./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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-chromosome-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:03:32,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:03:32,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:03:32,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:03:32,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:03:32,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:03:32,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:03:32,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:03:32,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:03:32,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:03:32,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:03:32,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:03:32,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:03:32,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:03:32,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:03:32,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:03:32,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:03:32,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:03:32,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:03:32,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:03:32,277 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:03:32,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:03:32,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:03:32,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:03:32,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:03:32,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:03:32,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:03:32,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:03:32,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:03:32,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:03:32,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:03:32,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:03:32,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:03:32,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:03:32,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:03:32,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:03:32,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:03:32,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:03:32,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:03:32,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:03:32,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:03:32,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:03:32,293 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:03:32,316 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:03:32,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:03:32,317 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:03:32,317 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:03:32,318 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:03:32,318 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:03:32,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:03:32,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:03:32,318 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:03:32,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:03:32,319 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:03:32,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:03:32,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:03:32,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:03:32,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:03:32,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:03:32,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:03:32,320 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:03:32,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:03:32,321 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:03:32,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:03:32,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:03:32,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:03:32,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:03:32,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:03:32,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:03:32,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:03:32,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:03:32,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:03:32,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:03:32,322 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:03:32,323 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:03:32,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:03:32,323 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 [2022-07-13 22:03:32,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:03:32,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:03:32,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:03:32,538 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:03:32,539 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:03:32,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2022-07-13 22:03:32,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c7572c2e/3e534575ca834b78b9be10e78f75a376/FLAG24f7209e9 [2022-07-13 22:03:32,980 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:03:32,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2022-07-13 22:03:32,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c7572c2e/3e534575ca834b78b9be10e78f75a376/FLAG24f7209e9 [2022-07-13 22:03:33,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c7572c2e/3e534575ca834b78b9be10e78f75a376 [2022-07-13 22:03:33,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:03:33,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:03:33,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:03:33,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:03:33,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:03:33,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:03:33" (1/1) ... [2022-07-13 22:03:33,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7787d914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:33, skipping insertion in model container [2022-07-13 22:03:33,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:03:33" (1/1) ... [2022-07-13 22:03:33,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:03:33,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:03:33,553 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-chromosome-subst.wvr.c[3097,3110] [2022-07-13 22:03:33,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:03:33,564 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:03:33,580 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-chromosome-subst.wvr.c[3097,3110] [2022-07-13 22:03:33,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:03:33,591 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:03:33,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:33 WrapperNode [2022-07-13 22:03:33,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:03:33,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:03:33,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:03:33,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:03:33,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:33" (1/1) ... [2022-07-13 22:03:33,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:33" (1/1) ... [2022-07-13 22:03:33,622 INFO L137 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 287 [2022-07-13 22:03:33,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:03:33,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:03:33,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:03:33,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:03:33,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:33" (1/1) ... [2022-07-13 22:03:33,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:33" (1/1) ... [2022-07-13 22:03:33,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:33" (1/1) ... [2022-07-13 22:03:33,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:33" (1/1) ... [2022-07-13 22:03:33,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:33" (1/1) ... [2022-07-13 22:03:33,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:33" (1/1) ... [2022-07-13 22:03:33,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:33" (1/1) ... [2022-07-13 22:03:33,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:03:33,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:03:33,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:03:33,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:03:33,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:33" (1/1) ... [2022-07-13 22:03:33,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:03:33,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:33,673 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) [2022-07-13 22:03:33,682 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 [2022-07-13 22:03:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:03:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:03:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:03:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:03:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:03:33,702 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:03:33,703 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:03:33,703 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:03:33,703 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-13 22:03:33,703 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-13 22:03:33,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:03:33,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:03:33,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:03:33,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:03:33,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:03:33,704 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:03:33,816 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:03:33,818 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:03:34,087 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:03:34,097 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:03:34,097 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-13 22:03:34,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:03:34 BoogieIcfgContainer [2022-07-13 22:03:34,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:03:34,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:03:34,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:03:34,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:03:34,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:03:33" (1/3) ... [2022-07-13 22:03:34,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a81103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:03:34, skipping insertion in model container [2022-07-13 22:03:34,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:03:33" (2/3) ... [2022-07-13 22:03:34,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a81103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:03:34, skipping insertion in model container [2022-07-13 22:03:34,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:03:34" (3/3) ... [2022-07-13 22:03:34,121 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2022-07-13 22:03:34,124 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:03:34,130 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:03:34,130 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:03:34,130 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:03:34,249 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-13 22:03:34,288 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 357 places, 379 transitions, 782 flow [2022-07-13 22:03:34,375 INFO L129 PetriNetUnfolder]: 32/376 cut-off events. [2022-07-13 22:03:34,375 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:03:34,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 376 events. 32/376 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 625 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 282. Up to 2 conditions per place. [2022-07-13 22:03:34,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 357 places, 379 transitions, 782 flow [2022-07-13 22:03:34,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 343 places, 365 transitions, 748 flow [2022-07-13 22:03:34,392 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:03:34,396 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@22c48116, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@e15d26f [2022-07-13 22:03:34,396 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 22:03:34,439 INFO L129 PetriNetUnfolder]: 32/364 cut-off events. [2022-07-13 22:03:34,439 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:03:34,439 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:34,440 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:34,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:03:34,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:34,443 INFO L85 PathProgramCache]: Analyzing trace with hash -952802072, now seen corresponding path program 1 times [2022-07-13 22:03:34,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:34,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442465467] [2022-07-13 22:03:34,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:34,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:34,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:03:34,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:34,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442465467] [2022-07-13 22:03:34,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442465467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:34,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:34,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:03:34,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255986833] [2022-07-13 22:03:34,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:34,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:03:34,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:34,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:03:34,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 22:03:34,703 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 379 [2022-07-13 22:03:34,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 365 transitions, 748 flow. Second operand has 2 states, 2 states have (on average 353.0) internal successors, (706), 2 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:34,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:34,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 379 [2022-07-13 22:03:34,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:34,778 INFO L129 PetriNetUnfolder]: 9/342 cut-off events. [2022-07-13 22:03:34,778 INFO L130 PetriNetUnfolder]: For 12/14 co-relation queries the response was YES. [2022-07-13 22:03:34,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 342 events. 9/342 cut-off events. For 12/14 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 606 event pairs, 0 based on Foata normal form. 36/352 useless extension candidates. Maximal degree in co-relation 267. Up to 7 conditions per place. [2022-07-13 22:03:34,784 INFO L132 encePairwiseOnDemand]: 356/379 looper letters, 6 selfloop transitions, 0 changer transitions 8/342 dead transitions. [2022-07-13 22:03:34,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 342 transitions, 714 flow [2022-07-13 22:03:34,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:03:34,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-13 22:03:34,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 727 transitions. [2022-07-13 22:03:34,797 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9591029023746702 [2022-07-13 22:03:34,798 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 727 transitions. [2022-07-13 22:03:34,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 727 transitions. [2022-07-13 22:03:34,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:34,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 727 transitions. [2022-07-13 22:03:34,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 363.5) internal successors, (727), 2 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:34,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 379.0) internal successors, (1137), 3 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:34,813 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 379.0) internal successors, (1137), 3 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:34,814 INFO L186 Difference]: Start difference. First operand has 343 places, 365 transitions, 748 flow. Second operand 2 states and 727 transitions. [2022-07-13 22:03:34,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 342 transitions, 714 flow [2022-07-13 22:03:34,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 342 transitions, 702 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-13 22:03:34,827 INFO L242 Difference]: Finished difference. Result has 338 places, 334 transitions, 674 flow [2022-07-13 22:03:34,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=674, PETRI_PLACES=338, PETRI_TRANSITIONS=334} [2022-07-13 22:03:34,831 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, -5 predicate places. [2022-07-13 22:03:34,832 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 334 transitions, 674 flow [2022-07-13 22:03:34,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 353.0) internal successors, (706), 2 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:34,833 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:34,833 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] [2022-07-13 22:03:34,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:03:34,833 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)] === [2022-07-13 22:03:34,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:34,835 INFO L85 PathProgramCache]: Analyzing trace with hash -936950910, now seen corresponding path program 1 times [2022-07-13 22:03:34,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:34,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434070317] [2022-07-13 22:03:34,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:34,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:35,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:03:35,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:35,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434070317] [2022-07-13 22:03:35,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434070317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:35,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:35,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:03:35,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648821306] [2022-07-13 22:03:35,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:35,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:03:35,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:35,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:03:35,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:03:35,043 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 379 [2022-07-13 22:03:35,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 334 transitions, 674 flow. Second operand has 4 states, 4 states have (on average 340.5) internal successors, (1362), 4 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:35,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:35,045 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 379 [2022-07-13 22:03:35,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:35,220 INFO L129 PetriNetUnfolder]: 54/867 cut-off events. [2022-07-13 22:03:35,220 INFO L130 PetriNetUnfolder]: For 25/31 co-relation queries the response was YES. [2022-07-13 22:03:35,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 994 conditions, 867 events. 54/867 cut-off events. For 25/31 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4221 event pairs, 18 based on Foata normal form. 2/810 useless extension candidates. Maximal degree in co-relation 991. Up to 55 conditions per place. [2022-07-13 22:03:35,231 INFO L132 encePairwiseOnDemand]: 374/379 looper letters, 31 selfloop transitions, 4 changer transitions 0/352 dead transitions. [2022-07-13 22:03:35,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 352 transitions, 790 flow [2022-07-13 22:03:35,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:03:35,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:03:35,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1726 transitions. [2022-07-13 22:03:35,235 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9108179419525066 [2022-07-13 22:03:35,235 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1726 transitions. [2022-07-13 22:03:35,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1726 transitions. [2022-07-13 22:03:35,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:35,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1726 transitions. [2022-07-13 22:03:35,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 345.2) internal successors, (1726), 5 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:35,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 379.0) internal successors, (2274), 6 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:35,243 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 379.0) internal successors, (2274), 6 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:35,243 INFO L186 Difference]: Start difference. First operand has 338 places, 334 transitions, 674 flow. Second operand 5 states and 1726 transitions. [2022-07-13 22:03:35,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 352 transitions, 790 flow [2022-07-13 22:03:35,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 352 transitions, 790 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:03:35,252 INFO L242 Difference]: Finished difference. Result has 337 places, 337 transitions, 703 flow [2022-07-13 22:03:35,252 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=703, PETRI_PLACES=337, PETRI_TRANSITIONS=337} [2022-07-13 22:03:35,253 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, -6 predicate places. [2022-07-13 22:03:35,253 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 337 transitions, 703 flow [2022-07-13 22:03:35,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 340.5) internal successors, (1362), 4 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:35,254 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:35,255 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] [2022-07-13 22:03:35,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:03:35,255 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)] === [2022-07-13 22:03:35,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:35,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1135624034, now seen corresponding path program 1 times [2022-07-13 22:03:35,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:35,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741495878] [2022-07-13 22:03:35,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:35,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:35,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:03:35,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:35,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741495878] [2022-07-13 22:03:35,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741495878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:35,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:35,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:03:35,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699332509] [2022-07-13 22:03:35,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:35,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:03:35,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:35,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:03:35,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:03:35,404 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 379 [2022-07-13 22:03:35,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 337 transitions, 703 flow. Second operand has 4 states, 4 states have (on average 340.5) internal successors, (1362), 4 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:35,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:35,406 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 379 [2022-07-13 22:03:35,406 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:35,593 INFO L129 PetriNetUnfolder]: 83/1014 cut-off events. [2022-07-13 22:03:35,594 INFO L130 PetriNetUnfolder]: For 87/161 co-relation queries the response was YES. [2022-07-13 22:03:35,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1218 conditions, 1014 events. 83/1014 cut-off events. For 87/161 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6053 event pairs, 36 based on Foata normal form. 0/931 useless extension candidates. Maximal degree in co-relation 1212. Up to 97 conditions per place. [2022-07-13 22:03:35,604 INFO L132 encePairwiseOnDemand]: 374/379 looper letters, 29 selfloop transitions, 4 changer transitions 0/353 dead transitions. [2022-07-13 22:03:35,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 353 transitions, 809 flow [2022-07-13 22:03:35,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:03:35,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:03:35,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1724 transitions. [2022-07-13 22:03:35,608 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9097625329815303 [2022-07-13 22:03:35,608 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1724 transitions. [2022-07-13 22:03:35,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1724 transitions. [2022-07-13 22:03:35,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:35,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1724 transitions. [2022-07-13 22:03:35,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 344.8) internal successors, (1724), 5 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:35,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 379.0) internal successors, (2274), 6 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:35,616 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 379.0) internal successors, (2274), 6 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:35,617 INFO L186 Difference]: Start difference. First operand has 337 places, 337 transitions, 703 flow. Second operand 5 states and 1724 transitions. [2022-07-13 22:03:35,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 353 transitions, 809 flow [2022-07-13 22:03:35,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 353 transitions, 809 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:03:35,622 INFO L242 Difference]: Finished difference. Result has 344 places, 340 transitions, 732 flow [2022-07-13 22:03:35,623 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=732, PETRI_PLACES=344, PETRI_TRANSITIONS=340} [2022-07-13 22:03:35,624 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 1 predicate places. [2022-07-13 22:03:35,624 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 340 transitions, 732 flow [2022-07-13 22:03:35,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 340.5) internal successors, (1362), 4 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:35,625 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:35,626 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] [2022-07-13 22:03:35,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:03:35,626 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)] === [2022-07-13 22:03:35,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:35,627 INFO L85 PathProgramCache]: Analyzing trace with hash -368116362, now seen corresponding path program 1 times [2022-07-13 22:03:35,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:35,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531056336] [2022-07-13 22:03:35,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:35,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:03:35,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:35,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531056336] [2022-07-13 22:03:35,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531056336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:35,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:35,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:03:35,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295016295] [2022-07-13 22:03:35,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:35,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:03:35,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:35,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:03:35,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:03:35,697 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 379 [2022-07-13 22:03:35,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 340 transitions, 732 flow. Second operand has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:35,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:35,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 379 [2022-07-13 22:03:35,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:35,825 INFO L129 PetriNetUnfolder]: 7/568 cut-off events. [2022-07-13 22:03:35,825 INFO L130 PetriNetUnfolder]: For 17/27 co-relation queries the response was YES. [2022-07-13 22:03:35,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 568 events. 7/568 cut-off events. For 17/27 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1589 event pairs, 0 based on Foata normal form. 0/546 useless extension candidates. Maximal degree in co-relation 659. Up to 48 conditions per place. [2022-07-13 22:03:35,830 INFO L132 encePairwiseOnDemand]: 364/379 looper letters, 42 selfloop transitions, 12 changer transitions 0/352 dead transitions. [2022-07-13 22:03:35,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 352 transitions, 864 flow [2022-07-13 22:03:35,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:03:35,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:03:35,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1622 transitions. [2022-07-13 22:03:35,833 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8559366754617415 [2022-07-13 22:03:35,833 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1622 transitions. [2022-07-13 22:03:35,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1622 transitions. [2022-07-13 22:03:35,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:35,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1622 transitions. [2022-07-13 22:03:35,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 324.4) internal successors, (1622), 5 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:35,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 379.0) internal successors, (2274), 6 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:35,840 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 379.0) internal successors, (2274), 6 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:35,840 INFO L186 Difference]: Start difference. First operand has 344 places, 340 transitions, 732 flow. Second operand 5 states and 1622 transitions. [2022-07-13 22:03:35,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 352 transitions, 864 flow [2022-07-13 22:03:35,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 352 transitions, 864 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:03:35,845 INFO L242 Difference]: Finished difference. Result has 349 places, 343 transitions, 780 flow [2022-07-13 22:03:35,846 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=780, PETRI_PLACES=349, PETRI_TRANSITIONS=343} [2022-07-13 22:03:35,847 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 6 predicate places. [2022-07-13 22:03:35,847 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 343 transitions, 780 flow [2022-07-13 22:03:35,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:35,848 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:35,848 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:35,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:03:35,849 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)] === [2022-07-13 22:03:35,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:35,849 INFO L85 PathProgramCache]: Analyzing trace with hash 690744834, now seen corresponding path program 1 times [2022-07-13 22:03:35,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:35,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393912190] [2022-07-13 22:03:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:35,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:03:35,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:35,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393912190] [2022-07-13 22:03:35,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393912190] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:35,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883606462] [2022-07-13 22:03:35,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:35,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:35,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:35,933 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) [2022-07-13 22:03:35,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:03:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:36,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:03:36,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:03:36,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:03:36,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:03:36,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883606462] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:03:36,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:03:36,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-07-13 22:03:36,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541364567] [2022-07-13 22:03:36,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:03:36,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 22:03:36,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:36,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 22:03:36,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:03:36,301 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 379 [2022-07-13 22:03:36,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 343 transitions, 780 flow. Second operand has 15 states, 15 states have (on average 314.3333333333333) internal successors, (4715), 15 states have internal predecessors, (4715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:36,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:36,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 379 [2022-07-13 22:03:36,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:36,572 INFO L129 PetriNetUnfolder]: 7/595 cut-off events. [2022-07-13 22:03:36,573 INFO L130 PetriNetUnfolder]: For 29/39 co-relation queries the response was YES. [2022-07-13 22:03:36,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 595 events. 7/595 cut-off events. For 29/39 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1562 event pairs, 0 based on Foata normal form. 6/582 useless extension candidates. Maximal degree in co-relation 734. Up to 39 conditions per place. [2022-07-13 22:03:36,577 INFO L132 encePairwiseOnDemand]: 355/379 looper letters, 45 selfloop transitions, 33 changer transitions 0/373 dead transitions. [2022-07-13 22:03:36,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 373 transitions, 1002 flow [2022-07-13 22:03:36,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:03:36,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 22:03:36,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3494 transitions. [2022-07-13 22:03:36,583 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8380906692252339 [2022-07-13 22:03:36,583 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3494 transitions. [2022-07-13 22:03:36,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3494 transitions. [2022-07-13 22:03:36,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:36,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3494 transitions. [2022-07-13 22:03:36,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 317.6363636363636) internal successors, (3494), 11 states have internal predecessors, (3494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:36,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 379.0) internal successors, (4548), 12 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:36,595 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 379.0) internal successors, (4548), 12 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:36,595 INFO L186 Difference]: Start difference. First operand has 349 places, 343 transitions, 780 flow. Second operand 11 states and 3494 transitions. [2022-07-13 22:03:36,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 373 transitions, 1002 flow [2022-07-13 22:03:36,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 373 transitions, 984 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-13 22:03:36,601 INFO L242 Difference]: Finished difference. Result has 359 places, 361 transitions, 929 flow [2022-07-13 22:03:36,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=929, PETRI_PLACES=359, PETRI_TRANSITIONS=361} [2022-07-13 22:03:36,602 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 16 predicate places. [2022-07-13 22:03:36,602 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 361 transitions, 929 flow [2022-07-13 22:03:36,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 314.3333333333333) internal successors, (4715), 15 states have internal predecessors, (4715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:36,603 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:36,604 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:36,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 22:03:36,821 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 [2022-07-13 22:03:36,821 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)] === [2022-07-13 22:03:36,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:36,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1161919554, now seen corresponding path program 2 times [2022-07-13 22:03:36,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:36,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625695062] [2022-07-13 22:03:36,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:36,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:36,944 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-13 22:03:36,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:36,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625695062] [2022-07-13 22:03:36,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625695062] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:36,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161148090] [2022-07-13 22:03:36,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:03:36,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:36,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:36,960 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) [2022-07-13 22:03:37,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:03:37,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 22:03:37,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:03:37,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:03:37,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:37,176 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-13 22:03:37,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:03:37,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161148090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:37,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:03:37,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-07-13 22:03:37,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555254315] [2022-07-13 22:03:37,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:37,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:03:37,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:37,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:03:37,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:03:37,183 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 379 [2022-07-13 22:03:37,184 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 361 transitions, 929 flow. Second operand has 6 states, 6 states have (on average 308.1666666666667) internal successors, (1849), 6 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:37,184 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:37,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 379 [2022-07-13 22:03:37,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:37,539 INFO L129 PetriNetUnfolder]: 42/1639 cut-off events. [2022-07-13 22:03:37,540 INFO L130 PetriNetUnfolder]: For 62/118 co-relation queries the response was YES. [2022-07-13 22:03:37,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2091 conditions, 1639 events. 42/1639 cut-off events. For 62/118 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10122 event pairs, 10 based on Foata normal form. 17/1577 useless extension candidates. Maximal degree in co-relation 2077. Up to 148 conditions per place. [2022-07-13 22:03:37,554 INFO L132 encePairwiseOnDemand]: 371/379 looper letters, 53 selfloop transitions, 5 changer transitions 4/377 dead transitions. [2022-07-13 22:03:37,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 377 transitions, 1092 flow [2022-07-13 22:03:37,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:03:37,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:03:37,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1869 transitions. [2022-07-13 22:03:37,558 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8218997361477572 [2022-07-13 22:03:37,558 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1869 transitions. [2022-07-13 22:03:37,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1869 transitions. [2022-07-13 22:03:37,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:37,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1869 transitions. [2022-07-13 22:03:37,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 311.5) internal successors, (1869), 6 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:37,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 379.0) internal successors, (2653), 7 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:37,565 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 379.0) internal successors, (2653), 7 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:37,565 INFO L186 Difference]: Start difference. First operand has 359 places, 361 transitions, 929 flow. Second operand 6 states and 1869 transitions. [2022-07-13 22:03:37,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 377 transitions, 1092 flow [2022-07-13 22:03:37,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 377 transitions, 1067 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-07-13 22:03:37,575 INFO L242 Difference]: Finished difference. Result has 365 places, 365 transitions, 943 flow [2022-07-13 22:03:37,575 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=943, PETRI_PLACES=365, PETRI_TRANSITIONS=365} [2022-07-13 22:03:37,577 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 22 predicate places. [2022-07-13 22:03:37,577 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 365 transitions, 943 flow [2022-07-13 22:03:37,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 308.1666666666667) internal successors, (1849), 6 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:37,588 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:37,589 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:37,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 22:03:37,806 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 [2022-07-13 22:03:37,806 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)] === [2022-07-13 22:03:37,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:37,807 INFO L85 PathProgramCache]: Analyzing trace with hash -886045462, now seen corresponding path program 1 times [2022-07-13 22:03:37,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:37,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167913139] [2022-07-13 22:03:37,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:37,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-13 22:03:37,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:37,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167913139] [2022-07-13 22:03:37,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167913139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:37,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:37,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:03:37,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434163339] [2022-07-13 22:03:37,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:37,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:03:37,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:37,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:03:37,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:03:37,874 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 379 [2022-07-13 22:03:37,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 365 transitions, 943 flow. Second operand has 4 states, 4 states have (on average 340.5) internal successors, (1362), 4 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:37,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:37,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 379 [2022-07-13 22:03:37,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:38,213 INFO L129 PetriNetUnfolder]: 52/1866 cut-off events. [2022-07-13 22:03:38,213 INFO L130 PetriNetUnfolder]: For 75/183 co-relation queries the response was YES. [2022-07-13 22:03:38,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2343 conditions, 1866 events. 52/1866 cut-off events. For 75/183 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 12032 event pairs, 18 based on Foata normal form. 8/1783 useless extension candidates. Maximal degree in co-relation 2325. Up to 65 conditions per place. [2022-07-13 22:03:38,232 INFO L132 encePairwiseOnDemand]: 374/379 looper letters, 32 selfloop transitions, 4 changer transitions 1/384 dead transitions. [2022-07-13 22:03:38,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 384 transitions, 1064 flow [2022-07-13 22:03:38,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:03:38,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:03:38,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1728 transitions. [2022-07-13 22:03:38,235 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9118733509234829 [2022-07-13 22:03:38,235 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1728 transitions. [2022-07-13 22:03:38,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1728 transitions. [2022-07-13 22:03:38,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:38,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1728 transitions. [2022-07-13 22:03:38,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 345.6) internal successors, (1728), 5 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:38,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 379.0) internal successors, (2274), 6 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:38,240 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 379.0) internal successors, (2274), 6 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:38,240 INFO L186 Difference]: Start difference. First operand has 365 places, 365 transitions, 943 flow. Second operand 5 states and 1728 transitions. [2022-07-13 22:03:38,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 384 transitions, 1064 flow [2022-07-13 22:03:38,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 384 transitions, 1056 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-07-13 22:03:38,247 INFO L242 Difference]: Finished difference. Result has 367 places, 367 transitions, 959 flow [2022-07-13 22:03:38,247 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=959, PETRI_PLACES=367, PETRI_TRANSITIONS=367} [2022-07-13 22:03:38,247 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 24 predicate places. [2022-07-13 22:03:38,247 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 367 transitions, 959 flow [2022-07-13 22:03:38,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 340.5) internal successors, (1362), 4 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:38,248 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:38,248 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:38,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:03:38,248 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)] === [2022-07-13 22:03:38,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:38,249 INFO L85 PathProgramCache]: Analyzing trace with hash -447190807, now seen corresponding path program 1 times [2022-07-13 22:03:38,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:38,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315657461] [2022-07-13 22:03:38,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:38,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:38,349 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-13 22:03:38,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:38,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315657461] [2022-07-13 22:03:38,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315657461] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:38,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289670483] [2022-07-13 22:03:38,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:38,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:38,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:38,351 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) [2022-07-13 22:03:38,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:03:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:38,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 22:03:38,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:38,642 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-13 22:03:38,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:03:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-13 22:03:38,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289670483] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:03:38,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:03:38,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-07-13 22:03:38,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361091297] [2022-07-13 22:03:38,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:03:38,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 22:03:38,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:38,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 22:03:38,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-07-13 22:03:38,735 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 379 [2022-07-13 22:03:38,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 367 transitions, 959 flow. Second operand has 22 states, 22 states have (on average 313.8636363636364) internal successors, (6905), 22 states have internal predecessors, (6905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:38,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:38,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 379 [2022-07-13 22:03:38,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:39,192 INFO L129 PetriNetUnfolder]: 6/868 cut-off events. [2022-07-13 22:03:39,192 INFO L130 PetriNetUnfolder]: For 100/114 co-relation queries the response was YES. [2022-07-13 22:03:39,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 868 events. 6/868 cut-off events. For 100/114 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3437 event pairs, 0 based on Foata normal form. 6/839 useless extension candidates. Maximal degree in co-relation 1186. Up to 65 conditions per place. [2022-07-13 22:03:39,200 INFO L132 encePairwiseOnDemand]: 355/379 looper letters, 57 selfloop transitions, 51 changer transitions 0/409 dead transitions. [2022-07-13 22:03:39,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 409 transitions, 1343 flow [2022-07-13 22:03:39,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:03:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:03:39,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5384 transitions. [2022-07-13 22:03:39,207 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.83563557349061 [2022-07-13 22:03:39,207 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5384 transitions. [2022-07-13 22:03:39,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5384 transitions. [2022-07-13 22:03:39,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:39,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5384 transitions. [2022-07-13 22:03:39,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 316.70588235294116) internal successors, (5384), 17 states have internal predecessors, (5384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:39,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 379.0) internal successors, (6822), 18 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:39,221 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 379.0) internal successors, (6822), 18 states have internal predecessors, (6822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:39,221 INFO L186 Difference]: Start difference. First operand has 367 places, 367 transitions, 959 flow. Second operand 17 states and 5384 transitions. [2022-07-13 22:03:39,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 409 transitions, 1343 flow [2022-07-13 22:03:39,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 409 transitions, 1343 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:03:39,227 INFO L242 Difference]: Finished difference. Result has 386 places, 388 transitions, 1222 flow [2022-07-13 22:03:39,228 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1222, PETRI_PLACES=386, PETRI_TRANSITIONS=388} [2022-07-13 22:03:39,228 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 43 predicate places. [2022-07-13 22:03:39,228 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 388 transitions, 1222 flow [2022-07-13 22:03:39,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 313.8636363636364) internal successors, (6905), 22 states have internal predecessors, (6905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:39,230 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:39,230 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:39,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:03:39,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:39,458 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)] === [2022-07-13 22:03:39,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:39,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1687705773, now seen corresponding path program 1 times [2022-07-13 22:03:39,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:39,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409551930] [2022-07-13 22:03:39,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:39,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:03:39,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:39,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409551930] [2022-07-13 22:03:39,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409551930] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:39,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746918826] [2022-07-13 22:03:39,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:39,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:39,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:39,529 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) [2022-07-13 22:03:39,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:03:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:39,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 22:03:39,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:03:39,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:03:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:03:39,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746918826] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:03:39,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:03:39,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-07-13 22:03:39,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720634963] [2022-07-13 22:03:39,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:03:39,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 22:03:39,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:39,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 22:03:39,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:03:39,830 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 379 [2022-07-13 22:03:39,832 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 388 transitions, 1222 flow. Second operand has 11 states, 11 states have (on average 340.3636363636364) internal successors, (3744), 11 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:39,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:39,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 379 [2022-07-13 22:03:39,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:40,300 INFO L129 PetriNetUnfolder]: 76/1973 cut-off events. [2022-07-13 22:03:40,301 INFO L130 PetriNetUnfolder]: For 166/342 co-relation queries the response was YES. [2022-07-13 22:03:40,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2691 conditions, 1973 events. 76/1973 cut-off events. For 166/342 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 12109 event pairs, 10 based on Foata normal form. 30/1919 useless extension candidates. Maximal degree in co-relation 2669. Up to 58 conditions per place. [2022-07-13 22:03:40,321 INFO L132 encePairwiseOnDemand]: 371/379 looper letters, 59 selfloop transitions, 13 changer transitions 1/440 dead transitions. [2022-07-13 22:03:40,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 440 transitions, 1518 flow [2022-07-13 22:03:40,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 22:03:40,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 22:03:40,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4456 transitions. [2022-07-13 22:03:40,328 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9044043028211893 [2022-07-13 22:03:40,328 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4456 transitions. [2022-07-13 22:03:40,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4456 transitions. [2022-07-13 22:03:40,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:40,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4456 transitions. [2022-07-13 22:03:40,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 342.7692307692308) internal successors, (4456), 13 states have internal predecessors, (4456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:40,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 379.0) internal successors, (5306), 14 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:40,341 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 379.0) internal successors, (5306), 14 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:40,341 INFO L186 Difference]: Start difference. First operand has 386 places, 388 transitions, 1222 flow. Second operand 13 states and 4456 transitions. [2022-07-13 22:03:40,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 440 transitions, 1518 flow [2022-07-13 22:03:40,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 440 transitions, 1451 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-07-13 22:03:40,348 INFO L242 Difference]: Finished difference. Result has 393 places, 397 transitions, 1228 flow [2022-07-13 22:03:40,349 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1228, PETRI_PLACES=393, PETRI_TRANSITIONS=397} [2022-07-13 22:03:40,349 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 50 predicate places. [2022-07-13 22:03:40,349 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 397 transitions, 1228 flow [2022-07-13 22:03:40,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 340.3636363636364) internal successors, (3744), 11 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:40,350 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:40,350 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:40,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:03:40,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:40,580 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)] === [2022-07-13 22:03:40,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:40,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1258064535, now seen corresponding path program 2 times [2022-07-13 22:03:40,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:40,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356545098] [2022-07-13 22:03:40,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:40,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:40,779 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:03:40,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:40,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356545098] [2022-07-13 22:03:40,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356545098] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:40,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:03:40,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:03:40,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071320405] [2022-07-13 22:03:40,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:40,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:03:40,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:40,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:03:40,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:03:40,782 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 379 [2022-07-13 22:03:40,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 397 transitions, 1228 flow. Second operand has 7 states, 7 states have (on average 303.0) internal successors, (2121), 7 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:40,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:40,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 379 [2022-07-13 22:03:40,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:41,248 INFO L129 PetriNetUnfolder]: 80/1532 cut-off events. [2022-07-13 22:03:41,249 INFO L130 PetriNetUnfolder]: For 267/367 co-relation queries the response was YES. [2022-07-13 22:03:41,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2474 conditions, 1532 events. 80/1532 cut-off events. For 267/367 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8716 event pairs, 12 based on Foata normal form. 47/1500 useless extension candidates. Maximal degree in co-relation 2450. Up to 144 conditions per place. [2022-07-13 22:03:41,270 INFO L132 encePairwiseOnDemand]: 369/379 looper letters, 67 selfloop transitions, 11 changer transitions 5/420 dead transitions. [2022-07-13 22:03:41,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 420 transitions, 1462 flow [2022-07-13 22:03:41,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:03:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:03:41,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2744 transitions. [2022-07-13 22:03:41,274 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8044561712107886 [2022-07-13 22:03:41,274 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2744 transitions. [2022-07-13 22:03:41,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2744 transitions. [2022-07-13 22:03:41,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:41,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2744 transitions. [2022-07-13 22:03:41,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 304.8888888888889) internal successors, (2744), 9 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:41,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 379.0) internal successors, (3790), 10 states have internal predecessors, (3790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:41,283 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 379.0) internal successors, (3790), 10 states have internal predecessors, (3790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:41,283 INFO L186 Difference]: Start difference. First operand has 393 places, 397 transitions, 1228 flow. Second operand 9 states and 2744 transitions. [2022-07-13 22:03:41,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 420 transitions, 1462 flow [2022-07-13 22:03:41,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 420 transitions, 1446 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-07-13 22:03:41,291 INFO L242 Difference]: Finished difference. Result has 404 places, 399 transitions, 1261 flow [2022-07-13 22:03:41,291 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1261, PETRI_PLACES=404, PETRI_TRANSITIONS=399} [2022-07-13 22:03:41,291 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 61 predicate places. [2022-07-13 22:03:41,291 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 399 transitions, 1261 flow [2022-07-13 22:03:41,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 303.0) internal successors, (2121), 7 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:41,292 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:41,292 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:41,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:03:41,292 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)] === [2022-07-13 22:03:41,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:41,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1824018327, now seen corresponding path program 2 times [2022-07-13 22:03:41,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:41,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916940708] [2022-07-13 22:03:41,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:41,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:03:41,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:41,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916940708] [2022-07-13 22:03:41,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916940708] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:41,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047408924] [2022-07-13 22:03:41,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:03:41,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:41,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:41,412 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) [2022-07-13 22:03:41,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:03:41,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 22:03:41,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:03:41,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 22:03:41,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:41,658 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-07-13 22:03:41,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:03:41,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047408924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:41,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:03:41,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-07-13 22:03:41,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879981497] [2022-07-13 22:03:41,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:41,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:03:41,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:41,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:03:41,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:03:41,661 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 379 [2022-07-13 22:03:41,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 399 transitions, 1261 flow. Second operand has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:41,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:41,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 379 [2022-07-13 22:03:41,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:44,559 INFO L129 PetriNetUnfolder]: 2777/12326 cut-off events. [2022-07-13 22:03:44,559 INFO L130 PetriNetUnfolder]: For 1832/5129 co-relation queries the response was YES. [2022-07-13 22:03:44,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18229 conditions, 12326 events. 2777/12326 cut-off events. For 1832/5129 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 145586 event pairs, 1677 based on Foata normal form. 2/10757 useless extension candidates. Maximal degree in co-relation 18200. Up to 3091 conditions per place. [2022-07-13 22:03:44,670 INFO L132 encePairwiseOnDemand]: 368/379 looper letters, 88 selfloop transitions, 18 changer transitions 10/461 dead transitions. [2022-07-13 22:03:44,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 461 transitions, 1646 flow [2022-07-13 22:03:44,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:03:44,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:03:44,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3047 transitions. [2022-07-13 22:03:44,675 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.803957783641161 [2022-07-13 22:03:44,675 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3047 transitions. [2022-07-13 22:03:44,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3047 transitions. [2022-07-13 22:03:44,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:44,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3047 transitions. [2022-07-13 22:03:44,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 304.7) internal successors, (3047), 10 states have internal predecessors, (3047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:44,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 379.0) internal successors, (4169), 11 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:44,685 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 379.0) internal successors, (4169), 11 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:44,685 INFO L186 Difference]: Start difference. First operand has 404 places, 399 transitions, 1261 flow. Second operand 10 states and 3047 transitions. [2022-07-13 22:03:44,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 461 transitions, 1646 flow [2022-07-13 22:03:44,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 461 transitions, 1617 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-07-13 22:03:44,698 INFO L242 Difference]: Finished difference. Result has 412 places, 416 transitions, 1358 flow [2022-07-13 22:03:44,699 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=1240, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1358, PETRI_PLACES=412, PETRI_TRANSITIONS=416} [2022-07-13 22:03:44,699 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 69 predicate places. [2022-07-13 22:03:44,700 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 416 transitions, 1358 flow [2022-07-13 22:03:44,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:44,700 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:44,701 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:44,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-13 22:03:44,917 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,SelfDestructingSolverStorable10 [2022-07-13 22:03:44,918 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)] === [2022-07-13 22:03:44,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:44,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1446436149, now seen corresponding path program 3 times [2022-07-13 22:03:44,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:44,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044472186] [2022-07-13 22:03:44,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:44,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 22:03:45,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:45,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044472186] [2022-07-13 22:03:45,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044472186] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:45,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997667023] [2022-07-13 22:03:45,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 22:03:45,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:45,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:45,160 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) [2022-07-13 22:03:45,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:03:45,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-13 22:03:45,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:03:45,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 22:03:45,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:45,404 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-07-13 22:03:45,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:03:45,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997667023] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:03:45,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:03:45,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-07-13 22:03:45,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976476851] [2022-07-13 22:03:45,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:03:45,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:03:45,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:45,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:03:45,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:03:45,407 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 379 [2022-07-13 22:03:45,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 416 transitions, 1358 flow. Second operand has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:45,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:45,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 379 [2022-07-13 22:03:45,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:03:48,443 INFO L129 PetriNetUnfolder]: 2756/12528 cut-off events. [2022-07-13 22:03:48,444 INFO L130 PetriNetUnfolder]: For 4386/8994 co-relation queries the response was YES. [2022-07-13 22:03:48,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21041 conditions, 12528 events. 2756/12528 cut-off events. For 4386/8994 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 147725 event pairs, 1801 based on Foata normal form. 7/10993 useless extension candidates. Maximal degree in co-relation 21008. Up to 3129 conditions per place. [2022-07-13 22:03:48,557 INFO L132 encePairwiseOnDemand]: 368/379 looper letters, 96 selfloop transitions, 26 changer transitions 10/477 dead transitions. [2022-07-13 22:03:48,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 477 transitions, 1838 flow [2022-07-13 22:03:48,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:03:48,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:03:48,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3046 transitions. [2022-07-13 22:03:48,562 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8036939313984169 [2022-07-13 22:03:48,562 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3046 transitions. [2022-07-13 22:03:48,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3046 transitions. [2022-07-13 22:03:48,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:03:48,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3046 transitions. [2022-07-13 22:03:48,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:48,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 379.0) internal successors, (4169), 11 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:48,574 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 379.0) internal successors, (4169), 11 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:48,574 INFO L186 Difference]: Start difference. First operand has 412 places, 416 transitions, 1358 flow. Second operand 10 states and 3046 transitions. [2022-07-13 22:03:48,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 477 transitions, 1838 flow [2022-07-13 22:03:48,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 477 transitions, 1828 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-07-13 22:03:48,595 INFO L242 Difference]: Finished difference. Result has 420 places, 433 transitions, 1519 flow [2022-07-13 22:03:48,596 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=1354, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1519, PETRI_PLACES=420, PETRI_TRANSITIONS=433} [2022-07-13 22:03:48,597 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 77 predicate places. [2022-07-13 22:03:48,598 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 433 transitions, 1519 flow [2022-07-13 22:03:48,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:03:48,598 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:03:48,598 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:03:48,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 22:03:48,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:48,817 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:03:48,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:03:48,817 INFO L85 PathProgramCache]: Analyzing trace with hash -509345462, now seen corresponding path program 1 times [2022-07-13 22:03:48,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:03:48,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677357814] [2022-07-13 22:03:48,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:48,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:03:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:48,904 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-07-13 22:03:48,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:03:48,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677357814] [2022-07-13 22:03:48,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677357814] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:03:48,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419994192] [2022-07-13 22:03:48,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:03:48,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:03:48,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:03:48,906 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) [2022-07-13 22:03:48,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 22:03:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:03:49,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 22:03:49,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:03:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-13 22:03:49,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:03:49,374 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-13 22:03:49,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419994192] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:03:49,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:03:49,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 16 [2022-07-13 22:03:49,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73745056] [2022-07-13 22:03:49,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:03:49,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 22:03:49,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:03:49,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 22:03:49,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:03:49,378 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 379 [2022-07-13 22:03:49,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 433 transitions, 1519 flow. Second operand has 16 states, 16 states have (on average 329.5625) internal successors, (5273), 16 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) [2022-07-13 22:03:49,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:03:49,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 379 [2022-07-13 22:03:49,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:04:11,478 INFO L129 PetriNetUnfolder]: 14932/83234 cut-off events. [2022-07-13 22:04:11,479 INFO L130 PetriNetUnfolder]: For 28373/28419 co-relation queries the response was YES. [2022-07-13 22:04:12,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148351 conditions, 83234 events. 14932/83234 cut-off events. For 28373/28419 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 1155198 event pairs, 1205 based on Foata normal form. 824/79396 useless extension candidates. Maximal degree in co-relation 148316. Up to 2762 conditions per place. [2022-07-13 22:04:12,880 INFO L132 encePairwiseOnDemand]: 364/379 looper letters, 929 selfloop transitions, 328 changer transitions 24/1669 dead transitions. [2022-07-13 22:04:12,881 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 1669 transitions, 8441 flow [2022-07-13 22:04:12,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-07-13 22:04:12,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2022-07-13 22:04:12,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 53642 transitions. [2022-07-13 22:04:12,923 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8791032301414313 [2022-07-13 22:04:12,923 INFO L72 ComplementDD]: Start complementDD. Operand 161 states and 53642 transitions. [2022-07-13 22:04:12,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 161 states and 53642 transitions. [2022-07-13 22:04:12,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:04:12,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 161 states and 53642 transitions. [2022-07-13 22:04:13,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 162 states, 161 states have (on average 333.1801242236025) internal successors, (53642), 161 states have internal predecessors, (53642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:13,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 162 states, 162 states have (on average 379.0) internal successors, (61398), 162 states have internal predecessors, (61398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:13,080 INFO L81 ComplementDD]: Finished complementDD. Result has 162 states, 162 states have (on average 379.0) internal successors, (61398), 162 states have internal predecessors, (61398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:13,081 INFO L186 Difference]: Start difference. First operand has 420 places, 433 transitions, 1519 flow. Second operand 161 states and 53642 transitions. [2022-07-13 22:04:13,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 1669 transitions, 8441 flow [2022-07-13 22:04:13,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 1669 transitions, 8405 flow, removed 18 selfloop flow, removed 2 redundant places. [2022-07-13 22:04:13,757 INFO L242 Difference]: Finished difference. Result has 685 places, 768 transitions, 4523 flow [2022-07-13 22:04:13,758 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=161, PETRI_FLOW=4523, PETRI_PLACES=685, PETRI_TRANSITIONS=768} [2022-07-13 22:04:13,758 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 342 predicate places. [2022-07-13 22:04:13,759 INFO L495 AbstractCegarLoop]: Abstraction has has 685 places, 768 transitions, 4523 flow [2022-07-13 22:04:13,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 329.5625) internal successors, (5273), 16 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) [2022-07-13 22:04:13,759 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:04:13,760 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:04:13,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 22:04:13,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:04:13,974 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:04:13,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:04:13,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1365338642, now seen corresponding path program 1 times [2022-07-13 22:04:13,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:04:13,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754646992] [2022-07-13 22:04:13,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:13,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:04:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2022-07-13 22:04:14,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:04:14,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754646992] [2022-07-13 22:04:14,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754646992] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:04:14,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894198534] [2022-07-13 22:04:14,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:04:14,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:04:14,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:04:14,076 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:04:14,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 22:04:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:04:14,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:04:14,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:04:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2022-07-13 22:04:14,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:04:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2022-07-13 22:04:14,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894198534] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:04:14,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:04:14,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2022-07-13 22:04:14,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974027987] [2022-07-13 22:04:14,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:04:14,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:04:14,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:04:14,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:04:14,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:04:14,464 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 379 [2022-07-13 22:04:14,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 685 places, 768 transitions, 4523 flow. Second operand has 5 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:04:14,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:04:14,465 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 379 [2022-07-13 22:04:14,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand