./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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 ../sv-benchmarks/c/weaver/chl-nzb-file-subst.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 57b20b3268fa30a07af1365aac59c96531ad2ebea6861c18a1d5dfea8339adbb --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:59:31,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:59:31,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:59:31,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:59:31,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:59:31,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:59:31,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:59:31,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:59:31,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:59:31,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:59:31,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:59:31,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:59:31,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:59:31,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:59:31,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:59:31,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:59:31,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:59:31,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:59:31,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:59:31,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:59:31,631 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:59:31,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:59:31,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:59:31,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:59:31,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:59:31,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:59:31,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:59:31,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:59:31,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:59:31,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:59:31,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:59:31,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:59:31,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:59:31,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:59:31,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:59:31,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:59:31,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:59:31,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:59:31,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:59:31,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:59:31,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:59:31,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:59:31,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:59:31,678 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:59:31,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:59:31,681 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:59:31,681 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:59:31,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:59:31,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:59:31,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:59:31,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:59:31,683 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:59:31,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:59:31,684 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:59:31,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:59:31,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:59:31,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:59:31,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:59:31,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:59:31,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:59:31,694 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:59:31,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:59:31,695 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:59:31,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:59:31,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:59:31,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:59:31,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:59:31,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:59:31,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:59:31,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:59:31,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:59:31,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:59:31,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:59:31,697 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:59:31,697 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:59:31,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:59:31,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b20b3268fa30a07af1365aac59c96531ad2ebea6861c18a1d5dfea8339adbb [2022-07-21 08:59:31,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:59:32,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:59:32,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:59:32,021 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:59:32,021 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:59:32,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2022-07-21 08:59:32,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31ae2cf14/5a0ab710108345569d3452dda6006fcb/FLAGabcbbf49f [2022-07-21 08:59:32,530 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:59:32,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2022-07-21 08:59:32,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31ae2cf14/5a0ab710108345569d3452dda6006fcb/FLAGabcbbf49f [2022-07-21 08:59:32,901 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31ae2cf14/5a0ab710108345569d3452dda6006fcb [2022-07-21 08:59:32,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:59:32,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:59:32,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:59:32,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:59:32,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:59:32,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:59:32" (1/1) ... [2022-07-21 08:59:32,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a55acc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:32, skipping insertion in model container [2022-07-21 08:59:32,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:59:32" (1/1) ... [2022-07-21 08:59:32,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:59:32,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:59:33,109 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6501,6514] [2022-07-21 08:59:33,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:59:33,127 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:59:33,182 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6501,6514] [2022-07-21 08:59:33,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:59:33,207 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:59:33,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:33 WrapperNode [2022-07-21 08:59:33,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:59:33,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:59:33,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:59:33,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:59:33,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:33" (1/1) ... [2022-07-21 08:59:33,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:33" (1/1) ... [2022-07-21 08:59:33,262 INFO L137 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 646 [2022-07-21 08:59:33,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:59:33,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:59:33,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:59:33,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:59:33,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:33" (1/1) ... [2022-07-21 08:59:33,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:33" (1/1) ... [2022-07-21 08:59:33,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:33" (1/1) ... [2022-07-21 08:59:33,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:33" (1/1) ... [2022-07-21 08:59:33,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:33" (1/1) ... [2022-07-21 08:59:33,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:33" (1/1) ... [2022-07-21 08:59:33,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:33" (1/1) ... [2022-07-21 08:59:33,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:59:33,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:59:33,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:59:33,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:59:33,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:33" (1/1) ... [2022-07-21 08:59:33,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:59:33,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:59:33,381 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) [2022-07-21 08:59:33,411 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 [2022-07-21 08:59:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:59:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:59:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:59:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:59:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 08:59:33,428 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 08:59:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 08:59:33,428 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 08:59:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-21 08:59:33,429 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-21 08:59:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:59:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 08:59:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:59:33,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:59:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:59:33,431 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:59:33,629 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:59:33,631 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:59:34,403 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:59:34,414 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:59:34,415 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-21 08:59:34,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:59:34 BoogieIcfgContainer [2022-07-21 08:59:34,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:59:34,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:59:34,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:59:34,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:59:34,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:59:32" (1/3) ... [2022-07-21 08:59:34,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6d69eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:59:34, skipping insertion in model container [2022-07-21 08:59:34,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:59:33" (2/3) ... [2022-07-21 08:59:34,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6d69eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:59:34, skipping insertion in model container [2022-07-21 08:59:34,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:59:34" (3/3) ... [2022-07-21 08:59:34,423 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2022-07-21 08:59:34,426 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:59:34,432 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:59:34,432 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:59:34,432 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:59:34,615 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-21 08:59:34,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 770 places, 851 transitions, 1726 flow [2022-07-21 08:59:35,049 INFO L129 PetriNetUnfolder]: 91/848 cut-off events. [2022-07-21 08:59:35,050 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 08:59:35,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 861 conditions, 848 events. 91/848 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3067 event pairs, 0 based on Foata normal form. 0/756 useless extension candidates. Maximal degree in co-relation 622. Up to 2 conditions per place. [2022-07-21 08:59:35,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 770 places, 851 transitions, 1726 flow [2022-07-21 08:59:35,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 756 places, 837 transitions, 1692 flow [2022-07-21 08:59:35,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:59:35,130 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3829cc46, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7ed3ac54 [2022-07-21 08:59:35,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 08:59:35,438 INFO L129 PetriNetUnfolder]: 89/826 cut-off events. [2022-07-21 08:59:35,439 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 08:59:35,439 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:35,440 INFO L200 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, 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, 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, 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, 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, 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, 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] [2022-07-21 08:59:35,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:35,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:35,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1800599683, now seen corresponding path program 1 times [2022-07-21 08:59:35,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:35,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604177896] [2022-07-21 08:59:35,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:35,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:35,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:35,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604177896] [2022-07-21 08:59:35,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604177896] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:35,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:35,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:59:35,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489322947] [2022-07-21 08:59:35,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:35,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 08:59:35,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:35,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 08:59:35,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 08:59:35,815 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 807 out of 851 [2022-07-21 08:59:35,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 756 places, 837 transitions, 1692 flow. Second operand has 2 states, 2 states have (on average 811.0) internal successors, (1622), 2 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:35,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:35,821 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 807 of 851 [2022-07-21 08:59:35,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:36,152 INFO L129 PetriNetUnfolder]: 54/800 cut-off events. [2022-07-21 08:59:36,153 INFO L130 PetriNetUnfolder]: For 14/16 co-relation queries the response was YES. [2022-07-21 08:59:36,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 800 events. 54/800 cut-off events. For 14/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2979 event pairs, 0 based on Foata normal form. 60/775 useless extension candidates. Maximal degree in co-relation 597. Up to 7 conditions per place. [2022-07-21 08:59:36,205 INFO L132 encePairwiseOnDemand]: 814/851 looper letters, 6 selfloop transitions, 0 changer transitions 7/800 dead transitions. [2022-07-21 08:59:36,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 757 places, 800 transitions, 1630 flow [2022-07-21 08:59:36,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 08:59:36,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-21 08:59:36,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1657 transitions. [2022-07-21 08:59:36,226 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9735605170387779 [2022-07-21 08:59:36,227 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1657 transitions. [2022-07-21 08:59:36,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1657 transitions. [2022-07-21 08:59:36,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:36,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1657 transitions. [2022-07-21 08:59:36,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 828.5) internal successors, (1657), 2 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:36,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 851.0) internal successors, (2553), 3 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:36,257 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 851.0) internal successors, (2553), 3 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:36,259 INFO L186 Difference]: Start difference. First operand has 756 places, 837 transitions, 1692 flow. Second operand 2 states and 1657 transitions. [2022-07-21 08:59:36,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 757 places, 800 transitions, 1630 flow [2022-07-21 08:59:36,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 751 places, 800 transitions, 1618 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-21 08:59:36,287 INFO L242 Difference]: Finished difference. Result has 751 places, 793 transitions, 1592 flow [2022-07-21 08:59:36,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=750, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=800, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1592, PETRI_PLACES=751, PETRI_TRANSITIONS=793} [2022-07-21 08:59:36,294 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, -5 predicate places. [2022-07-21 08:59:36,295 INFO L495 AbstractCegarLoop]: Abstraction has has 751 places, 793 transitions, 1592 flow [2022-07-21 08:59:36,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 811.0) internal successors, (1622), 2 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:36,296 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:36,297 INFO L200 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, 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, 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, 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, 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, 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, 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] [2022-07-21 08:59:36,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:59:36,297 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:36,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:36,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1922282005, now seen corresponding path program 1 times [2022-07-21 08:59:36,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:36,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470209622] [2022-07-21 08:59:36,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:36,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:36,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:36,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:36,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470209622] [2022-07-21 08:59:36,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470209622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:36,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:36,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:59:36,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382188895] [2022-07-21 08:59:36,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:36,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:59:36,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:36,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:59:36,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:59:36,590 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 793 out of 851 [2022-07-21 08:59:36,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 751 places, 793 transitions, 1592 flow. Second operand has 3 states, 3 states have (on average 797.0) internal successors, (2391), 3 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:36,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:36,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 793 of 851 [2022-07-21 08:59:36,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:37,586 INFO L129 PetriNetUnfolder]: 220/2410 cut-off events. [2022-07-21 08:59:37,587 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-07-21 08:59:37,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2593 conditions, 2410 events. 220/2410 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 18722 event pairs, 47 based on Foata normal form. 0/2143 useless extension candidates. Maximal degree in co-relation 2590. Up to 110 conditions per place. [2022-07-21 08:59:37,686 INFO L132 encePairwiseOnDemand]: 847/851 looper letters, 33 selfloop transitions, 2 changer transitions 0/808 dead transitions. [2022-07-21 08:59:37,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 746 places, 808 transitions, 1697 flow [2022-07-21 08:59:37,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:59:37,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:59:37,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2416 transitions. [2022-07-21 08:59:37,694 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9463376419898158 [2022-07-21 08:59:37,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2416 transitions. [2022-07-21 08:59:37,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2416 transitions. [2022-07-21 08:59:37,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:37,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2416 transitions. [2022-07-21 08:59:37,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 805.3333333333334) internal successors, (2416), 3 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:37,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:37,710 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:37,710 INFO L186 Difference]: Start difference. First operand has 751 places, 793 transitions, 1592 flow. Second operand 3 states and 2416 transitions. [2022-07-21 08:59:37,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 746 places, 808 transitions, 1697 flow [2022-07-21 08:59:37,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 746 places, 808 transitions, 1697 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:59:37,725 INFO L242 Difference]: Finished difference. Result has 748 places, 795 transitions, 1612 flow [2022-07-21 08:59:37,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=744, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=791, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1612, PETRI_PLACES=748, PETRI_TRANSITIONS=795} [2022-07-21 08:59:37,727 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, -8 predicate places. [2022-07-21 08:59:37,727 INFO L495 AbstractCegarLoop]: Abstraction has has 748 places, 795 transitions, 1612 flow [2022-07-21 08:59:37,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 797.0) internal successors, (2391), 3 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:37,729 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:37,730 INFO L200 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, 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, 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, 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, 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, 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, 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] [2022-07-21 08:59:37,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:59:37,730 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:37,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:37,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1772160741, now seen corresponding path program 2 times [2022-07-21 08:59:37,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:37,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401565712] [2022-07-21 08:59:37,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:37,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:37,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:37,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:37,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401565712] [2022-07-21 08:59:37,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401565712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:37,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:37,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:59:37,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247678715] [2022-07-21 08:59:37,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:37,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:59:37,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:37,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:59:37,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:59:37,853 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 793 out of 851 [2022-07-21 08:59:37,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 748 places, 795 transitions, 1612 flow. Second operand has 3 states, 3 states have (on average 797.0) internal successors, (2391), 3 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:37,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:37,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 793 of 851 [2022-07-21 08:59:37,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:38,678 INFO L129 PetriNetUnfolder]: 212/2392 cut-off events. [2022-07-21 08:59:38,678 INFO L130 PetriNetUnfolder]: For 104/107 co-relation queries the response was YES. [2022-07-21 08:59:38,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2646 conditions, 2392 events. 212/2392 cut-off events. For 104/107 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 18746 event pairs, 54 based on Foata normal form. 4/2175 useless extension candidates. Maximal degree in co-relation 2641. Up to 132 conditions per place. [2022-07-21 08:59:38,845 INFO L132 encePairwiseOnDemand]: 845/851 looper letters, 33 selfloop transitions, 4 changer transitions 0/810 dead transitions. [2022-07-21 08:59:38,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 750 places, 810 transitions, 1725 flow [2022-07-21 08:59:38,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:59:38,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:59:38,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2416 transitions. [2022-07-21 08:59:38,851 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9463376419898158 [2022-07-21 08:59:38,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2416 transitions. [2022-07-21 08:59:38,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2416 transitions. [2022-07-21 08:59:38,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:38,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2416 transitions. [2022-07-21 08:59:38,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 805.3333333333334) internal successors, (2416), 3 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:38,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:38,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:38,865 INFO L186 Difference]: Start difference. First operand has 748 places, 795 transitions, 1612 flow. Second operand 3 states and 2416 transitions. [2022-07-21 08:59:38,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 750 places, 810 transitions, 1725 flow [2022-07-21 08:59:38,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 749 places, 810 transitions, 1723 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:59:38,880 INFO L242 Difference]: Finished difference. Result has 751 places, 797 transitions, 1642 flow [2022-07-21 08:59:38,881 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=747, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=795, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=791, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1642, PETRI_PLACES=751, PETRI_TRANSITIONS=797} [2022-07-21 08:59:38,882 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, -5 predicate places. [2022-07-21 08:59:38,882 INFO L495 AbstractCegarLoop]: Abstraction has has 751 places, 797 transitions, 1642 flow [2022-07-21 08:59:38,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 797.0) internal successors, (2391), 3 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:38,884 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:38,884 INFO L200 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, 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, 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, 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, 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, 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, 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] [2022-07-21 08:59:38,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:59:38,885 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:38,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:38,885 INFO L85 PathProgramCache]: Analyzing trace with hash -989449097, now seen corresponding path program 1 times [2022-07-21 08:59:38,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:38,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196146578] [2022-07-21 08:59:38,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:38,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:38,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:38,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:38,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196146578] [2022-07-21 08:59:38,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196146578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:38,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:38,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:59:38,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694291932] [2022-07-21 08:59:38,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:38,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:59:38,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:38,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:59:38,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:59:38,962 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 793 out of 851 [2022-07-21 08:59:38,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 751 places, 797 transitions, 1642 flow. Second operand has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:38,965 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:38,965 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 793 of 851 [2022-07-21 08:59:38,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:40,528 INFO L129 PetriNetUnfolder]: 803/6990 cut-off events. [2022-07-21 08:59:40,529 INFO L130 PetriNetUnfolder]: For 405/473 co-relation queries the response was YES. [2022-07-21 08:59:40,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7705 conditions, 6990 events. 803/6990 cut-off events. For 405/473 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 72380 event pairs, 207 based on Foata normal form. 10/6165 useless extension candidates. Maximal degree in co-relation 7699. Up to 386 conditions per place. [2022-07-21 08:59:40,652 INFO L132 encePairwiseOnDemand]: 847/851 looper letters, 34 selfloop transitions, 3 changer transitions 0/812 dead transitions. [2022-07-21 08:59:40,652 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 753 places, 812 transitions, 1760 flow [2022-07-21 08:59:40,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:59:40,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:59:40,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2415 transitions. [2022-07-21 08:59:40,659 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9459459459459459 [2022-07-21 08:59:40,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2415 transitions. [2022-07-21 08:59:40,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2415 transitions. [2022-07-21 08:59:40,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:40,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2415 transitions. [2022-07-21 08:59:40,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 805.0) internal successors, (2415), 3 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:40,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:40,680 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:40,680 INFO L186 Difference]: Start difference. First operand has 751 places, 797 transitions, 1642 flow. Second operand 3 states and 2415 transitions. [2022-07-21 08:59:40,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 753 places, 812 transitions, 1760 flow [2022-07-21 08:59:40,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 751 places, 812 transitions, 1744 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-21 08:59:40,699 INFO L242 Difference]: Finished difference. Result has 753 places, 800 transitions, 1666 flow [2022-07-21 08:59:40,701 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=749, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=797, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=794, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1666, PETRI_PLACES=753, PETRI_TRANSITIONS=800} [2022-07-21 08:59:40,703 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, -3 predicate places. [2022-07-21 08:59:40,704 INFO L495 AbstractCegarLoop]: Abstraction has has 753 places, 800 transitions, 1666 flow [2022-07-21 08:59:40,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:40,706 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:40,706 INFO L200 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, 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, 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, 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, 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, 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, 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] [2022-07-21 08:59:40,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:59:40,707 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:40,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:40,707 INFO L85 PathProgramCache]: Analyzing trace with hash 681800273, now seen corresponding path program 1 times [2022-07-21 08:59:40,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:40,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741268074] [2022-07-21 08:59:40,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:40,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:40,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:40,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:40,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741268074] [2022-07-21 08:59:40,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741268074] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:40,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:40,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:59:40,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657386106] [2022-07-21 08:59:40,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:40,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:59:40,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:40,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:59:40,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:59:40,786 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 793 out of 851 [2022-07-21 08:59:40,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 753 places, 800 transitions, 1666 flow. Second operand has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:40,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:40,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 793 of 851 [2022-07-21 08:59:40,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:42,047 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([2688] thread3EXIT-->L161-2: Formula: (and (= 0 v_thread3Thread1of1ForFork1_thidvar3_4) (= 0 v_thread3Thread1of1ForFork1_thidvar1_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem114#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread3Thread1of1ForFork1_thidvar0_4) (= 0 v_thread3Thread1of1ForFork1_thidvar2_4)) InVars {ULTIMATE.start_main_#t~mem114#1=|v_ULTIMATE.start_main_#t~mem114#1_5|, thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} OutVars{ULTIMATE.start_main_#t~mem114#1=|v_ULTIMATE.start_main_#t~mem114#1_5|, thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} AuxVars[] AssignedVars[][685], [788#true, 778#(not (= (+ (* (- 256) (div ~is_null_5~0 256)) ~is_null_5~0) 0)), Black: 784#(= (+ (* (- 256) (div ~is_null_5~0 256)) ~is_null_5~0) 0), 794#true, 773#true, Black: 790#(not (= (+ ~is_null_9~0 (* (- 256) (div ~is_null_9~0 256))) 0)), 578#L161-2true, Black: 776#true]) [2022-07-21 08:59:42,048 INFO L384 tUnfolder$Statistics]: this new event has 250 ancestors and is not cut-off event [2022-07-21 08:59:42,048 INFO L387 tUnfolder$Statistics]: existing Event has 257 ancestors and is not cut-off event [2022-07-21 08:59:42,048 INFO L387 tUnfolder$Statistics]: existing Event has 259 ancestors and is not cut-off event [2022-07-21 08:59:42,048 INFO L387 tUnfolder$Statistics]: existing Event has 250 ancestors and is not cut-off event [2022-07-21 08:59:42,137 INFO L129 PetriNetUnfolder]: 451/4592 cut-off events. [2022-07-21 08:59:42,137 INFO L130 PetriNetUnfolder]: For 364/452 co-relation queries the response was YES. [2022-07-21 08:59:42,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5277 conditions, 4592 events. 451/4592 cut-off events. For 364/452 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 45091 event pairs, 117 based on Foata normal form. 10/4166 useless extension candidates. Maximal degree in co-relation 5270. Up to 246 conditions per place. [2022-07-21 08:59:42,280 INFO L132 encePairwiseOnDemand]: 847/851 looper letters, 36 selfloop transitions, 3 changer transitions 0/816 dead transitions. [2022-07-21 08:59:42,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 755 places, 816 transitions, 1789 flow [2022-07-21 08:59:42,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:59:42,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:59:42,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2416 transitions. [2022-07-21 08:59:42,288 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9463376419898158 [2022-07-21 08:59:42,288 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2416 transitions. [2022-07-21 08:59:42,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2416 transitions. [2022-07-21 08:59:42,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:42,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2416 transitions. [2022-07-21 08:59:42,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 805.3333333333334) internal successors, (2416), 3 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:42,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:42,305 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:42,307 INFO L186 Difference]: Start difference. First operand has 753 places, 800 transitions, 1666 flow. Second operand 3 states and 2416 transitions. [2022-07-21 08:59:42,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 755 places, 816 transitions, 1789 flow [2022-07-21 08:59:42,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 754 places, 816 transitions, 1786 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:59:42,331 INFO L242 Difference]: Finished difference. Result has 756 places, 803 transitions, 1703 flow [2022-07-21 08:59:42,332 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=752, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=797, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1703, PETRI_PLACES=756, PETRI_TRANSITIONS=803} [2022-07-21 08:59:42,335 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 0 predicate places. [2022-07-21 08:59:42,335 INFO L495 AbstractCegarLoop]: Abstraction has has 756 places, 803 transitions, 1703 flow [2022-07-21 08:59:42,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:42,342 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:42,342 INFO L200 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, 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, 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, 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, 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, 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, 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] [2022-07-21 08:59:42,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:59:42,343 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:42,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:42,344 INFO L85 PathProgramCache]: Analyzing trace with hash 418836403, now seen corresponding path program 2 times [2022-07-21 08:59:42,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:42,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518591818] [2022-07-21 08:59:42,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:42,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:42,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:42,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518591818] [2022-07-21 08:59:42,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518591818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:42,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:42,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:59:42,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788830922] [2022-07-21 08:59:42,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:42,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:59:42,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:42,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:59:42,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:59:42,407 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 793 out of 851 [2022-07-21 08:59:42,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 756 places, 803 transitions, 1703 flow. Second operand has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:42,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:42,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 793 of 851 [2022-07-21 08:59:42,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:43,513 INFO L129 PetriNetUnfolder]: 421/4305 cut-off events. [2022-07-21 08:59:43,513 INFO L130 PetriNetUnfolder]: For 619/697 co-relation queries the response was YES. [2022-07-21 08:59:43,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5058 conditions, 4305 events. 421/4305 cut-off events. For 619/697 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 41427 event pairs, 114 based on Foata normal form. 8/3905 useless extension candidates. Maximal degree in co-relation 5050. Up to 228 conditions per place. [2022-07-21 08:59:43,634 INFO L132 encePairwiseOnDemand]: 845/851 looper letters, 36 selfloop transitions, 6 changer transitions 0/818 dead transitions. [2022-07-21 08:59:43,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 758 places, 818 transitions, 1834 flow [2022-07-21 08:59:43,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:59:43,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:59:43,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2416 transitions. [2022-07-21 08:59:43,640 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9463376419898158 [2022-07-21 08:59:43,641 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2416 transitions. [2022-07-21 08:59:43,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2416 transitions. [2022-07-21 08:59:43,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:43,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2416 transitions. [2022-07-21 08:59:43,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 805.3333333333334) internal successors, (2416), 3 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:43,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:43,653 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:43,653 INFO L186 Difference]: Start difference. First operand has 756 places, 803 transitions, 1703 flow. Second operand 3 states and 2416 transitions. [2022-07-21 08:59:43,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 758 places, 818 transitions, 1834 flow [2022-07-21 08:59:43,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 757 places, 818 transitions, 1831 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:59:43,670 INFO L242 Difference]: Finished difference. Result has 759 places, 805 transitions, 1752 flow [2022-07-21 08:59:43,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1694, PETRI_DIFFERENCE_MINUEND_PLACES=755, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=802, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=796, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1752, PETRI_PLACES=759, PETRI_TRANSITIONS=805} [2022-07-21 08:59:43,673 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 3 predicate places. [2022-07-21 08:59:43,673 INFO L495 AbstractCegarLoop]: Abstraction has has 759 places, 805 transitions, 1752 flow [2022-07-21 08:59:43,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:43,674 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:43,674 INFO L200 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, 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, 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, 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, 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, 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, 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] [2022-07-21 08:59:43,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:59:43,675 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:43,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:43,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1693674199, now seen corresponding path program 2 times [2022-07-21 08:59:43,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:43,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222472026] [2022-07-21 08:59:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:43,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:43,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:43,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:43,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222472026] [2022-07-21 08:59:43,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222472026] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:43,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:43,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:59:43,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632987868] [2022-07-21 08:59:43,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:43,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:59:43,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:43,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:59:43,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:59:43,754 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 793 out of 851 [2022-07-21 08:59:43,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 759 places, 805 transitions, 1752 flow. Second operand has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:43,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:43,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 793 of 851 [2022-07-21 08:59:43,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:45,130 INFO L129 PetriNetUnfolder]: 818/7754 cut-off events. [2022-07-21 08:59:45,130 INFO L130 PetriNetUnfolder]: For 852/957 co-relation queries the response was YES. [2022-07-21 08:59:45,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8741 conditions, 7754 events. 818/7754 cut-off events. For 852/957 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 83099 event pairs, 219 based on Foata normal form. 13/6920 useless extension candidates. Maximal degree in co-relation 8732. Up to 408 conditions per place. [2022-07-21 08:59:45,244 INFO L132 encePairwiseOnDemand]: 845/851 looper letters, 34 selfloop transitions, 6 changer transitions 0/817 dead transitions. [2022-07-21 08:59:45,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 761 places, 817 transitions, 1864 flow [2022-07-21 08:59:45,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:59:45,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:59:45,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2415 transitions. [2022-07-21 08:59:45,250 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9459459459459459 [2022-07-21 08:59:45,250 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2415 transitions. [2022-07-21 08:59:45,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2415 transitions. [2022-07-21 08:59:45,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:45,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2415 transitions. [2022-07-21 08:59:45,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 805.0) internal successors, (2415), 3 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:45,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:45,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:45,261 INFO L186 Difference]: Start difference. First operand has 759 places, 805 transitions, 1752 flow. Second operand 3 states and 2415 transitions. [2022-07-21 08:59:45,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 761 places, 817 transitions, 1864 flow [2022-07-21 08:59:45,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 759 places, 817 transitions, 1848 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-21 08:59:45,276 INFO L242 Difference]: Finished difference. Result has 761 places, 805 transitions, 1776 flow [2022-07-21 08:59:45,278 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1722, PETRI_DIFFERENCE_MINUEND_PLACES=757, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=803, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=797, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1776, PETRI_PLACES=761, PETRI_TRANSITIONS=805} [2022-07-21 08:59:45,278 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 5 predicate places. [2022-07-21 08:59:45,278 INFO L495 AbstractCegarLoop]: Abstraction has has 761 places, 805 transitions, 1776 flow [2022-07-21 08:59:45,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:45,279 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:45,280 INFO L200 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, 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, 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, 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, 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, 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, 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] [2022-07-21 08:59:45,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:59:45,280 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:45,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:45,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1000802903, now seen corresponding path program 1 times [2022-07-21 08:59:45,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:45,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933649311] [2022-07-21 08:59:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:45,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:45,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:59:45,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:45,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933649311] [2022-07-21 08:59:45,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933649311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:45,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:45,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:59:45,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405150336] [2022-07-21 08:59:45,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:45,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:59:45,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:45,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:59:45,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:59:45,371 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 774 out of 851 [2022-07-21 08:59:45,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 761 places, 805 transitions, 1776 flow. Second operand has 5 states, 5 states have (on average 779.4) internal successors, (3897), 5 states have internal predecessors, (3897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:45,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:45,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 774 of 851 [2022-07-21 08:59:45,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:45,662 INFO L129 PetriNetUnfolder]: 54/1036 cut-off events. [2022-07-21 08:59:45,662 INFO L130 PetriNetUnfolder]: For 138/176 co-relation queries the response was YES. [2022-07-21 08:59:45,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 1036 events. 54/1036 cut-off events. For 138/176 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5273 event pairs, 0 based on Foata normal form. 0/954 useless extension candidates. Maximal degree in co-relation 1196. Up to 55 conditions per place. [2022-07-21 08:59:45,692 INFO L132 encePairwiseOnDemand]: 836/851 looper letters, 39 selfloop transitions, 12 changer transitions 0/817 dead transitions. [2022-07-21 08:59:45,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 765 places, 817 transitions, 1902 flow [2022-07-21 08:59:45,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:59:45,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:59:45,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3924 transitions. [2022-07-21 08:59:45,701 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9222091656874265 [2022-07-21 08:59:45,701 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3924 transitions. [2022-07-21 08:59:45,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3924 transitions. [2022-07-21 08:59:45,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:45,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3924 transitions. [2022-07-21 08:59:45,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 784.8) internal successors, (3924), 5 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:45,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 851.0) internal successors, (5106), 6 states have internal predecessors, (5106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:45,719 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 851.0) internal successors, (5106), 6 states have internal predecessors, (5106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:45,720 INFO L186 Difference]: Start difference. First operand has 761 places, 805 transitions, 1776 flow. Second operand 5 states and 3924 transitions. [2022-07-21 08:59:45,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 765 places, 817 transitions, 1902 flow [2022-07-21 08:59:45,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 763 places, 817 transitions, 1886 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-21 08:59:45,735 INFO L242 Difference]: Finished difference. Result has 764 places, 808 transitions, 1808 flow [2022-07-21 08:59:45,737 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=759, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=793, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1808, PETRI_PLACES=764, PETRI_TRANSITIONS=808} [2022-07-21 08:59:45,737 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 8 predicate places. [2022-07-21 08:59:45,738 INFO L495 AbstractCegarLoop]: Abstraction has has 764 places, 808 transitions, 1808 flow [2022-07-21 08:59:45,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 779.4) internal successors, (3897), 5 states have internal predecessors, (3897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:45,739 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:45,739 INFO L200 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:45,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:59:45,740 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:45,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:45,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1116757720, now seen corresponding path program 1 times [2022-07-21 08:59:45,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:45,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360466841] [2022-07-21 08:59:45,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:45,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:45,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:59:45,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:45,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360466841] [2022-07-21 08:59:45,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360466841] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:59:45,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897372483] [2022-07-21 08:59:45,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:45,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:59:45,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:59:45,839 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) [2022-07-21 08:59:45,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:59:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:46,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 08:59:46,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:59:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:59:46,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:59:46,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:59:46,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897372483] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:59:46,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:59:46,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-07-21 08:59:46,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669956] [2022-07-21 08:59:46,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:59:46,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 08:59:46,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:46,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 08:59:46,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:59:46,258 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 771 out of 851 [2022-07-21 08:59:46,266 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 764 places, 808 transitions, 1808 flow. Second operand has 15 states, 15 states have (on average 775.0666666666667) internal successors, (11626), 15 states have internal predecessors, (11626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:46,266 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:46,266 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 771 of 851 [2022-07-21 08:59:46,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:46,774 INFO L129 PetriNetUnfolder]: 54/1060 cut-off events. [2022-07-21 08:59:46,775 INFO L130 PetriNetUnfolder]: For 127/164 co-relation queries the response was YES. [2022-07-21 08:59:46,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1271 conditions, 1060 events. 54/1060 cut-off events. For 127/164 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5282 event pairs, 0 based on Foata normal form. 6/987 useless extension candidates. Maximal degree in co-relation 1260. Up to 46 conditions per place. [2022-07-21 08:59:46,805 INFO L132 encePairwiseOnDemand]: 827/851 looper letters, 42 selfloop transitions, 33 changer transitions 0/838 dead transitions. [2022-07-21 08:59:46,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 774 places, 838 transitions, 2024 flow [2022-07-21 08:59:46,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:59:46,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:59:46,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 8562 transitions. [2022-07-21 08:59:46,820 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9146458711676103 [2022-07-21 08:59:46,821 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 8562 transitions. [2022-07-21 08:59:46,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 8562 transitions. [2022-07-21 08:59:46,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:46,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 8562 transitions. [2022-07-21 08:59:46,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 778.3636363636364) internal successors, (8562), 11 states have internal predecessors, (8562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:46,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 851.0) internal successors, (10212), 12 states have internal predecessors, (10212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:46,856 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 851.0) internal successors, (10212), 12 states have internal predecessors, (10212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:46,856 INFO L186 Difference]: Start difference. First operand has 764 places, 808 transitions, 1808 flow. Second operand 11 states and 8562 transitions. [2022-07-21 08:59:46,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 774 places, 838 transitions, 2024 flow [2022-07-21 08:59:46,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 771 places, 838 transitions, 2006 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-21 08:59:46,871 INFO L242 Difference]: Finished difference. Result has 774 places, 826 transitions, 1957 flow [2022-07-21 08:59:46,872 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=761, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=784, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1957, PETRI_PLACES=774, PETRI_TRANSITIONS=826} [2022-07-21 08:59:46,873 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 18 predicate places. [2022-07-21 08:59:46,873 INFO L495 AbstractCegarLoop]: Abstraction has has 774 places, 826 transitions, 1957 flow [2022-07-21 08:59:46,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 775.0666666666667) internal successors, (11626), 15 states have internal predecessors, (11626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:46,876 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:46,876 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:46,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 08:59:47,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:59:47,100 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:47,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:47,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1111309818, now seen corresponding path program 2 times [2022-07-21 08:59:47,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:47,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833879850] [2022-07-21 08:59:47,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:47,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:47,272 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 08:59:47,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:47,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833879850] [2022-07-21 08:59:47,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833879850] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:59:47,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218929208] [2022-07-21 08:59:47,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 08:59:47,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:59:47,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:59:47,278 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) [2022-07-21 08:59:47,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 08:59:47,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 08:59:47,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 08:59:47,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 08:59:47,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:59:47,575 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-21 08:59:47,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:59:47,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218929208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:47,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:59:47,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-07-21 08:59:47,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114760322] [2022-07-21 08:59:47,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:47,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:59:47,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:47,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:59:47,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:59:47,582 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 755 out of 851 [2022-07-21 08:59:47,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 774 places, 826 transitions, 1957 flow. Second operand has 5 states, 5 states have (on average 758.6) internal successors, (3793), 5 states have internal predecessors, (3793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:47,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:47,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 755 of 851 [2022-07-21 08:59:47,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:49,704 INFO L129 PetriNetUnfolder]: 1215/6548 cut-off events. [2022-07-21 08:59:49,704 INFO L130 PetriNetUnfolder]: For 2731/3114 co-relation queries the response was YES. [2022-07-21 08:59:49,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9567 conditions, 6548 events. 1215/6548 cut-off events. For 2731/3114 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 69122 event pairs, 494 based on Foata normal form. 1/5846 useless extension candidates. Maximal degree in co-relation 9553. Up to 1088 conditions per place. [2022-07-21 08:59:49,947 INFO L132 encePairwiseOnDemand]: 838/851 looper letters, 107 selfloop transitions, 23 changer transitions 6/896 dead transitions. [2022-07-21 08:59:49,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 780 places, 896 transitions, 2413 flow [2022-07-21 08:59:49,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:59:49,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 08:59:49,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 5414 transitions. [2022-07-21 08:59:49,954 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9088467349336915 [2022-07-21 08:59:49,954 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 5414 transitions. [2022-07-21 08:59:49,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 5414 transitions. [2022-07-21 08:59:49,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:49,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 5414 transitions. [2022-07-21 08:59:49,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 773.4285714285714) internal successors, (5414), 7 states have internal predecessors, (5414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:49,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 851.0) internal successors, (6808), 8 states have internal predecessors, (6808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:49,975 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 851.0) internal successors, (6808), 8 states have internal predecessors, (6808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:49,975 INFO L186 Difference]: Start difference. First operand has 774 places, 826 transitions, 1957 flow. Second operand 7 states and 5414 transitions. [2022-07-21 08:59:49,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 780 places, 896 transitions, 2413 flow [2022-07-21 08:59:49,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 777 places, 896 transitions, 2388 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-07-21 08:59:49,998 INFO L242 Difference]: Finished difference. Result has 780 places, 838 transitions, 2035 flow [2022-07-21 08:59:49,999 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1932, PETRI_DIFFERENCE_MINUEND_PLACES=771, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=812, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2035, PETRI_PLACES=780, PETRI_TRANSITIONS=838} [2022-07-21 08:59:50,000 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 24 predicate places. [2022-07-21 08:59:50,000 INFO L495 AbstractCegarLoop]: Abstraction has has 780 places, 838 transitions, 2035 flow [2022-07-21 08:59:50,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 758.6) internal successors, (3793), 5 states have internal predecessors, (3793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:50,002 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:50,002 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:50,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 08:59:50,215 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,SelfDestructingSolverStorable9 [2022-07-21 08:59:50,216 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:50,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:50,216 INFO L85 PathProgramCache]: Analyzing trace with hash -431051682, now seen corresponding path program 3 times [2022-07-21 08:59:50,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:50,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152987704] [2022-07-21 08:59:50,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:50,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:50,363 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 08:59:50,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:50,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152987704] [2022-07-21 08:59:50,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152987704] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:59:50,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547443350] [2022-07-21 08:59:50,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 08:59:50,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:59:50,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:59:50,365 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) [2022-07-21 08:59:50,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 08:59:50,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-21 08:59:50,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 08:59:50,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 08:59:50,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:59:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-21 08:59:50,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:59:50,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547443350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:50,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:59:50,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-07-21 08:59:50,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799468301] [2022-07-21 08:59:50,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:50,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:59:50,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:50,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:59:50,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:59:50,684 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 755 out of 851 [2022-07-21 08:59:50,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 838 transitions, 2035 flow. Second operand has 5 states, 5 states have (on average 758.6) internal successors, (3793), 5 states have internal predecessors, (3793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:50,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:50,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 755 of 851 [2022-07-21 08:59:50,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:52,712 INFO L129 PetriNetUnfolder]: 1299/7091 cut-off events. [2022-07-21 08:59:52,712 INFO L130 PetriNetUnfolder]: For 3820/4242 co-relation queries the response was YES. [2022-07-21 08:59:52,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10346 conditions, 7091 events. 1299/7091 cut-off events. For 3820/4242 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 76494 event pairs, 324 based on Foata normal form. 50/6514 useless extension candidates. Maximal degree in co-relation 10329. Up to 815 conditions per place. [2022-07-21 08:59:52,901 INFO L132 encePairwiseOnDemand]: 824/851 looper letters, 130 selfloop transitions, 43 changer transitions 3/936 dead transitions. [2022-07-21 08:59:52,901 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 788 places, 936 transitions, 2758 flow [2022-07-21 08:59:52,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:59:52,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:59:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 6948 transitions. [2022-07-21 08:59:52,912 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9071680376028202 [2022-07-21 08:59:52,912 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 6948 transitions. [2022-07-21 08:59:52,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 6948 transitions. [2022-07-21 08:59:52,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:52,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 6948 transitions. [2022-07-21 08:59:52,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 772.0) internal successors, (6948), 9 states have internal predecessors, (6948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:52,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 851.0) internal successors, (8510), 10 states have internal predecessors, (8510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:52,932 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 851.0) internal successors, (8510), 10 states have internal predecessors, (8510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:52,932 INFO L186 Difference]: Start difference. First operand has 780 places, 838 transitions, 2035 flow. Second operand 9 states and 6948 transitions. [2022-07-21 08:59:52,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 788 places, 936 transitions, 2758 flow [2022-07-21 08:59:52,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 788 places, 936 transitions, 2758 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:59:52,957 INFO L242 Difference]: Finished difference. Result has 792 places, 864 transitions, 2357 flow [2022-07-21 08:59:52,959 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=2035, PETRI_DIFFERENCE_MINUEND_PLACES=780, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=838, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=805, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2357, PETRI_PLACES=792, PETRI_TRANSITIONS=864} [2022-07-21 08:59:52,959 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 36 predicate places. [2022-07-21 08:59:52,960 INFO L495 AbstractCegarLoop]: Abstraction has has 792 places, 864 transitions, 2357 flow [2022-07-21 08:59:52,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 758.6) internal successors, (3793), 5 states have internal predecessors, (3793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:52,961 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:52,961 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:59:52,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 08:59:53,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:59:53,183 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:53,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:53,184 INFO L85 PathProgramCache]: Analyzing trace with hash -963379392, now seen corresponding path program 4 times [2022-07-21 08:59:53,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:53,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312955213] [2022-07-21 08:59:53,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:53,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:53,345 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 08:59:53,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:53,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312955213] [2022-07-21 08:59:53,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312955213] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:59:53,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426592005] [2022-07-21 08:59:53,347 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-21 08:59:53,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:59:53,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:59:53,348 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) [2022-07-21 08:59:53,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 08:59:53,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-21 08:59:53,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 08:59:53,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 08:59:53,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:59:53,697 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 08:59:53,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:59:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 08:59:53,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426592005] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:59:53,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:59:53,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-07-21 08:59:53,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083795384] [2022-07-21 08:59:53,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:59:53,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 08:59:53,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:53,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 08:59:53,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-07-21 08:59:53,806 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 771 out of 851 [2022-07-21 08:59:53,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 792 places, 864 transitions, 2357 flow. Second operand has 22 states, 22 states have (on average 774.6818181818181) internal successors, (17043), 22 states have internal predecessors, (17043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:53,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:53,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 771 of 851 [2022-07-21 08:59:53,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:54,676 INFO L129 PetriNetUnfolder]: 141/1937 cut-off events. [2022-07-21 08:59:54,676 INFO L130 PetriNetUnfolder]: For 1145/1261 co-relation queries the response was YES. [2022-07-21 08:59:54,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2815 conditions, 1937 events. 141/1937 cut-off events. For 1145/1261 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 13984 event pairs, 7 based on Foata normal form. 6/1826 useless extension candidates. Maximal degree in co-relation 2793. Up to 80 conditions per place. [2022-07-21 08:59:54,735 INFO L132 encePairwiseOnDemand]: 827/851 looper letters, 54 selfloop transitions, 51 changer transitions 0/906 dead transitions. [2022-07-21 08:59:54,735 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 808 places, 906 transitions, 2735 flow [2022-07-21 08:59:54,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:59:54,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 08:59:54,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 13218 transitions. [2022-07-21 08:59:54,750 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9136655837423101 [2022-07-21 08:59:54,750 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 13218 transitions. [2022-07-21 08:59:54,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 13218 transitions. [2022-07-21 08:59:54,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:54,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 13218 transitions. [2022-07-21 08:59:54,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 777.5294117647059) internal successors, (13218), 17 states have internal predecessors, (13218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:54,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 851.0) internal successors, (15318), 18 states have internal predecessors, (15318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:54,780 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 851.0) internal successors, (15318), 18 states have internal predecessors, (15318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:54,780 INFO L186 Difference]: Start difference. First operand has 792 places, 864 transitions, 2357 flow. Second operand 17 states and 13218 transitions. [2022-07-21 08:59:54,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 808 places, 906 transitions, 2735 flow [2022-07-21 08:59:54,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 808 places, 906 transitions, 2729 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-07-21 08:59:54,800 INFO L242 Difference]: Finished difference. Result has 811 places, 885 transitions, 2614 flow [2022-07-21 08:59:54,801 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=2351, PETRI_DIFFERENCE_MINUEND_PLACES=792, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=864, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=825, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2614, PETRI_PLACES=811, PETRI_TRANSITIONS=885} [2022-07-21 08:59:54,802 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 55 predicate places. [2022-07-21 08:59:54,802 INFO L495 AbstractCegarLoop]: Abstraction has has 811 places, 885 transitions, 2614 flow [2022-07-21 08:59:54,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 774.6818181818181) internal successors, (17043), 22 states have internal predecessors, (17043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:54,804 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:54,804 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 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, 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, 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] [2022-07-21 08:59:54,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 08:59:55,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:59:55,018 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:55,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:55,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1828856430, now seen corresponding path program 5 times [2022-07-21 08:59:55,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:55,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541395649] [2022-07-21 08:59:55,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:55,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:55,134 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-21 08:59:55,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:55,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541395649] [2022-07-21 08:59:55,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541395649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:55,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:55,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:59:55,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636067853] [2022-07-21 08:59:55,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:55,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:59:55,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:55,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:59:55,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:59:55,139 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 790 out of 851 [2022-07-21 08:59:55,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 811 places, 885 transitions, 2614 flow. Second operand has 3 states, 3 states have (on average 793.6666666666666) internal successors, (2381), 3 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:55,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:55,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 790 of 851 [2022-07-21 08:59:55,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:56,366 INFO L129 PetriNetUnfolder]: 565/4809 cut-off events. [2022-07-21 08:59:56,366 INFO L130 PetriNetUnfolder]: For 1623/1770 co-relation queries the response was YES. [2022-07-21 08:59:56,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6813 conditions, 4809 events. 565/4809 cut-off events. For 1623/1770 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 44074 event pairs, 150 based on Foata normal form. 1/4410 useless extension candidates. Maximal degree in co-relation 6787. Up to 444 conditions per place. [2022-07-21 08:59:56,447 INFO L132 encePairwiseOnDemand]: 846/851 looper letters, 27 selfloop transitions, 4 changer transitions 0/893 dead transitions. [2022-07-21 08:59:56,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 813 places, 893 transitions, 2695 flow [2022-07-21 08:59:56,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:59:56,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:59:56,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2402 transitions. [2022-07-21 08:59:56,453 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9408538973756365 [2022-07-21 08:59:56,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2402 transitions. [2022-07-21 08:59:56,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2402 transitions. [2022-07-21 08:59:56,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:56,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2402 transitions. [2022-07-21 08:59:56,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 800.6666666666666) internal successors, (2402), 3 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:56,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:56,460 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:56,461 INFO L186 Difference]: Start difference. First operand has 811 places, 885 transitions, 2614 flow. Second operand 3 states and 2402 transitions. [2022-07-21 08:59:56,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 813 places, 893 transitions, 2695 flow [2022-07-21 08:59:56,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 805 places, 893 transitions, 2628 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-07-21 08:59:56,482 INFO L242 Difference]: Finished difference. Result has 806 places, 886 transitions, 2565 flow [2022-07-21 08:59:56,484 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=2547, PETRI_DIFFERENCE_MINUEND_PLACES=803, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=885, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=881, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2565, PETRI_PLACES=806, PETRI_TRANSITIONS=886} [2022-07-21 08:59:56,485 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 50 predicate places. [2022-07-21 08:59:56,485 INFO L495 AbstractCegarLoop]: Abstraction has has 806 places, 886 transitions, 2565 flow [2022-07-21 08:59:56,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 793.6666666666666) internal successors, (2381), 3 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:56,486 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:56,486 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 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, 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, 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] [2022-07-21 08:59:56,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:59:56,487 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:56,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:56,488 INFO L85 PathProgramCache]: Analyzing trace with hash 580304936, now seen corresponding path program 1 times [2022-07-21 08:59:56,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:56,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212859421] [2022-07-21 08:59:56,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:56,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:56,592 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-21 08:59:56,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:56,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212859421] [2022-07-21 08:59:56,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212859421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:56,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:56,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:59:56,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110007458] [2022-07-21 08:59:56,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:56,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:59:56,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:56,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:59:56,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:59:56,597 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 790 out of 851 [2022-07-21 08:59:56,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 806 places, 886 transitions, 2565 flow. Second operand has 3 states, 3 states have (on average 793.6666666666666) internal successors, (2381), 3 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:56,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:56,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 790 of 851 [2022-07-21 08:59:56,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:59:59,339 INFO L129 PetriNetUnfolder]: 648/8909 cut-off events. [2022-07-21 08:59:59,340 INFO L130 PetriNetUnfolder]: For 2575/2890 co-relation queries the response was YES. [2022-07-21 08:59:59,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11348 conditions, 8909 events. 648/8909 cut-off events. For 2575/2890 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 91436 event pairs, 33 based on Foata normal form. 0/8218 useless extension candidates. Maximal degree in co-relation 11321. Up to 191 conditions per place. [2022-07-21 08:59:59,676 INFO L132 encePairwiseOnDemand]: 846/851 looper letters, 29 selfloop transitions, 4 changer transitions 0/896 dead transitions. [2022-07-21 08:59:59,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 808 places, 896 transitions, 2656 flow [2022-07-21 08:59:59,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:59:59,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:59:59,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2404 transitions. [2022-07-21 08:59:59,681 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9416372894633764 [2022-07-21 08:59:59,681 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2404 transitions. [2022-07-21 08:59:59,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2404 transitions. [2022-07-21 08:59:59,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:59:59,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2404 transitions. [2022-07-21 08:59:59,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 801.3333333333334) internal successors, (2404), 3 states have internal predecessors, (2404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:59,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:59,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:59,687 INFO L186 Difference]: Start difference. First operand has 806 places, 886 transitions, 2565 flow. Second operand 3 states and 2404 transitions. [2022-07-21 08:59:59,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 808 places, 896 transitions, 2656 flow [2022-07-21 08:59:59,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 807 places, 896 transitions, 2652 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:59:59,732 INFO L242 Difference]: Finished difference. Result has 808 places, 887 transitions, 2579 flow [2022-07-21 08:59:59,733 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=2561, PETRI_DIFFERENCE_MINUEND_PLACES=805, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=886, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=882, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2579, PETRI_PLACES=808, PETRI_TRANSITIONS=887} [2022-07-21 08:59:59,734 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 52 predicate places. [2022-07-21 