./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 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/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-?-791161d [2022-07-22 21:39:14,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:39:14,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:39:14,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:39:14,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:39:14,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:39:14,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:39:14,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:39:14,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:39:14,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:39:14,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:39:14,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:39:14,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:39:14,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:39:14,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:39:14,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:39:14,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:39:14,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:39:14,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:39:14,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:39:14,215 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:39:14,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:39:14,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:39:14,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:39:14,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:39:14,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:39:14,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:39:14,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:39:14,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:39:14,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:39:14,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:39:14,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:39:14,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:39:14,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:39:14,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:39:14,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:39:14,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:39:14,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:39:14,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:39:14,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:39:14,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:39:14,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:39:14,236 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:39:14,261 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:39:14,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:39:14,262 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:39:14,262 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:39:14,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:39:14,263 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:39:14,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:39:14,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:39:14,263 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:39:14,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:39:14,264 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:39:14,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:39:14,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:39:14,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:39:14,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:39:14,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:39:14,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:39:14,267 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:39:14,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:39:14,267 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:39:14,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:39:14,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:39:14,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:39:14,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:39:14,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:39:14,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:39:14,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:39:14,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:39:14,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:39:14,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:39:14,269 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:39:14,269 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:39:14,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:39:14,269 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 [2022-07-22 21:39:14,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:39:14,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:39:14,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:39:14,444 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:39:14,444 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:39:14,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2022-07-22 21:39:14,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a71a0a6d/d8cfe81ae8404f829f8b8c5854117c94/FLAG0eec89b0c [2022-07-22 21:39:14,875 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:39:14,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2022-07-22 21:39:14,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a71a0a6d/d8cfe81ae8404f829f8b8c5854117c94/FLAG0eec89b0c [2022-07-22 21:39:14,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a71a0a6d/d8cfe81ae8404f829f8b8c5854117c94 [2022-07-22 21:39:14,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:39:14,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:39:14,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:39:14,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:39:14,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:39:14,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:39:14" (1/1) ... [2022-07-22 21:39:14,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40c676bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:39:14, skipping insertion in model container [2022-07-22 21:39:14,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:39:14" (1/1) ... [2022-07-22 21:39:14,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:39:14,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:39:15,098 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] [2022-07-22 21:39:15,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:39:15,113 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:39:15,132 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] [2022-07-22 21:39:15,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:39:15,146 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:39:15,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:39:15 WrapperNode [2022-07-22 21:39:15,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:39:15,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:39:15,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:39:15,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:39:15,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:39:15" (1/1) ... [2022-07-22 21:39:15,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:39:15" (1/1) ... [2022-07-22 21:39:15,183 INFO L137 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 287 [2022-07-22 21:39:15,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:39:15,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:39:15,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:39:15,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:39:15,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:39:15" (1/1) ... [2022-07-22 21:39:15,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:39:15" (1/1) ... [2022-07-22 21:39:15,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:39:15" (1/1) ... [2022-07-22 21:39:15,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:39:15" (1/1) ... [2022-07-22 21:39:15,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:39:15" (1/1) ... [2022-07-22 21:39:15,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:39:15" (1/1) ... [2022-07-22 21:39:15,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:39:15" (1/1) ... [2022-07-22 21:39:15,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:39:15,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:39:15,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:39:15,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:39:15,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:39:15" (1/1) ... [2022-07-22 21:39:15,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:39:15,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:39:15,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 21:39:15,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 21:39:15,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:39:15,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:39:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:39:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:39:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:39:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:39:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:39:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:39:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-22 21:39:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-22 21:39:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:39:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 21:39:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:39:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:39:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:39:15,324 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:39:15,434 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:39:15,435 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:39:15,796 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:39:15,806 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:39:15,807 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-22 21:39:15,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:39:15 BoogieIcfgContainer [2022-07-22 21:39:15,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:39:15,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:39:15,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:39:15,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:39:15,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:39:14" (1/3) ... [2022-07-22 21:39:15,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747160e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:39:15, skipping insertion in model container [2022-07-22 21:39:15,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:39:15" (2/3) ... [2022-07-22 21:39:15,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747160e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:39:15, skipping insertion in model container [2022-07-22 21:39:15,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:39:15" (3/3) ... [2022-07-22 21:39:15,822 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2022-07-22 21:39:15,826 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:39:15,832 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:39:15,833 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:39:15,833 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:39:15,960 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-22 21:39:16,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 357 places, 379 transitions, 782 flow [2022-07-22 21:39:16,167 INFO L129 PetriNetUnfolder]: 32/376 cut-off events. [2022-07-22 21:39:16,167 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:39:16,175 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. [2022-07-22 21:39:16,176 INFO L82 GeneralOperation]: Start removeDead. Operand has 357 places, 379 transitions, 782 flow [2022-07-22 21:39:16,186 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 343 places, 365 transitions, 748 flow [2022-07-22 21:39:16,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:39:16,209 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@46692c79, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1d58c571 [2022-07-22 21:39:16,210 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 21:39:16,275 INFO L129 PetriNetUnfolder]: 32/364 cut-off events. [2022-07-22 21:39:16,275 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:39:16,276 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:39:16,277 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] [2022-07-22 21:39:16,277 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)] === [2022-07-22 21:39:16,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:39:16,282 INFO L85 PathProgramCache]: Analyzing trace with hash -952802072, now seen corresponding path program 1 times [2022-07-22 21:39:16,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:39:16,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482277828] [2022-07-22 21:39:16,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:16,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:39:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:16,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:39:16,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:39:16,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482277828] [2022-07-22 21:39:16,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482277828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:39:16,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:39:16,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:39:16,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479667343] [2022-07-22 21:39:16,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:39:16,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:39:16,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:39:16,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:39:16,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:39:16,563 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 379 [2022-07-22 21:39:16,569 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) [2022-07-22 21:39:16,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:39:16,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 379 [2022-07-22 21:39:16,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:39:16,637 INFO L129 PetriNetUnfolder]: 9/342 cut-off events. [2022-07-22 21:39:16,637 INFO L130 PetriNetUnfolder]: For 12/14 co-relation queries the response was YES. [2022-07-22 21:39:16,641 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. [2022-07-22 21:39:16,642 INFO L132 encePairwiseOnDemand]: 356/379 looper letters, 6 selfloop transitions, 0 changer transitions 8/342 dead transitions. [2022-07-22 21:39:16,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 342 transitions, 714 flow [2022-07-22 21:39:16,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:39:16,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-22 21:39:16,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 727 transitions. [2022-07-22 21:39:16,660 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9591029023746702 [2022-07-22 21:39:16,661 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 727 transitions. [2022-07-22 21:39:16,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 727 transitions. [2022-07-22 21:39:16,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:39:16,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 727 transitions. [2022-07-22 21:39:16,672 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) [2022-07-22 21:39:16,680 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) [2022-07-22 21:39:16,681 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) [2022-07-22 21:39:16,683 INFO L186 Difference]: Start difference. First operand has 343 places, 365 transitions, 748 flow. Second operand 2 states and 727 transitions. [2022-07-22 21:39:16,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 342 transitions, 714 flow [2022-07-22 21:39:16,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 342 transitions, 702 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-22 21:39:16,698 INFO L242 Difference]: Finished difference. Result has 338 places, 334 transitions, 674 flow [2022-07-22 21:39:16,701 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} [2022-07-22 21:39:16,703 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, -5 predicate places. [2022-07-22 21:39:16,704 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 334 transitions, 674 flow [2022-07-22 21:39:16,705 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) [2022-07-22 21:39:16,705 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:39:16,705 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] [2022-07-22 21:39:16,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:39:16,706 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)] === [2022-07-22 21:39:16,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:39:16,706 INFO L85 PathProgramCache]: Analyzing trace with hash -936950910, now seen corresponding path program 1 times [2022-07-22 21:39:16,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:39:16,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623571324] [2022-07-22 21:39:16,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:16,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:39:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:16,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:39:16,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:39:16,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623571324] [2022-07-22 21:39:16,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623571324] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:39:16,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:39:16,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:39:16,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491187304] [2022-07-22 21:39:16,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:39:16,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:39:16,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:39:16,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:39:16,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:39:16,896 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 379 [2022-07-22 21:39:16,897 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) [2022-07-22 21:39:16,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:39:16,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 379 [2022-07-22 21:39:16,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:39:17,114 INFO L129 PetriNetUnfolder]: 54/867 cut-off events. [2022-07-22 21:39:17,114 INFO L130 PetriNetUnfolder]: For 25/31 co-relation queries the response was YES. [2022-07-22 21:39:17,124 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. [2022-07-22 21:39:17,127 INFO L132 encePairwiseOnDemand]: 374/379 looper letters, 31 selfloop transitions, 4 changer transitions 0/352 dead transitions. [2022-07-22 21:39:17,128 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 352 transitions, 790 flow [2022-07-22 21:39:17,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:39:17,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:39:17,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1726 transitions. [2022-07-22 21:39:17,136 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9108179419525066 [2022-07-22 21:39:17,136 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1726 transitions. [2022-07-22 21:39:17,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1726 transitions. [2022-07-22 21:39:17,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:39:17,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1726 transitions. [2022-07-22 21:39:17,140 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) [2022-07-22 21:39:17,143 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) [2022-07-22 21:39:17,144 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) [2022-07-22 21:39:17,144 INFO L186 Difference]: Start difference. First operand has 338 places, 334 transitions, 674 flow. Second operand 5 states and 1726 transitions. [2022-07-22 21:39:17,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 352 transitions, 790 flow [2022-07-22 21:39:17,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 352 transitions, 790 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:39:17,150 INFO L242 Difference]: Finished difference. Result has 337 places, 337 transitions, 703 flow [2022-07-22 21:39:17,150 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} [2022-07-22 21:39:17,151 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, -6 predicate places. [2022-07-22 21:39:17,151 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 337 transitions, 703 flow [2022-07-22 21:39:17,152 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) [2022-07-22 21:39:17,152 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:39:17,152 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] [2022-07-22 21:39:17,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:39:17,152 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)] === [2022-07-22 21:39:17,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:39:17,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1135624034, now seen corresponding path program 1 times [2022-07-22 21:39:17,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:39:17,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300494239] [2022-07-22 21:39:17,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:17,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:39:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:17,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:39:17,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:39:17,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300494239] [2022-07-22 21:39:17,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300494239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:39:17,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:39:17,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:39:17,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242509343] [2022-07-22 21:39:17,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:39:17,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:39:17,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:39:17,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:39:17,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:39:17,273 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 379 [2022-07-22 21:39:17,275 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) [2022-07-22 21:39:17,275 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:39:17,275 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 379 [2022-07-22 21:39:17,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:39:17,471 INFO L129 PetriNetUnfolder]: 83/1014 cut-off events. [2022-07-22 21:39:17,472 INFO L130 PetriNetUnfolder]: For 87/161 co-relation queries the response was YES. [2022-07-22 21:39:17,479 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. [2022-07-22 21:39:17,482 INFO L132 encePairwiseOnDemand]: 374/379 looper letters, 29 selfloop transitions, 4 changer transitions 0/353 dead transitions. [2022-07-22 21:39:17,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 353 transitions, 809 flow [2022-07-22 21:39:17,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:39:17,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:39:17,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1724 transitions. [2022-07-22 21:39:17,486 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9097625329815303 [2022-07-22 21:39:17,486 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1724 transitions. [2022-07-22 21:39:17,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1724 transitions. [2022-07-22 21:39:17,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:39:17,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1724 transitions. [2022-07-22 21:39:17,489 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) [2022-07-22 21:39:17,492 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) [2022-07-22 21:39:17,493 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) [2022-07-22 21:39:17,493 INFO L186 Difference]: Start difference. First operand has 337 places, 337 transitions, 703 flow. Second operand 5 states and 1724 transitions. [2022-07-22 21:39:17,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 353 transitions, 809 flow [2022-07-22 21:39:17,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 353 transitions, 809 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:39:17,499 INFO L242 Difference]: Finished difference. Result has 344 places, 340 transitions, 732 flow [2022-07-22 21:39:17,499 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} [2022-07-22 21:39:17,500 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 1 predicate places. [2022-07-22 21:39:17,500 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 340 transitions, 732 flow [2022-07-22 21:39:17,501 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) [2022-07-22 21:39:17,501 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:39:17,501 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] [2022-07-22 21:39:17,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:39:17,502 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)] === [2022-07-22 21:39:17,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:39:17,502 INFO L85 PathProgramCache]: Analyzing trace with hash -368116362, now seen corresponding path program 1 times [2022-07-22 21:39:17,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:39:17,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544549836] [2022-07-22 21:39:17,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:17,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:39:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:17,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:39:17,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:39:17,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544549836] [2022-07-22 21:39:17,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544549836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:39:17,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:39:17,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:39:17,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529390664] [2022-07-22 21:39:17,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:39:17,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:39:17,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:39:17,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:39:17,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:39:17,605 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 379 [2022-07-22 21:39:17,607 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) [2022-07-22 21:39:17,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:39:17,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 379 [2022-07-22 21:39:17,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:39:17,760 INFO L129 PetriNetUnfolder]: 7/568 cut-off events. [2022-07-22 21:39:17,760 INFO L130 PetriNetUnfolder]: For 17/27 co-relation queries the response was YES. [2022-07-22 21:39:17,765 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. [2022-07-22 21:39:17,768 INFO L132 encePairwiseOnDemand]: 364/379 looper letters, 42 selfloop transitions, 12 changer transitions 0/352 dead transitions. [2022-07-22 21:39:17,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 352 transitions, 864 flow [2022-07-22 21:39:17,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:39:17,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:39:17,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1622 transitions. [2022-07-22 21:39:17,772 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8559366754617415 [2022-07-22 21:39:17,772 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1622 transitions. [2022-07-22 21:39:17,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1622 transitions. [2022-07-22 21:39:17,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:39:17,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1622 transitions. [2022-07-22 21:39:17,778 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) [2022-07-22 21:39:17,781 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) [2022-07-22 21:39:17,782 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) [2022-07-22 21:39:17,783 INFO L186 Difference]: Start difference. First operand has 344 places, 340 transitions, 732 flow. Second operand 5 states and 1622 transitions. [2022-07-22 21:39:17,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 352 transitions, 864 flow [2022-07-22 21:39:17,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 352 transitions, 864 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:39:17,789 INFO L242 Difference]: Finished difference. Result has 349 places, 343 transitions, 780 flow [2022-07-22 21:39:17,790 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} [2022-07-22 21:39:17,791 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 6 predicate places. [2022-07-22 21:39:17,795 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 343 transitions, 780 flow [2022-07-22 21:39:17,796 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) [2022-07-22 21:39:17,796 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:39:17,797 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] [2022-07-22 21:39:17,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:39:17,797 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)] === [2022-07-22 21:39:17,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:39:17,798 INFO L85 PathProgramCache]: Analyzing trace with hash 690744834, now seen corresponding path program 1 times [2022-07-22 21:39:17,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:39:17,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159608556] [2022-07-22 21:39:17,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:17,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:39:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:39:17,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:39:17,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159608556] [2022-07-22 21:39:17,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159608556] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:39:17,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133805323] [2022-07-22 21:39:17,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:17,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:39:17,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:39:17,922 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:39:17,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 21:39:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:18,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 21:39:18,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:39:18,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:39:18,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:39:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:39:18,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133805323] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:39:18,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:39:18,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-07-22 21:39:18,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489990312] [2022-07-22 21:39:18,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:39:18,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 21:39:18,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:39:18,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 21:39:18,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-07-22 21:39:18,232 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 379 [2022-07-22 21:39:18,236 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) [2022-07-22 21:39:18,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:39:18,236 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 379 [2022-07-22 21:39:18,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:39:18,527 INFO L129 PetriNetUnfolder]: 7/595 cut-off events. [2022-07-22 21:39:18,527 INFO L130 PetriNetUnfolder]: For 29/39 co-relation queries the response was YES. [2022-07-22 21:39:18,532 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. [2022-07-22 21:39:18,534 INFO L132 encePairwiseOnDemand]: 355/379 looper letters, 45 selfloop transitions, 33 changer transitions 0/373 dead transitions. [2022-07-22 21:39:18,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 373 transitions, 1002 flow [2022-07-22 21:39:18,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:39:18,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:39:18,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3494 transitions. [2022-07-22 21:39:18,539 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8380906692252339 [2022-07-22 21:39:18,539 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3494 transitions. [2022-07-22 21:39:18,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3494 transitions. [2022-07-22 21:39:18,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:39:18,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3494 transitions. [2022-07-22 21:39:18,546 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) [2022-07-22 21:39:18,551 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) [2022-07-22 21:39:18,552 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) [2022-07-22 21:39:18,552 INFO L186 Difference]: Start difference. First operand has 349 places, 343 transitions, 780 flow. Second operand 11 states and 3494 transitions. [2022-07-22 21:39:18,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 373 transitions, 1002 flow [2022-07-22 21:39:18,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 373 transitions, 984 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-22 21:39:18,558 INFO L242 Difference]: Finished difference. Result has 359 places, 361 transitions, 929 flow [2022-07-22 21:39:18,558 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} [2022-07-22 21:39:18,559 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 16 predicate places. [2022-07-22 21:39:18,559 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 361 transitions, 929 flow [2022-07-22 21:39:18,561 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) [2022-07-22 21:39:18,561 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:39:18,561 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] [2022-07-22 21:39:18,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 21:39:18,782 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 [2022-07-22 21:39:18,782 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)] === [2022-07-22 21:39:18,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:39:18,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1161919554, now seen corresponding path program 2 times [2022-07-22 21:39:18,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:39:18,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494473892] [2022-07-22 21:39:18,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:18,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:39:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 21:39:18,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:39:18,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494473892] [2022-07-22 21:39:18,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494473892] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:39:18,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378132896] [2022-07-22 21:39:18,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 21:39:18,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:39:18,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:39:18,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:39:18,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 21:39:19,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 21:39:19,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:39:19,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 21:39:19,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:39:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-22 21:39:19,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:39:19,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378132896] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:39:19,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 21:39:19,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-07-22 21:39:19,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898136093] [2022-07-22 21:39:19,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:39:19,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:39:19,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:39:19,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:39:19,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-22 21:39:19,134 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 379 [2022-07-22 21:39:19,135 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) [2022-07-22 21:39:19,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:39:19,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 379 [2022-07-22 21:39:19,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:39:19,551 INFO L129 PetriNetUnfolder]: 42/1639 cut-off events. [2022-07-22 21:39:19,552 INFO L130 PetriNetUnfolder]: For 62/118 co-relation queries the response was YES. [2022-07-22 21:39:19,572 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. [2022-07-22 21:39:19,577 INFO L132 encePairwiseOnDemand]: 371/379 looper letters, 53 selfloop transitions, 5 changer transitions 4/377 dead transitions. [2022-07-22 21:39:19,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 377 transitions, 1092 flow [2022-07-22 21:39:19,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:39:19,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:39:19,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1869 transitions. [2022-07-22 21:39:19,581 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8218997361477572 [2022-07-22 21:39:19,583 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1869 transitions. [2022-07-22 21:39:19,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1869 transitions. [2022-07-22 21:39:19,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:39:19,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1869 transitions. [2022-07-22 21:39:19,587 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) [2022-07-22 21:39:19,590 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) [2022-07-22 21:39:19,591 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) [2022-07-22 21:39:19,591 INFO L186 Difference]: Start difference. First operand has 359 places, 361 transitions, 929 flow. Second operand 6 states and 1869 transitions. [2022-07-22 21:39:19,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 377 transitions, 1092 flow [2022-07-22 21:39:19,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 377 transitions, 1067 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-07-22 21:39:19,604 INFO L242 Difference]: Finished difference. Result has 365 places, 365 transitions, 943 flow [2022-07-22 21:39:19,605 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} [2022-07-22 21:39:19,607 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 22 predicate places. [2022-07-22 21:39:19,607 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 365 transitions, 943 flow [2022-07-22 21:39:19,619 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) [2022-07-22 21:39:19,619 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:39:19,619 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] [2022-07-22 21:39:19,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 21:39:19,827 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 [2022-07-22 21:39:19,828 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)] === [2022-07-22 21:39:19,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:39:19,828 INFO L85 PathProgramCache]: Analyzing trace with hash -886045462, now seen corresponding path program 1 times [2022-07-22 21:39:19,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:39:19,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184509708] [2022-07-22 21:39:19,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:19,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:39:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-22 21:39:19,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:39:19,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184509708] [2022-07-22 21:39:19,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184509708] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:39:19,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:39:19,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:39:19,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153008937] [2022-07-22 21:39:19,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:39:19,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:39:19,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:39:19,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:39:19,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:39:19,895 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 379 [2022-07-22 21:39:19,896 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) [2022-07-22 21:39:19,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:39:19,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 379 [2022-07-22 21:39:19,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:39:20,273 INFO L129 PetriNetUnfolder]: 52/1866 cut-off events. [2022-07-22 21:39:20,273 INFO L130 PetriNetUnfolder]: For 75/183 co-relation queries the response was YES. [2022-07-22 21:39:20,291 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. [2022-07-22 21:39:20,296 INFO L132 encePairwiseOnDemand]: 374/379 looper letters, 32 selfloop transitions, 4 changer transitions 1/384 dead transitions. [2022-07-22 21:39:20,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 384 transitions, 1064 flow [2022-07-22 21:39:20,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:39:20,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:39:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1728 transitions. [2022-07-22 21:39:20,300 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9118733509234829 [2022-07-22 21:39:20,300 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1728 transitions. [2022-07-22 21:39:20,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1728 transitions. [2022-07-22 21:39:20,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:39:20,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1728 transitions. [2022-07-22 21:39:20,304 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) [2022-07-22 21:39:20,306 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) [2022-07-22 21:39:20,306 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) [2022-07-22 21:39:20,306 INFO L186 Difference]: Start difference. First operand has 365 places, 365 transitions, 943 flow. Second operand 5 states and 1728 transitions. [2022-07-22 21:39:20,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 384 transitions, 1064 flow [2022-07-22 21:39:20,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 384 transitions, 1056 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-07-22 21:39:20,313 INFO L242 Difference]: Finished difference. Result has 367 places, 367 transitions, 959 flow [2022-07-22 21:39:20,313 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} [2022-07-22 21:39:20,314 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 24 predicate places. [2022-07-22 21:39:20,314 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 367 transitions, 959 flow [2022-07-22 21:39:20,315 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) [2022-07-22 21:39:20,315 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:39:20,315 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] [2022-07-22 21:39:20,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:39:20,315 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)] === [2022-07-22 21:39:20,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:39:20,316 INFO L85 PathProgramCache]: Analyzing trace with hash -447190807, now seen corresponding path program 1 times [2022-07-22 21:39:20,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:39:20,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719153026] [2022-07-22 21:39:20,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:20,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:39:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-22 21:39:20,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:39:20,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719153026] [2022-07-22 21:39:20,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719153026] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:39:20,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507221306] [2022-07-22 21:39:20,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:20,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:39:20,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:39:20,415 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:39:20,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 21:39:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:20,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 21:39:20,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:39:20,731 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-22 21:39:20,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:39:20,813 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-22 21:39:20,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507221306] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:39:20,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:39:20,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-07-22 21:39:20,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907753809] [2022-07-22 21:39:20,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:39:20,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 21:39:20,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:39:20,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 21:39:20,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-07-22 21:39:20,819 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 379 [2022-07-22 21:39:20,825 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) [2022-07-22 21:39:20,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:39:20,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 379 [2022-07-22 21:39:20,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:39:21,401 INFO L129 PetriNetUnfolder]: 6/868 cut-off events. [2022-07-22 21:39:21,401 INFO L130 PetriNetUnfolder]: For 100/114 co-relation queries the response was YES. [2022-07-22 21:39:21,408 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. [2022-07-22 21:39:21,411 INFO L132 encePairwiseOnDemand]: 355/379 looper letters, 57 selfloop transitions, 51 changer transitions 0/409 dead transitions. [2022-07-22 21:39:21,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 409 transitions, 1343 flow [2022-07-22 21:39:21,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 21:39:21,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-22 21:39:21,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5384 transitions. [2022-07-22 21:39:21,423 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.83563557349061 [2022-07-22 21:39:21,423 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5384 transitions. [2022-07-22 21:39:21,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5384 transitions. [2022-07-22 21:39:21,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:39:21,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5384 transitions. [2022-07-22 21:39:21,433 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) [2022-07-22 21:39:21,442 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) [2022-07-22 21:39:21,443 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) [2022-07-22 21:39:21,444 INFO L186 Difference]: Start difference. First operand has 367 places, 367 transitions, 959 flow. Second operand 17 states and 5384 transitions. [2022-07-22 21:39:21,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 409 transitions, 1343 flow [2022-07-22 21:39:21,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 409 transitions, 1343 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:39:21,452 INFO L242 Difference]: Finished difference. Result has 386 places, 388 transitions, 1222 flow [2022-07-22 21:39:21,452 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} [2022-07-22 21:39:21,455 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 43 predicate places. [2022-07-22 21:39:21,455 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 388 transitions, 1222 flow [2022-07-22 21:39:21,457 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) [2022-07-22 21:39:21,457 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:39:21,457 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] [2022-07-22 21:39:21,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 21:39:21,675 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 [2022-07-22 21:39:21,676 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)] === [2022-07-22 21:39:21,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:39:21,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1687705773, now seen corresponding path program 1 times [2022-07-22 21:39:21,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:39:21,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564325664] [2022-07-22 21:39:21,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:21,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:39:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:21,780 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:39:21,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:39:21,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564325664] [2022-07-22 21:39:21,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564325664] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:39:21,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489543529] [2022-07-22 21:39:21,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:21,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:39:21,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:39:21,782 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:39:21,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 21:39:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:21,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 21:39:21,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:39:22,014 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:39:22,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:39:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:39:22,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489543529] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:39:22,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:39:22,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-07-22 21:39:22,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872717237] [2022-07-22 21:39:22,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:39:22,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:39:22,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:39:22,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:39:22,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:39:22,103 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 379 [2022-07-22 21:39:22,105 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) [2022-07-22 21:39:22,105 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:39:22,105 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 379 [2022-07-22 21:39:22,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:39:22,626 INFO L129 PetriNetUnfolder]: 76/1973 cut-off events. [2022-07-22 21:39:22,627 INFO L130 PetriNetUnfolder]: For 166/342 co-relation queries the response was YES. [2022-07-22 21:39:22,639 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. [2022-07-22 21:39:22,644 INFO L132 encePairwiseOnDemand]: 371/379 looper letters, 59 selfloop transitions, 13 changer transitions 1/440 dead transitions. [2022-07-22 21:39:22,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 440 transitions, 1518 flow [2022-07-22 21:39:22,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:39:22,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:39:22,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4456 transitions. [2022-07-22 21:39:22,654 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9044043028211893 [2022-07-22 21:39:22,654 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4456 transitions. [2022-07-22 21:39:22,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4456 transitions. [2022-07-22 21:39:22,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:39:22,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4456 transitions. [2022-07-22 21:39:22,661 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) [2022-07-22 21:39:22,667 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) [2022-07-22 21:39:22,668 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) [2022-07-22 21:39:22,669 INFO L186 Difference]: Start difference. First operand has 386 places, 388 transitions, 1222 flow. Second operand 13 states and 4456 transitions. [2022-07-22 21:39:22,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 440 transitions, 1518 flow [2022-07-22 21:39:22,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 440 transitions, 1451 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-07-22 21:39:22,677 INFO L242 Difference]: Finished difference. Result has 393 places, 397 transitions, 1228 flow [2022-07-22 21:39:22,678 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} [2022-07-22 21:39:22,679 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 50 predicate places. [2022-07-22 21:39:22,679 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 397 transitions, 1228 flow [2022-07-22 21:39:22,680 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) [2022-07-22 21:39:22,680 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:39:22,681 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] [2022-07-22 21:39:22,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 21:39:22,901 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 [2022-07-22 21:39:22,902 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)] === [2022-07-22 21:39:22,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:39:22,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1258064535, now seen corresponding path program 2 times [2022-07-22 21:39:22,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:39:22,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627832183] [2022-07-22 21:39:22,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:22,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:39:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:39:23,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:39:23,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627832183] [2022-07-22 21:39:23,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627832183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:39:23,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:39:23,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:39:23,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828321837] [2022-07-22 21:39:23,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:39:23,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:39:23,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:39:23,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:39:23,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:39:23,134 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 379 [2022-07-22 21:39:23,135 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) [2022-07-22 21:39:23,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:39:23,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 379 [2022-07-22 21:39:23,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:39:23,621 INFO L129 PetriNetUnfolder]: 80/1532 cut-off events. [2022-07-22 21:39:23,621 INFO L130 PetriNetUnfolder]: For 267/367 co-relation queries the response was YES. [2022-07-22 21:39:23,636 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. [2022-07-22 21:39:23,640 INFO L132 encePairwiseOnDemand]: 369/379 looper letters, 67 selfloop transitions, 11 changer transitions 5/420 dead transitions. [2022-07-22 21:39:23,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 420 transitions, 1462 flow [2022-07-22 21:39:23,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:39:23,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:39:23,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2744 transitions. [2022-07-22 21:39:23,645 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8044561712107886 [2022-07-22 21:39:23,645 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2744 transitions. [2022-07-22 21:39:23,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2744 transitions. [2022-07-22 21:39:23,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:39:23,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2744 transitions. [2022-07-22 21:39:23,649 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) [2022-07-22 21:39:23,653 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) [2022-07-22 21:39:23,654 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) [2022-07-22 21:39:23,654 INFO L186 Difference]: Start difference. First operand has 393 places, 397 transitions, 1228 flow. Second operand 9 states and 2744 transitions. [2022-07-22 21:39:23,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 420 transitions, 1462 flow [2022-07-22 21:39:23,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 420 transitions, 1446 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-07-22 21:39:23,661 INFO L242 Difference]: Finished difference. Result has 404 places, 399 transitions, 1261 flow [2022-07-22 21:39:23,662 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} [2022-07-22 21:39:23,662 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 61 predicate places. [2022-07-22 21:39:23,662 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 399 transitions, 1261 flow [2022-07-22 21:39:23,663 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) [2022-07-22 21:39:23,663 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:39:23,663 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] [2022-07-22 21:39:23,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:39:23,663 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)] === [2022-07-22 21:39:23,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:39:23,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1824018327, now seen corresponding path program 2 times [2022-07-22 21:39:23,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:39:23,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570666291] [2022-07-22 21:39:23,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:23,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:39:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:23,784 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:39:23,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:39:23,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570666291] [2022-07-22 21:39:23,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570666291] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:39:23,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85218736] [2022-07-22 21:39:23,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 21:39:23,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:39:23,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:39:23,800 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:39:23,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 21:39:23,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 21:39:23,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:39:23,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-22 21:39:23,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:39:24,072 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-07-22 21:39:24,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:39:24,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85218736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:39:24,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 21:39:24,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-07-22 21:39:24,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043925656] [2022-07-22 21:39:24,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:39:24,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:39:24,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:39:24,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:39:24,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-22 21:39:24,076 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 379 [2022-07-22 21:39:24,078 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) [2022-07-22 21:39:24,078 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:39:24,078 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 379 [2022-07-22 21:39:24,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:39:26,973 INFO L129 PetriNetUnfolder]: 2777/12326 cut-off events. [2022-07-22 21:39:26,973 INFO L130 PetriNetUnfolder]: For 1832/5129 co-relation queries the response was YES. [2022-07-22 21:39:27,140 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. [2022-07-22 21:39:27,173 INFO L132 encePairwiseOnDemand]: 368/379 looper letters, 88 selfloop transitions, 18 changer transitions 10/461 dead transitions. [2022-07-22 21:39:27,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 461 transitions, 1646 flow [2022-07-22 21:39:27,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:39:27,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:39:27,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3047 transitions. [2022-07-22 21:39:27,178 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.803957783641161 [2022-07-22 21:39:27,178 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3047 transitions. [2022-07-22 21:39:27,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3047 transitions. [2022-07-22 21:39:27,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:39:27,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3047 transitions. [2022-07-22 21:39:27,184 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) [2022-07-22 21:39:27,189 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) [2022-07-22 21:39:27,189 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) [2022-07-22 21:39:27,190 INFO L186 Difference]: Start difference. First operand has 404 places, 399 transitions, 1261 flow. Second operand 10 states and 3047 transitions. [2022-07-22 21:39:27,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 461 transitions, 1646 flow [2022-07-22 21:39:27,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 461 transitions, 1617 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-07-22 21:39:27,206 INFO L242 Difference]: Finished difference. Result has 412 places, 416 transitions, 1358 flow [2022-07-22 21:39:27,207 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} [2022-07-22 21:39:27,207 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 69 predicate places. [2022-07-22 21:39:27,207 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 416 transitions, 1358 flow [2022-07-22 21:39:27,208 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) [2022-07-22 21:39:27,208 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:39:27,208 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] [2022-07-22 21:39:27,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-22 21:39:27,426 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 [2022-07-22 21:39:27,427 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)] === [2022-07-22 21:39:27,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:39:27,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1446436149, now seen corresponding path program 3 times [2022-07-22 21:39:27,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:39:27,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147885960] [2022-07-22 21:39:27,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:27,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:39:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:27,567 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-22 21:39:27,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:39:27,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147885960] [2022-07-22 21:39:27,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147885960] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:39:27,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889144609] [2022-07-22 21:39:27,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 21:39:27,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:39:27,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:39:27,570 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) [2022-07-22 21:39:27,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 21:39:27,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-22 21:39:27,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:39:27,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-22 21:39:27,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:39:27,846 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-07-22 21:39:27,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:39:27,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889144609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:39:27,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 21:39:27,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-07-22 21:39:27,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104841011] [2022-07-22 21:39:27,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:39:27,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:39:27,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:39:27,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:39:27,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-22 21:39:27,850 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 379 [2022-07-22 21:39:27,851 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) [2022-07-22 21:39:27,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:39:27,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 379 [2022-07-22 21:39:27,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:39:30,924 INFO L129 PetriNetUnfolder]: 2756/12528 cut-off events. [2022-07-22 21:39:30,925 INFO L130 PetriNetUnfolder]: For 4386/8994 co-relation queries the response was YES. [2022-07-22 21:39:31,076 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. [2022-07-22 21:39:31,123 INFO L132 encePairwiseOnDemand]: 368/379 looper letters, 96 selfloop transitions, 26 changer transitions 10/477 dead transitions. [2022-07-22 21:39:31,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 477 transitions, 1838 flow [2022-07-22 21:39:31,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:39:31,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:39:31,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3046 transitions. [2022-07-22 21:39:31,128 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8036939313984169 [2022-07-22 21:39:31,128 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3046 transitions. [2022-07-22 21:39:31,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3046 transitions. [2022-07-22 21:39:31,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:39:31,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3046 transitions. [2022-07-22 21:39:31,134 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) [2022-07-22 21:39:31,139 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) [2022-07-22 21:39:31,140 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) [2022-07-22 21:39:31,140 INFO L186 Difference]: Start difference. First operand has 412 places, 416 transitions, 1358 flow. Second operand 10 states and 3046 transitions. [2022-07-22 21:39:31,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 477 transitions, 1838 flow [2022-07-22 21:39:31,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 477 transitions, 1828 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-07-22 21:39:31,170 INFO L242 Difference]: Finished difference. Result has 420 places, 433 transitions, 1519 flow [2022-07-22 21:39:31,171 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} [2022-07-22 21:39:31,171 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 77 predicate places. [2022-07-22 21:39:31,172 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 433 transitions, 1519 flow [2022-07-22 21:39:31,172 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) [2022-07-22 21:39:31,172 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:39:31,173 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] [2022-07-22 21:39:31,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-22 21:39:31,387 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 [2022-07-22 21:39:31,388 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)] === [2022-07-22 21:39:31,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:39:31,388 INFO L85 PathProgramCache]: Analyzing trace with hash -509345462, now seen corresponding path program 1 times [2022-07-22 21:39:31,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:39:31,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678737796] [2022-07-22 21:39:31,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:31,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:39:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:31,491 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-07-22 21:39:31,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:39:31,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678737796] [2022-07-22 21:39:31,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678737796] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:39:31,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686471703] [2022-07-22 21:39:31,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:31,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:39:31,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:39:31,493 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) [2022-07-22 21:39:31,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 21:39:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:31,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 21:39:31,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:39:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-22 21:39:31,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:39:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-22 21:39:31,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686471703] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:39:31,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:39:31,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 16 [2022-07-22 21:39:31,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132109904] [2022-07-22 21:39:31,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:39:31,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 21:39:31,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:39:31,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 21:39:31,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-07-22 21:39:31,970 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 379 [2022-07-22 21:39:31,974 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) [2022-07-22 21:39:31,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:39:31,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 379 [2022-07-22 21:39:31,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:39:54,950 INFO L129 PetriNetUnfolder]: 14932/83234 cut-off events. [2022-07-22 21:39:54,950 INFO L130 PetriNetUnfolder]: For 28373/28419 co-relation queries the response was YES. [2022-07-22 21:39:56,257 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. [2022-07-22 21:39:56,525 INFO L132 encePairwiseOnDemand]: 364/379 looper letters, 929 selfloop transitions, 328 changer transitions 24/1669 dead transitions. [2022-07-22 21:39:56,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 1669 transitions, 8441 flow [2022-07-22 21:39:56,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-07-22 21:39:56,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2022-07-22 21:39:56,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 53642 transitions. [2022-07-22 21:39:56,559 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8791032301414313 [2022-07-22 21:39:56,560 INFO L72 ComplementDD]: Start complementDD. Operand 161 states and 53642 transitions. [2022-07-22 21:39:56,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 161 states and 53642 transitions. [2022-07-22 21:39:56,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:39:56,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 161 states and 53642 transitions. [2022-07-22 21:39:56,633 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) [2022-07-22 21:39:56,694 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) [2022-07-22 21:39:56,715 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) [2022-07-22 21:39:56,715 INFO L186 Difference]: Start difference. First operand has 420 places, 433 transitions, 1519 flow. Second operand 161 states and 53642 transitions. [2022-07-22 21:39:56,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 1669 transitions, 8441 flow [2022-07-22 21:39:57,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 1669 transitions, 8405 flow, removed 18 selfloop flow, removed 2 redundant places. [2022-07-22 21:39:57,507 INFO L242 Difference]: Finished difference. Result has 685 places, 768 transitions, 4523 flow [2022-07-22 21:39:57,508 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} [2022-07-22 21:39:57,508 INFO L279 CegarLoopForPetriNet]: 343 programPoint places, 342 predicate places. [2022-07-22 21:39:57,508 INFO L495 AbstractCegarLoop]: Abstraction has has 685 places, 768 transitions, 4523 flow [2022-07-22 21:39:57,509 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) [2022-07-22 21:39:57,509 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:39:57,510 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] [2022-07-22 21:39:57,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 21:39:57,716 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 [2022-07-22 21:39:57,717 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)] === [2022-07-22 21:39:57,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:39:57,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1365338642, now seen corresponding path program 1 times [2022-07-22 21:39:57,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:39:57,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220025465] [2022-07-22 21:39:57,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:57,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:39:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:57,829 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2022-07-22 21:39:57,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:39:57,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220025465] [2022-07-22 21:39:57,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220025465] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:39:57,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742898581] [2022-07-22 21:39:57,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:39:57,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:39:57,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:39:57,831 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) [2022-07-22 21:39:57,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 21:39:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:39:58,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 21:39:58,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:39:58,147 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2022-07-22 21:39:58,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:39:58,264 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2022-07-22 21:39:58,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742898581] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 21:39:58,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 21:39:58,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2022-07-22 21:39:58,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809203438] [2022-07-22 21:39:58,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:39:58,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:39:58,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:39:58,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:39:58,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:39:58,267 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 379 [2022-07-22 21:39:58,268 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) [2022-07-22 21:39:58,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:39:58,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 379 [2022-07-22 21:39:58,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand