./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-array-int-trans.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 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:56:57,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:56:57,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:56:57,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:56:57,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:56:57,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:56:57,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:56:57,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:56:57,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:56:57,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:56:57,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:56:57,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:56:57,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:56:57,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:56:57,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:56:57,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:56:57,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:56:57,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:56:57,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:56:57,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:56:57,262 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:56:57,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:56:57,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:56:57,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:56:57,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:56:57,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:56:57,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:56:57,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:56:57,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:56:57,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:56:57,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:56:57,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:56:57,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:56:57,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:56:57,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:56:57,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:56:57,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:56:57,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:56:57,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:56:57,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:56:57,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:56:57,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:56:57,293 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:56:57,314 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:56:57,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:56:57,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:56:57,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:56:57,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:56:57,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:56:57,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:56:57,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:56:57,317 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:56:57,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:56:57,318 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:56:57,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:56:57,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:56:57,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:56:57,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:56:57,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:56:57,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:56:57,319 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:56:57,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:56:57,319 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:56:57,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:56:57,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:56:57,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:56:57,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:56:57,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:56:57,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:56:57,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:56:57,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:56:57,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:56:57,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:56:57,321 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:56:57,321 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:56:57,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:56:57,321 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 [2022-07-21 08:56:57,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:56:57,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:56:57,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:56:57,566 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:56:57,567 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:56:57,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2022-07-21 08:56:57,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ccf53d61/6b74e04d62de45e4b7ffeda690ac99ad/FLAG933cb9c68 [2022-07-21 08:56:57,988 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:56:57,988 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2022-07-21 08:56:57,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ccf53d61/6b74e04d62de45e4b7ffeda690ac99ad/FLAG933cb9c68 [2022-07-21 08:56:58,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ccf53d61/6b74e04d62de45e4b7ffeda690ac99ad [2022-07-21 08:56:58,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:56:58,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:56:58,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:56:58,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:56:58,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:56:58,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:56:58" (1/1) ... [2022-07-21 08:56:58,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd6ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:56:58, skipping insertion in model container [2022-07-21 08:56:58,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:56:58" (1/1) ... [2022-07-21 08:56:58,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:56:58,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:56:58,164 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2728,2741] [2022-07-21 08:56:58,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:56:58,215 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:56:58,230 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2728,2741] [2022-07-21 08:56:58,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:56:58,265 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:56:58,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:56:58 WrapperNode [2022-07-21 08:56:58,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:56:58,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:56:58,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:56:58,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:56:58,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:56:58" (1/1) ... [2022-07-21 08:56:58,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:56:58" (1/1) ... [2022-07-21 08:56:58,305 INFO L137 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 277 [2022-07-21 08:56:58,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:56:58,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:56:58,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:56:58,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:56:58,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:56:58" (1/1) ... [2022-07-21 08:56:58,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:56:58" (1/1) ... [2022-07-21 08:56:58,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:56:58" (1/1) ... [2022-07-21 08:56:58,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:56:58" (1/1) ... [2022-07-21 08:56:58,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:56:58" (1/1) ... [2022-07-21 08:56:58,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:56:58" (1/1) ... [2022-07-21 08:56:58,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:56:58" (1/1) ... [2022-07-21 08:56:58,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:56:58,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:56:58,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:56:58,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:56:58,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:56:58" (1/1) ... [2022-07-21 08:56:58,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:56:58,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:56:58,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:56:58,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:56:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:56:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:56:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:56:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:56:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 08:56:58,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 08:56:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 08:56:58,424 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 08:56:58,424 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-21 08:56:58,424 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-21 08:56:58,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:56:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 08:56:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:56:58,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:56:58,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:56:58,427 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:56:58,492 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:56:58,493 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:56:58,971 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:56:58,980 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:56:58,982 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-21 08:56:58,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:56:58 BoogieIcfgContainer [2022-07-21 08:56:58,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:56:58,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:56:58,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:56:58,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:56:58,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:56:58" (1/3) ... [2022-07-21 08:56:58,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f1ace2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:56:58, skipping insertion in model container [2022-07-21 08:56:58,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:56:58" (2/3) ... [2022-07-21 08:56:58,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f1ace2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:56:58, skipping insertion in model container [2022-07-21 08:56:58,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:56:58" (3/3) ... [2022-07-21 08:56:58,991 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2022-07-21 08:56:58,994 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:56:59,001 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:56:59,001 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:56:59,001 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:56:59,108 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-21 08:56:59,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 332 places, 350 transitions, 724 flow [2022-07-21 08:56:59,271 INFO L129 PetriNetUnfolder]: 28/347 cut-off events. [2022-07-21 08:56:59,271 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 08:56:59,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 347 events. 28/347 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 584 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 269. Up to 3 conditions per place. [2022-07-21 08:56:59,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 350 transitions, 724 flow [2022-07-21 08:56:59,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 336 transitions, 690 flow [2022-07-21 08:56:59,299 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:56:59,306 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@4fdf8b68, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@10927e53 [2022-07-21 08:56:59,307 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 08:56:59,364 INFO L129 PetriNetUnfolder]: 27/331 cut-off events. [2022-07-21 08:56:59,364 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 08:56:59,364 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:56:59,365 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] [2022-07-21 08:56:59,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:56:59,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:56:59,370 INFO L85 PathProgramCache]: Analyzing trace with hash -36079225, now seen corresponding path program 1 times [2022-07-21 08:56:59,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:56:59,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261159914] [2022-07-21 08:56:59,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:56:59,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:56:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:56:59,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:56:59,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:56:59,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261159914] [2022-07-21 08:56:59,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261159914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:56:59,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:56:59,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:56:59,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234990799] [2022-07-21 08:56:59,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:56:59,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 08:56:59,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:56:59,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 08:56:59,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 08:56:59,631 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 350 [2022-07-21 08:56:59,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 336 transitions, 690 flow. Second operand has 2 states, 2 states have (on average 328.0) internal successors, (656), 2 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:56:59,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:56:59,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 350 [2022-07-21 08:56:59,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:56:59,700 INFO L129 PetriNetUnfolder]: 9/317 cut-off events. [2022-07-21 08:56:59,700 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-07-21 08:56:59,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 317 events. 9/317 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 561 event pairs, 0 based on Foata normal form. 25/320 useless extension candidates. Maximal degree in co-relation 256. Up to 7 conditions per place. [2022-07-21 08:56:59,704 INFO L132 encePairwiseOnDemand]: 331/350 looper letters, 6 selfloop transitions, 0 changer transitions 7/317 dead transitions. [2022-07-21 08:56:59,704 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 317 transitions, 664 flow [2022-07-21 08:56:59,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 08:56:59,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-21 08:56:59,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 673 transitions. [2022-07-21 08:56:59,719 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9614285714285714 [2022-07-21 08:56:59,720 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 673 transitions. [2022-07-21 08:56:59,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 673 transitions. [2022-07-21 08:56:59,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:56:59,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 673 transitions. [2022-07-21 08:56:59,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 336.5) internal successors, (673), 2 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:56:59,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:56:59,738 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:56:59,739 INFO L186 Difference]: Start difference. First operand has 318 places, 336 transitions, 690 flow. Second operand 2 states and 673 transitions. [2022-07-21 08:56:59,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 317 transitions, 664 flow [2022-07-21 08:56:59,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 317 transitions, 652 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-21 08:56:59,755 INFO L242 Difference]: Finished difference. Result has 313 places, 310 transitions, 626 flow [2022-07-21 08:56:59,757 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=626, PETRI_PLACES=313, PETRI_TRANSITIONS=310} [2022-07-21 08:56:59,762 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, -5 predicate places. [2022-07-21 08:56:59,762 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 310 transitions, 626 flow [2022-07-21 08:56:59,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 328.0) internal successors, (656), 2 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:56:59,763 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:56:59,763 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] [2022-07-21 08:56:59,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:56:59,764 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:56:59,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:56:59,765 INFO L85 PathProgramCache]: Analyzing trace with hash -330795675, now seen corresponding path program 1 times [2022-07-21 08:56:59,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:56:59,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679896557] [2022-07-21 08:56:59,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:56:59,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:56:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:00,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:57:00,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:00,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679896557] [2022-07-21 08:57:00,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679896557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:00,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:00,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-21 08:57:00,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933078920] [2022-07-21 08:57:00,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:00,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-21 08:57:00,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:00,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-21 08:57:00,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-07-21 08:57:00,294 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 350 [2022-07-21 08:57:00,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 310 transitions, 626 flow. Second operand has 20 states, 20 states have (on average 243.3) internal successors, (4866), 20 states have internal predecessors, (4866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:00,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:00,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 350 [2022-07-21 08:57:00,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:01,644 INFO L129 PetriNetUnfolder]: 687/5537 cut-off events. [2022-07-21 08:57:01,644 INFO L130 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2022-07-21 08:57:01,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6571 conditions, 5537 events. 687/5537 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 56816 event pairs, 287 based on Foata normal form. 1/4936 useless extension candidates. Maximal degree in co-relation 6568. Up to 391 conditions per place. [2022-07-21 08:57:01,699 INFO L132 encePairwiseOnDemand]: 324/350 looper letters, 127 selfloop transitions, 26 changer transitions 4/384 dead transitions. [2022-07-21 08:57:01,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 384 transitions, 1101 flow [2022-07-21 08:57:01,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 08:57:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 08:57:01,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5918 transitions. [2022-07-21 08:57:01,710 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7045238095238096 [2022-07-21 08:57:01,710 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5918 transitions. [2022-07-21 08:57:01,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5918 transitions. [2022-07-21 08:57:01,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:01,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5918 transitions. [2022-07-21 08:57:01,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 246.58333333333334) internal successors, (5918), 24 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:01,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 350.0) internal successors, (8750), 25 states have internal predecessors, (8750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:01,736 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 350.0) internal successors, (8750), 25 states have internal predecessors, (8750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:01,736 INFO L186 Difference]: Start difference. First operand has 313 places, 310 transitions, 626 flow. Second operand 24 states and 5918 transitions. [2022-07-21 08:57:01,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 384 transitions, 1101 flow [2022-07-21 08:57:01,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 384 transitions, 1101 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:57:01,742 INFO L242 Difference]: Finished difference. Result has 336 places, 320 transitions, 734 flow [2022-07-21 08:57:01,742 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=734, PETRI_PLACES=336, PETRI_TRANSITIONS=320} [2022-07-21 08:57:01,743 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 18 predicate places. [2022-07-21 08:57:01,743 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 320 transitions, 734 flow [2022-07-21 08:57:01,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 243.3) internal successors, (4866), 20 states have internal predecessors, (4866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:01,745 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:01,745 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] [2022-07-21 08:57:01,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:57:01,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:57:01,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:01,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1144664097, now seen corresponding path program 2 times [2022-07-21 08:57:01,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:01,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195895963] [2022-07-21 08:57:01,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:01,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:57:01,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:01,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195895963] [2022-07-21 08:57:01,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195895963] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:01,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:01,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 08:57:01,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503340351] [2022-07-21 08:57:01,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:01,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 08:57:01,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:01,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 08:57:01,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:57:01,955 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 350 [2022-07-21 08:57:01,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 320 transitions, 734 flow. Second operand has 14 states, 14 states have (on average 248.5) internal successors, (3479), 14 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:01,959 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:01,959 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 350 [2022-07-21 08:57:01,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:03,587 INFO L129 PetriNetUnfolder]: 1283/11290 cut-off events. [2022-07-21 08:57:03,587 INFO L130 PetriNetUnfolder]: For 729/751 co-relation queries the response was YES. [2022-07-21 08:57:03,636 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13869 conditions, 11290 events. 1283/11290 cut-off events. For 729/751 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 137834 event pairs, 693 based on Foata normal form. 3/10078 useless extension candidates. Maximal degree in co-relation 13858. Up to 657 conditions per place. [2022-07-21 08:57:03,662 INFO L132 encePairwiseOnDemand]: 328/350 looper letters, 151 selfloop transitions, 23 changer transitions 6/414 dead transitions. [2022-07-21 08:57:03,662 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 414 transitions, 1375 flow [2022-07-21 08:57:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:57:03,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:57:03,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5043 transitions. [2022-07-21 08:57:03,670 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7204285714285714 [2022-07-21 08:57:03,670 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5043 transitions. [2022-07-21 08:57:03,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5043 transitions. [2022-07-21 08:57:03,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:03,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5043 transitions. [2022-07-21 08:57:03,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 252.15) internal successors, (5043), 20 states have internal predecessors, (5043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:03,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 350.0) internal successors, (7350), 21 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:03,691 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 350.0) internal successors, (7350), 21 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:03,692 INFO L186 Difference]: Start difference. First operand has 336 places, 320 transitions, 734 flow. Second operand 20 states and 5043 transitions. [2022-07-21 08:57:03,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 414 transitions, 1375 flow [2022-07-21 08:57:03,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 414 transitions, 1337 flow, removed 5 selfloop flow, removed 13 redundant places. [2022-07-21 08:57:03,701 INFO L242 Difference]: Finished difference. Result has 351 places, 334 transitions, 850 flow [2022-07-21 08:57:03,702 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=850, PETRI_PLACES=351, PETRI_TRANSITIONS=334} [2022-07-21 08:57:03,703 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 33 predicate places. [2022-07-21 08:57:03,703 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 334 transitions, 850 flow [2022-07-21 08:57:03,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 248.5) internal successors, (3479), 14 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:03,704 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:03,704 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] [2022-07-21 08:57:03,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:57:03,705 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:57:03,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:03,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1845871625, now seen corresponding path program 1 times [2022-07-21 08:57:03,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:03,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558660963] [2022-07-21 08:57:03,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:03,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 08:57:03,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:03,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558660963] [2022-07-21 08:57:03,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558660963] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:03,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:03,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 08:57:03,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561233527] [2022-07-21 08:57:03,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:03,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 08:57:03,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:03,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 08:57:03,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:57:03,896 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 350 [2022-07-21 08:57:03,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 334 transitions, 850 flow. Second operand has 14 states, 14 states have (on average 248.78571428571428) internal successors, (3483), 14 states have internal predecessors, (3483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:03,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:03,899 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 350 [2022-07-21 08:57:03,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:05,459 INFO L129 PetriNetUnfolder]: 1283/10402 cut-off events. [2022-07-21 08:57:05,460 INFO L130 PetriNetUnfolder]: For 1140/1264 co-relation queries the response was YES. [2022-07-21 08:57:05,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13282 conditions, 10402 events. 1283/10402 cut-off events. For 1140/1264 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 124615 event pairs, 456 based on Foata normal form. 2/9238 useless extension candidates. Maximal degree in co-relation 13262. Up to 783 conditions per place. [2022-07-21 08:57:05,537 INFO L132 encePairwiseOnDemand]: 330/350 looper letters, 130 selfloop transitions, 26 changer transitions 5/394 dead transitions. [2022-07-21 08:57:05,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 394 transitions, 1339 flow [2022-07-21 08:57:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 08:57:05,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-21 08:57:05,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4780 transitions. [2022-07-21 08:57:05,549 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.718796992481203 [2022-07-21 08:57:05,549 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4780 transitions. [2022-07-21 08:57:05,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4780 transitions. [2022-07-21 08:57:05,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:05,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4780 transitions. [2022-07-21 08:57:05,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 251.57894736842104) internal successors, (4780), 19 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:05,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:05,581 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:05,581 INFO L186 Difference]: Start difference. First operand has 351 places, 334 transitions, 850 flow. Second operand 19 states and 4780 transitions. [2022-07-21 08:57:05,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 394 transitions, 1339 flow [2022-07-21 08:57:05,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 394 transitions, 1320 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-07-21 08:57:05,590 INFO L242 Difference]: Finished difference. Result has 368 places, 337 transitions, 919 flow [2022-07-21 08:57:05,591 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=919, PETRI_PLACES=368, PETRI_TRANSITIONS=337} [2022-07-21 08:57:05,591 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 50 predicate places. [2022-07-21 08:57:05,591 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 337 transitions, 919 flow [2022-07-21 08:57:05,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 248.78571428571428) internal successors, (3483), 14 states have internal predecessors, (3483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:05,592 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:05,593 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] [2022-07-21 08:57:05,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:57:05,593 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:57:05,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:05,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1906080933, now seen corresponding path program 1 times [2022-07-21 08:57:05,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:05,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571198453] [2022-07-21 08:57:05,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:05,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:57:05,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:05,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571198453] [2022-07-21 08:57:05,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571198453] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:57:05,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844172664] [2022-07-21 08:57:05,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:05,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:57:05,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:57:05,736 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:57:05,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:57:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:05,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 08:57:05,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:57:06,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:57:06,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:57:06,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:57:06,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844172664] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 08:57:06,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 08:57:06,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-07-21 08:57:06,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490808960] [2022-07-21 08:57:06,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:06,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:57:06,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:06,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:57:06,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-07-21 08:57:06,649 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 350 [2022-07-21 08:57:06,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 337 transitions, 919 flow. Second operand has 11 states, 11 states have (on average 272.45454545454544) internal successors, (2997), 11 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:06,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:06,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 350 [2022-07-21 08:57:06,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:09,452 INFO L129 PetriNetUnfolder]: 2616/21161 cut-off events. [2022-07-21 08:57:09,452 INFO L130 PetriNetUnfolder]: For 1937/1939 co-relation queries the response was YES. [2022-07-21 08:57:09,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26682 conditions, 21161 events. 2616/21161 cut-off events. For 1937/1939 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 292098 event pairs, 1445 based on Foata normal form. 0/18965 useless extension candidates. Maximal degree in co-relation 26658. Up to 900 conditions per place. [2022-07-21 08:57:09,591 INFO L132 encePairwiseOnDemand]: 332/350 looper letters, 163 selfloop transitions, 28 changer transitions 3/450 dead transitions. [2022-07-21 08:57:09,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 450 transitions, 1642 flow [2022-07-21 08:57:09,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 08:57:09,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-21 08:57:09,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5273 transitions. [2022-07-21 08:57:09,600 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7929323308270677 [2022-07-21 08:57:09,601 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5273 transitions. [2022-07-21 08:57:09,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5273 transitions. [2022-07-21 08:57:09,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:09,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5273 transitions. [2022-07-21 08:57:09,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 277.5263157894737) internal successors, (5273), 19 states have internal predecessors, (5273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:09,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:09,618 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:09,618 INFO L186 Difference]: Start difference. First operand has 368 places, 337 transitions, 919 flow. Second operand 19 states and 5273 transitions. [2022-07-21 08:57:09,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 450 transitions, 1642 flow [2022-07-21 08:57:09,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 450 transitions, 1576 flow, removed 6 selfloop flow, removed 14 redundant places. [2022-07-21 08:57:09,630 INFO L242 Difference]: Finished difference. Result has 376 places, 350 transitions, 1003 flow [2022-07-21 08:57:09,631 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1003, PETRI_PLACES=376, PETRI_TRANSITIONS=350} [2022-07-21 08:57:09,631 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 58 predicate places. [2022-07-21 08:57:09,631 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 350 transitions, 1003 flow [2022-07-21 08:57:09,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 272.45454545454544) internal successors, (2997), 11 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:09,632 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:09,632 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] [2022-07-21 08:57:09,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 08:57:09,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:57:09,850 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:57:09,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:09,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1964388484, now seen corresponding path program 1 times [2022-07-21 08:57:09,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:09,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118644760] [2022-07-21 08:57:09,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:09,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:10,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 08:57:10,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:10,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118644760] [2022-07-21 08:57:10,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118644760] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:57:10,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885777104] [2022-07-21 08:57:10,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:10,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:57:10,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:57:10,079 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:57:10,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 08:57:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:10,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-21 08:57:10,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:57:10,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:57:10,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:57:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:57:10,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885777104] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 08:57:10,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 08:57:10,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [16, 13] total 32 [2022-07-21 08:57:10,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120882632] [2022-07-21 08:57:10,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:10,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 08:57:10,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:10,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 08:57:10,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2022-07-21 08:57:10,872 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 350 [2022-07-21 08:57:10,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 350 transitions, 1003 flow. Second operand has 13 states, 13 states have (on average 249.53846153846155) internal successors, (3244), 13 states have internal predecessors, (3244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:10,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:10,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 350 [2022-07-21 08:57:10,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:13,482 INFO L129 PetriNetUnfolder]: 2115/18383 cut-off events. [2022-07-21 08:57:13,483 INFO L130 PetriNetUnfolder]: For 2343/2347 co-relation queries the response was YES. [2022-07-21 08:57:13,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23422 conditions, 18383 events. 2115/18383 cut-off events. For 2343/2347 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 239479 event pairs, 1162 based on Foata normal form. 8/16494 useless extension candidates. Maximal degree in co-relation 23396. Up to 948 conditions per place. [2022-07-21 08:57:13,597 INFO L132 encePairwiseOnDemand]: 328/350 looper letters, 167 selfloop transitions, 36 changer transitions 4/444 dead transitions. [2022-07-21 08:57:13,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 444 transitions, 1735 flow [2022-07-21 08:57:13,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:57:13,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-21 08:57:13,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4320 transitions. [2022-07-21 08:57:13,604 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7260504201680672 [2022-07-21 08:57:13,604 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4320 transitions. [2022-07-21 08:57:13,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4320 transitions. [2022-07-21 08:57:13,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:13,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4320 transitions. [2022-07-21 08:57:13,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 254.11764705882354) internal successors, (4320), 17 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:13,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 350.0) internal successors, (6300), 18 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:13,618 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 350.0) internal successors, (6300), 18 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:13,618 INFO L186 Difference]: Start difference. First operand has 376 places, 350 transitions, 1003 flow. Second operand 17 states and 4320 transitions. [2022-07-21 08:57:13,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 444 transitions, 1735 flow [2022-07-21 08:57:13,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 444 transitions, 1713 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-07-21 08:57:13,627 INFO L242 Difference]: Finished difference. Result has 392 places, 365 transitions, 1163 flow [2022-07-21 08:57:13,627 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1163, PETRI_PLACES=392, PETRI_TRANSITIONS=365} [2022-07-21 08:57:13,628 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 74 predicate places. [2022-07-21 08:57:13,628 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 365 transitions, 1163 flow [2022-07-21 08:57:13,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 249.53846153846155) internal successors, (3244), 13 states have internal predecessors, (3244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:13,629 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:13,629 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] [2022-07-21 08:57:13,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 08:57:13,845 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,SelfDestructingSolverStorable5 [2022-07-21 08:57:13,846 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:57:13,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:13,847 INFO L85 PathProgramCache]: Analyzing trace with hash 2020113811, now seen corresponding path program 1 times [2022-07-21 08:57:13,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:13,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034816250] [2022-07-21 08:57:13,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:13,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:57:13,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:13,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034816250] [2022-07-21 08:57:13,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034816250] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:57:13,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403587045] [2022-07-21 08:57:13,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:13,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:57:13,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:57:13,989 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:57:13,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 08:57:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:14,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 08:57:14,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:57:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:57:14,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:57:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:57:14,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403587045] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 08:57:14,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 08:57:14,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 29 [2022-07-21 08:57:14,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254192602] [2022-07-21 08:57:14,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:14,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:57:14,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:14,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:57:14,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2022-07-21 08:57:14,761 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 350 [2022-07-21 08:57:14,763 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 365 transitions, 1163 flow. Second operand has 11 states, 11 states have (on average 272.90909090909093) internal successors, (3002), 11 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:14,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:14,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 350 [2022-07-21 08:57:14,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:17,981 INFO L129 PetriNetUnfolder]: 4241/22791 cut-off events. [2022-07-21 08:57:17,981 INFO L130 PetriNetUnfolder]: For 4767/4825 co-relation queries the response was YES. [2022-07-21 08:57:18,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32948 conditions, 22791 events. 4241/22791 cut-off events. For 4767/4825 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 293119 event pairs, 1428 based on Foata normal form. 46/20288 useless extension candidates. Maximal degree in co-relation 32915. Up to 1606 conditions per place. [2022-07-21 08:57:18,135 INFO L132 encePairwiseOnDemand]: 332/350 looper letters, 163 selfloop transitions, 31 changer transitions 1/456 dead transitions. [2022-07-21 08:57:18,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 456 transitions, 1836 flow [2022-07-21 08:57:18,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 08:57:18,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-21 08:57:18,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4987 transitions. [2022-07-21 08:57:18,140 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7915873015873016 [2022-07-21 08:57:18,140 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4987 transitions. [2022-07-21 08:57:18,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4987 transitions. [2022-07-21 08:57:18,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:18,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4987 transitions. [2022-07-21 08:57:18,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 277.05555555555554) internal successors, (4987), 18 states have internal predecessors, (4987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:18,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 350.0) internal successors, (6650), 19 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:18,151 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 350.0) internal successors, (6650), 19 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:18,152 INFO L186 Difference]: Start difference. First operand has 392 places, 365 transitions, 1163 flow. Second operand 18 states and 4987 transitions. [2022-07-21 08:57:18,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 456 transitions, 1836 flow [2022-07-21 08:57:18,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 456 transitions, 1799 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-07-21 08:57:18,172 INFO L242 Difference]: Finished difference. Result has 399 places, 371 transitions, 1213 flow [2022-07-21 08:57:18,173 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1213, PETRI_PLACES=399, PETRI_TRANSITIONS=371} [2022-07-21 08:57:18,173 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 81 predicate places. [2022-07-21 08:57:18,173 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 371 transitions, 1213 flow [2022-07-21 08:57:18,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 272.90909090909093) internal successors, (3002), 11 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:18,174 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:18,174 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] [2022-07-21 08:57:18,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 08:57:18,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:57:18,382 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:57:18,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:18,382 INFO L85 PathProgramCache]: Analyzing trace with hash 15889408, now seen corresponding path program 1 times [2022-07-21 08:57:18,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:18,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736983482] [2022-07-21 08:57:18,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:18,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:18,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 08:57:18,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:18,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736983482] [2022-07-21 08:57:18,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736983482] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:57:18,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619322818] [2022-07-21 08:57:18,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:18,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:57:18,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:57:18,491 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:57:18,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 08:57:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:18,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 08:57:18,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:57:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 08:57:18,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:57:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 08:57:19,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619322818] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 08:57:19,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 08:57:19,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11, 11] total 23 [2022-07-21 08:57:19,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011167328] [2022-07-21 08:57:19,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:19,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:57:19,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:19,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:57:19,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2022-07-21 08:57:19,235 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 350 [2022-07-21 08:57:19,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 371 transitions, 1213 flow. Second operand has 11 states, 11 states have (on average 273.0) internal successors, (3003), 11 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:19,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:19,236 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 350 [2022-07-21 08:57:19,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:24,107 INFO L129 PetriNetUnfolder]: 4966/37610 cut-off events. [2022-07-21 08:57:24,108 INFO L130 PetriNetUnfolder]: For 8388/8777 co-relation queries the response was YES. [2022-07-21 08:57:24,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52909 conditions, 37610 events. 4966/37610 cut-off events. For 8388/8777 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 560715 event pairs, 2134 based on Foata normal form. 65/34593 useless extension candidates. Maximal degree in co-relation 52878. Up to 2270 conditions per place. [2022-07-21 08:57:24,568 INFO L132 encePairwiseOnDemand]: 333/350 looper letters, 180 selfloop transitions, 40 changer transitions 2/486 dead transitions. [2022-07-21 08:57:24,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 486 transitions, 2107 flow [2022-07-21 08:57:24,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 08:57:24,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-21 08:57:24,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5246 transitions. [2022-07-21 08:57:24,573 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7888721804511278 [2022-07-21 08:57:24,573 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5246 transitions. [2022-07-21 08:57:24,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5246 transitions. [2022-07-21 08:57:24,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:24,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5246 transitions. [2022-07-21 08:57:24,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 276.10526315789474) internal successors, (5246), 19 states have internal predecessors, (5246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:24,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:24,584 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:24,585 INFO L186 Difference]: Start difference. First operand has 399 places, 371 transitions, 1213 flow. Second operand 19 states and 5246 transitions. [2022-07-21 08:57:24,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 486 transitions, 2107 flow [2022-07-21 08:57:24,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 486 transitions, 2064 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-07-21 08:57:24,611 INFO L242 Difference]: Finished difference. Result has 414 places, 383 transitions, 1347 flow [2022-07-21 08:57:24,611 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1347, PETRI_PLACES=414, PETRI_TRANSITIONS=383} [2022-07-21 08:57:24,612 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 96 predicate places. [2022-07-21 08:57:24,612 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 383 transitions, 1347 flow [2022-07-21 08:57:24,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 273.0) internal successors, (3003), 11 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:24,613 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:24,613 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] [2022-07-21 08:57:24,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 08:57:24,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:57:24,826 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:57:24,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:24,826 INFO L85 PathProgramCache]: Analyzing trace with hash 883261830, now seen corresponding path program 1 times [2022-07-21 08:57:24,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:24,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805819556] [2022-07-21 08:57:24,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:24,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:24,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 08:57:24,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:24,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805819556] [2022-07-21 08:57:24,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805819556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:24,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:57:24,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:57:24,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084851304] [2022-07-21 08:57:24,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:24,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:57:24,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:24,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:57:24,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:57:24,893 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 350 [2022-07-21 08:57:24,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 383 transitions, 1347 flow. Second operand has 7 states, 7 states have (on average 279.42857142857144) internal successors, (1956), 7 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:24,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:24,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 350 [2022-07-21 08:57:24,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:26,404 INFO L129 PetriNetUnfolder]: 743/9168 cut-off events. [2022-07-21 08:57:26,404 INFO L130 PetriNetUnfolder]: For 2522/3267 co-relation queries the response was YES. [2022-07-21 08:57:26,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12941 conditions, 9168 events. 743/9168 cut-off events. For 2522/3267 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 105510 event pairs, 432 based on Foata normal form. 33/8545 useless extension candidates. Maximal degree in co-relation 12906. Up to 1109 conditions per place. [2022-07-21 08:57:26,493 INFO L132 encePairwiseOnDemand]: 339/350 looper letters, 75 selfloop transitions, 8 changer transitions 57/409 dead transitions. [2022-07-21 08:57:26,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 409 transitions, 1710 flow [2022-07-21 08:57:26,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:57:26,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:57:26,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2834 transitions. [2022-07-21 08:57:26,496 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8097142857142857 [2022-07-21 08:57:26,496 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2834 transitions. [2022-07-21 08:57:26,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2834 transitions. [2022-07-21 08:57:26,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:26,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2834 transitions. [2022-07-21 08:57:26,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 283.4) internal successors, (2834), 10 states have internal predecessors, (2834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:26,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 350.0) internal successors, (3850), 11 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:26,502 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 350.0) internal successors, (3850), 11 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:26,502 INFO L186 Difference]: Start difference. First operand has 414 places, 383 transitions, 1347 flow. Second operand 10 states and 2834 transitions. [2022-07-21 08:57:26,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 409 transitions, 1710 flow [2022-07-21 08:57:26,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 409 transitions, 1650 flow, removed 3 selfloop flow, removed 11 redundant places. [2022-07-21 08:57:26,513 INFO L242 Difference]: Finished difference. Result has 411 places, 350 transitions, 1104 flow [2022-07-21 08:57:26,513 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1104, PETRI_PLACES=411, PETRI_TRANSITIONS=350} [2022-07-21 08:57:26,514 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 93 predicate places. [2022-07-21 08:57:26,514 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 350 transitions, 1104 flow [2022-07-21 08:57:26,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 279.42857142857144) internal successors, (1956), 7 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:26,514 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:26,515 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] [2022-07-21 08:57:26,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:57:26,515 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:57:26,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:26,515 INFO L85 PathProgramCache]: Analyzing trace with hash 2016968799, now seen corresponding path program 1 times [2022-07-21 08:57:26,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:26,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764325977] [2022-07-21 08:57:26,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:26,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 08:57:26,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:26,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764325977] [2022-07-21 08:57:26,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764325977] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:57:26,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568457926] [2022-07-21 08:57:26,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:26,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:57:26,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:57:26,679 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) [2022-07-21 08:57:26,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 08:57:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:26,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 08:57:26,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:57:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 08:57:27,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:57:27,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 08:57:27,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568457926] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:57:27,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:57:27,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 31 [2022-07-21 08:57:27,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282019494] [2022-07-21 08:57:27,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:57:27,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-21 08:57:27,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:27,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-21 08:57:27,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2022-07-21 08:57:27,493 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 350 [2022-07-21 08:57:27,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 350 transitions, 1104 flow. Second operand has 31 states, 31 states have (on average 246.3548387096774) internal successors, (7637), 31 states have internal predecessors, (7637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:27,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:27,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 350 [2022-07-21 08:57:27,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:32,732 INFO L129 PetriNetUnfolder]: 2980/30212 cut-off events. [2022-07-21 08:57:32,732 INFO L130 PetriNetUnfolder]: For 7714/7839 co-relation queries the response was YES. [2022-07-21 08:57:32,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41914 conditions, 30212 events. 2980/30212 cut-off events. For 7714/7839 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 438851 event pairs, 1802 based on Foata normal form. 93/28069 useless extension candidates. Maximal degree in co-relation 41878. Up to 1818 conditions per place. [2022-07-21 08:57:32,981 INFO L132 encePairwiseOnDemand]: 317/350 looper letters, 281 selfloop transitions, 69 changer transitions 19/609 dead transitions. [2022-07-21 08:57:32,981 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 609 transitions, 2999 flow [2022-07-21 08:57:32,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-21 08:57:32,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-07-21 08:57:32,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 12846 transitions. [2022-07-21 08:57:32,990 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7058241758241758 [2022-07-21 08:57:32,991 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 12846 transitions. [2022-07-21 08:57:32,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 12846 transitions. [2022-07-21 08:57:32,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:32,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 12846 transitions. [2022-07-21 08:57:33,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 247.03846153846155) internal successors, (12846), 52 states have internal predecessors, (12846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:33,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 350.0) internal successors, (18550), 53 states have internal predecessors, (18550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:33,021 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 350.0) internal successors, (18550), 53 states have internal predecessors, (18550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:33,021 INFO L186 Difference]: Start difference. First operand has 411 places, 350 transitions, 1104 flow. Second operand 52 states and 12846 transitions. [2022-07-21 08:57:33,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 609 transitions, 2999 flow [2022-07-21 08:57:33,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 609 transitions, 2790 flow, removed 15 selfloop flow, removed 30 redundant places. [2022-07-21 08:57:33,041 INFO L242 Difference]: Finished difference. Result has 441 places, 398 transitions, 1500 flow [2022-07-21 08:57:33,042 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=1500, PETRI_PLACES=441, PETRI_TRANSITIONS=398} [2022-07-21 08:57:33,043 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 123 predicate places. [2022-07-21 08:57:33,043 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 398 transitions, 1500 flow [2022-07-21 08:57:33,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 246.3548387096774) internal successors, (7637), 31 states have internal predecessors, (7637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:33,044 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:33,044 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:33,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-21 08:57:33,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 08:57:33,260 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:57:33,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:33,260 INFO L85 PathProgramCache]: Analyzing trace with hash 621379751, now seen corresponding path program 2 times [2022-07-21 08:57:33,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:33,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610812879] [2022-07-21 08:57:33,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:33,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:33,583 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 08:57:33,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:33,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610812879] [2022-07-21 08:57:33,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610812879] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:57:33,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145040467] [2022-07-21 08:57:33,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 08:57:33,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:57:33,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:57:33,584 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:57:33,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 08:57:33,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 08:57:33,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 08:57:33,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 08:57:33,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:57:33,813 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 08:57:33,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:57:33,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145040467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:33,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:57:33,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 20 [2022-07-21 08:57:33,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995072266] [2022-07-21 08:57:33,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:33,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:57:33,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:33,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:57:33,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2022-07-21 08:57:33,818 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 350 [2022-07-21 08:57:33,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 398 transitions, 1500 flow. Second operand has 7 states, 7 states have (on average 272.85714285714283) internal successors, (1910), 7 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:33,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:33,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 350 [2022-07-21 08:57:33,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:57:40,806 INFO L129 PetriNetUnfolder]: 6378/46375 cut-off events. [2022-07-21 08:57:40,806 INFO L130 PetriNetUnfolder]: For 16564/17006 co-relation queries the response was YES. [2022-07-21 08:57:41,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70276 conditions, 46375 events. 6378/46375 cut-off events. For 16564/17006 co-relation queries the response was YES. Maximal size of possible extension queue 935. Compared 703751 event pairs, 1508 based on Foata normal form. 243/42641 useless extension candidates. Maximal degree in co-relation 70229. Up to 3955 conditions per place. [2022-07-21 08:57:41,425 INFO L132 encePairwiseOnDemand]: 341/350 looper letters, 144 selfloop transitions, 32 changer transitions 4/490 dead transitions. [2022-07-21 08:57:41,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 490 transitions, 2352 flow [2022-07-21 08:57:41,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:57:41,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 08:57:41,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1963 transitions. [2022-07-21 08:57:41,427 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8012244897959183 [2022-07-21 08:57:41,427 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1963 transitions. [2022-07-21 08:57:41,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1963 transitions. [2022-07-21 08:57:41,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:57:41,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1963 transitions. [2022-07-21 08:57:41,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.42857142857144) internal successors, (1963), 7 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:41,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 350.0) internal successors, (2800), 8 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:41,430 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 350.0) internal successors, (2800), 8 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:41,430 INFO L186 Difference]: Start difference. First operand has 441 places, 398 transitions, 1500 flow. Second operand 7 states and 1963 transitions. [2022-07-21 08:57:41,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 490 transitions, 2352 flow [2022-07-21 08:57:41,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 490 transitions, 2279 flow, removed 33 selfloop flow, removed 10 redundant places. [2022-07-21 08:57:41,468 INFO L242 Difference]: Finished difference. Result has 436 places, 422 transitions, 1744 flow [2022-07-21 08:57:41,469 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=1457, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1744, PETRI_PLACES=436, PETRI_TRANSITIONS=422} [2022-07-21 08:57:41,469 INFO L279 CegarLoopForPetriNet]: 318 programPoint places, 118 predicate places. [2022-07-21 08:57:41,469 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 422 transitions, 1744 flow [2022-07-21 08:57:41,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.85714285714283) internal successors, (1910), 7 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:41,470 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:57:41,470 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:57:41,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 08:57:41,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:57:41,684 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:57:41,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:57:41,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1872062923, now seen corresponding path program 3 times [2022-07-21 08:57:41,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:57:41,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049797477] [2022-07-21 08:57:41,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:57:41,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:57:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:57:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 08:57:41,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:57:41,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049797477] [2022-07-21 08:57:41,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049797477] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:57:41,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034889188] [2022-07-21 08:57:41,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 08:57:41,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:57:41,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:57:41,860 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:57:41,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 08:57:41,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-21 08:57:41,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 08:57:41,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 08:57:41,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:57:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 08:57:42,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:57:42,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034889188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:57:42,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:57:42,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 20 [2022-07-21 08:57:42,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653299376] [2022-07-21 08:57:42,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:57:42,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:57:42,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:57:42,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:57:42,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2022-07-21 08:57:42,081 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 350 [2022-07-21 08:57:42,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 422 transitions, 1744 flow. Second operand has 7 states, 7 states have (on average 272.85714285714283) internal successors, (1910), 7 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:57:42,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:57:42,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 350 [2022-07-21 08:57:42,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand