./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/popl20-more-buffer-series2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:50:25,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:50:25,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:50:25,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:50:25,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:50:25,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:50:25,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:50:25,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:50:25,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:50:25,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:50:25,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:50:25,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:50:25,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:50:25,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:50:25,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:50:25,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:50:25,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:50:25,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:50:25,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:50:25,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:50:25,231 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:50:25,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:50:25,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:50:25,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:50:25,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:50:25,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:50:25,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:50:25,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:50:25,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:50:25,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:50:25,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:50:25,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:50:25,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:50:25,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:50:25,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:50:25,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:50:25,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:50:25,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:50:25,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:50:25,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:50:25,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:50:25,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:50:25,247 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:50:25,277 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:50:25,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:50:25,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:50:25,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:50:25,283 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:50:25,283 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:50:25,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:50:25,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:50:25,284 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:50:25,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:50:25,285 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:50:25,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:50:25,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:50:25,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:50:25,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:50:25,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:50:25,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:50:25,286 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:50:25,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:50:25,288 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:50:25,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:50:25,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:50:25,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:50:25,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:50:25,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:50:25,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:50:25,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:50:25,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:50:25,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:50:25,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:50:25,290 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:50:25,290 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:50:25,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:50:25,291 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc [2022-07-22 21:50:25,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:50:25,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:50:25,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:50:25,591 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:50:25,592 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:50:25,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2022-07-22 21:50:25,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a324547d/093ba6ce433941cdbe363146b77a4a37/FLAGf4f503665 [2022-07-22 21:50:26,068 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:50:26,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2022-07-22 21:50:26,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a324547d/093ba6ce433941cdbe363146b77a4a37/FLAGf4f503665 [2022-07-22 21:50:26,458 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a324547d/093ba6ce433941cdbe363146b77a4a37 [2022-07-22 21:50:26,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:50:26,461 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:50:26,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:50:26,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:50:26,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:50:26,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:50:26" (1/1) ... [2022-07-22 21:50:26,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e33eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:50:26, skipping insertion in model container [2022-07-22 21:50:26,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:50:26" (1/1) ... [2022-07-22 21:50:26,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:50:26,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:50:26,679 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/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-07-22 21:50:26,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:50:26,693 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:50:26,717 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/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-07-22 21:50:26,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:50:26,733 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:50:26,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:50:26 WrapperNode [2022-07-22 21:50:26,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:50:26,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:50:26,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:50:26,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:50:26,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:50:26" (1/1) ... [2022-07-22 21:50:26,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:50:26" (1/1) ... [2022-07-22 21:50:26,780 INFO L137 Inliner]: procedures = 27, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 346 [2022-07-22 21:50:26,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:50:26,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:50:26,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:50:26,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:50:26,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:50:26" (1/1) ... [2022-07-22 21:50:26,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:50:26" (1/1) ... [2022-07-22 21:50:26,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:50:26" (1/1) ... [2022-07-22 21:50:26,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:50:26" (1/1) ... [2022-07-22 21:50:26,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:50:26" (1/1) ... [2022-07-22 21:50:26,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:50:26" (1/1) ... [2022-07-22 21:50:26,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:50:26" (1/1) ... [2022-07-22 21:50:26,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:50:26,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:50:26,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:50:26,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:50:26,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:50:26" (1/1) ... [2022-07-22 21:50:26,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:50:26,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:50:26,858 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) [2022-07-22 21:50:26,860 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 [2022-07-22 21:50:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:50:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:50:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:50:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:50:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:50:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:50:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:50:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:50:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-22 21:50:26,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-22 21:50:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-22 21:50:26,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-22 21:50:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:50:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:50:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:50:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 21:50:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:50:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:50:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:50:26,892 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:50:27,045 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:50:27,047 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:50:27,536 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:50:27,737 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:50:27,738 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-07-22 21:50:27,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:50:27 BoogieIcfgContainer [2022-07-22 21:50:27,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:50:27,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:50:27,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:50:27,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:50:27,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:50:26" (1/3) ... [2022-07-22 21:50:27,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bb1e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:50:27, skipping insertion in model container [2022-07-22 21:50:27,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:50:26" (2/3) ... [2022-07-22 21:50:27,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bb1e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:50:27, skipping insertion in model container [2022-07-22 21:50:27,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:50:27" (3/3) ... [2022-07-22 21:50:27,751 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2022-07-22 21:50:27,757 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:50:27,765 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:50:27,765 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:50:27,765 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:50:27,841 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-22 21:50:27,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 256 places, 265 transitions, 562 flow [2022-07-22 21:50:28,028 INFO L129 PetriNetUnfolder]: 22/261 cut-off events. [2022-07-22 21:50:28,030 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-22 21:50:28,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 261 events. 22/261 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 127 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 222. Up to 2 conditions per place. [2022-07-22 21:50:28,036 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 265 transitions, 562 flow [2022-07-22 21:50:28,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 248 transitions, 520 flow [2022-07-22 21:50:28,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:50:28,066 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@5454a6a5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@49f82b4d [2022-07-22 21:50:28,066 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-22 21:50:28,120 INFO L129 PetriNetUnfolder]: 22/247 cut-off events. [2022-07-22 21:50:28,121 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-22 21:50:28,121 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:50:28,122 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] [2022-07-22 21:50:28,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:50:28,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:50:28,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1345971942, now seen corresponding path program 1 times [2022-07-22 21:50:28,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:50:28,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525529779] [2022-07-22 21:50:28,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:50:28,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:50:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:50:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:50:28,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:50:28,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525529779] [2022-07-22 21:50:28,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525529779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:50:28,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:50:28,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:50:28,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017989832] [2022-07-22 21:50:28,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:50:28,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:50:28,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:50:28,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:50:28,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:50:28,471 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 265 [2022-07-22 21:50:28,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 248 transitions, 520 flow. Second operand has 2 states, 2 states have (on average 243.0) internal successors, (486), 2 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:28,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:50:28,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 265 [2022-07-22 21:50:28,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:50:28,655 INFO L129 PetriNetUnfolder]: 124/548 cut-off events. [2022-07-22 21:50:28,655 INFO L130 PetriNetUnfolder]: For 106/107 co-relation queries the response was YES. [2022-07-22 21:50:28,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 548 events. 124/548 cut-off events. For 106/107 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1708 event pairs, 51 based on Foata normal form. 128/613 useless extension candidates. Maximal degree in co-relation 504. Up to 163 conditions per place. [2022-07-22 21:50:28,664 INFO L132 encePairwiseOnDemand]: 250/265 looper letters, 12 selfloop transitions, 0 changer transitions 8/233 dead transitions. [2022-07-22 21:50:28,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 233 transitions, 514 flow [2022-07-22 21:50:28,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:50:28,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-22 21:50:28,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 501 transitions. [2022-07-22 21:50:28,683 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9452830188679245 [2022-07-22 21:50:28,683 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 501 transitions. [2022-07-22 21:50:28,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 501 transitions. [2022-07-22 21:50:28,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:50:28,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 501 transitions. [2022-07-22 21:50:28,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:28,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:28,701 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:28,703 INFO L186 Difference]: Start difference. First operand has 239 places, 248 transitions, 520 flow. Second operand 2 states and 501 transitions. [2022-07-22 21:50:28,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 233 transitions, 514 flow [2022-07-22 21:50:28,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 233 transitions, 498 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-22 21:50:28,716 INFO L242 Difference]: Finished difference. Result has 232 places, 225 transitions, 458 flow [2022-07-22 21:50:28,718 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=458, PETRI_PLACES=232, PETRI_TRANSITIONS=225} [2022-07-22 21:50:28,725 INFO L279 CegarLoopForPetriNet]: 239 programPoint places, -7 predicate places. [2022-07-22 21:50:28,725 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 225 transitions, 458 flow [2022-07-22 21:50:28,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 243.0) internal successors, (486), 2 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:28,726 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:50:28,727 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] [2022-07-22 21:50:28,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:50:28,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:50:28,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:50:28,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1432313826, now seen corresponding path program 1 times [2022-07-22 21:50:28,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:50:28,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328137709] [2022-07-22 21:50:28,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:50:28,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:50:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:50:29,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:50:29,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:50:29,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328137709] [2022-07-22 21:50:29,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328137709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:50:29,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:50:29,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:50:29,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904580907] [2022-07-22 21:50:29,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:50:29,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:50:29,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:50:29,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:50:29,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:50:29,140 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 265 [2022-07-22 21:50:29,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 225 transitions, 458 flow. Second operand has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:29,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:50:29,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 265 [2022-07-22 21:50:29,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:50:29,337 INFO L129 PetriNetUnfolder]: 134/552 cut-off events. [2022-07-22 21:50:29,338 INFO L130 PetriNetUnfolder]: For 31/32 co-relation queries the response was YES. [2022-07-22 21:50:29,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 552 events. 134/552 cut-off events. For 31/32 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1651 event pairs, 14 based on Foata normal form. 1/511 useless extension candidates. Maximal degree in co-relation 775. Up to 133 conditions per place. [2022-07-22 21:50:29,346 INFO L132 encePairwiseOnDemand]: 259/265 looper letters, 50 selfloop transitions, 3 changer transitions 4/237 dead transitions. [2022-07-22 21:50:29,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 237 transitions, 601 flow [2022-07-22 21:50:29,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:50:29,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:50:29,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1038 transitions. [2022-07-22 21:50:29,350 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7833962264150943 [2022-07-22 21:50:29,351 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1038 transitions. [2022-07-22 21:50:29,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1038 transitions. [2022-07-22 21:50:29,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:50:29,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1038 transitions. [2022-07-22 21:50:29,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 207.6) internal successors, (1038), 5 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:29,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:29,359 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:29,359 INFO L186 Difference]: Start difference. First operand has 232 places, 225 transitions, 458 flow. Second operand 5 states and 1038 transitions. [2022-07-22 21:50:29,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 237 transitions, 601 flow [2022-07-22 21:50:29,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 237 transitions, 601 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:50:29,369 INFO L242 Difference]: Finished difference. Result has 231 places, 227 transitions, 481 flow [2022-07-22 21:50:29,369 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=481, PETRI_PLACES=231, PETRI_TRANSITIONS=227} [2022-07-22 21:50:29,370 INFO L279 CegarLoopForPetriNet]: 239 programPoint places, -8 predicate places. [2022-07-22 21:50:29,370 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 227 transitions, 481 flow [2022-07-22 21:50:29,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:29,371 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:50:29,372 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] [2022-07-22 21:50:29,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:50:29,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:50:29,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:50:29,374 INFO L85 PathProgramCache]: Analyzing trace with hash 143055603, now seen corresponding path program 1 times [2022-07-22 21:50:29,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:50:29,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83392708] [2022-07-22 21:50:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:50:29,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:50:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:50:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:50:29,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:50:29,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83392708] [2022-07-22 21:50:29,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83392708] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:50:29,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:50:29,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:50:29,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000850451] [2022-07-22 21:50:29,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:50:29,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:50:29,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:50:29,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:50:29,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:50:29,523 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 265 [2022-07-22 21:50:29,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 227 transitions, 481 flow. Second operand has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:29,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:50:29,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 265 [2022-07-22 21:50:29,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:50:29,662 INFO L129 PetriNetUnfolder]: 208/757 cut-off events. [2022-07-22 21:50:29,663 INFO L130 PetriNetUnfolder]: For 138/140 co-relation queries the response was YES. [2022-07-22 21:50:29,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1188 conditions, 757 events. 208/757 cut-off events. For 138/140 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3014 event pairs, 36 based on Foata normal form. 13/694 useless extension candidates. Maximal degree in co-relation 1181. Up to 207 conditions per place. [2022-07-22 21:50:29,669 INFO L132 encePairwiseOnDemand]: 262/265 looper letters, 30 selfloop transitions, 2 changer transitions 0/239 dead transitions. [2022-07-22 21:50:29,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 239 transitions, 581 flow [2022-07-22 21:50:29,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:50:29,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:50:29,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 723 transitions. [2022-07-22 21:50:29,672 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.909433962264151 [2022-07-22 21:50:29,672 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 723 transitions. [2022-07-22 21:50:29,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 723 transitions. [2022-07-22 21:50:29,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:50:29,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 723 transitions. [2022-07-22 21:50:29,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:29,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:29,677 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:29,677 INFO L186 Difference]: Start difference. First operand has 231 places, 227 transitions, 481 flow. Second operand 3 states and 723 transitions. [2022-07-22 21:50:29,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 239 transitions, 581 flow [2022-07-22 21:50:29,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 239 transitions, 573 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-22 21:50:29,682 INFO L242 Difference]: Finished difference. Result has 229 places, 228 transitions, 488 flow [2022-07-22 21:50:29,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=488, PETRI_PLACES=229, PETRI_TRANSITIONS=228} [2022-07-22 21:50:29,683 INFO L279 CegarLoopForPetriNet]: 239 programPoint places, -10 predicate places. [2022-07-22 21:50:29,684 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 228 transitions, 488 flow [2022-07-22 21:50:29,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:29,684 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:50:29,685 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] [2022-07-22 21:50:29,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:50:29,685 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:50:29,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:50:29,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1267494493, now seen corresponding path program 1 times [2022-07-22 21:50:29,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:50:29,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721023651] [2022-07-22 21:50:29,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:50:29,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:50:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:50:29,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:50:29,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:50:29,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721023651] [2022-07-22 21:50:29,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721023651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:50:29,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:50:29,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:50:29,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150010515] [2022-07-22 21:50:29,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:50:29,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:50:29,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:50:29,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:50:29,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:50:29,783 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 265 [2022-07-22 21:50:29,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 228 transitions, 488 flow. Second operand has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:29,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:50:29,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 265 [2022-07-22 21:50:29,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:50:29,919 INFO L129 PetriNetUnfolder]: 153/696 cut-off events. [2022-07-22 21:50:29,920 INFO L130 PetriNetUnfolder]: For 212/215 co-relation queries the response was YES. [2022-07-22 21:50:29,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1092 conditions, 696 events. 153/696 cut-off events. For 212/215 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2798 event pairs, 27 based on Foata normal form. 12/635 useless extension candidates. Maximal degree in co-relation 1086. Up to 171 conditions per place. [2022-07-22 21:50:29,925 INFO L132 encePairwiseOnDemand]: 262/265 looper letters, 31 selfloop transitions, 2 changer transitions 0/240 dead transitions. [2022-07-22 21:50:29,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 240 transitions, 597 flow [2022-07-22 21:50:29,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:50:29,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:50:29,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 722 transitions. [2022-07-22 21:50:29,928 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9081761006289308 [2022-07-22 21:50:29,928 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 722 transitions. [2022-07-22 21:50:29,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 722 transitions. [2022-07-22 21:50:29,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:50:29,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 722 transitions. [2022-07-22 21:50:29,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:29,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:29,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:29,933 INFO L186 Difference]: Start difference. First operand has 229 places, 228 transitions, 488 flow. Second operand 3 states and 722 transitions. [2022-07-22 21:50:29,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 240 transitions, 597 flow [2022-07-22 21:50:29,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 240 transitions, 594 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:50:29,938 INFO L242 Difference]: Finished difference. Result has 231 places, 229 transitions, 500 flow [2022-07-22 21:50:29,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=500, PETRI_PLACES=231, PETRI_TRANSITIONS=229} [2022-07-22 21:50:29,939 INFO L279 CegarLoopForPetriNet]: 239 programPoint places, -8 predicate places. [2022-07-22 21:50:29,940 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 229 transitions, 500 flow [2022-07-22 21:50:29,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:29,940 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:50:29,941 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] [2022-07-22 21:50:29,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:50:29,941 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:50:29,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:50:29,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1858718658, now seen corresponding path program 1 times [2022-07-22 21:50:29,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:50:29,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001557122] [2022-07-22 21:50:29,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:50:29,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:50:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:50:30,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:50:30,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:50:30,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001557122] [2022-07-22 21:50:30,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001557122] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:50:30,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:50:30,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:50:30,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592728689] [2022-07-22 21:50:30,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:50:30,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:50:30,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:50:30,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:50:30,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:50:30,079 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 265 [2022-07-22 21:50:30,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 229 transitions, 500 flow. Second operand has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:30,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:50:30,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 265 [2022-07-22 21:50:30,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:50:30,335 INFO L129 PetriNetUnfolder]: 109/773 cut-off events. [2022-07-22 21:50:30,335 INFO L130 PetriNetUnfolder]: For 229/230 co-relation queries the response was YES. [2022-07-22 21:50:30,337 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1231 conditions, 773 events. 109/773 cut-off events. For 229/230 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2921 event pairs, 36 based on Foata normal form. 8/712 useless extension candidates. Maximal degree in co-relation 1224. Up to 167 conditions per place. [2022-07-22 21:50:30,341 INFO L132 encePairwiseOnDemand]: 255/265 looper letters, 84 selfloop transitions, 11 changer transitions 0/270 dead transitions. [2022-07-22 21:50:30,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 270 transitions, 793 flow [2022-07-22 21:50:30,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:50:30,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:50:30,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1881 transitions. [2022-07-22 21:50:30,345 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7886792452830189 [2022-07-22 21:50:30,345 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1881 transitions. [2022-07-22 21:50:30,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1881 transitions. [2022-07-22 21:50:30,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:50:30,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1881 transitions. [2022-07-22 21:50:30,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 209.0) internal successors, (1881), 9 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:30,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:30,358 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:30,358 INFO L186 Difference]: Start difference. First operand has 231 places, 229 transitions, 500 flow. Second operand 9 states and 1881 transitions. [2022-07-22 21:50:30,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 270 transitions, 793 flow [2022-07-22 21:50:30,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 270 transitions, 790 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:50:30,366 INFO L242 Difference]: Finished difference. Result has 240 places, 233 transitions, 540 flow [2022-07-22 21:50:30,366 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=540, PETRI_PLACES=240, PETRI_TRANSITIONS=233} [2022-07-22 21:50:30,368 INFO L279 CegarLoopForPetriNet]: 239 programPoint places, 1 predicate places. [2022-07-22 21:50:30,369 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 233 transitions, 540 flow [2022-07-22 21:50:30,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:30,370 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:50:30,370 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] [2022-07-22 21:50:30,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:50:30,370 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:50:30,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:50:30,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1582061120, now seen corresponding path program 1 times [2022-07-22 21:50:30,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:50:30,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986053469] [2022-07-22 21:50:30,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:50:30,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:50:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:50:30,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:50:30,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:50:30,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986053469] [2022-07-22 21:50:30,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986053469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:50:30,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:50:30,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:50:30,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088572300] [2022-07-22 21:50:30,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:50:30,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:50:30,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:50:30,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:50:30,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:50:30,495 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 265 [2022-07-22 21:50:30,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 233 transitions, 540 flow. Second operand has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:30,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:50:30,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 265 [2022-07-22 21:50:30,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:50:30,760 INFO L129 PetriNetUnfolder]: 127/1067 cut-off events. [2022-07-22 21:50:30,761 INFO L130 PetriNetUnfolder]: For 321/323 co-relation queries the response was YES. [2022-07-22 21:50:30,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 1067 events. 127/1067 cut-off events. For 321/323 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4996 event pairs, 42 based on Foata normal form. 15/997 useless extension candidates. Maximal degree in co-relation 1650. Up to 219 conditions per place. [2022-07-22 21:50:30,767 INFO L132 encePairwiseOnDemand]: 255/265 looper letters, 75 selfloop transitions, 12 changer transitions 0/262 dead transitions. [2022-07-22 21:50:30,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 262 transitions, 794 flow [2022-07-22 21:50:30,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:50:30,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:50:30,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1869 transitions. [2022-07-22 21:50:30,772 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7836477987421384 [2022-07-22 21:50:30,772 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1869 transitions. [2022-07-22 21:50:30,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1869 transitions. [2022-07-22 21:50:30,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:50:30,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1869 transitions. [2022-07-22 21:50:30,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 207.66666666666666) internal successors, (1869), 9 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:30,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:30,784 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:30,784 INFO L186 Difference]: Start difference. First operand has 240 places, 233 transitions, 540 flow. Second operand 9 states and 1869 transitions. [2022-07-22 21:50:30,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 262 transitions, 794 flow [2022-07-22 21:50:30,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 262 transitions, 785 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-22 21:50:30,792 INFO L242 Difference]: Finished difference. Result has 247 places, 237 transitions, 575 flow [2022-07-22 21:50:30,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=575, PETRI_PLACES=247, PETRI_TRANSITIONS=237} [2022-07-22 21:50:30,794 INFO L279 CegarLoopForPetriNet]: 239 programPoint places, 8 predicate places. [2022-07-22 21:50:30,794 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 237 transitions, 575 flow [2022-07-22 21:50:30,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:30,795 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:50:30,795 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] [2022-07-22 21:50:30,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:50:30,796 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:50:30,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:50:30,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1769428669, now seen corresponding path program 1 times [2022-07-22 21:50:30,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:50:30,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989393687] [2022-07-22 21:50:30,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:50:30,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:50:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:50:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:50:31,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:50:31,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989393687] [2022-07-22 21:50:31,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989393687] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:50:31,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:50:31,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:50:31,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915569137] [2022-07-22 21:50:31,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:50:31,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:50:31,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:50:31,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:50:31,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:50:31,050 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 265 [2022-07-22 21:50:31,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 237 transitions, 575 flow. Second operand has 8 states, 8 states have (on average 193.25) internal successors, (1546), 8 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:31,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:50:31,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 265 [2022-07-22 21:50:31,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:50:32,726 INFO L129 PetriNetUnfolder]: 3272/9314 cut-off events. [2022-07-22 21:50:32,727 INFO L130 PetriNetUnfolder]: For 2799/2802 co-relation queries the response was YES. [2022-07-22 21:50:32,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16569 conditions, 9314 events. 3272/9314 cut-off events. For 2799/2802 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 87781 event pairs, 1597 based on Foata normal form. 0/7843 useless extension candidates. Maximal degree in co-relation 16558. Up to 1850 conditions per place. [2022-07-22 21:50:32,797 INFO L132 encePairwiseOnDemand]: 254/265 looper letters, 117 selfloop transitions, 11 changer transitions 0/291 dead transitions. [2022-07-22 21:50:32,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 291 transitions, 998 flow [2022-07-22 21:50:32,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:50:32,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:50:32,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1795 transitions. [2022-07-22 21:50:32,802 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7526205450733753 [2022-07-22 21:50:32,802 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1795 transitions. [2022-07-22 21:50:32,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1795 transitions. [2022-07-22 21:50:32,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:50:32,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1795 transitions. [2022-07-22 21:50:32,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 199.44444444444446) internal successors, (1795), 9 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:32,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:32,811 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:32,812 INFO L186 Difference]: Start difference. First operand has 247 places, 237 transitions, 575 flow. Second operand 9 states and 1795 transitions. [2022-07-22 21:50:32,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 291 transitions, 998 flow [2022-07-22 21:50:32,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 291 transitions, 987 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-22 21:50:32,818 INFO L242 Difference]: Finished difference. Result has 255 places, 240 transitions, 606 flow [2022-07-22 21:50:32,819 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=606, PETRI_PLACES=255, PETRI_TRANSITIONS=240} [2022-07-22 21:50:32,819 INFO L279 CegarLoopForPetriNet]: 239 programPoint places, 16 predicate places. [2022-07-22 21:50:32,820 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 240 transitions, 606 flow [2022-07-22 21:50:32,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.25) internal successors, (1546), 8 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:32,821 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:50:32,821 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] [2022-07-22 21:50:32,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:50:32,821 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:50:32,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:50:32,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1581181163, now seen corresponding path program 1 times [2022-07-22 21:50:32,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:50:32,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279339233] [2022-07-22 21:50:32,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:50:32,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:50:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:50:33,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:50:33,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:50:33,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279339233] [2022-07-22 21:50:33,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279339233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:50:33,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:50:33,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:50:33,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933460100] [2022-07-22 21:50:33,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:50:33,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:50:33,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:50:33,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:50:33,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:50:33,073 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 265 [2022-07-22 21:50:33,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 240 transitions, 606 flow. Second operand has 8 states, 8 states have (on average 193.25) internal successors, (1546), 8 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:33,075 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:50:33,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 265 [2022-07-22 21:50:33,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:50:34,312 INFO L129 PetriNetUnfolder]: 2420/7206 cut-off events. [2022-07-22 21:50:34,313 INFO L130 PetriNetUnfolder]: For 2888/2926 co-relation queries the response was YES. [2022-07-22 21:50:34,343 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13425 conditions, 7206 events. 2420/7206 cut-off events. For 2888/2926 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 63122 event pairs, 1207 based on Foata normal form. 0/6226 useless extension candidates. Maximal degree in co-relation 13411. Up to 1609 conditions per place. [2022-07-22 21:50:34,371 INFO L132 encePairwiseOnDemand]: 254/265 looper letters, 87 selfloop transitions, 9 changer transitions 21/280 dead transitions. [2022-07-22 21:50:34,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 280 transitions, 960 flow [2022-07-22 21:50:34,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:50:34,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:50:34,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1788 transitions. [2022-07-22 21:50:34,376 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7496855345911949 [2022-07-22 21:50:34,376 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1788 transitions. [2022-07-22 21:50:34,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1788 transitions. [2022-07-22 21:50:34,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:50:34,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1788 transitions. [2022-07-22 21:50:34,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 198.66666666666666) internal successors, (1788), 9 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:34,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:34,386 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:34,386 INFO L186 Difference]: Start difference. First operand has 255 places, 240 transitions, 606 flow. Second operand 9 states and 1788 transitions. [2022-07-22 21:50:34,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 280 transitions, 960 flow [2022-07-22 21:50:34,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 280 transitions, 944 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-22 21:50:34,394 INFO L242 Difference]: Finished difference. Result has 260 places, 238 transitions, 602 flow [2022-07-22 21:50:34,395 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=602, PETRI_PLACES=260, PETRI_TRANSITIONS=238} [2022-07-22 21:50:34,396 INFO L279 CegarLoopForPetriNet]: 239 programPoint places, 21 predicate places. [2022-07-22 21:50:34,396 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 238 transitions, 602 flow [2022-07-22 21:50:34,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.25) internal successors, (1546), 8 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:34,397 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:50:34,397 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] [2022-07-22 21:50:34,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:50:34,398 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:50:34,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:50:34,398 INFO L85 PathProgramCache]: Analyzing trace with hash 250686035, now seen corresponding path program 1 times [2022-07-22 21:50:34,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:50:34,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214964318] [2022-07-22 21:50:34,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:50:34,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:50:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:50:34,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 21:50:34,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:50:34,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214964318] [2022-07-22 21:50:34,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214964318] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:50:34,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:50:34,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 21:50:34,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32557802] [2022-07-22 21:50:34,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:50:34,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:50:34,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:50:34,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:50:34,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-22 21:50:34,694 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 265 [2022-07-22 21:50:34,696 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 238 transitions, 602 flow. Second operand has 9 states, 9 states have (on average 192.88888888888889) internal successors, (1736), 9 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:34,696 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:50:34,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 265 [2022-07-22 21:50:34,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:50:35,442 INFO L129 PetriNetUnfolder]: 1714/4472 cut-off events. [2022-07-22 21:50:35,443 INFO L130 PetriNetUnfolder]: For 2209/2225 co-relation queries the response was YES. [2022-07-22 21:50:35,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9168 conditions, 4472 events. 1714/4472 cut-off events. For 2209/2225 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 31849 event pairs, 517 based on Foata normal form. 114/4190 useless extension candidates. Maximal degree in co-relation 9152. Up to 1609 conditions per place. [2022-07-22 21:50:35,478 INFO L132 encePairwiseOnDemand]: 257/265 looper letters, 90 selfloop transitions, 8 changer transitions 3/264 dead transitions. [2022-07-22 21:50:35,479 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 264 transitions, 896 flow [2022-07-22 21:50:35,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:50:35,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:50:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1582 transitions. [2022-07-22 21:50:35,483 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7462264150943396 [2022-07-22 21:50:35,483 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1582 transitions. [2022-07-22 21:50:35,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1582 transitions. [2022-07-22 21:50:35,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:50:35,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1582 transitions. [2022-07-22 21:50:35,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 197.75) internal successors, (1582), 8 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:35,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:35,491 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:35,491 INFO L186 Difference]: Start difference. First operand has 260 places, 238 transitions, 602 flow. Second operand 8 states and 1582 transitions. [2022-07-22 21:50:35,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 264 transitions, 896 flow [2022-07-22 21:50:35,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 264 transitions, 866 flow, removed 7 selfloop flow, removed 10 redundant places. [2022-07-22 21:50:35,500 INFO L242 Difference]: Finished difference. Result has 255 places, 236 transitions, 591 flow [2022-07-22 21:50:35,501 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=591, PETRI_PLACES=255, PETRI_TRANSITIONS=236} [2022-07-22 21:50:35,501 INFO L279 CegarLoopForPetriNet]: 239 programPoint places, 16 predicate places. [2022-07-22 21:50:35,502 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 236 transitions, 591 flow [2022-07-22 21:50:35,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 192.88888888888889) internal successors, (1736), 9 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:35,502 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:50:35,503 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] [2022-07-22 21:50:35,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:50:35,503 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:50:35,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:50:35,504 INFO L85 PathProgramCache]: Analyzing trace with hash -576032563, now seen corresponding path program 1 times [2022-07-22 21:50:35,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:50:35,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836941341] [2022-07-22 21:50:35,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:50:35,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:50:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:50:35,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:50:35,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:50:35,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836941341] [2022-07-22 21:50:35,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836941341] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:50:35,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362303422] [2022-07-22 21:50:35,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:50:35,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:50:35,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:50:35,663 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) [2022-07-22 21:50:35,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 21:50:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:50:35,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 21:50:35,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:50:36,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:50:36,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:50:37,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:50:37,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362303422] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:50:37,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:50:37,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 11] total 26 [2022-07-22 21:50:37,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759729541] [2022-07-22 21:50:37,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:50:37,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:50:37,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:50:37,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:50:37,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2022-07-22 21:50:37,232 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 265 [2022-07-22 21:50:37,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 236 transitions, 591 flow. Second operand has 10 states, 10 states have (on average 189.6) internal successors, (1896), 10 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:37,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:50:37,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 265 [2022-07-22 21:50:37,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:50:38,677 INFO L129 PetriNetUnfolder]: 3519/6493 cut-off events. [2022-07-22 21:50:38,677 INFO L130 PetriNetUnfolder]: For 3510/3514 co-relation queries the response was YES. [2022-07-22 21:50:38,701 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14636 conditions, 6493 events. 3519/6493 cut-off events. For 3510/3514 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 43837 event pairs, 208 based on Foata normal form. 0/5930 useless extension candidates. Maximal degree in co-relation 14622. Up to 1280 conditions per place. [2022-07-22 21:50:38,733 INFO L132 encePairwiseOnDemand]: 248/265 looper letters, 154 selfloop transitions, 30 changer transitions 0/344 dead transitions. [2022-07-22 21:50:38,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 344 transitions, 1322 flow [2022-07-22 21:50:38,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 21:50:38,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-22 21:50:38,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3293 transitions. [2022-07-22 21:50:38,741 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7309655937846837 [2022-07-22 21:50:38,742 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3293 transitions. [2022-07-22 21:50:38,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3293 transitions. [2022-07-22 21:50:38,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:50:38,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3293 transitions. [2022-07-22 21:50:38,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 193.7058823529412) internal successors, (3293), 17 states have internal predecessors, (3293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:38,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 265.0) internal successors, (4770), 18 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:38,759 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 265.0) internal successors, (4770), 18 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:38,760 INFO L186 Difference]: Start difference. First operand has 255 places, 236 transitions, 591 flow. Second operand 17 states and 3293 transitions. [2022-07-22 21:50:38,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 344 transitions, 1322 flow [2022-07-22 21:50:38,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 344 transitions, 1281 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-07-22 21:50:38,769 INFO L242 Difference]: Finished difference. Result has 269 places, 252 transitions, 730 flow [2022-07-22 21:50:38,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=730, PETRI_PLACES=269, PETRI_TRANSITIONS=252} [2022-07-22 21:50:38,770 INFO L279 CegarLoopForPetriNet]: 239 programPoint places, 30 predicate places. [2022-07-22 21:50:38,771 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 252 transitions, 730 flow [2022-07-22 21:50:38,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 189.6) internal successors, (1896), 10 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:38,771 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:50:38,772 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] [2022-07-22 21:50:38,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 21:50:38,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 21:50:38,988 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:50:38,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:50:38,988 INFO L85 PathProgramCache]: Analyzing trace with hash 100813299, now seen corresponding path program 2 times [2022-07-22 21:50:38,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:50:38,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657607115] [2022-07-22 21:50:38,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:50:38,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:50:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:50:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:50:39,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:50:39,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657607115] [2022-07-22 21:50:39,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657607115] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:50:39,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828333603] [2022-07-22 21:50:39,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 21:50:39,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:50:39,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:50:39,249 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) [2022-07-22 21:50:39,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 21:50:39,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 21:50:39,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:50:39,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 21:50:39,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:50:39,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 21:50:39,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:50:40,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 21:50:40,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828333603] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:50:40,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:50:40,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 20 [2022-07-22 21:50:40,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599272690] [2022-07-22 21:50:40,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:50:40,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:50:40,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:50:40,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:50:40,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-07-22 21:50:40,141 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 265 [2022-07-22 21:50:40,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 252 transitions, 730 flow. Second operand has 8 states, 8 states have (on average 193.625) internal successors, (1549), 8 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:40,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:50:40,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 265 [2022-07-22 21:50:40,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:50:40,912 INFO L129 PetriNetUnfolder]: 2172/4315 cut-off events. [2022-07-22 21:50:40,912 INFO L130 PetriNetUnfolder]: For 3657/3674 co-relation queries the response was YES. [2022-07-22 21:50:40,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11160 conditions, 4315 events. 2172/4315 cut-off events. For 3657/3674 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 27557 event pairs, 175 based on Foata normal form. 96/4170 useless extension candidates. Maximal degree in co-relation 11139. Up to 996 conditions per place. [2022-07-22 21:50:40,948 INFO L132 encePairwiseOnDemand]: 251/265 looper letters, 102 selfloop transitions, 18 changer transitions 3/290 dead transitions. [2022-07-22 21:50:40,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 290 transitions, 1120 flow [2022-07-22 21:50:40,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:50:40,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:50:40,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2155 transitions. [2022-07-22 21:50:40,954 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7392795883361921 [2022-07-22 21:50:40,954 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2155 transitions. [2022-07-22 21:50:40,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2155 transitions. [2022-07-22 21:50:40,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:50:40,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2155 transitions. [2022-07-22 21:50:40,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 195.9090909090909) internal successors, (2155), 11 states have internal predecessors, (2155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:40,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 265.0) internal successors, (3180), 12 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:40,963 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 265.0) internal successors, (3180), 12 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:40,963 INFO L186 Difference]: Start difference. First operand has 269 places, 252 transitions, 730 flow. Second operand 11 states and 2155 transitions. [2022-07-22 21:50:40,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 290 transitions, 1120 flow [2022-07-22 21:50:40,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 290 transitions, 1092 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-07-22 21:50:40,980 INFO L242 Difference]: Finished difference. Result has 273 places, 249 transitions, 732 flow [2022-07-22 21:50:40,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=732, PETRI_PLACES=273, PETRI_TRANSITIONS=249} [2022-07-22 21:50:40,982 INFO L279 CegarLoopForPetriNet]: 239 programPoint places, 34 predicate places. [2022-07-22 21:50:40,982 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 249 transitions, 732 flow [2022-07-22 21:50:40,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.625) internal successors, (1549), 8 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:40,983 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:50:40,983 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] [2022-07-22 21:50:41,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 21:50:41,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 21:50:41,200 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:50:41,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:50:41,200 INFO L85 PathProgramCache]: Analyzing trace with hash -925476199, now seen corresponding path program 1 times [2022-07-22 21:50:41,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:50:41,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824231162] [2022-07-22 21:50:41,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:50:41,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:50:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:50:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:50:41,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:50:41,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824231162] [2022-07-22 21:50:41,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824231162] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:50:41,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:50:41,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 21:50:41,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634047990] [2022-07-22 21:50:41,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:50:41,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:50:41,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:50:41,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:50:41,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-22 21:50:41,415 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 265 [2022-07-22 21:50:41,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 249 transitions, 732 flow. Second operand has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:41,416 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:50:41,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 265 [2022-07-22 21:50:41,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:50:42,427 INFO L129 PetriNetUnfolder]: 2406/4714 cut-off events. [2022-07-22 21:50:42,428 INFO L130 PetriNetUnfolder]: For 7057/7142 co-relation queries the response was YES. [2022-07-22 21:50:42,459 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13595 conditions, 4714 events. 2406/4714 cut-off events. For 7057/7142 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 30892 event pairs, 427 based on Foata normal form. 20/4386 useless extension candidates. Maximal degree in co-relation 13572. Up to 1823 conditions per place. [2022-07-22 21:50:42,490 INFO L132 encePairwiseOnDemand]: 256/265 looper letters, 114 selfloop transitions, 13 changer transitions 0/295 dead transitions. [2022-07-22 21:50:42,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 295 transitions, 1213 flow [2022-07-22 21:50:42,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:50:42,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:50:42,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1751 transitions. [2022-07-22 21:50:42,495 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7341719077568134 [2022-07-22 21:50:42,496 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1751 transitions. [2022-07-22 21:50:42,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1751 transitions. [2022-07-22 21:50:42,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:50:42,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1751 transitions. [2022-07-22 21:50:42,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 194.55555555555554) internal successors, (1751), 9 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:42,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:42,504 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:42,504 INFO L186 Difference]: Start difference. First operand has 273 places, 249 transitions, 732 flow. Second operand 9 states and 1751 transitions. [2022-07-22 21:50:42,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 295 transitions, 1213 flow [2022-07-22 21:50:42,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 295 transitions, 1135 flow, removed 7 selfloop flow, removed 14 redundant places. [2022-07-22 21:50:42,524 INFO L242 Difference]: Finished difference. Result has 268 places, 254 transitions, 750 flow [2022-07-22 21:50:42,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=750, PETRI_PLACES=268, PETRI_TRANSITIONS=254} [2022-07-22 21:50:42,525 INFO L279 CegarLoopForPetriNet]: 239 programPoint places, 29 predicate places. [2022-07-22 21:50:42,525 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 254 transitions, 750 flow [2022-07-22 21:50:42,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:42,525 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:50:42,526 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] [2022-07-22 21:50:42,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 21:50:42,526 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:50:42,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:50:42,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1464733927, now seen corresponding path program 2 times [2022-07-22 21:50:42,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:50:42,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576992920] [2022-07-22 21:50:42,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:50:42,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:50:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:50:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:50:42,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:50:42,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576992920] [2022-07-22 21:50:42,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576992920] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:50:42,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816758713] [2022-07-22 21:50:42,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 21:50:42,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:50:42,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:50:42,648 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) [2022-07-22 21:50:42,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 21:50:42,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 21:50:42,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:50:42,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 21:50:42,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:50:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:50:43,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:50:43,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816758713] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:50:43,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 21:50:43,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-07-22 21:50:43,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534864181] [2022-07-22 21:50:43,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:50:43,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:50:43,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:50:43,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:50:43,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:50:43,048 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 265 [2022-07-22 21:50:43,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 254 transitions, 750 flow. Second operand has 5 states, 5 states have (on average 232.4) internal successors, (1162), 5 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:43,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:50:43,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 265 [2022-07-22 21:50:43,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:50:43,530 INFO L129 PetriNetUnfolder]: 1041/2777 cut-off events. [2022-07-22 21:50:43,531 INFO L130 PetriNetUnfolder]: For 3060/3170 co-relation queries the response was YES. [2022-07-22 21:50:43,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7002 conditions, 2777 events. 1041/2777 cut-off events. For 3060/3170 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 19369 event pairs, 96 based on Foata normal form. 37/2672 useless extension candidates. Maximal degree in co-relation 6978. Up to 591 conditions per place. [2022-07-22 21:50:43,560 INFO L132 encePairwiseOnDemand]: 259/265 looper letters, 52 selfloop transitions, 19 changer transitions 0/293 dead transitions. [2022-07-22 21:50:43,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 293 transitions, 1072 flow [2022-07-22 21:50:43,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:50:43,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:50:43,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1425 transitions. [2022-07-22 21:50:43,564 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8962264150943396 [2022-07-22 21:50:43,564 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1425 transitions. [2022-07-22 21:50:43,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1425 transitions. [2022-07-22 21:50:43,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:50:43,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1425 transitions. [2022-07-22 21:50:43,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 237.5) internal successors, (1425), 6 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:43,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:43,570 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:43,570 INFO L186 Difference]: Start difference. First operand has 268 places, 254 transitions, 750 flow. Second operand 6 states and 1425 transitions. [2022-07-22 21:50:43,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 293 transitions, 1072 flow [2022-07-22 21:50:43,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 293 transitions, 1056 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-07-22 21:50:43,579 INFO L242 Difference]: Finished difference. Result has 272 places, 264 transitions, 886 flow [2022-07-22 21:50:43,579 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=886, PETRI_PLACES=272, PETRI_TRANSITIONS=264} [2022-07-22 21:50:43,580 INFO L279 CegarLoopForPetriNet]: 239 programPoint places, 33 predicate places. [2022-07-22 21:50:43,580 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 264 transitions, 886 flow [2022-07-22 21:50:43,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 232.4) internal successors, (1162), 5 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:43,580 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:50:43,581 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] [2022-07-22 21:50:43,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 21:50:43,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:50:43,804 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 2 more)] === [2022-07-22 21:50:43,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:50:43,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1346765343, now seen corresponding path program 1 times [2022-07-22 21:50:43,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:50:43,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089333691] [2022-07-22 21:50:43,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:50:43,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:50:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:50:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:50:43,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:50:43,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089333691] [2022-07-22 21:50:43,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089333691] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:50:43,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185094521] [2022-07-22 21:50:43,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:50:43,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:50:43,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:50:43,937 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) [2022-07-22 21:50:43,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 21:50:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:50:44,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 21:50:44,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:50:44,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:50:44,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:50:44,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185094521] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:50:44,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 21:50:44,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 8 [2022-07-22 21:50:44,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231486735] [2022-07-22 21:50:44,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:50:44,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:50:44,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:50:44,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:50:44,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:50:44,371 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 265 [2022-07-22 21:50:44,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 264 transitions, 886 flow. Second operand has 6 states, 6 states have (on average 225.16666666666666) internal successors, (1351), 6 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:44,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:50:44,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 265 [2022-07-22 21:50:44,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:50:46,680 INFO L129 PetriNetUnfolder]: 8147/17745 cut-off events. [2022-07-22 21:50:46,681 INFO L130 PetriNetUnfolder]: For 40782/41902 co-relation queries the response was YES. [2022-07-22 21:50:46,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52370 conditions, 17745 events. 8147/17745 cut-off events. For 40782/41902 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 178289 event pairs, 1164 based on Foata normal form. 166/16520 useless extension candidates. Maximal degree in co-relation 52342. Up to 3286 conditions per place. [2022-07-22 21:50:46,877 INFO L132 encePairwiseOnDemand]: 256/265 looper letters, 141 selfloop transitions, 45 changer transitions 0/400 dead transitions. [2022-07-22 21:50:46,877 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 400 transitions, 2265 flow [2022-07-22 21:50:46,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:50:46,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:50:46,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1867 transitions. [2022-07-22 21:50:46,881 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8806603773584906 [2022-07-22 21:50:46,881 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1867 transitions. [2022-07-22 21:50:46,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1867 transitions. [2022-07-22 21:50:46,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:50:46,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1867 transitions. [2022-07-22 21:50:46,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 233.375) internal successors, (1867), 8 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:46,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:46,888 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:46,888 INFO L186 Difference]: Start difference. First operand has 272 places, 264 transitions, 886 flow. Second operand 8 states and 1867 transitions. [2022-07-22 21:50:46,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 400 transitions, 2265 flow [2022-07-22 21:50:46,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 400 transitions, 2209 flow, removed 22 selfloop flow, removed 2 redundant places. [2022-07-22 21:50:46,973 INFO L242 Difference]: Finished difference. Result has 283 places, 306 transitions, 1433 flow [2022-07-22 21:50:46,974 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1433, PETRI_PLACES=283, PETRI_TRANSITIONS=306} [2022-07-22 21:50:46,974 INFO L279 CegarLoopForPetriNet]: 239 programPoint places, 44 predicate places. [2022-07-22 21:50:46,974 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 306 transitions, 1433 flow [2022-07-22 21:50:46,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 225.16666666666666) internal successors, (1351), 6 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:46,975 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:50:46,975 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] [2022-07-22 21:50:46,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 21:50:47,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:50:47,192 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 2 more)] === [2022-07-22 21:50:47,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:50:47,192 INFO L85 PathProgramCache]: Analyzing trace with hash 304308613, now seen corresponding path program 2 times [2022-07-22 21:50:47,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:50:47,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297381713] [2022-07-22 21:50:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:50:47,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:50:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:50:47,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 21:50:47,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:50:47,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297381713] [2022-07-22 21:50:47,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297381713] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:50:47,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:50:47,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 21:50:47,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279574376] [2022-07-22 21:50:47,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:50:47,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:50:47,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:50:47,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:50:47,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-22 21:50:47,411 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 265 [2022-07-22 21:50:47,412 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 306 transitions, 1433 flow. Second operand has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:47,412 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:50:47,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 265 [2022-07-22 21:50:47,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:50:51,331 INFO L129 PetriNetUnfolder]: 12351/23458 cut-off events. [2022-07-22 21:50:51,332 INFO L130 PetriNetUnfolder]: For 107519/108035 co-relation queries the response was YES. [2022-07-22 21:50:51,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92121 conditions, 23458 events. 12351/23458 cut-off events. For 107519/108035 co-relation queries the response was YES. Maximal size of possible extension queue 1246. Compared 212478 event pairs, 4348 based on Foata normal form. 541/23329 useless extension candidates. Maximal degree in co-relation 92088. Up to 12517 conditions per place. [2022-07-22 21:50:51,641 INFO L132 encePairwiseOnDemand]: 256/265 looper letters, 228 selfloop transitions, 11 changer transitions 0/407 dead transitions. [2022-07-22 21:50:51,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 407 transitions, 2939 flow [2022-07-22 21:50:51,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:50:51,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:50:51,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1751 transitions. [2022-07-22 21:50:51,645 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7341719077568134 [2022-07-22 21:50:51,645 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1751 transitions. [2022-07-22 21:50:51,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1751 transitions. [2022-07-22 21:50:51,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:50:51,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1751 transitions. [2022-07-22 21:50:51,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 194.55555555555554) internal successors, (1751), 9 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:51,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:51,653 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:51,653 INFO L186 Difference]: Start difference. First operand has 283 places, 306 transitions, 1433 flow. Second operand 9 states and 1751 transitions. [2022-07-22 21:50:51,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 407 transitions, 2939 flow [2022-07-22 21:50:51,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 407 transitions, 2936 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-22 21:50:51,917 INFO L242 Difference]: Finished difference. Result has 292 places, 310 transitions, 1497 flow [2022-07-22 21:50:51,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=1430, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1497, PETRI_PLACES=292, PETRI_TRANSITIONS=310} [2022-07-22 21:50:51,919 INFO L279 CegarLoopForPetriNet]: 239 programPoint places, 53 predicate places. [2022-07-22 21:50:51,919 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 310 transitions, 1497 flow [2022-07-22 21:50:51,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:50:51,920 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:50:51,920 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] [2022-07-22 21:50:51,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 21:50:51,921 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 2 more)] === [2022-07-22 21:50:51,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:50:51,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1931958788, now seen corresponding path program 1 times [2022-07-22 21:50:51,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:50:51,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593597961] [2022-07-22 21:50:51,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:50:51,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:50:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:50:57,988 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:50:57,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:50:57,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593597961] [2022-07-22 21:50:57,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593597961] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:50:57,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181789972] [2022-07-22 21:50:57,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:50:57,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:50:57,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:50:57,993 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:50:57,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 21:50:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:50:58,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 114 conjunts are in the unsatisfiable core [2022-07-22 21:50:58,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:50:58,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 21:50:58,358 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-22 21:50:58,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-22 21:50:59,301 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-22 21:50:59,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-22 21:51:05,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 21:51:05,421 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 21:51:05,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 27 [2022-07-22 21:51:05,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 21:51:05,800 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 21:51:05,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 27 [2022-07-22 21:51:07,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 21:51:07,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 21:51:07,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 21:51:07,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 21:51:07,042 INFO L356 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2022-07-22 21:51:07,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 45 treesize of output 35 [2022-07-22 21:51:07,087 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 21:51:07,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:51:08,494 INFO L356 Elim1Store]: treesize reduction 31, result has 88.8 percent of original size [2022-07-22 21:51:08,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 912 treesize of output 1013 [2022-07-22 21:51:08,581 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 21:51:08,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 764 treesize of output 668 [2022-07-22 21:51:08,657 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 21:51:08,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 572 treesize of output 572