./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 eb692b52 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-?-eb692b5 [2022-07-19 21:24:54,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:24:54,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:24:54,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:24:54,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:24:54,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:24:54,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:24:54,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:24:54,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:24:54,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:24:54,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:24:54,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:24:54,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:24:54,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:24:54,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:24:54,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:24:54,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:24:54,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:24:54,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:24:54,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:24:54,254 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:24:54,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:24:54,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:24:54,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:24:54,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:24:54,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:24:54,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:24:54,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:24:54,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:24:54,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:24:54,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:24:54,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:24:54,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:24:54,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:24:54,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:24:54,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:24:54,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:24:54,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:24:54,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:24:54,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:24:54,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:24:54,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:24:54,271 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:24:54,292 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:24:54,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:24:54,293 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:24:54,293 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:24:54,294 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:24:54,294 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:24:54,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:24:54,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:24:54,295 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:24:54,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:24:54,295 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:24:54,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:24:54,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:24:54,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:24:54,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:24:54,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:24:54,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:24:54,296 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:24:54,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:24:54,297 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:24:54,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:24:54,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:24:54,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:24:54,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:24:54,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:24:54,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:24:54,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:24:54,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:24:54,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:24:54,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:24:54,298 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:24:54,299 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:24:54,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:24:54,299 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 [2022-07-19 21:24:54,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:24:54,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:24:54,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:24:54,521 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:24:54,522 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:24:54,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2022-07-19 21:24:54,580 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a4f4a728/881519bd982c45b88fee0616a197515a/FLAGfc1d9d962 [2022-07-19 21:24:54,928 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:24:54,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2022-07-19 21:24:54,933 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a4f4a728/881519bd982c45b88fee0616a197515a/FLAGfc1d9d962 [2022-07-19 21:24:55,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a4f4a728/881519bd982c45b88fee0616a197515a [2022-07-19 21:24:55,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:24:55,372 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:24:55,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:24:55,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:24:55,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:24:55,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:24:55" (1/1) ... [2022-07-19 21:24:55,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db377fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:24:55, skipping insertion in model container [2022-07-19 21:24:55,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:24:55" (1/1) ... [2022-07-19 21:24:55,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:24:55,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:24:55,529 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] [2022-07-19 21:24:55,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:24:55,539 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:24:55,555 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] [2022-07-19 21:24:55,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:24:55,567 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:24:55,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:24:55 WrapperNode [2022-07-19 21:24:55,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:24:55,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:24:55,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:24:55,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:24:55,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:24:55" (1/1) ... [2022-07-19 21:24:55,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:24:55" (1/1) ... [2022-07-19 21:24:55,602 INFO L137 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 287 [2022-07-19 21:24:55,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:24:55,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:24:55,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:24:55,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:24:55,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:24:55" (1/1) ... [2022-07-19 21:24:55,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:24:55" (1/1) ... [2022-07-19 21:24:55,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:24:55" (1/1) ... [2022-07-19 21:24:55,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:24:55" (1/1) ... [2022-07-19 21:24:55,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:24:55" (1/1) ... [2022-07-19 21:24:55,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:24:55" (1/1) ... [2022-07-19 21:24:55,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:24:55" (1/1) ... [2022-07-19 21:24:55,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:24:55,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:24:55,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:24:55,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:24:55,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:24:55" (1/1) ... [2022-07-19 21:24:55,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:24:55,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:24:55,667 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) [2022-07-19 21:24:55,669 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 [2022-07-19 21:24:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:24:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:24:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:24:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:24:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:24:55,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:24:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:24:55,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:24:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-19 21:24:55,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-19 21:24:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:24:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:24:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:24:55,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:24:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:24:55,699 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:24:55,759 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:24:55,760 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:24:56,158 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:24:56,169 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:24:56,169 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-19 21:24:56,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:24:56 BoogieIcfgContainer [2022-07-19 21:24:56,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:24:56,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:24:56,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:24:56,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:24:56,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:24:55" (1/3) ... [2022-07-19 21:24:56,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1583ec08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:24:56, skipping insertion in model container [2022-07-19 21:24:56,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:24:55" (2/3) ... [2022-07-19 21:24:56,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1583ec08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:24:56, skipping insertion in model container [2022-07-19 21:24:56,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:24:56" (3/3) ... [2022-07-19 21:24:56,177 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2022-07-19 21:24:56,182 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:24:56,188 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:24:56,188 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:24:56,188 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:24:56,265 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-19 21:24:56,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 357 places, 379 transitions, 782 flow [2022-07-19 21:24:56,436 INFO L129 PetriNetUnfolder]: 32/376 cut-off events. [2022-07-19 21:24:56,436 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:24:56,451 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. [2022-07-19 21:24:56,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 357 places, 379 transitions, 782 flow [2022-07-19 21:24:56,456 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 343 places, 365 transitions, 748 flow [2022-07-19 21:24:56,463 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:24:56,467 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@66307489, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@66d8fdf2 [2022-07-19 21:24:56,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:24:56,515 INFO L129 PetriNetUnfolder]: 32/364 cut-off events. [2022-07-19 21:24:56,515 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:24:56,516 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:24:56,517 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] [2022-07-19 21:24:56,517 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)] === [2022-07-19 21:24:56,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:24:56,521 INFO L85 PathProgramCache]: Analyzing trace with hash -952802072, now seen corresponding path program 1 times [2022-07-19 21:24:56,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:24:56,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335372850] [2022-07-19 21:24:56,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:24:56,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:24:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:24:56,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:24:56,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:24:56,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335372850] [2022-07-19 21:24:56,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335372850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:24:56,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:24:56,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:24:56,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766902651] [2022-07-19 21:24:56,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:24:56,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 21:24:56,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:24:56,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 21:24:56,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 21:24:56,761 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 379 [2022-07-19 21:24:56,767 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) [2022-07-19 21:24:56,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:24:56,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 379 [2022-07-19 21:24:56,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:24:56,823 INFO L129 PetriNetUnfolder]: 9/342 cut-off events. [2022-07-19 21:24:56,824 INFO L130 PetriNetUnfolder]: For 12/14 co-relation queries the response was YES. [2022-07-19 21:24:56,826 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. [2022-07-19 21:24:56,827 INFO L132 encePairwiseOnDemand]: 356/379 looper letters, 6 selfloop transitions, 0 changer transitions 8/342 dead transitions. [2022-07-19 21:24:56,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 342 transitions, 714 flow [2022-07-19 21:24:56,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 21:24:56,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-19 21:24:56,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 727 transitions. [2022-07-19 21:24:56,838 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9591029023746702 [2022-07-19 21:24:56,838 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 727 transitions. [2022-07-19 21:24:56,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 727 transitions. [2022-07-19 21:24:56,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:24:56,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 727 transitions. [2022-07-19 21:24:56,845 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) [2022-07-19 21:24:56,849 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) [2022-07-19 21:24:56,850 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) [2022-07-19 21:24:56,851 INFO L186 Difference]: Start difference. First operand has 343 places, 365 transitions, 748 flow. Second operand 2 states and 727 transitions. [2022-07-19 21:24:56,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 342 transitions, 714 flow [2022-07-19 21:24:56,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 342 transitions, 702 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-19 21:24:56,859 INFO L242 Difference]: Finished difference. Result has 338 places, 334 transitions, 674 flow [2022-07-19 21:24:56,861 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} [2022-07-19 21:24:56,863 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, -5 predicate places. [2022-07-19 21:24:56,863 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 334 transitions, 674 flow [2022-07-19 21:24:56,864 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) [2022-07-19 21:24:56,864 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:24:56,864 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] [2022-07-19 21:24:56,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:24:56,865 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)] === [2022-07-19 21:24:56,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:24:56,865 INFO L85 PathProgramCache]: Analyzing trace with hash -936950910, now seen corresponding path program 1 times [2022-07-19 21:24:56,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:24:56,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597851555] [2022-07-19 21:24:56,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:24:56,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:24:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:24:56,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:24:56,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:24:56,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597851555] [2022-07-19 21:24:56,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597851555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:24:56,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:24:56,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:24:56,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455614740] [2022-07-19 21:24:56,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:24:56,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:24:56,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:24:56,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:24:56,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:24:56,961 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 379 [2022-07-19 21:24:56,962 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) [2022-07-19 21:24:56,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:24:56,963 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 379 [2022-07-19 21:24:56,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:24:57,150 INFO L129 PetriNetUnfolder]: 54/867 cut-off events. [2022-07-19 21:24:57,150 INFO L130 PetriNetUnfolder]: For 25/31 co-relation queries the response was YES. [2022-07-19 21:24:57,155 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. [2022-07-19 21:24:57,157 INFO L132 encePairwiseOnDemand]: 374/379 looper letters, 31 selfloop transitions, 4 changer transitions 0/352 dead transitions. [2022-07-19 21:24:57,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 352 transitions, 790 flow [2022-07-19 21:24:57,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:24:57,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:24:57,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1726 transitions. [2022-07-19 21:24:57,161 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9108179419525066 [2022-07-19 21:24:57,162 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1726 transitions. [2022-07-19 21:24:57,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1726 transitions. [2022-07-19 21:24:57,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:24:57,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1726 transitions. [2022-07-19 21:24:57,165 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) [2022-07-19 21:24:57,169 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) [2022-07-19 21:24:57,169 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) [2022-07-19 21:24:57,170 INFO L186 Difference]: Start difference. First operand has 338 places, 334 transitions, 674 flow. Second operand 5 states and 1726 transitions. [2022-07-19 21:24:57,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 352 transitions, 790 flow [2022-07-19 21:24:57,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 352 transitions, 790 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:24:57,177 INFO L242 Difference]: Finished difference. Result has 337 places, 337 transitions, 703 flow [2022-07-19 21:24:57,177 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} [2022-07-19 21:24:57,178 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, -6 predicate places. [2022-07-19 21:24:57,178 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 337 transitions, 703 flow [2022-07-19 21:24:57,179 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) [2022-07-19 21:24:57,179 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:24:57,180 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] [2022-07-19 21:24:57,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:24:57,180 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)] === [2022-07-19 21:24:57,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:24:57,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1135624034, now seen corresponding path program 1 times [2022-07-19 21:24:57,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:24:57,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732219414] [2022-07-19 21:24:57,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:24:57,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:24:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:24:57,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:24:57,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:24:57,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732219414] [2022-07-19 21:24:57,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732219414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:24:57,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:24:57,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:24:57,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154533674] [2022-07-19 21:24:57,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:24:57,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:24:57,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:24:57,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:24:57,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:24:57,271 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 379 [2022-07-19 21:24:57,273 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) [2022-07-19 21:24:57,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:24:57,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 379 [2022-07-19 21:24:57,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:24:57,429 INFO L129 PetriNetUnfolder]: 83/1014 cut-off events. [2022-07-19 21:24:57,430 INFO L130 PetriNetUnfolder]: For 87/161 co-relation queries the response was YES. [2022-07-19 21:24:57,435 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. [2022-07-19 21:24:57,437 INFO L132 encePairwiseOnDemand]: 374/379 looper letters, 29 selfloop transitions, 4 changer transitions 0/353 dead transitions. [2022-07-19 21:24:57,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 353 transitions, 809 flow [2022-07-19 21:24:57,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:24:57,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:24:57,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1724 transitions. [2022-07-19 21:24:57,440 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9097625329815303 [2022-07-19 21:24:57,441 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1724 transitions. [2022-07-19 21:24:57,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1724 transitions. [2022-07-19 21:24:57,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:24:57,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1724 transitions. [2022-07-19 21:24:57,444 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) [2022-07-19 21:24:57,446 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) [2022-07-19 21:24:57,447 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) [2022-07-19 21:24:57,448 INFO L186 Difference]: Start difference. First operand has 337 places, 337 transitions, 703 flow. Second operand 5 states and 1724 transitions. [2022-07-19 21:24:57,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 353 transitions, 809 flow [2022-07-19 21:24:57,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 353 transitions, 809 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:24:57,453 INFO L242 Difference]: Finished difference. Result has 344 places, 340 transitions, 732 flow [2022-07-19 21:24:57,453 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} [2022-07-19 21:24:57,455 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 1 predicate places. [2022-07-19 21:24:57,455 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 340 transitions, 732 flow [2022-07-19 21:24:57,456 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) [2022-07-19 21:24:57,456 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:24:57,456 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] [2022-07-19 21:24:57,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:24:57,456 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)] === [2022-07-19 21:24:57,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:24:57,457 INFO L85 PathProgramCache]: Analyzing trace with hash -368116362, now seen corresponding path program 1 times [2022-07-19 21:24:57,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:24:57,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133693976] [2022-07-19 21:24:57,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:24:57,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:24:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:24:57,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:24:57,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:24:57,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133693976] [2022-07-19 21:24:57,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133693976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:24:57,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:24:57,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:24:57,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100127114] [2022-07-19 21:24:57,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:24:57,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:24:57,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:24:57,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:24:57,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:24:57,594 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 379 [2022-07-19 21:24:57,596 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) [2022-07-19 21:24:57,596 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:24:57,596 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 379 [2022-07-19 21:24:57,596 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:24:57,722 INFO L129 PetriNetUnfolder]: 7/568 cut-off events. [2022-07-19 21:24:57,723 INFO L130 PetriNetUnfolder]: For 17/27 co-relation queries the response was YES. [2022-07-19 21:24:57,726 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. [2022-07-19 21:24:57,729 INFO L132 encePairwiseOnDemand]: 364/379 looper letters, 42 selfloop transitions, 12 changer transitions 0/352 dead transitions. [2022-07-19 21:24:57,729 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 352 transitions, 864 flow [2022-07-19 21:24:57,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:24:57,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:24:57,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1622 transitions. [2022-07-19 21:24:57,732 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8559366754617415 [2022-07-19 21:24:57,732 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1622 transitions. [2022-07-19 21:24:57,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1622 transitions. [2022-07-19 21:24:57,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:24:57,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1622 transitions. [2022-07-19 21:24:57,738 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) [2022-07-19 21:24:57,750 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) [2022-07-19 21:24:57,751 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) [2022-07-19 21:24:57,751 INFO L186 Difference]: Start difference. First operand has 344 places, 340 transitions, 732 flow. Second operand 5 states and 1622 transitions. [2022-07-19 21:24:57,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 352 transitions, 864 flow [2022-07-19 21:24:57,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 352 transitions, 864 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:24:57,757 INFO L242 Difference]: Finished difference. Result has 349 places, 343 transitions, 780 flow [2022-07-19 21:24:57,758 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} [2022-07-19 21:24:57,759 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 6 predicate places. [2022-07-19 21:24:57,763 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 343 transitions, 780 flow [2022-07-19 21:24:57,764 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) [2022-07-19 21:24:57,764 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:24:57,764 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] [2022-07-19 21:24:57,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:24:57,765 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)] === [2022-07-19 21:24:57,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:24:57,765 INFO L85 PathProgramCache]: Analyzing trace with hash 690744834, now seen corresponding path program 1 times [2022-07-19 21:24:57,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:24:57,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903159153] [2022-07-19 21:24:57,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:24:57,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:24:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:24:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:24:57,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:24:57,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903159153] [2022-07-19 21:24:57,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903159153] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:24:57,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515608183] [2022-07-19 21:24:57,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:24:57,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:24:57,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:24:57,892 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) [2022-07-19 21:24:57,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:24:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:24:58,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 21:24:58,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:24:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:24:58,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:24:58,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:24:58,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515608183] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:24:58,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:24:58,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-07-19 21:24:58,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292265745] [2022-07-19 21:24:58,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:24:58,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 21:24:58,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:24:58,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 21:24:58,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:24:58,196 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 379 [2022-07-19 21:24:58,200 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) [2022-07-19 21:24:58,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:24:58,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 379 [2022-07-19 21:24:58,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:24:58,473 INFO L129 PetriNetUnfolder]: 7/595 cut-off events. [2022-07-19 21:24:58,473 INFO L130 PetriNetUnfolder]: For 29/39 co-relation queries the response was YES. [2022-07-19 21:24:58,476 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. [2022-07-19 21:24:58,477 INFO L132 encePairwiseOnDemand]: 355/379 looper letters, 45 selfloop transitions, 33 changer transitions 0/373 dead transitions. [2022-07-19 21:24:58,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 373 transitions, 1002 flow [2022-07-19 21:24:58,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:24:58,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:24:58,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3494 transitions. [2022-07-19 21:24:58,482 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8380906692252339 [2022-07-19 21:24:58,483 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3494 transitions. [2022-07-19 21:24:58,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3494 transitions. [2022-07-19 21:24:58,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:24:58,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3494 transitions. [2022-07-19 21:24:58,489 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) [2022-07-19 21:24:58,493 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) [2022-07-19 21:24:58,494 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) [2022-07-19 21:24:58,494 INFO L186 Difference]: Start difference. First operand has 349 places, 343 transitions, 780 flow. Second operand 11 states and 3494 transitions. [2022-07-19 21:24:58,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 373 transitions, 1002 flow [2022-07-19 21:24:58,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 373 transitions, 984 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-19 21:24:58,501 INFO L242 Difference]: Finished difference. Result has 359 places, 361 transitions, 929 flow [2022-07-19 21:24:58,501 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} [2022-07-19 21:24:58,503 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 16 predicate places. [2022-07-19 21:24:58,503 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 361 transitions, 929 flow [2022-07-19 21:24:58,506 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) [2022-07-19 21:24:58,506 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:24:58,506 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] [2022-07-19 21:24:58,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 21:24:58,746 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 [2022-07-19 21:24:58,748 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)] === [2022-07-19 21:24:58,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:24:58,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1161919554, now seen corresponding path program 2 times [2022-07-19 21:24:58,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:24:58,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540281808] [2022-07-19 21:24:58,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:24:58,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:24:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:24:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-19 21:24:58,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:24:58,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540281808] [2022-07-19 21:24:58,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540281808] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:24:58,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611557358] [2022-07-19 21:24:58,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:24:58,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:24:58,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:24:58,884 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) [2022-07-19 21:24:58,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:24:58,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-19 21:24:58,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:24:58,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 21:24:59,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:24:59,103 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-19 21:24:59,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:24:59,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611557358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:24:59,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:24:59,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-07-19 21:24:59,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276435264] [2022-07-19 21:24:59,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:24:59,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:24:59,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:24:59,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:24:59,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:24:59,109 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 379 [2022-07-19 21:24:59,111 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) [2022-07-19 21:24:59,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:24:59,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 379 [2022-07-19 21:24:59,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:24:59,408 INFO L129 PetriNetUnfolder]: 42/1639 cut-off events. [2022-07-19 21:24:59,408 INFO L130 PetriNetUnfolder]: For 62/118 co-relation queries the response was YES. [2022-07-19 21:24:59,418 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. [2022-07-19 21:24:59,422 INFO L132 encePairwiseOnDemand]: 371/379 looper letters, 53 selfloop transitions, 5 changer transitions 4/377 dead transitions. [2022-07-19 21:24:59,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 377 transitions, 1092 flow [2022-07-19 21:24:59,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:24:59,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:24:59,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1869 transitions. [2022-07-19 21:24:59,426 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8218997361477572 [2022-07-19 21:24:59,427 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1869 transitions. [2022-07-19 21:24:59,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1869 transitions. [2022-07-19 21:24:59,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:24:59,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1869 transitions. [2022-07-19 21:24:59,430 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) [2022-07-19 21:24:59,433 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) [2022-07-19 21:24:59,433 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) [2022-07-19 21:24:59,434 INFO L186 Difference]: Start difference. First operand has 359 places, 361 transitions, 929 flow. Second operand 6 states and 1869 transitions. [2022-07-19 21:24:59,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 377 transitions, 1092 flow [2022-07-19 21:24:59,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 377 transitions, 1067 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-07-19 21:24:59,443 INFO L242 Difference]: Finished difference. Result has 365 places, 365 transitions, 943 flow [2022-07-19 21:24:59,443 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} [2022-07-19 21:24:59,445 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 22 predicate places. [2022-07-19 21:24:59,445 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 365 transitions, 943 flow [2022-07-19 21:24:59,447 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) [2022-07-19 21:24:59,447 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:24:59,447 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] [2022-07-19 21:24:59,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 21:24:59,664 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 [2022-07-19 21:24:59,664 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)] === [2022-07-19 21:24:59,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:24:59,665 INFO L85 PathProgramCache]: Analyzing trace with hash -886045462, now seen corresponding path program 1 times [2022-07-19 21:24:59,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:24:59,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674673986] [2022-07-19 21:24:59,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:24:59,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:24:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:24:59,738 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-19 21:24:59,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:24:59,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674673986] [2022-07-19 21:24:59,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674673986] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:24:59,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:24:59,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:24:59,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818833343] [2022-07-19 21:24:59,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:24:59,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:24:59,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:24:59,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:24:59,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:24:59,741 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 379 [2022-07-19 21:24:59,743 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) [2022-07-19 21:24:59,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:24:59,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 379 [2022-07-19 21:24:59,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:00,068 INFO L129 PetriNetUnfolder]: 52/1866 cut-off events. [2022-07-19 21:25:00,069 INFO L130 PetriNetUnfolder]: For 75/183 co-relation queries the response was YES. [2022-07-19 21:25:00,118 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. [2022-07-19 21:25:00,123 INFO L132 encePairwiseOnDemand]: 374/379 looper letters, 32 selfloop transitions, 4 changer transitions 1/384 dead transitions. [2022-07-19 21:25:00,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 384 transitions, 1064 flow [2022-07-19 21:25:00,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:25:00,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:25:00,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1728 transitions. [2022-07-19 21:25:00,126 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9118733509234829 [2022-07-19 21:25:00,126 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1728 transitions. [2022-07-19 21:25:00,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1728 transitions. [2022-07-19 21:25:00,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:00,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1728 transitions. [2022-07-19 21:25:00,130 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) [2022-07-19 21:25:00,132 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) [2022-07-19 21:25:00,132 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) [2022-07-19 21:25:00,132 INFO L186 Difference]: Start difference. First operand has 365 places, 365 transitions, 943 flow. Second operand 5 states and 1728 transitions. [2022-07-19 21:25:00,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 384 transitions, 1064 flow [2022-07-19 21:25:00,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 384 transitions, 1056 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-07-19 21:25:00,138 INFO L242 Difference]: Finished difference. Result has 367 places, 367 transitions, 959 flow [2022-07-19 21:25:00,138 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} [2022-07-19 21:25:00,138 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 24 predicate places. [2022-07-19 21:25:00,139 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 367 transitions, 959 flow [2022-07-19 21:25:00,139 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) [2022-07-19 21:25:00,139 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:00,139 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] [2022-07-19 21:25:00,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:25:00,140 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)] === [2022-07-19 21:25:00,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:00,140 INFO L85 PathProgramCache]: Analyzing trace with hash -447190807, now seen corresponding path program 1 times [2022-07-19 21:25:00,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:00,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538841717] [2022-07-19 21:25:00,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:00,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:00,244 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-19 21:25:00,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:00,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538841717] [2022-07-19 21:25:00,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538841717] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:25:00,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123419709] [2022-07-19 21:25:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:00,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:25:00,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:25:00,260 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) [2022-07-19 21:25:00,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 21:25:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:00,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 21:25:00,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:25:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-19 21:25:00,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:25:00,583 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-19 21:25:00,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123419709] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:25:00,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:25:00,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-07-19 21:25:00,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564105955] [2022-07-19 21:25:00,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:25:00,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 21:25:00,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:00,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 21:25:00,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-07-19 21:25:00,589 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 379 [2022-07-19 21:25:00,593 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) [2022-07-19 21:25:00,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:00,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 379 [2022-07-19 21:25:00,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:01,023 INFO L129 PetriNetUnfolder]: 6/868 cut-off events. [2022-07-19 21:25:01,023 INFO L130 PetriNetUnfolder]: For 100/114 co-relation queries the response was YES. [2022-07-19 21:25:01,028 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. [2022-07-19 21:25:01,030 INFO L132 encePairwiseOnDemand]: 355/379 looper letters, 57 selfloop transitions, 51 changer transitions 0/409 dead transitions. [2022-07-19 21:25:01,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 409 transitions, 1343 flow [2022-07-19 21:25:01,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:25:01,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:25:01,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5384 transitions. [2022-07-19 21:25:01,038 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.83563557349061 [2022-07-19 21:25:01,038 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5384 transitions. [2022-07-19 21:25:01,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5384 transitions. [2022-07-19 21:25:01,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:01,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5384 transitions. [2022-07-19 21:25:01,046 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) [2022-07-19 21:25:01,054 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) [2022-07-19 21:25:01,055 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) [2022-07-19 21:25:01,056 INFO L186 Difference]: Start difference. First operand has 367 places, 367 transitions, 959 flow. Second operand 17 states and 5384 transitions. [2022-07-19 21:25:01,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 409 transitions, 1343 flow [2022-07-19 21:25:01,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 409 transitions, 1343 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:25:01,062 INFO L242 Difference]: Finished difference. Result has 386 places, 388 transitions, 1222 flow [2022-07-19 21:25:01,063 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} [2022-07-19 21:25:01,063 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 43 predicate places. [2022-07-19 21:25:01,063 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 388 transitions, 1222 flow [2022-07-19 21:25:01,065 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) [2022-07-19 21:25:01,065 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:01,065 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] [2022-07-19 21:25:01,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 21:25:01,283 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 [2022-07-19 21:25:01,283 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)] === [2022-07-19 21:25:01,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:01,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1687705773, now seen corresponding path program 1 times [2022-07-19 21:25:01,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:01,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845571950] [2022-07-19 21:25:01,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:01,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-19 21:25:01,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:01,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845571950] [2022-07-19 21:25:01,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845571950] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:25:01,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734872446] [2022-07-19 21:25:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:01,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:25:01,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:25:01,357 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) [2022-07-19 21:25:01,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 21:25:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:01,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 21:25:01,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:25:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-19 21:25:01,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:25:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-19 21:25:01,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734872446] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:25:01,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:25:01,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-07-19 21:25:01,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026326414] [2022-07-19 21:25:01,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:25:01,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:25:01,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:01,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:25:01,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:01,748 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 379 [2022-07-19 21:25:01,750 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) [2022-07-19 21:25:01,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:01,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 379 [2022-07-19 21:25:01,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:02,201 INFO L129 PetriNetUnfolder]: 76/1973 cut-off events. [2022-07-19 21:25:02,201 INFO L130 PetriNetUnfolder]: For 166/342 co-relation queries the response was YES. [2022-07-19 21:25:02,214 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. [2022-07-19 21:25:02,220 INFO L132 encePairwiseOnDemand]: 371/379 looper letters, 59 selfloop transitions, 13 changer transitions 1/440 dead transitions. [2022-07-19 21:25:02,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 440 transitions, 1518 flow [2022-07-19 21:25:02,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:25:02,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:25:02,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4456 transitions. [2022-07-19 21:25:02,228 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9044043028211893 [2022-07-19 21:25:02,228 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4456 transitions. [2022-07-19 21:25:02,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4456 transitions. [2022-07-19 21:25:02,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:02,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4456 transitions. [2022-07-19 21:25:02,237 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) [2022-07-19 21:25:02,243 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) [2022-07-19 21:25:02,243 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) [2022-07-19 21:25:02,244 INFO L186 Difference]: Start difference. First operand has 386 places, 388 transitions, 1222 flow. Second operand 13 states and 4456 transitions. [2022-07-19 21:25:02,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 440 transitions, 1518 flow [2022-07-19 21:25:02,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 440 transitions, 1451 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-07-19 21:25:02,251 INFO L242 Difference]: Finished difference. Result has 393 places, 397 transitions, 1228 flow [2022-07-19 21:25:02,251 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} [2022-07-19 21:25:02,252 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 50 predicate places. [2022-07-19 21:25:02,252 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 397 transitions, 1228 flow [2022-07-19 21:25:02,253 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) [2022-07-19 21:25:02,253 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:02,253 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] [2022-07-19 21:25:02,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 21:25:02,471 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 [2022-07-19 21:25:02,471 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)] === [2022-07-19 21:25:02,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:02,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1258064535, now seen corresponding path program 2 times [2022-07-19 21:25:02,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:02,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866494765] [2022-07-19 21:25:02,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:02,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-19 21:25:02,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:02,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866494765] [2022-07-19 21:25:02,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866494765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:02,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:02,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:02,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339601104] [2022-07-19 21:25:02,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:02,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:02,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:02,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:02,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:02,668 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 379 [2022-07-19 21:25:02,670 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) [2022-07-19 21:25:02,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:02,670 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 379 [2022-07-19 21:25:02,670 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:03,063 INFO L129 PetriNetUnfolder]: 80/1532 cut-off events. [2022-07-19 21:25:03,064 INFO L130 PetriNetUnfolder]: For 267/367 co-relation queries the response was YES. [2022-07-19 21:25:03,075 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. [2022-07-19 21:25:03,079 INFO L132 encePairwiseOnDemand]: 369/379 looper letters, 67 selfloop transitions, 11 changer transitions 5/420 dead transitions. [2022-07-19 21:25:03,079 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 420 transitions, 1462 flow [2022-07-19 21:25:03,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:25:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:25:03,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2744 transitions. [2022-07-19 21:25:03,083 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8044561712107886 [2022-07-19 21:25:03,084 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2744 transitions. [2022-07-19 21:25:03,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2744 transitions. [2022-07-19 21:25:03,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:03,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2744 transitions. [2022-07-19 21:25:03,088 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) [2022-07-19 21:25:03,092 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) [2022-07-19 21:25:03,092 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) [2022-07-19 21:25:03,093 INFO L186 Difference]: Start difference. First operand has 393 places, 397 transitions, 1228 flow. Second operand 9 states and 2744 transitions. [2022-07-19 21:25:03,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 420 transitions, 1462 flow [2022-07-19 21:25:03,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 420 transitions, 1446 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:03,100 INFO L242 Difference]: Finished difference. Result has 404 places, 399 transitions, 1261 flow [2022-07-19 21:25:03,101 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} [2022-07-19 21:25:03,102 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 61 predicate places. [2022-07-19 21:25:03,102 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 399 transitions, 1261 flow [2022-07-19 21:25:03,102 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) [2022-07-19 21:25:03,102 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:03,103 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] [2022-07-19 21:25:03,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:25:03,103 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)] === [2022-07-19 21:25:03,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:03,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1824018327, now seen corresponding path program 2 times [2022-07-19 21:25:03,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:03,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494652453] [2022-07-19 21:25:03,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:03,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:03,216 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-19 21:25:03,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:03,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494652453] [2022-07-19 21:25:03,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494652453] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:25:03,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97611834] [2022-07-19 21:25:03,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:25:03,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:25:03,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:25:03,218 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) [2022-07-19 21:25:03,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 21:25:03,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-19 21:25:03,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:25:03,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 21:25:03,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:25:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-07-19 21:25:03,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:25:03,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97611834] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:03,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:25:03,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-07-19 21:25:03,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026416065] [2022-07-19 21:25:03,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:03,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:25:03,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:03,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:25:03,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-19 21:25:03,458 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 379 [2022-07-19 21:25:03,459 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) [2022-07-19 21:25:03,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:03,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 379 [2022-07-19 21:25:03,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:05,991 INFO L129 PetriNetUnfolder]: 2777/12326 cut-off events. [2022-07-19 21:25:05,991 INFO L130 PetriNetUnfolder]: For 1832/5129 co-relation queries the response was YES. [2022-07-19 21:25:06,148 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. [2022-07-19 21:25:06,183 INFO L132 encePairwiseOnDemand]: 368/379 looper letters, 88 selfloop transitions, 18 changer transitions 10/461 dead transitions. [2022-07-19 21:25:06,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 461 transitions, 1646 flow [2022-07-19 21:25:06,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:25:06,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:25:06,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3047 transitions. [2022-07-19 21:25:06,189 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.803957783641161 [2022-07-19 21:25:06,189 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3047 transitions. [2022-07-19 21:25:06,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3047 transitions. [2022-07-19 21:25:06,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:06,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3047 transitions. [2022-07-19 21:25:06,195 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) [2022-07-19 21:25:06,198 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) [2022-07-19 21:25:06,199 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) [2022-07-19 21:25:06,199 INFO L186 Difference]: Start difference. First operand has 404 places, 399 transitions, 1261 flow. Second operand 10 states and 3047 transitions. [2022-07-19 21:25:06,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 461 transitions, 1646 flow [2022-07-19 21:25:06,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 461 transitions, 1617 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-07-19 21:25:06,215 INFO L242 Difference]: Finished difference. Result has 412 places, 416 transitions, 1358 flow [2022-07-19 21:25:06,216 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} [2022-07-19 21:25:06,216 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 69 predicate places. [2022-07-19 21:25:06,217 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 416 transitions, 1358 flow [2022-07-19 21:25:06,217 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) [2022-07-19 21:25:06,217 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:06,218 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] [2022-07-19 21:25:06,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 21:25:06,435 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 [2022-07-19 21:25:06,436 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)] === [2022-07-19 21:25:06,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:06,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1446436149, now seen corresponding path program 3 times [2022-07-19 21:25:06,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:06,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337097463] [2022-07-19 21:25:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:06,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:06,599 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-19 21:25:06,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:06,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337097463] [2022-07-19 21:25:06,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337097463] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:25:06,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558674189] [2022-07-19 21:25:06,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 21:25:06,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:25:06,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:25:06,602 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) [2022-07-19 21:25:06,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 21:25:06,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-19 21:25:06,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:25:06,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 21:25:06,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:25:06,864 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-07-19 21:25:06,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:25:06,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558674189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:06,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:25:06,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-07-19 21:25:06,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606197792] [2022-07-19 21:25:06,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:06,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:25:06,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:06,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:25:06,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-19 21:25:06,869 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 379 [2022-07-19 21:25:06,870 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) [2022-07-19 21:25:06,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:06,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 379 [2022-07-19 21:25:06,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:09,916 INFO L129 PetriNetUnfolder]: 2756/12528 cut-off events. [2022-07-19 21:25:09,916 INFO L130 PetriNetUnfolder]: For 4386/8994 co-relation queries the response was YES. [2022-07-19 21:25:10,088 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. [2022-07-19 21:25:10,115 INFO L132 encePairwiseOnDemand]: 368/379 looper letters, 96 selfloop transitions, 26 changer transitions 10/477 dead transitions. [2022-07-19 21:25:10,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 477 transitions, 1838 flow [2022-07-19 21:25:10,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:25:10,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:25:10,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3046 transitions. [2022-07-19 21:25:10,120 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8036939313984169 [2022-07-19 21:25:10,120 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3046 transitions. [2022-07-19 21:25:10,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3046 transitions. [2022-07-19 21:25:10,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:10,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3046 transitions. [2022-07-19 21:25:10,125 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) [2022-07-19 21:25:10,128 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) [2022-07-19 21:25:10,129 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) [2022-07-19 21:25:10,129 INFO L186 Difference]: Start difference. First operand has 412 places, 416 transitions, 1358 flow. Second operand 10 states and 3046 transitions. [2022-07-19 21:25:10,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 477 transitions, 1838 flow [2022-07-19 21:25:10,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 477 transitions, 1828 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:10,150 INFO L242 Difference]: Finished difference. Result has 420 places, 433 transitions, 1519 flow [2022-07-19 21:25:10,151 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} [2022-07-19 21:25:10,151 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 77 predicate places. [2022-07-19 21:25:10,151 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 433 transitions, 1519 flow [2022-07-19 21:25:10,152 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) [2022-07-19 21:25:10,152 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:10,152 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] [2022-07-19 21:25:10,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 21:25:10,369 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 [2022-07-19 21:25:10,369 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)] === [2022-07-19 21:25:10,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:10,370 INFO L85 PathProgramCache]: Analyzing trace with hash -509345462, now seen corresponding path program 1 times [2022-07-19 21:25:10,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:10,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766581393] [2022-07-19 21:25:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:10,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:10,460 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-07-19 21:25:10,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:10,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766581393] [2022-07-19 21:25:10,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766581393] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:25:10,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742683544] [2022-07-19 21:25:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:10,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:25:10,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:25:10,463 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) [2022-07-19 21:25:10,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 21:25:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:10,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 21:25:10,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:25:10,781 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-19 21:25:10,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:25:10,917 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-19 21:25:10,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742683544] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:25:10,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:25:10,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 16 [2022-07-19 21:25:10,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079462412] [2022-07-19 21:25:10,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:25:10,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 21:25:10,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:10,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 21:25:10,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-07-19 21:25:10,922 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 379 [2022-07-19 21:25:10,925 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) [2022-07-19 21:25:10,925 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:10,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 379 [2022-07-19 21:25:10,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:32,712 INFO L129 PetriNetUnfolder]: 14932/83234 cut-off events. [2022-07-19 21:25:32,712 INFO L130 PetriNetUnfolder]: For 28373/28419 co-relation queries the response was YES. [2022-07-19 21:25:33,889 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. [2022-07-19 21:25:34,247 INFO L132 encePairwiseOnDemand]: 364/379 looper letters, 929 selfloop transitions, 328 changer transitions 24/1669 dead transitions. [2022-07-19 21:25:34,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 1669 transitions, 8441 flow [2022-07-19 21:25:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-07-19 21:25:34,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2022-07-19 21:25:34,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 53642 transitions. [2022-07-19 21:25:34,306 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8791032301414313 [2022-07-19 21:25:34,306 INFO L72 ComplementDD]: Start complementDD. Operand 161 states and 53642 transitions. [2022-07-19 21:25:34,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 161 states and 53642 transitions. [2022-07-19 21:25:34,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:34,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 161 states and 53642 transitions. [2022-07-19 21:25:34,387 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) [2022-07-19 21:25:34,438 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) [2022-07-19 21:25:34,454 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) [2022-07-19 21:25:34,454 INFO L186 Difference]: Start difference. First operand has 420 places, 433 transitions, 1519 flow. Second operand 161 states and 53642 transitions. [2022-07-19 21:25:34,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 1669 transitions, 8441 flow [2022-07-19 21:25:35,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 1669 transitions, 8405 flow, removed 18 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:35,074 INFO L242 Difference]: Finished difference. Result has 685 places, 768 transitions, 4523 flow [2022-07-19 21:25:35,075 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} [2022-07-19 21:25:35,076 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 342 predicate places. [2022-07-19 21:25:35,076 INFO L495 AbstractCegarLoop]: Abstraction has has 685 places, 768 transitions, 4523 flow [2022-07-19 21:25:35,077 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) [2022-07-19 21:25:35,077 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:35,078 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] [2022-07-19 21:25:35,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 21:25:35,295 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 [2022-07-19 21:25:35,295 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)] === [2022-07-19 21:25:35,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:35,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1365338642, now seen corresponding path program 1 times [2022-07-19 21:25:35,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:35,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128038173] [2022-07-19 21:25:35,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:35,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:35,417 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2022-07-19 21:25:35,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:35,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128038173] [2022-07-19 21:25:35,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128038173] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:25:35,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798451165] [2022-07-19 21:25:35,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:35,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:25:35,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:25:35,444 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) [2022-07-19 21:25:35,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 21:25:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:35,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 21:25:35,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:25:35,758 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2022-07-19 21:25:35,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:25:35,872 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2022-07-19 21:25:35,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798451165] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 21:25:35,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:25:35,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2022-07-19 21:25:35,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579794812] [2022-07-19 21:25:35,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:35,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:25:35,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:35,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:25:35,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:25:35,875 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 379 [2022-07-19 21:25:35,876 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) [2022-07-19 21:25:35,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:35,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 379 [2022-07-19 21:25:35,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand