./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-parray-copy.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 a1f81f307bb0fd2f7d30845e458dba6e8acf9b3ee1da86e74967e4c3005bce62 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:07:26,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:07:26,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:07:26,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:07:26,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:07:26,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:07:26,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:07:26,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:07:26,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:07:26,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:07:26,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:07:26,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:07:26,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:07:26,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:07:26,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:07:26,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:07:26,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:07:26,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:07:26,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:07:26,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:07:26,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:07:26,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:07:26,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:07:26,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:07:26,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:07:26,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:07:26,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:07:26,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:07:26,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:07:26,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:07:26,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:07:26,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:07:26,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:07:26,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:07:26,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:07:26,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:07:26,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:07:26,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:07:26,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:07:26,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:07:26,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:07:26,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 03:07:26,369 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:07:26,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:07:26,370 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:07:26,370 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:07:26,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:07:26,371 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:07:26,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:07:26,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:07:26,372 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:07:26,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:07:26,373 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 03:07:26,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:07:26,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 03:07:26,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:07:26,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:07:26,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:07:26,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:07:26,375 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 03:07:26,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:07:26,375 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:07:26,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:07:26,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:07:26,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:07:26,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:07:26,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:07:26,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:07:26,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:07:26,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:07:26,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:07:26,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:07:26,377 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:07:26,377 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:07:26,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:07:26,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:07:26,378 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1f81f307bb0fd2f7d30845e458dba6e8acf9b3ee1da86e74967e4c3005bce62 [2021-12-16 03:07:26,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:07:26,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:07:26,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:07:26,649 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:07:26,650 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:07:26,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c [2021-12-16 03:07:26,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/734cc8cac/9338e2bd1ebe46d782495738717f43fa/FLAGd7f74b7ab [2021-12-16 03:07:27,107 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:07:27,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c [2021-12-16 03:07:27,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/734cc8cac/9338e2bd1ebe46d782495738717f43fa/FLAGd7f74b7ab [2021-12-16 03:07:27,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/734cc8cac/9338e2bd1ebe46d782495738717f43fa [2021-12-16 03:07:27,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:07:27,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:07:27,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:07:27,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:07:27,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:07:27,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:07:27" (1/1) ... [2021-12-16 03:07:27,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ac573c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:07:27, skipping insertion in model container [2021-12-16 03:07:27,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:07:27" (1/1) ... [2021-12-16 03:07:27,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:07:27,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:07:27,329 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c[2385,2398] [2021-12-16 03:07:27,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:07:27,348 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:07:27,389 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c[2385,2398] [2021-12-16 03:07:27,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:07:27,406 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:07:27,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:07:27 WrapperNode [2021-12-16 03:07:27,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:07:27,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:07:27,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:07:27,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:07:27,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:07:27" (1/1) ... [2021-12-16 03:07:27,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:07:27" (1/1) ... [2021-12-16 03:07:27,461 INFO L137 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 139 [2021-12-16 03:07:27,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:07:27,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:07:27,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:07:27,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:07:27,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:07:27" (1/1) ... [2021-12-16 03:07:27,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:07:27" (1/1) ... [2021-12-16 03:07:27,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:07:27" (1/1) ... [2021-12-16 03:07:27,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:07:27" (1/1) ... [2021-12-16 03:07:27,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:07:27" (1/1) ... [2021-12-16 03:07:27,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:07:27" (1/1) ... [2021-12-16 03:07:27,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:07:27" (1/1) ... [2021-12-16 03:07:27,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:07:27,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:07:27,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:07:27,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:07:27,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:07:27" (1/1) ... [2021-12-16 03:07:27,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:07:27,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:07:27,540 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) [2021-12-16 03:07:27,564 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 [2021-12-16 03:07:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:07:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-16 03:07:27,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-16 03:07:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-16 03:07:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-16 03:07:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-16 03:07:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-16 03:07:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:07:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:07:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:07:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:07:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:07:27,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:07:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:07:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:07:27,582 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-16 03:07:27,672 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:07:27,673 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:07:27,991 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:07:27,999 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:07:27,999 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-16 03:07:28,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:07:28 BoogieIcfgContainer [2021-12-16 03:07:28,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:07:28,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:07:28,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:07:28,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:07:28,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:07:27" (1/3) ... [2021-12-16 03:07:28,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4026b201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:07:28, skipping insertion in model container [2021-12-16 03:07:28,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:07:27" (2/3) ... [2021-12-16 03:07:28,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4026b201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:07:28, skipping insertion in model container [2021-12-16 03:07:28,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:07:28" (3/3) ... [2021-12-16 03:07:28,021 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-parray-copy.wvr.c [2021-12-16 03:07:28,025 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-16 03:07:28,026 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:07:28,026 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:07:28,026 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-16 03:07:28,076 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,077 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,077 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,077 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,077 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,078 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,078 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,078 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,078 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,078 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,079 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,079 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,079 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,079 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,080 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,080 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,080 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,080 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,081 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,081 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,082 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,082 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,082 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,083 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,083 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,083 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,083 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,084 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,085 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,085 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,088 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,088 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,088 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,088 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,089 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,089 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,089 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,089 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,090 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,090 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,091 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,091 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,091 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,091 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,092 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,092 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,092 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,093 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,093 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,093 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,093 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,093 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,094 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,094 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,094 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,094 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,094 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,095 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,095 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,096 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,097 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,097 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,097 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,097 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,098 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,098 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,098 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,098 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,099 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,099 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,099 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,099 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,099 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,099 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,100 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,100 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,100 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,100 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,101 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,101 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,103 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,104 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,104 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,104 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,104 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,104 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,104 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,105 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,105 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,105 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,107 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,107 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,107 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,107 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,107 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,110 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,110 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,110 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,110 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,110 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,111 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,111 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,111 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,111 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,112 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:07:28,114 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-16 03:07:28,175 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:07:28,184 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 03:07:28,184 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-16 03:07:28,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 205 places, 212 transitions, 448 flow [2021-12-16 03:07:28,306 INFO L129 PetriNetUnfolder]: 17/209 cut-off events. [2021-12-16 03:07:28,307 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-16 03:07:28,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 209 events. 17/209 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 125 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2021-12-16 03:07:28,311 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 212 transitions, 448 flow [2021-12-16 03:07:28,321 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 198 transitions, 414 flow [2021-12-16 03:07:28,370 INFO L129 PetriNetUnfolder]: 17/197 cut-off events. [2021-12-16 03:07:28,371 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-16 03:07:28,371 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:07:28,372 INFO L254 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] [2021-12-16 03:07:28,372 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:07:28,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:07:28,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1230389299, now seen corresponding path program 1 times [2021-12-16 03:07:28,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:07:28,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460182284] [2021-12-16 03:07:28,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:07:28,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:07:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:07:28,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:07:28,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:07:28,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460182284] [2021-12-16 03:07:28,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460182284] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:07:28,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:07:28,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 03:07:28,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603817067] [2021-12-16 03:07:28,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:07:28,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 03:07:28,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:07:28,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 03:07:28,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 03:07:28,681 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 212 [2021-12-16 03:07:28,685 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 198 transitions, 414 flow. Second operand has 2 states, 2 states have (on average 197.0) internal successors, (394), 2 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:28,685 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:07:28,685 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 212 [2021-12-16 03:07:28,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:07:28,735 INFO L129 PetriNetUnfolder]: 5/186 cut-off events. [2021-12-16 03:07:28,735 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-12-16 03:07:28,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 186 events. 5/186 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 18/192 useless extension candidates. Maximal degree in co-relation 147. Up to 7 conditions per place. [2021-12-16 03:07:28,739 INFO L132 encePairwiseOnDemand]: 200/212 looper letters, 6 selfloop transitions, 0 changer transitions 7/186 dead transitions. [2021-12-16 03:07:28,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 186 transitions, 402 flow [2021-12-16 03:07:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 03:07:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-16 03:07:28,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 404 transitions. [2021-12-16 03:07:28,753 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9528301886792453 [2021-12-16 03:07:28,753 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 404 transitions. [2021-12-16 03:07:28,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 404 transitions. [2021-12-16 03:07:28,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:07:28,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 404 transitions. [2021-12-16 03:07:28,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 202.0) internal successors, (404), 2 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:28,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:28,775 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:28,776 INFO L186 Difference]: Start difference. First operand has 191 places, 198 transitions, 414 flow. Second operand 2 states and 404 transitions. [2021-12-16 03:07:28,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 186 transitions, 402 flow [2021-12-16 03:07:28,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 186 transitions, 390 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-16 03:07:28,786 INFO L242 Difference]: Finished difference. Result has 186 places, 179 transitions, 364 flow [2021-12-16 03:07:28,788 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=364, PETRI_PLACES=186, PETRI_TRANSITIONS=179} [2021-12-16 03:07:28,792 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, -5 predicate places. [2021-12-16 03:07:28,792 INFO L470 AbstractCegarLoop]: Abstraction has has 186 places, 179 transitions, 364 flow [2021-12-16 03:07:28,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 197.0) internal successors, (394), 2 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:28,793 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:07:28,793 INFO L254 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] [2021-12-16 03:07:28,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:07:28,794 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:07:28,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:07:28,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1340485429, now seen corresponding path program 1 times [2021-12-16 03:07:28,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:07:28,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36203850] [2021-12-16 03:07:28,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:07:28,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:07:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:07:29,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:07:29,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:07:29,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36203850] [2021-12-16 03:07:29,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36203850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:07:29,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:07:29,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 03:07:29,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839093722] [2021-12-16 03:07:29,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:07:29,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:07:29,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:07:29,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:07:29,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:07:29,156 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 212 [2021-12-16 03:07:29,157 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 179 transitions, 364 flow. Second operand has 8 states, 8 states have (on average 138.25) internal successors, (1106), 8 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:29,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:07:29,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 212 [2021-12-16 03:07:29,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:07:29,558 INFO L129 PetriNetUnfolder]: 27/324 cut-off events. [2021-12-16 03:07:29,559 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-12-16 03:07:29,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 324 events. 27/324 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 599 event pairs, 12 based on Foata normal form. 2/301 useless extension candidates. Maximal degree in co-relation 462. Up to 87 conditions per place. [2021-12-16 03:07:29,563 INFO L132 encePairwiseOnDemand]: 197/212 looper letters, 58 selfloop transitions, 10 changer transitions 31/218 dead transitions. [2021-12-16 03:07:29,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 218 transitions, 640 flow [2021-12-16 03:07:29,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 03:07:29,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-16 03:07:29,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1817 transitions. [2021-12-16 03:07:29,571 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.659288824383164 [2021-12-16 03:07:29,571 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1817 transitions. [2021-12-16 03:07:29,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1817 transitions. [2021-12-16 03:07:29,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:07:29,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1817 transitions. [2021-12-16 03:07:29,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 139.76923076923077) internal successors, (1817), 13 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:29,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 212.0) internal successors, (2968), 14 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:29,597 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 212.0) internal successors, (2968), 14 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:29,597 INFO L186 Difference]: Start difference. First operand has 186 places, 179 transitions, 364 flow. Second operand 13 states and 1817 transitions. [2021-12-16 03:07:29,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 218 transitions, 640 flow [2021-12-16 03:07:29,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 218 transitions, 640 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-16 03:07:29,606 INFO L242 Difference]: Finished difference. Result has 198 places, 181 transitions, 414 flow [2021-12-16 03:07:29,606 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=414, PETRI_PLACES=198, PETRI_TRANSITIONS=181} [2021-12-16 03:07:29,612 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 7 predicate places. [2021-12-16 03:07:29,613 INFO L470 AbstractCegarLoop]: Abstraction has has 198 places, 181 transitions, 414 flow [2021-12-16 03:07:29,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 138.25) internal successors, (1106), 8 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:29,614 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:07:29,614 INFO L254 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] [2021-12-16 03:07:29,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:07:29,614 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:07:29,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:07:29,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1470203334, now seen corresponding path program 1 times [2021-12-16 03:07:29,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:07:29,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962719701] [2021-12-16 03:07:29,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:07:29,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:07:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:07:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 03:07:29,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:07:29,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962719701] [2021-12-16 03:07:29,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962719701] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:07:29,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282334857] [2021-12-16 03:07:29,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:07:29,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:07:29,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:07:29,821 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) [2021-12-16 03:07:29,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 03:07:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:07:29,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 03:07:29,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:07:30,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 03:07:30,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:07:30,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 03:07:30,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282334857] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-16 03:07:30,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:07:30,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2021-12-16 03:07:30,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453023968] [2021-12-16 03:07:30,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:07:30,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 03:07:30,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:07:30,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 03:07:30,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-12-16 03:07:30,891 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 212 [2021-12-16 03:07:30,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 181 transitions, 414 flow. Second operand has 9 states, 9 states have (on average 151.55555555555554) internal successors, (1364), 9 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:30,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:07:30,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 212 [2021-12-16 03:07:30,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:07:31,387 INFO L129 PetriNetUnfolder]: 1034/1969 cut-off events. [2021-12-16 03:07:31,388 INFO L130 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2021-12-16 03:07:31,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3564 conditions, 1969 events. 1034/1969 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10728 event pairs, 238 based on Foata normal form. 0/1569 useless extension candidates. Maximal degree in co-relation 3553. Up to 447 conditions per place. [2021-12-16 03:07:31,411 INFO L132 encePairwiseOnDemand]: 201/212 looper letters, 94 selfloop transitions, 17 changer transitions 0/238 dead transitions. [2021-12-16 03:07:31,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 238 transitions, 761 flow [2021-12-16 03:07:31,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 03:07:31,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-16 03:07:31,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1727 transitions. [2021-12-16 03:07:31,416 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7405660377358491 [2021-12-16 03:07:31,416 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1727 transitions. [2021-12-16 03:07:31,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1727 transitions. [2021-12-16 03:07:31,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:07:31,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1727 transitions. [2021-12-16 03:07:31,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:31,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:31,428 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:31,428 INFO L186 Difference]: Start difference. First operand has 198 places, 181 transitions, 414 flow. Second operand 11 states and 1727 transitions. [2021-12-16 03:07:31,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 238 transitions, 761 flow [2021-12-16 03:07:31,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 238 transitions, 731 flow, removed 7 selfloop flow, removed 10 redundant places. [2021-12-16 03:07:31,436 INFO L242 Difference]: Finished difference. Result has 196 places, 193 transitions, 478 flow [2021-12-16 03:07:31,436 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=478, PETRI_PLACES=196, PETRI_TRANSITIONS=193} [2021-12-16 03:07:31,438 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 5 predicate places. [2021-12-16 03:07:31,439 INFO L470 AbstractCegarLoop]: Abstraction has has 196 places, 193 transitions, 478 flow [2021-12-16 03:07:31,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 151.55555555555554) internal successors, (1364), 9 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:31,439 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:07:31,440 INFO L254 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] [2021-12-16 03:07:31,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 03:07:31,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:07:31,656 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:07:31,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:07:31,656 INFO L85 PathProgramCache]: Analyzing trace with hash -378263568, now seen corresponding path program 2 times [2021-12-16 03:07:31,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:07:31,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872424912] [2021-12-16 03:07:31,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:07:31,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:07:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:07:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 03:07:31,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:07:31,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872424912] [2021-12-16 03:07:31,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872424912] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:07:31,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721483143] [2021-12-16 03:07:31,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:07:31,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:07:31,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:07:31,763 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) [2021-12-16 03:07:31,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 03:07:31,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-16 03:07:31,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:07:31,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 03:07:31,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:07:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:07:32,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:07:32,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721483143] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:07:32,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:07:32,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-12-16 03:07:32,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821721080] [2021-12-16 03:07:32,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:07:32,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:07:32,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:07:32,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:07:32,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:07:32,181 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 212 [2021-12-16 03:07:32,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 193 transitions, 478 flow. Second operand has 6 states, 6 states have (on average 151.83333333333334) internal successors, (911), 6 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:32,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:07:32,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 212 [2021-12-16 03:07:32,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:07:32,372 INFO L129 PetriNetUnfolder]: 213/810 cut-off events. [2021-12-16 03:07:32,373 INFO L130 PetriNetUnfolder]: For 354/478 co-relation queries the response was YES. [2021-12-16 03:07:32,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 810 events. 213/810 cut-off events. For 354/478 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4294 event pairs, 68 based on Foata normal form. 8/750 useless extension candidates. Maximal degree in co-relation 1523. Up to 215 conditions per place. [2021-12-16 03:07:32,381 INFO L132 encePairwiseOnDemand]: 204/212 looper letters, 58 selfloop transitions, 5 changer transitions 13/219 dead transitions. [2021-12-16 03:07:32,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 219 transitions, 717 flow [2021-12-16 03:07:32,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:07:32,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 03:07:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1083 transitions. [2021-12-16 03:07:32,384 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7297843665768194 [2021-12-16 03:07:32,384 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1083 transitions. [2021-12-16 03:07:32,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1083 transitions. [2021-12-16 03:07:32,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:07:32,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1083 transitions. [2021-12-16 03:07:32,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.71428571428572) internal successors, (1083), 7 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:32,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:32,408 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:32,408 INFO L186 Difference]: Start difference. First operand has 196 places, 193 transitions, 478 flow. Second operand 7 states and 1083 transitions. [2021-12-16 03:07:32,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 219 transitions, 717 flow [2021-12-16 03:07:32,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 219 transitions, 712 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-16 03:07:32,417 INFO L242 Difference]: Finished difference. Result has 203 places, 195 transitions, 501 flow [2021-12-16 03:07:32,417 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=501, PETRI_PLACES=203, PETRI_TRANSITIONS=195} [2021-12-16 03:07:32,418 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 12 predicate places. [2021-12-16 03:07:32,419 INFO L470 AbstractCegarLoop]: Abstraction has has 203 places, 195 transitions, 501 flow [2021-12-16 03:07:32,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.83333333333334) internal successors, (911), 6 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:32,419 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:07:32,419 INFO L254 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] [2021-12-16 03:07:32,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 03:07:32,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-16 03:07:32,645 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:07:32,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:07:32,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2145004234, now seen corresponding path program 1 times [2021-12-16 03:07:32,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:07:32,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83341041] [2021-12-16 03:07:32,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:07:32,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:07:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:07:32,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:07:32,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:07:32,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83341041] [2021-12-16 03:07:32,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83341041] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:07:32,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230583477] [2021-12-16 03:07:32,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:07:32,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:07:32,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:07:32,761 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) [2021-12-16 03:07:32,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 03:07:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:07:32,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 03:07:32,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:07:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:07:33,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:07:33,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:07:33,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230583477] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-16 03:07:33,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:07:33,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2021-12-16 03:07:33,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57841739] [2021-12-16 03:07:33,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:07:33,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 03:07:33,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:07:33,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 03:07:33,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-12-16 03:07:33,706 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 212 [2021-12-16 03:07:33,708 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 195 transitions, 501 flow. Second operand has 9 states, 9 states have (on average 151.66666666666666) internal successors, (1365), 9 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:33,708 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:07:33,708 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 212 [2021-12-16 03:07:33,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:07:34,310 INFO L129 PetriNetUnfolder]: 1698/3565 cut-off events. [2021-12-16 03:07:34,311 INFO L130 PetriNetUnfolder]: For 2112/2354 co-relation queries the response was YES. [2021-12-16 03:07:34,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8100 conditions, 3565 events. 1698/3565 cut-off events. For 2112/2354 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 26906 event pairs, 212 based on Foata normal form. 235/3719 useless extension candidates. Maximal degree in co-relation 8086. Up to 856 conditions per place. [2021-12-16 03:07:34,341 INFO L132 encePairwiseOnDemand]: 200/212 looper letters, 91 selfloop transitions, 30 changer transitions 6/255 dead transitions. [2021-12-16 03:07:34,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 255 transitions, 988 flow [2021-12-16 03:07:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 03:07:34,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-16 03:07:34,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1717 transitions. [2021-12-16 03:07:34,370 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7362778730703259 [2021-12-16 03:07:34,370 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1717 transitions. [2021-12-16 03:07:34,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1717 transitions. [2021-12-16 03:07:34,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:07:34,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1717 transitions. [2021-12-16 03:07:34,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 156.0909090909091) internal successors, (1717), 11 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:34,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:34,382 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:34,382 INFO L186 Difference]: Start difference. First operand has 203 places, 195 transitions, 501 flow. Second operand 11 states and 1717 transitions. [2021-12-16 03:07:34,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 255 transitions, 988 flow [2021-12-16 03:07:34,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 255 transitions, 978 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-12-16 03:07:34,400 INFO L242 Difference]: Finished difference. Result has 213 places, 212 transitions, 699 flow [2021-12-16 03:07:34,400 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=699, PETRI_PLACES=213, PETRI_TRANSITIONS=212} [2021-12-16 03:07:34,402 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 22 predicate places. [2021-12-16 03:07:34,403 INFO L470 AbstractCegarLoop]: Abstraction has has 213 places, 212 transitions, 699 flow [2021-12-16 03:07:34,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 151.66666666666666) internal successors, (1365), 9 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:34,403 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:07:34,404 INFO L254 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] [2021-12-16 03:07:34,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 03:07:34,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:07:34,631 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:07:34,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:07:34,632 INFO L85 PathProgramCache]: Analyzing trace with hash -577225570, now seen corresponding path program 2 times [2021-12-16 03:07:34,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:07:34,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920630565] [2021-12-16 03:07:34,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:07:34,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:07:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:07:34,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:07:34,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:07:34,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920630565] [2021-12-16 03:07:34,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920630565] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:07:34,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046513221] [2021-12-16 03:07:34,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:07:34,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:07:34,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:07:34,789 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) [2021-12-16 03:07:34,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 03:07:34,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-16 03:07:34,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:07:34,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 03:07:34,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:07:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-16 03:07:35,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:07:35,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046513221] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:07:35,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:07:35,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-12-16 03:07:35,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542803480] [2021-12-16 03:07:35,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:07:35,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:07:35,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:07:35,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:07:35,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-12-16 03:07:35,174 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 212 [2021-12-16 03:07:35,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 212 transitions, 699 flow. Second operand has 8 states, 8 states have (on average 141.75) internal successors, (1134), 8 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:35,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:07:35,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 212 [2021-12-16 03:07:35,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:07:35,828 INFO L129 PetriNetUnfolder]: 1529/3306 cut-off events. [2021-12-16 03:07:35,829 INFO L130 PetriNetUnfolder]: For 4724/4967 co-relation queries the response was YES. [2021-12-16 03:07:35,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8884 conditions, 3306 events. 1529/3306 cut-off events. For 4724/4967 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 24973 event pairs, 554 based on Foata normal form. 184/3396 useless extension candidates. Maximal degree in co-relation 8866. Up to 1058 conditions per place. [2021-12-16 03:07:35,868 INFO L132 encePairwiseOnDemand]: 201/212 looper letters, 134 selfloop transitions, 22 changer transitions 7/290 dead transitions. [2021-12-16 03:07:35,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 290 transitions, 1352 flow [2021-12-16 03:07:35,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:07:35,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-16 03:07:35,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1351 transitions. [2021-12-16 03:07:35,872 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7080712788259959 [2021-12-16 03:07:35,872 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1351 transitions. [2021-12-16 03:07:35,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1351 transitions. [2021-12-16 03:07:35,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:07:35,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1351 transitions. [2021-12-16 03:07:35,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 150.11111111111111) internal successors, (1351), 9 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:35,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:35,881 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:35,881 INFO L186 Difference]: Start difference. First operand has 213 places, 212 transitions, 699 flow. Second operand 9 states and 1351 transitions. [2021-12-16 03:07:35,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 290 transitions, 1352 flow [2021-12-16 03:07:35,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 290 transitions, 1323 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-12-16 03:07:35,909 INFO L242 Difference]: Finished difference. Result has 221 places, 224 transitions, 881 flow [2021-12-16 03:07:35,910 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=881, PETRI_PLACES=221, PETRI_TRANSITIONS=224} [2021-12-16 03:07:35,911 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 30 predicate places. [2021-12-16 03:07:35,911 INFO L470 AbstractCegarLoop]: Abstraction has has 221 places, 224 transitions, 881 flow [2021-12-16 03:07:35,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.75) internal successors, (1134), 8 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:35,912 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:07:35,912 INFO L254 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] [2021-12-16 03:07:35,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 03:07:36,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:07:36,137 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:07:36,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:07:36,138 INFO L85 PathProgramCache]: Analyzing trace with hash 184538384, now seen corresponding path program 3 times [2021-12-16 03:07:36,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:07:36,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410884713] [2021-12-16 03:07:36,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:07:36,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:07:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:07:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:07:36,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:07:36,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410884713] [2021-12-16 03:07:36,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410884713] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:07:36,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701013499] [2021-12-16 03:07:36,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 03:07:36,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:07:36,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:07:36,252 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) [2021-12-16 03:07:36,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 03:07:36,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-16 03:07:36,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:07:36,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 03:07:36,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:07:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-16 03:07:36,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:07:36,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701013499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:07:36,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:07:36,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-12-16 03:07:36,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320848769] [2021-12-16 03:07:36,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:07:36,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:07:36,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:07:36,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:07:36,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-16 03:07:36,696 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 212 [2021-12-16 03:07:36,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 224 transitions, 881 flow. Second operand has 8 states, 8 states have (on average 141.75) internal successors, (1134), 8 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:36,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:07:36,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 212 [2021-12-16 03:07:36,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:07:37,399 INFO L129 PetriNetUnfolder]: 2004/4058 cut-off events. [2021-12-16 03:07:37,399 INFO L130 PetriNetUnfolder]: For 7007/7253 co-relation queries the response was YES. [2021-12-16 03:07:37,459 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11576 conditions, 4058 events. 2004/4058 cut-off events. For 7007/7253 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 31315 event pairs, 690 based on Foata normal form. 237/4171 useless extension candidates. Maximal degree in co-relation 11553. Up to 1533 conditions per place. [2021-12-16 03:07:37,489 INFO L132 encePairwiseOnDemand]: 201/212 looper letters, 137 selfloop transitions, 25 changer transitions 7/296 dead transitions. [2021-12-16 03:07:37,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 296 transitions, 1535 flow [2021-12-16 03:07:37,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:07:37,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-16 03:07:37,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1349 transitions. [2021-12-16 03:07:37,493 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7070230607966457 [2021-12-16 03:07:37,493 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1349 transitions. [2021-12-16 03:07:37,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1349 transitions. [2021-12-16 03:07:37,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:07:37,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1349 transitions. [2021-12-16 03:07:37,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 149.88888888888889) internal successors, (1349), 9 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:37,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:37,501 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:37,502 INFO L186 Difference]: Start difference. First operand has 221 places, 224 transitions, 881 flow. Second operand 9 states and 1349 transitions. [2021-12-16 03:07:37,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 296 transitions, 1535 flow [2021-12-16 03:07:37,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 296 transitions, 1502 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-12-16 03:07:37,541 INFO L242 Difference]: Finished difference. Result has 229 places, 235 transitions, 1078 flow [2021-12-16 03:07:37,541 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1078, PETRI_PLACES=229, PETRI_TRANSITIONS=235} [2021-12-16 03:07:37,542 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 38 predicate places. [2021-12-16 03:07:37,542 INFO L470 AbstractCegarLoop]: Abstraction has has 229 places, 235 transitions, 1078 flow [2021-12-16 03:07:37,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.75) internal successors, (1134), 8 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:37,543 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:07:37,544 INFO L254 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] [2021-12-16 03:07:37,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 03:07:37,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:07:37,760 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:07:37,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:07:37,760 INFO L85 PathProgramCache]: Analyzing trace with hash 675682568, now seen corresponding path program 4 times [2021-12-16 03:07:37,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:07:37,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600414807] [2021-12-16 03:07:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:07:37,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:07:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:07:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:07:37,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:07:37,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600414807] [2021-12-16 03:07:37,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600414807] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:07:37,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794954772] [2021-12-16 03:07:37,878 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 03:07:37,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:07:37,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:07:37,884 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) [2021-12-16 03:07:37,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 03:07:37,991 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 03:07:37,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:07:37,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 03:07:37,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:07:38,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:07:38,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:07:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:07:38,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794954772] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-16 03:07:38,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:07:38,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 20 [2021-12-16 03:07:38,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628451466] [2021-12-16 03:07:38,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:07:38,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 03:07:38,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:07:38,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 03:07:38,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-12-16 03:07:38,804 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 212 [2021-12-16 03:07:38,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 235 transitions, 1078 flow. Second operand has 9 states, 9 states have (on average 151.66666666666666) internal successors, (1365), 9 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:38,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:07:38,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 212 [2021-12-16 03:07:38,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:07:39,674 INFO L129 PetriNetUnfolder]: 2304/4811 cut-off events. [2021-12-16 03:07:39,674 INFO L130 PetriNetUnfolder]: For 10551/10826 co-relation queries the response was YES. [2021-12-16 03:07:39,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13933 conditions, 4811 events. 2304/4811 cut-off events. For 10551/10826 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 39499 event pairs, 502 based on Foata normal form. 262/4976 useless extension candidates. Maximal degree in co-relation 13906. Up to 1174 conditions per place. [2021-12-16 03:07:39,728 INFO L132 encePairwiseOnDemand]: 200/212 looper letters, 125 selfloop transitions, 48 changer transitions 2/303 dead transitions. [2021-12-16 03:07:39,729 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 303 transitions, 1769 flow [2021-12-16 03:07:39,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 03:07:39,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-16 03:07:39,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1739 transitions. [2021-12-16 03:07:39,733 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7457118353344768 [2021-12-16 03:07:39,733 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1739 transitions. [2021-12-16 03:07:39,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1739 transitions. [2021-12-16 03:07:39,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:07:39,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1739 transitions. [2021-12-16 03:07:39,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 158.0909090909091) internal successors, (1739), 11 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:39,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:39,742 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:39,742 INFO L186 Difference]: Start difference. First operand has 229 places, 235 transitions, 1078 flow. Second operand 11 states and 1739 transitions. [2021-12-16 03:07:39,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 303 transitions, 1769 flow [2021-12-16 03:07:39,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 303 transitions, 1726 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-12-16 03:07:39,802 INFO L242 Difference]: Finished difference. Result has 238 places, 251 transitions, 1392 flow [2021-12-16 03:07:39,802 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1392, PETRI_PLACES=238, PETRI_TRANSITIONS=251} [2021-12-16 03:07:39,802 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 47 predicate places. [2021-12-16 03:07:39,802 INFO L470 AbstractCegarLoop]: Abstraction has has 238 places, 251 transitions, 1392 flow [2021-12-16 03:07:39,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 151.66666666666666) internal successors, (1365), 9 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:39,803 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:07:39,803 INFO L254 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] [2021-12-16 03:07:39,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 03:07:40,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:07:40,005 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:07:40,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:07:40,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1375243136, now seen corresponding path program 5 times [2021-12-16 03:07:40,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:07:40,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062092213] [2021-12-16 03:07:40,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:07:40,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:07:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:07:40,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:07:40,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:07:40,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062092213] [2021-12-16 03:07:40,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062092213] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:07:40,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114265855] [2021-12-16 03:07:40,133 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 03:07:40,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:07:40,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:07:40,134 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) [2021-12-16 03:07:40,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 03:07:40,244 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:07:40,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:07:40,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 03:07:40,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:07:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:07:40,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:07:40,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:07:40,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114265855] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:07:40,765 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 03:07:40,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2021-12-16 03:07:40,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973069083] [2021-12-16 03:07:40,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 03:07:40,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-16 03:07:40,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:07:40,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-16 03:07:40,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-12-16 03:07:40,771 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 212 [2021-12-16 03:07:40,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 251 transitions, 1392 flow. Second operand has 17 states, 17 states have (on average 147.0) internal successors, (2499), 17 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:40,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:07:40,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 212 [2021-12-16 03:07:40,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:07:43,706 INFO L129 PetriNetUnfolder]: 8160/15044 cut-off events. [2021-12-16 03:07:43,706 INFO L130 PetriNetUnfolder]: For 45897/45918 co-relation queries the response was YES. [2021-12-16 03:07:43,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47607 conditions, 15044 events. 8160/15044 cut-off events. For 45897/45918 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 120402 event pairs, 453 based on Foata normal form. 21/15023 useless extension candidates. Maximal degree in co-relation 47577. Up to 1274 conditions per place. [2021-12-16 03:07:43,847 INFO L132 encePairwiseOnDemand]: 192/212 looper letters, 356 selfloop transitions, 203 changer transitions 6/687 dead transitions. [2021-12-16 03:07:43,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 687 transitions, 4861 flow [2021-12-16 03:07:43,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-16 03:07:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-16 03:07:43,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5435 transitions. [2021-12-16 03:07:43,857 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7324797843665768 [2021-12-16 03:07:43,857 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5435 transitions. [2021-12-16 03:07:43,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5435 transitions. [2021-12-16 03:07:43,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:07:43,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5435 transitions. [2021-12-16 03:07:43,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 155.28571428571428) internal successors, (5435), 35 states have internal predecessors, (5435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:43,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 212.0) internal successors, (7632), 36 states have internal predecessors, (7632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:43,886 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 212.0) internal successors, (7632), 36 states have internal predecessors, (7632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:43,886 INFO L186 Difference]: Start difference. First operand has 238 places, 251 transitions, 1392 flow. Second operand 35 states and 5435 transitions. [2021-12-16 03:07:43,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 687 transitions, 4861 flow [2021-12-16 03:07:44,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 687 transitions, 4802 flow, removed 26 selfloop flow, removed 4 redundant places. [2021-12-16 03:07:44,217 INFO L242 Difference]: Finished difference. Result has 276 places, 385 transitions, 3245 flow [2021-12-16 03:07:44,217 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3245, PETRI_PLACES=276, PETRI_TRANSITIONS=385} [2021-12-16 03:07:44,218 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 85 predicate places. [2021-12-16 03:07:44,218 INFO L470 AbstractCegarLoop]: Abstraction has has 276 places, 385 transitions, 3245 flow [2021-12-16 03:07:44,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 147.0) internal successors, (2499), 17 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:44,219 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:07:44,219 INFO L254 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] [2021-12-16 03:07:44,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-16 03:07:44,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:07:44,440 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:07:44,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:07:44,440 INFO L85 PathProgramCache]: Analyzing trace with hash -686560330, now seen corresponding path program 1 times [2021-12-16 03:07:44,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:07:44,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432237224] [2021-12-16 03:07:44,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:07:44,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:07:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:07:44,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 03:07:44,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:07:44,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432237224] [2021-12-16 03:07:44,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432237224] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:07:44,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781814651] [2021-12-16 03:07:44,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:07:44,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:07:44,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:07:44,628 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) [2021-12-16 03:07:44,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 03:07:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:07:44,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-16 03:07:44,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:07:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 03:07:45,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:07:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 03:07:45,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781814651] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:07:45,790 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 03:07:45,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2021-12-16 03:07:45,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517184232] [2021-12-16 03:07:45,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 03:07:45,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-16 03:07:45,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:07:45,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-16 03:07:45,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2021-12-16 03:07:45,793 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 212 [2021-12-16 03:07:45,795 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 385 transitions, 3245 flow. Second operand has 27 states, 27 states have (on average 124.18518518518519) internal successors, (3353), 27 states have internal predecessors, (3353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:45,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:07:45,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 212 [2021-12-16 03:07:45,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:07:47,720 INFO L129 PetriNetUnfolder]: 2414/7031 cut-off events. [2021-12-16 03:07:47,720 INFO L130 PetriNetUnfolder]: For 38646/39096 co-relation queries the response was YES. [2021-12-16 03:07:47,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24561 conditions, 7031 events. 2414/7031 cut-off events. For 38646/39096 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 64336 event pairs, 797 based on Foata normal form. 311/7215 useless extension candidates. Maximal degree in co-relation 24523. Up to 2153 conditions per place. [2021-12-16 03:07:47,790 INFO L132 encePairwiseOnDemand]: 182/212 looper letters, 348 selfloop transitions, 70 changer transitions 2/599 dead transitions. [2021-12-16 03:07:47,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 599 transitions, 5903 flow [2021-12-16 03:07:47,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-16 03:07:47,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-12-16 03:07:47,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3794 transitions. [2021-12-16 03:07:47,795 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5965408805031447 [2021-12-16 03:07:47,795 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3794 transitions. [2021-12-16 03:07:47,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3794 transitions. [2021-12-16 03:07:47,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:07:47,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3794 transitions. [2021-12-16 03:07:47,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 126.46666666666667) internal successors, (3794), 30 states have internal predecessors, (3794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:47,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 212.0) internal successors, (6572), 31 states have internal predecessors, (6572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:47,809 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 212.0) internal successors, (6572), 31 states have internal predecessors, (6572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:47,809 INFO L186 Difference]: Start difference. First operand has 276 places, 385 transitions, 3245 flow. Second operand 30 states and 3794 transitions. [2021-12-16 03:07:47,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 599 transitions, 5903 flow [2021-12-16 03:07:48,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 599 transitions, 5639 flow, removed 74 selfloop flow, removed 10 redundant places. [2021-12-16 03:07:48,075 INFO L242 Difference]: Finished difference. Result has 302 places, 440 transitions, 3883 flow [2021-12-16 03:07:48,076 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=3091, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3883, PETRI_PLACES=302, PETRI_TRANSITIONS=440} [2021-12-16 03:07:48,077 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 111 predicate places. [2021-12-16 03:07:48,077 INFO L470 AbstractCegarLoop]: Abstraction has has 302 places, 440 transitions, 3883 flow [2021-12-16 03:07:48,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 124.18518518518519) internal successors, (3353), 27 states have internal predecessors, (3353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:07:48,078 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:07:48,078 INFO L254 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] [2021-12-16 03:07:48,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-16 03:07:48,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-16 03:07:48,279 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:07:48,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:07:48,279 INFO L85 PathProgramCache]: Analyzing trace with hash -761571678, now seen corresponding path program 1 times [2021-12-16 03:07:48,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:07:48,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428345766] [2021-12-16 03:07:48,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:07:48,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:07:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:07:49,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 03:07:49,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:07:49,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428345766] [2021-12-16 03:07:49,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428345766] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:07:49,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929187921] [2021-12-16 03:07:49,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:07:49,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:07:49,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:07:49,187 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:07:49,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-16 03:07:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:07:49,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 71 conjunts are in the unsatisfiable core [2021-12-16 03:07:49,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:07:49,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:07:50,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-16 03:07:50,814 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 03:07:50,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-16 03:07:50,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:07:51,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:07:51,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:07:51,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:07:51,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:07:51,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2021-12-16 03:07:52,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:07:52,412 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-12-16 03:07:52,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 13 [2021-12-16 03:07:52,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 03:07:52,450 INFO L328 TraceCheckSpWp]: Computing backward predicates...