event pairs, 2544 based on Foata normal form. 110/7576 useless extension candidates. Maximal degree in co-relation 12232. Up to 2551 conditions per place. [2023-08-30 20:41:10,587 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 97 selfloop transitions, 8 changer transitions 0/110 dead transitions. [2023-08-30 20:41:10,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 110 transitions, 581 flow [2023-08-30 20:41:10,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 20:41:10,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 20:41:10,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1322 transitions. [2023-08-30 20:41:10,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505794137695978 [2023-08-30 20:41:10,591 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1322 transitions. [2023-08-30 20:41:10,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1322 transitions. [2023-08-30 20:41:10,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:41:10,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1322 transitions. [2023-08-30 20:41:10,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 220.33333333333334) internal successors, (1322), 6 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:10,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:10,600 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:10,600 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 171 flow. Second operand 6 states and 1322 transitions. [2023-08-30 20:41:10,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 110 transitions, 581 flow [2023-08-30 20:41:10,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 110 transitions, 576 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 20:41:10,604 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 203 flow [2023-08-30 20:41:10,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-08-30 20:41:10,605 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2023-08-30 20:41:10,605 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 203 flow [2023-08-30 20:41:10,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 209.66666666666666) internal successors, (1258), 6 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:10,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:41:10,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:41:10,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 20:41:10,607 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 20:41:10,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:41:10,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1340178932, now seen corresponding path program 1 times [2023-08-30 20:41:10,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:41:10,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189998434] [2023-08-30 20:41:10,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:41:10,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:41:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:41:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 20:41:10,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:41:10,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189998434] [2023-08-30 20:41:10,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189998434] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 20:41:10,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 20:41:10,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 20:41:10,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66216979] [2023-08-30 20:41:10,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:41:10,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 20:41:10,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:41:10,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 20:41:10,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 20:41:11,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 489 [2023-08-30 20:41:11,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 203 flow. Second operand has 6 states, 6 states have (on average 209.66666666666666) internal successors, (1258), 6 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:11,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:41:11,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 489 [2023-08-30 20:41:11,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:41:11,726 INFO L130 PetriNetUnfolder]: 4195/6462 cut-off events. [2023-08-30 20:41:11,727 INFO L131 PetriNetUnfolder]: For 3720/3736 co-relation queries the response was YES. [2023-08-30 20:41:11,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15375 conditions, 6462 events. 4195/6462 cut-off events. For 3720/3736 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 40672 event pairs, 1906 based on Foata normal form. 88/6518 useless extension candidates. Maximal degree in co-relation 11333. Up to 2907 conditions per place. [2023-08-30 20:41:11,752 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 57 selfloop transitions, 6 changer transitions 32/100 dead transitions. [2023-08-30 20:41:11,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 100 transitions, 528 flow [2023-08-30 20:41:11,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 20:41:11,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 20:41:11,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1315 transitions. [2023-08-30 20:41:11,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481935923653715 [2023-08-30 20:41:11,756 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1315 transitions. [2023-08-30 20:41:11,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1315 transitions. [2023-08-30 20:41:11,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:41:11,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1315 transitions. [2023-08-30 20:41:11,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 219.16666666666666) internal successors, (1315), 6 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:11,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:11,764 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:11,764 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 203 flow. Second operand 6 states and 1315 transitions. [2023-08-30 20:41:11,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 100 transitions, 528 flow [2023-08-30 20:41:11,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 100 transitions, 518 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 20:41:11,770 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 198 flow [2023-08-30 20:41:11,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2023-08-30 20:41:11,770 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2023-08-30 20:41:11,771 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 198 flow [2023-08-30 20:41:11,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 209.66666666666666) internal successors, (1258), 6 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:11,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:41:11,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:41:11,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 20:41:11,772 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 20:41:11,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:41:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1556167601, now seen corresponding path program 1 times [2023-08-30 20:41:11,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:41:11,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469391628] [2023-08-30 20:41:11,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:41:11,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:41:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:41:12,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:41:12,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:41:12,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469391628] [2023-08-30 20:41:12,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469391628] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 20:41:12,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 20:41:12,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 20:41:12,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103661679] [2023-08-30 20:41:12,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:41:12,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 20:41:12,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:41:12,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 20:41:12,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 20:41:12,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 489 [2023-08-30 20:41:12,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 205.83333333333334) internal successors, (1235), 6 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:12,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:41:12,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 489 [2023-08-30 20:41:12,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:41:12,986 INFO L130 PetriNetUnfolder]: 4075/5840 cut-off events. [2023-08-30 20:41:12,986 INFO L131 PetriNetUnfolder]: For 4552/4552 co-relation queries the response was YES. [2023-08-30 20:41:13,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14882 conditions, 5840 events. 4075/5840 cut-off events. For 4552/4552 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 30908 event pairs, 856 based on Foata normal form. 408/6232 useless extension candidates. Maximal degree in co-relation 12650. Up to 3054 conditions per place. [2023-08-30 20:41:13,021 INFO L137 encePairwiseOnDemand]: 482/489 looper letters, 75 selfloop transitions, 9 changer transitions 11/99 dead transitions. [2023-08-30 20:41:13,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 571 flow [2023-08-30 20:41:13,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 20:41:13,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 20:41:13,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1489 transitions. [2023-08-30 20:41:13,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349985392930178 [2023-08-30 20:41:13,026 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1489 transitions. [2023-08-30 20:41:13,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1489 transitions. [2023-08-30 20:41:13,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:41:13,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1489 transitions. [2023-08-30 20:41:13,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 212.71428571428572) internal successors, (1489), 7 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:13,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:13,036 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:13,037 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 198 flow. Second operand 7 states and 1489 transitions. [2023-08-30 20:41:13,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 571 flow [2023-08-30 20:41:13,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 99 transitions, 545 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-30 20:41:13,041 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 220 flow [2023-08-30 20:41:13,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=220, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2023-08-30 20:41:13,042 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2023-08-30 20:41:13,042 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 220 flow [2023-08-30 20:41:13,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.83333333333334) internal successors, (1235), 6 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:13,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:41:13,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:41:13,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 20:41:13,046 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 20:41:13,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:41:13,047 INFO L85 PathProgramCache]: Analyzing trace with hash 201289136, now seen corresponding path program 1 times [2023-08-30 20:41:13,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:41:13,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969871295] [2023-08-30 20:41:13,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:41:13,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:41:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:41:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:41:13,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:41:13,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969871295] [2023-08-30 20:41:13,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969871295] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 20:41:13,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 20:41:13,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 20:41:13,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096915278] [2023-08-30 20:41:13,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:41:13,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 20:41:13,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:41:13,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 20:41:13,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 20:41:13,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 489 [2023-08-30 20:41:13,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 209.83333333333334) internal successors, (1259), 6 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:13,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:41:13,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 489 [2023-08-30 20:41:13,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:41:13,897 INFO L130 PetriNetUnfolder]: 2558/3601 cut-off events. [2023-08-30 20:41:13,897 INFO L131 PetriNetUnfolder]: For 4352/4570 co-relation queries the response was YES. [2023-08-30 20:41:13,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10395 conditions, 3601 events. 2558/3601 cut-off events. For 4352/4570 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 17678 event pairs, 364 based on Foata normal form. 356/3939 useless extension candidates. Maximal degree in co-relation 10364. Up to 1820 conditions per place. [2023-08-30 20:41:13,916 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 65 selfloop transitions, 5 changer transitions 2/79 dead transitions. [2023-08-30 20:41:13,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 488 flow [2023-08-30 20:41:13,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 20:41:13,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 20:41:13,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1289 transitions. [2023-08-30 20:41:13,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393319700068166 [2023-08-30 20:41:13,920 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1289 transitions. [2023-08-30 20:41:13,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1289 transitions. [2023-08-30 20:41:13,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:41:13,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1289 transitions. [2023-08-30 20:41:13,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.83333333333334) internal successors, (1289), 6 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:13,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:13,927 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:13,927 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 220 flow. Second operand 6 states and 1289 transitions. [2023-08-30 20:41:13,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 488 flow [2023-08-30 20:41:13,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 451 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-08-30 20:41:13,931 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 193 flow [2023-08-30 20:41:13,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2023-08-30 20:41:13,932 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2023-08-30 20:41:13,932 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 193 flow [2023-08-30 20:41:13,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 209.83333333333334) internal successors, (1259), 6 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:13,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:41:13,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:41:13,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 20:41:13,933 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 20:41:13,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:41:13,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1022492673, now seen corresponding path program 1 times [2023-08-30 20:41:13,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:41:13,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892393315] [2023-08-30 20:41:13,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:41:13,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:41:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:41:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 20:41:14,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:41:14,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892393315] [2023-08-30 20:41:14,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892393315] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:41:14,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242828486] [2023-08-30 20:41:14,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:41:14,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:41:14,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:41:14,233 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) [2023-08-30 20:41:14,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 20:41:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:41:14,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 20:41:14,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:41:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 20:41:14,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:41:14,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 20:41:14,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242828486] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 20:41:14,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 20:41:14,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 6] total 14 [2023-08-30 20:41:14,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139094794] [2023-08-30 20:41:14,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:41:14,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 20:41:14,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:41:14,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 20:41:14,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-08-30 20:41:14,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 489 [2023-08-30 20:41:14,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 195.71428571428572) internal successors, (1370), 7 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:14,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:41:14,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 489 [2023-08-30 20:41:14,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:41:15,734 INFO L130 PetriNetUnfolder]: 3440/4692 cut-off events. [2023-08-30 20:41:15,734 INFO L131 PetriNetUnfolder]: For 4852/5016 co-relation queries the response was YES. [2023-08-30 20:41:15,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13882 conditions, 4692 events. 3440/4692 cut-off events. For 4852/5016 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 19693 event pairs, 343 based on Foata normal form. 400/5091 useless extension candidates. Maximal degree in co-relation 13852. Up to 2520 conditions per place. [2023-08-30 20:41:15,759 INFO L137 encePairwiseOnDemand]: 479/489 looper letters, 116 selfloop transitions, 18 changer transitions 0/136 dead transitions. [2023-08-30 20:41:15,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 136 transitions, 799 flow [2023-08-30 20:41:15,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 20:41:15,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 20:41:15,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1830 transitions. [2023-08-30 20:41:15,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4158145875937287 [2023-08-30 20:41:15,764 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1830 transitions. [2023-08-30 20:41:15,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1830 transitions. [2023-08-30 20:41:15,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:41:15,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1830 transitions. [2023-08-30 20:41:15,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 203.33333333333334) internal successors, (1830), 9 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:15,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 489.0) internal successors, (4890), 10 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:15,787 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 489.0) internal successors, (4890), 10 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:15,788 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 193 flow. Second operand 9 states and 1830 transitions. [2023-08-30 20:41:15,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 136 transitions, 799 flow [2023-08-30 20:41:15,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 136 transitions, 775 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-08-30 20:41:15,797 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 330 flow [2023-08-30 20:41:15,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=330, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-08-30 20:41:15,799 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2023-08-30 20:41:15,799 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 330 flow [2023-08-30 20:41:15,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 195.71428571428572) internal successors, (1370), 7 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:15,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:41:15,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:41:15,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 20:41:16,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 20:41:16,006 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 20:41:16,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:41:16,007 INFO L85 PathProgramCache]: Analyzing trace with hash -365900509, now seen corresponding path program 2 times [2023-08-30 20:41:16,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:41:16,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815279324] [2023-08-30 20:41:16,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:41:16,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:41:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:41:16,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 20:41:16,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:41:16,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815279324] [2023-08-30 20:41:16,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815279324] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:41:16,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125035684] [2023-08-30 20:41:16,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 20:41:16,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:41:16,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:41:16,227 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:41:16,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 20:41:16,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 20:41:16,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:41:16,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 20:41:16,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:41:16,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 20:41:16,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 20:41:16,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125035684] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 20:41:16,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 20:41:16,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-08-30 20:41:16,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628806336] [2023-08-30 20:41:16,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:41:16,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 20:41:16,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:41:16,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 20:41:16,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 20:41:16,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 489 [2023-08-30 20:41:16,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 330 flow. Second operand has 5 states, 5 states have (on average 222.2) internal successors, (1111), 5 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:16,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:41:16,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 489 [2023-08-30 20:41:16,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:41:17,307 INFO L130 PetriNetUnfolder]: 4386/5898 cut-off events. [2023-08-30 20:41:17,307 INFO L131 PetriNetUnfolder]: For 18338/18812 co-relation queries the response was YES. [2023-08-30 20:41:17,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23261 conditions, 5898 events. 4386/5898 cut-off events. For 18338/18812 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 26375 event pairs, 517 based on Foata normal form. 476/6360 useless extension candidates. Maximal degree in co-relation 23228. Up to 2376 conditions per place. [2023-08-30 20:41:17,350 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 109 selfloop transitions, 21 changer transitions 0/136 dead transitions. [2023-08-30 20:41:17,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 136 transitions, 1004 flow [2023-08-30 20:41:17,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 20:41:17,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 20:41:17,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1382 transitions. [2023-08-30 20:41:17,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710293115201091 [2023-08-30 20:41:17,354 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1382 transitions. [2023-08-30 20:41:17,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1382 transitions. [2023-08-30 20:41:17,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:41:17,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1382 transitions. [2023-08-30 20:41:17,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 230.33333333333334) internal successors, (1382), 6 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:17,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:17,362 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:17,362 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 330 flow. Second operand 6 states and 1382 transitions. [2023-08-30 20:41:17,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 136 transitions, 1004 flow [2023-08-30 20:41:17,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 136 transitions, 968 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-08-30 20:41:17,414 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 519 flow [2023-08-30 20:41:17,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=519, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2023-08-30 20:41:17,415 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2023-08-30 20:41:17,415 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 519 flow [2023-08-30 20:41:17,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.2) internal successors, (1111), 5 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:17,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:41:17,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:41:17,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 20:41:17,622 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,SelfDestructingSolverStorable10 [2023-08-30 20:41:17,623 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 20:41:17,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:41:17,623 INFO L85 PathProgramCache]: Analyzing trace with hash 734426962, now seen corresponding path program 1 times [2023-08-30 20:41:17,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:41:17,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056070665] [2023-08-30 20:41:17,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:41:17,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:41:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:41:17,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 20:41:17,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:41:17,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056070665] [2023-08-30 20:41:17,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056070665] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:41:17,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438222248] [2023-08-30 20:41:17,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:41:17,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:41:17,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:41:17,835 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:41:17,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 20:41:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:41:17,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 20:41:17,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:41:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 20:41:18,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 20:41:18,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438222248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 20:41:18,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 20:41:18,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-08-30 20:41:18,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16380099] [2023-08-30 20:41:18,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:41:18,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 20:41:18,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:41:18,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 20:41:18,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 20:41:18,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 489 [2023-08-30 20:41:18,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 519 flow. Second operand has 5 states, 5 states have (on average 222.2) internal successors, (1111), 5 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:18,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:41:18,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 489 [2023-08-30 20:41:18,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:41:19,327 INFO L130 PetriNetUnfolder]: 8002/10940 cut-off events. [2023-08-30 20:41:19,328 INFO L131 PetriNetUnfolder]: For 58387/59401 co-relation queries the response was YES. [2023-08-30 20:41:19,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48523 conditions, 10940 events. 8002/10940 cut-off events. For 58387/59401 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 54632 event pairs, 1754 based on Foata normal form. 1021/11820 useless extension candidates. Maximal degree in co-relation 48485. Up to 4199 conditions per place. [2023-08-30 20:41:19,420 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 139 selfloop transitions, 15 changer transitions 0/164 dead transitions. [2023-08-30 20:41:19,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 164 transitions, 1514 flow [2023-08-30 20:41:19,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 20:41:19,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 20:41:19,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1384 transitions. [2023-08-30 20:41:19,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47171097477845947 [2023-08-30 20:41:19,425 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1384 transitions. [2023-08-30 20:41:19,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1384 transitions. [2023-08-30 20:41:19,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:41:19,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1384 transitions. [2023-08-30 20:41:19,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 230.66666666666666) internal successors, (1384), 6 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:19,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:19,432 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:19,432 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 519 flow. Second operand 6 states and 1384 transitions. [2023-08-30 20:41:19,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 164 transitions, 1514 flow [2023-08-30 20:41:19,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 164 transitions, 1481 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-08-30 20:41:19,493 INFO L231 Difference]: Finished difference. Result has 81 places, 82 transitions, 630 flow [2023-08-30 20:41:19,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=630, PETRI_PLACES=81, PETRI_TRANSITIONS=82} [2023-08-30 20:41:19,495 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2023-08-30 20:41:19,495 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 82 transitions, 630 flow [2023-08-30 20:41:19,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.2) internal successors, (1111), 5 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 20:41:19,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:41:19,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:41:19,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 20:41:19,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:41:19,702 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 20:41:19,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:41:19,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1209534086, now seen corresponding path program 1 times [2023-08-30 20:41:19,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:41:19,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489302804] [2023-08-30 20:41:19,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:41:19,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:41:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:41:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:41:23,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:41:23,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489302804] [2023-08-30 20:41:23,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489302804] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:41:23,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867820148] [2023-08-30 20:41:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:41:23,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:41:23,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:41:23,179 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:41:23,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 20:41:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:41:23,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 102 conjunts are in the unsatisfiable core [2023-08-30 20:41:23,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:41:23,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:41:23,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:41:23,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:41:23,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:41:23,501 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 20:41:23,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2023-08-30 20:41:23,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-30 20:41:23,774 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 20:41:23,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 20:41:23,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-08-30 20:41:24,029 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 20:41:24,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 20:41:24,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-08-30 20:41:24,393 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 [2023-08-30 20:41:24,677 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 [2023-08-30 20:41:24,901 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 [2023-08-30 20:41:25,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:41:25,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:41:25,684 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 20:41:25,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 36 [2023-08-30 20:41:26,081 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:41:26,109 INFO L321 Elim1Store]: treesize reduction 55, result has 35.3 percent of original size [2023-08-30 20:41:26,109 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 50 treesize of output 43 [2023-08-30 20:41:26,157 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:41:26,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:41:26,741 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~n1~0 c_~q1_front~0) (< c_~q2_back~0 0) (< c_~q1_front~0 0) (<= c_~n2~0 c_~q2_back~0) (<= c_~n2~0 c_~q2_front~0) (< c_~q2_front~0 0) (let ((.cse3 (+ (* c_~q2_back~0 4) c_~q2~0.offset)) (.cse5 (+ c_~f~0.offset (* c_~j~0 4))) (.cse1 (+ c_~q2~0.offset (* c_~q2_front~0 4))) (.cse2 (select (select |c_#memory_int| c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)))) (and (forall ((~q2~0.base Int) (v_ArrVal_618 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_618))) (let ((.cse0 (select .cse4 ~q2~0.base))) (or (< 0 (+ c_~total~0 (select .cse0 .cse1) .cse2 1)) (not (= (+ (select .cse0 .cse3) (select (select .cse4 c_~f~0.base) .cse5)) 0)))))) (forall ((~q2~0.base Int) (v_ArrVal_618 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_618))) (let ((.cse6 (select .cse7 ~q2~0.base))) (or (not (= (+ (select .cse6 .cse3) (select (select .cse7 c_~f~0.base) .cse5)) 0)) (<= (+ c_~total~0 (select .cse6 .cse1) .cse2) 0)))))))) is different from false [2023-08-30 20:41:27,507 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~n1~0 c_~q1_back~0) (<= c_~n1~0 c_~q1_front~0) (< c_~q2_back~0 0) (< c_~q1_front~0 0) (<= c_~n2~0 c_~q2_back~0) (< c_~q1_back~0 0) (<= c_~n2~0 c_~q2_front~0) (< c_~q2_front~0 0) (let ((.cse5 (+ (* c_~q1_front~0 4) c_~q1~0.offset)) (.cse6 (+ c_~q2~0.offset (* c_~q2_front~0 4))) (.cse1 (+ (* c_~q2_back~0 4) c_~q2~0.offset)) (.cse3 (+ c_~f~0.offset (* c_~j~0 4))) (.cse8 (+ (* c_~q1_back~0 4) c_~q1~0.offset)) (.cse9 (+ c_~f~0.offset (* c_~i~0 4)))) (and (forall ((v_ArrVal_616 (Array Int Int)) (v_ArrVal_617 (Array Int Int))) (let ((.cse7 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_616) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_617))) (let ((.cse4 (select .cse7 c_~q1~0.base))) (or (forall ((~q2~0.base Int) (v_ArrVal_618 (Array Int Int))) (let ((.cse2 (store .cse7 |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_618))) (let ((.cse0 (select .cse2 ~q2~0.base))) (or (not (= (+ (select .cse0 .cse1) (select (select .cse2 c_~f~0.base) .cse3)) 0)) (<= (+ (select .cse4 .cse5) c_~total~0 (select .cse0 .cse6)) 0))))) (not (= (select .cse4 .cse8) (select (select .cse7 c_~f~0.base) .cse9))))))) (forall ((v_ArrVal_616 (Array Int Int)) (v_ArrVal_617 (Array Int Int))) (let ((.cse13 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_616) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_617))) (let ((.cse10 (select .cse13 c_~q1~0.base))) (or (forall ((~q2~0.base Int) (v_ArrVal_618 (Array Int Int))) (let ((.cse12 (store .cse13 |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_618))) (let ((.cse11 (select .cse12 ~q2~0.base))) (or (< 0 (+ (select .cse10 .cse5) c_~total~0 (select .cse11 .cse6) 1)) (not (= (+ (select .cse11 .cse1) (select (select .cse12 c_~f~0.base) .cse3)) 0)))))) (not (= (select .cse10 .cse8) (select (select .cse13 c_~f~0.base) .cse9)))))))))) is different from false [2023-08-30 20:41:30,185 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:41:30,186 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 229 treesize of output 169 [2023-08-30 20:41:30,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:41:34,381 INFO L321 Elim1Store]: treesize reduction 56, result has 72.1 percent of original size [2023-08-30 20:41:34,423 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 6 new quantified variables, introduced 15 case distinctions, treesize of input 601699123170 treesize of output 593575280754 [2023-08-30 20:45:00,304 WARN L222 SmtUtils]: Spent 3.43m on a formula simplification. DAG size of input: 42104 DAG size of output: 1579 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-08-30 20:45:03,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:45:03,525 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:45:03,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 176802 treesize of output 174230 [2023-08-30 20:45:06,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:45:06,811 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:45:06,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 174114 treesize of output 152726 [2023-08-30 20:45:10,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:45:10,259 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:45:10,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 152610 treesize of output 147350 [2023-08-30 20:45:13,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:45:13,856 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:45:13,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 147234 treesize of output 146006 [2023-08-30 20:45:17,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:45:17,541 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:45:17,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 129004 treesize of output 108532 [2023-08-30 20:45:21,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:45:21,331 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:45:21,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 125410 treesize of output 114774 [2023-08-30 20:53:21,004 WARN L222 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 858 DAG size of output: 937 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15