08:59:59,734 INFO L495 AbstractCegarLoop]: Abstraction has has 808 places, 887 transitions, 2579 flow [2022-07-21 08:59:59,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 793.6666666666666) internal successors, (2381), 3 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:59,735 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:59:59,735 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 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, 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, 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] [2022-07-21 08:59:59,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:59:59,738 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:59:59,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:59:59,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1020819837, now seen corresponding path program 1 times [2022-07-21 08:59:59,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:59:59,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483515670] [2022-07-21 08:59:59,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:59:59,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:59:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:59:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-21 08:59:59,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:59:59,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483515670] [2022-07-21 08:59:59,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483515670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:59:59,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:59:59,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:59:59,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630437707] [2022-07-21 08:59:59,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:59:59,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:59:59,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:59:59,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:59:59,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:59:59,838 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 790 out of 851 [2022-07-21 08:59:59,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 887 transitions, 2579 flow. Second operand has 3 states, 3 states have (on average 793.6666666666666) internal successors, (2381), 3 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:59:59,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:59:59,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 790 of 851 [2022-07-21 08:59:59,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:04,326 INFO L129 PetriNetUnfolder]: 1546/15080 cut-off events. [2022-07-21 09:00:04,327 INFO L130 PetriNetUnfolder]: For 8851/9301 co-relation queries the response was YES. [2022-07-21 09:00:04,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22486 conditions, 15080 events. 1546/15080 cut-off events. For 8851/9301 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 179433 event pairs, 219 based on Foata normal form. 5/14016 useless extension candidates. Maximal degree in co-relation 22458. Up to 578 conditions per place. [2022-07-21 09:00:04,775 INFO L132 encePairwiseOnDemand]: 846/851 looper letters, 28 selfloop transitions, 4 changer transitions 0/896 dead transitions. [2022-07-21 09:00:04,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 810 places, 896 transitions, 2665 flow [2022-07-21 09:00:04,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:00:04,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:00:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2403 transitions. [2022-07-21 09:00:04,779 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9412455934195064 [2022-07-21 09:00:04,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2403 transitions. [2022-07-21 09:00:04,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2403 transitions. [2022-07-21 09:00:04,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:04,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2403 transitions. [2022-07-21 09:00:04,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 801.0) internal successors, (2403), 3 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:04,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:04,785 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:04,785 INFO L186 Difference]: Start difference. First operand has 808 places, 887 transitions, 2579 flow. Second operand 3 states and 2403 transitions. [2022-07-21 09:00:04,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 810 places, 896 transitions, 2665 flow [2022-07-21 09:00:04,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 809 places, 896 transitions, 2661 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 09:00:04,828 INFO L242 Difference]: Finished difference. Result has 810 places, 888 transitions, 2593 flow [2022-07-21 09:00:04,830 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=2575, PETRI_DIFFERENCE_MINUEND_PLACES=807, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=887, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=883, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2593, PETRI_PLACES=810, PETRI_TRANSITIONS=888} [2022-07-21 09:00:04,831 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 54 predicate places. [2022-07-21 09:00:04,831 INFO L495 AbstractCegarLoop]: Abstraction has has 810 places, 888 transitions, 2593 flow [2022-07-21 09:00:04,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 793.6666666666666) internal successors, (2381), 3 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:04,832 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:04,832 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:04,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 09:00:04,832 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:00:04,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:04,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1764552010, now seen corresponding path program 1 times [2022-07-21 09:00:04,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:04,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211255113] [2022-07-21 09:00:04,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:04,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:05,029 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-21 09:00:05,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:05,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211255113] [2022-07-21 09:00:05,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211255113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:05,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:05,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:00:05,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730727092] [2022-07-21 09:00:05,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:05,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:00:05,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:05,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:00:05,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:00:05,035 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 736 out of 851 [2022-07-21 09:00:05,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 810 places, 888 transitions, 2593 flow. Second operand has 7 states, 7 states have (on average 742.4285714285714) internal successors, (5197), 7 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:05,038 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:05,038 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 736 of 851 [2022-07-21 09:00:05,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:00:28,464 INFO L129 PetriNetUnfolder]: 19382/93692 cut-off events. [2022-07-21 09:00:28,464 INFO L130 PetriNetUnfolder]: For 10726/10953 co-relation queries the response was YES. [2022-07-21 09:00:29,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127385 conditions, 93692 events. 19382/93692 cut-off events. For 10726/10953 co-relation queries the response was YES. Maximal size of possible extension queue 1655. Compared 1409854 event pairs, 8501 based on Foata normal form. 11/84001 useless extension candidates. Maximal degree in co-relation 127356. Up to 17086 conditions per place. [2022-07-21 09:00:30,370 INFO L132 encePairwiseOnDemand]: 845/851 looper letters, 131 selfloop transitions, 3 changer transitions 4/956 dead transitions. [2022-07-21 09:00:30,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 816 places, 956 transitions, 3014 flow [2022-07-21 09:00:30,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:00:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 09:00:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 5291 transitions. [2022-07-21 09:00:30,376 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8881987577639752 [2022-07-21 09:00:30,376 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 5291 transitions. [2022-07-21 09:00:30,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 5291 transitions. [2022-07-21 09:00:30,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:00:30,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 5291 transitions. [2022-07-21 09:00:30,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 755.8571428571429) internal successors, (5291), 7 states have internal predecessors, (5291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:30,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 851.0) internal successors, (6808), 8 states have internal predecessors, (6808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:30,391 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 851.0) internal successors, (6808), 8 states have internal predecessors, (6808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:30,391 INFO L186 Difference]: Start difference. First operand has 810 places, 888 transitions, 2593 flow. Second operand 7 states and 5291 transitions. [2022-07-21 09:00:30,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 816 places, 956 transitions, 3014 flow [2022-07-21 09:00:30,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 815 places, 956 transitions, 3010 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 09:00:30,571 INFO L242 Difference]: Finished difference. Result has 820 places, 890 transitions, 2614 flow [2022-07-21 09:00:30,571 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=2589, PETRI_DIFFERENCE_MINUEND_PLACES=809, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=888, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=885, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2614, PETRI_PLACES=820, PETRI_TRANSITIONS=890} [2022-07-21 09:00:30,572 INFO L279 CegarLoopForPetriNet]: 756 programPoint places, 64 predicate places. [2022-07-21 09:00:30,572 INFO L495 AbstractCegarLoop]: Abstraction has has 820 places, 890 transitions, 2614 flow [2022-07-21 09:00:30,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 742.4285714285714) internal successors, (5197), 7 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:30,573 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:00:30,573 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:00:30,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 09:00:30,574 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:00:30,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:00:30,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1836179780, now seen corresponding path program 1 times [2022-07-21 09:00:30,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:00:30,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268618586] [2022-07-21 09:00:30,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:00:30,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:00:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:00:30,763 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-21 09:00:30,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:00:30,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268618586] [2022-07-21 09:00:30,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268618586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:00:30,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:00:30,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:00:30,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627461837] [2022-07-21 09:00:30,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:00:30,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:00:30,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:00:30,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:00:30,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:00:30,770 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 747 out of 851 [2022-07-21 09:00:30,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 820 places, 890 transitions, 2614 flow. Second operand has 6 states, 6 states have (on average 751.6666666666666) internal successors, (4510), 6 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:00:30,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:00:30,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 747 of 851 [2022-07-21 09:00:30,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand