./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe005_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe005_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/bin/uautomizer-UnR33cPsHg --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 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:54:24,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:54:24,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:54:24,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:54:24,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:54:24,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:54:24,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:54:24,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:54:24,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:54:24,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:54:24,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:54:24,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:54:24,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:54:24,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:54:24,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:54:24,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:54:24,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:54:24,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:54:24,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:54:24,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:54:24,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:54:24,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:54:24,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:54:24,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:54:24,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:54:24,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:54:24,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:54:24,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:54:24,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:54:24,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:54:24,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:54:24,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:54:24,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:54:24,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:54:24,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:54:24,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:54:24,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:54:24,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:54:24,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:54:24,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:54:24,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:54:24,457 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 08:54:24,485 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:54:24,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:54:24,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:54:24,487 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:54:24,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:54:24,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:54:24,488 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:54:24,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:54:24,491 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:54:24,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:54:24,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:54:24,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:54:24,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:54:24,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:54:24,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:54:24,495 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:54:24,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:54:24,496 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:54:24,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:54:24,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:54:24,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:54:24,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:54:24,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:54:24,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:54:24,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:54:24,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:54:24,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:54:24,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:54:24,500 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:54:24,500 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:54:24,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:54:24,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:54:24,501 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce [2021-10-28 08:54:24,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:54:24,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:54:24,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:54:24,814 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:54:24,815 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:54:24,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/pthread-wmm/safe005_tso.i [2021-10-28 08:54:24,888 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/bin/uautomizer-UnR33cPsHg/data/f6a9b7061/a48eb6d67ae44e37b8c238b7a2bd8b31/FLAGffb5a8e81 [2021-10-28 08:54:25,428 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:54:25,429 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/sv-benchmarks/c/pthread-wmm/safe005_tso.i [2021-10-28 08:54:25,448 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/bin/uautomizer-UnR33cPsHg/data/f6a9b7061/a48eb6d67ae44e37b8c238b7a2bd8b31/FLAGffb5a8e81 [2021-10-28 08:54:25,706 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/bin/uautomizer-UnR33cPsHg/data/f6a9b7061/a48eb6d67ae44e37b8c238b7a2bd8b31 [2021-10-28 08:54:25,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:54:25,710 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:54:25,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:54:25,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:54:25,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:54:25,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:54:25" (1/1) ... [2021-10-28 08:54:25,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f586b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:25, skipping insertion in model container [2021-10-28 08:54:25,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:54:25" (1/1) ... [2021-10-28 08:54:25,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:54:25,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:54:25,970 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/sv-benchmarks/c/pthread-wmm/safe005_tso.i[945,958] [2021-10-28 08:54:26,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:54:26,146 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:54:26,159 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/sv-benchmarks/c/pthread-wmm/safe005_tso.i[945,958] [2021-10-28 08:54:26,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:54:26,240 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:54:26,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:26 WrapperNode [2021-10-28 08:54:26,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:54:26,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:54:26,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:54:26,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:54:26,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:26" (1/1) ... [2021-10-28 08:54:26,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:26" (1/1) ... [2021-10-28 08:54:26,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:54:26,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:54:26,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:54:26,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:54:26,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:26" (1/1) ... [2021-10-28 08:54:26,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:26" (1/1) ... [2021-10-28 08:54:26,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:26" (1/1) ... [2021-10-28 08:54:26,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:26" (1/1) ... [2021-10-28 08:54:26,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:26" (1/1) ... [2021-10-28 08:54:26,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:26" (1/1) ... [2021-10-28 08:54:26,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:26" (1/1) ... [2021-10-28 08:54:26,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:54:26,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:54:26,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:54:26,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:54:26,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:26" (1/1) ... [2021-10-28 08:54:26,332 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:54:26,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:54:26,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:54:26,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:54:26,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:54:26,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 08:54:26,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:54:26,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:54:26,430 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-28 08:54:26,430 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-28 08:54:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-28 08:54:26,431 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-28 08:54:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-28 08:54:26,431 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-28 08:54:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:54:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 08:54:26,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:54:26,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:54:26,434 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 08:54:26,920 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:54:26,920 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 08:54:26,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:54:26 BoogieIcfgContainer [2021-10-28 08:54:26,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:54:26,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:54:26,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:54:26,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:54:26,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:54:25" (1/3) ... [2021-10-28 08:54:26,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4f1ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:54:26, skipping insertion in model container [2021-10-28 08:54:26,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:26" (2/3) ... [2021-10-28 08:54:26,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4f1ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:54:26, skipping insertion in model container [2021-10-28 08:54:26,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:54:26" (3/3) ... [2021-10-28 08:54:26,937 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.i [2021-10-28 08:54:26,948 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 08:54:26,948 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:54:26,948 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:54:26,948 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 08:54:26,995 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:26,995 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:26,996 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:26,996 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:26,996 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:26,996 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:26,997 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:26,997 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:26,997 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:26,998 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:26,998 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:26,998 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:26,999 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:26,999 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:26,999 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:26,999 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,001 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,002 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,003 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,003 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,010 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,010 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,011 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,011 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,011 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,013 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,013 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,013 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,014 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,015 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,015 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,015 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,016 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,016 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,016 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,017 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,021 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,021 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,022 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,022 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,031 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,032 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,032 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,032 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,037 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,038 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,038 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,039 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 08:54:27,042 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-28 08:54:27,110 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:54:27,117 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 [2021-10-28 08:54:27,117 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-28 08:54:27,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-10-28 08:54:27,202 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-10-28 08:54:27,205 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 08:54:27,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-28 08:54:27,212 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2021-10-28 08:54:27,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2021-10-28 08:54:27,259 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-10-28 08:54:27,259 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 08:54:27,260 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:54:27,261 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] [2021-10-28 08:54:27,261 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 08:54:27,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:54:27,268 INFO L85 PathProgramCache]: Analyzing trace with hash -206144659, now seen corresponding path program 1 times [2021-10-28 08:54:27,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:54:27,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532473902] [2021-10-28 08:54:27,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:54:27,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:54:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:54:27,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:54:27,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:54:27,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532473902] [2021-10-28 08:54:27,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532473902] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:54:27,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:54:27,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 08:54:27,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742450597] [2021-10-28 08:54:27,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:54:27,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:54:27,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:54:27,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:54:27,795 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 84 [2021-10-28 08:54:27,800 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:27,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:54:27,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 84 [2021-10-28 08:54:27,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:54:27,940 INFO L129 PetriNetUnfolder]: 3/83 cut-off events. [2021-10-28 08:54:27,941 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 08:54:27,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 83 events. 3/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 86 event pairs, 0 based on Foata normal form. 4/86 useless extension candidates. Maximal degree in co-relation 82. Up to 7 conditions per place. [2021-10-28 08:54:27,943 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 6 selfloop transitions, 2 changer transitions 11/78 dead transitions. [2021-10-28 08:54:27,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 78 transitions, 201 flow [2021-10-28 08:54:27,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:54:27,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 08:54:27,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 670 transitions. [2021-10-28 08:54:27,962 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8862433862433863 [2021-10-28 08:54:27,977 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 670 transitions. [2021-10-28 08:54:27,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 670 transitions. [2021-10-28 08:54:27,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:54:27,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 670 transitions. [2021-10-28 08:54:27,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.44444444444444) internal successors, (670), 9 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:28,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:28,005 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:28,007 INFO L186 Difference]: Start difference. First operand has 78 places, 69 transitions, 147 flow. Second operand 9 states and 670 transitions. [2021-10-28 08:54:28,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 78 transitions, 201 flow [2021-10-28 08:54:28,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 78 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 08:54:28,016 INFO L242 Difference]: Finished difference. Result has 90 places, 67 transitions, 160 flow [2021-10-28 08:54:28,019 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=160, PETRI_PLACES=90, PETRI_TRANSITIONS=67} [2021-10-28 08:54:28,020 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2021-10-28 08:54:28,020 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 67 transitions, 160 flow [2021-10-28 08:54:28,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:28,021 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:54:28,021 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] [2021-10-28 08:54:28,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:54:28,022 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 08:54:28,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:54:28,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1072234386, now seen corresponding path program 1 times [2021-10-28 08:54:28,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:54:28,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391564972] [2021-10-28 08:54:28,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:54:28,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:54:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:54:28,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:54:28,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:54:28,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391564972] [2021-10-28 08:54:28,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391564972] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:54:28,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:54:28,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:54:28,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647051770] [2021-10-28 08:54:28,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:54:28,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:54:28,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:54:28,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:54:28,317 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-10-28 08:54:28,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 67 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 66.57142857142857) internal successors, (466), 7 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:28,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:54:28,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-10-28 08:54:28,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:54:28,704 INFO L129 PetriNetUnfolder]: 131/396 cut-off events. [2021-10-28 08:54:28,705 INFO L130 PetriNetUnfolder]: For 117/123 co-relation queries the response was YES. [2021-10-28 08:54:28,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 396 events. 131/396 cut-off events. For 117/123 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1866 event pairs, 9 based on Foata normal form. 16/397 useless extension candidates. Maximal degree in co-relation 752. Up to 53 conditions per place. [2021-10-28 08:54:28,718 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 17 selfloop transitions, 6 changer transitions 39/114 dead transitions. [2021-10-28 08:54:28,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 114 transitions, 418 flow [2021-10-28 08:54:28,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 08:54:28,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 08:54:28,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 910 transitions. [2021-10-28 08:54:28,731 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-10-28 08:54:28,732 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 910 transitions. [2021-10-28 08:54:28,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 910 transitions. [2021-10-28 08:54:28,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:54:28,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 910 transitions. [2021-10-28 08:54:28,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.0) internal successors, (910), 13 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:28,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:28,748 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:28,749 INFO L186 Difference]: Start difference. First operand has 90 places, 67 transitions, 160 flow. Second operand 13 states and 910 transitions. [2021-10-28 08:54:28,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 114 transitions, 418 flow [2021-10-28 08:54:28,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 114 transitions, 366 flow, removed 24 selfloop flow, removed 8 redundant places. [2021-10-28 08:54:28,763 INFO L242 Difference]: Finished difference. Result has 99 places, 70 transitions, 220 flow [2021-10-28 08:54:28,764 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=220, PETRI_PLACES=99, PETRI_TRANSITIONS=70} [2021-10-28 08:54:28,764 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 21 predicate places. [2021-10-28 08:54:28,764 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 70 transitions, 220 flow [2021-10-28 08:54:28,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.57142857142857) internal successors, (466), 7 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:28,765 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:54:28,766 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] [2021-10-28 08:54:28,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:54:28,766 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 08:54:28,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:54:28,771 INFO L85 PathProgramCache]: Analyzing trace with hash -210274781, now seen corresponding path program 1 times [2021-10-28 08:54:28,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:54:28,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815180373] [2021-10-28 08:54:28,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:54:28,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:54:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:54:28,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:54:28,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:54:28,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815180373] [2021-10-28 08:54:28,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815180373] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:54:28,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:54:28,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:54:28,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253539556] [2021-10-28 08:54:28,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:54:28,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:54:28,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:54:29,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:54:29,001 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 84 [2021-10-28 08:54:29,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 70 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:29,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:54:29,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 84 [2021-10-28 08:54:29,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:54:29,160 INFO L129 PetriNetUnfolder]: 31/223 cut-off events. [2021-10-28 08:54:29,160 INFO L130 PetriNetUnfolder]: For 391/486 co-relation queries the response was YES. [2021-10-28 08:54:29,162 INFO L84 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 223 events. 31/223 cut-off events. For 391/486 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1005 event pairs, 10 based on Foata normal form. 7/226 useless extension candidates. Maximal degree in co-relation 545. Up to 35 conditions per place. [2021-10-28 08:54:29,163 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 13 selfloop transitions, 5 changer transitions 11/85 dead transitions. [2021-10-28 08:54:29,164 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 85 transitions, 379 flow [2021-10-28 08:54:29,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:54:29,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 08:54:29,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 502 transitions. [2021-10-28 08:54:29,167 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8537414965986394 [2021-10-28 08:54:29,168 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 502 transitions. [2021-10-28 08:54:29,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 502 transitions. [2021-10-28 08:54:29,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:54:29,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 502 transitions. [2021-10-28 08:54:29,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.71428571428571) internal successors, (502), 7 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:29,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:29,176 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:29,176 INFO L186 Difference]: Start difference. First operand has 99 places, 70 transitions, 220 flow. Second operand 7 states and 502 transitions. [2021-10-28 08:54:29,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 85 transitions, 379 flow [2021-10-28 08:54:29,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 85 transitions, 344 flow, removed 16 selfloop flow, removed 4 redundant places. [2021-10-28 08:54:29,189 INFO L242 Difference]: Finished difference. Result has 97 places, 72 transitions, 246 flow [2021-10-28 08:54:29,190 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=246, PETRI_PLACES=97, PETRI_TRANSITIONS=72} [2021-10-28 08:54:29,190 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 19 predicate places. [2021-10-28 08:54:29,190 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 72 transitions, 246 flow [2021-10-28 08:54:29,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:29,191 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:54:29,192 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] [2021-10-28 08:54:29,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:54:29,196 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 08:54:29,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:54:29,198 INFO L85 PathProgramCache]: Analyzing trace with hash 799248823, now seen corresponding path program 1 times [2021-10-28 08:54:29,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:54:29,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911793574] [2021-10-28 08:54:29,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:54:29,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:54:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:54:29,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:54:29,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:54:29,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911793574] [2021-10-28 08:54:29,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911793574] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:54:29,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:54:29,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:54:29,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287785424] [2021-10-28 08:54:29,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:54:29,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:54:29,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:54:29,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:54:29,407 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 84 [2021-10-28 08:54:29,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 72 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:29,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:54:29,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 84 [2021-10-28 08:54:29,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:54:29,541 INFO L129 PetriNetUnfolder]: 26/207 cut-off events. [2021-10-28 08:54:29,542 INFO L130 PetriNetUnfolder]: For 381/594 co-relation queries the response was YES. [2021-10-28 08:54:29,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 207 events. 26/207 cut-off events. For 381/594 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 892 event pairs, 6 based on Foata normal form. 7/209 useless extension candidates. Maximal degree in co-relation 515. Up to 39 conditions per place. [2021-10-28 08:54:29,544 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 13 selfloop transitions, 5 changer transitions 11/85 dead transitions. [2021-10-28 08:54:29,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 85 transitions, 389 flow [2021-10-28 08:54:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:54:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 08:54:29,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 502 transitions. [2021-10-28 08:54:29,547 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8537414965986394 [2021-10-28 08:54:29,548 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 502 transitions. [2021-10-28 08:54:29,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 502 transitions. [2021-10-28 08:54:29,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:54:29,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 502 transitions. [2021-10-28 08:54:29,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.71428571428571) internal successors, (502), 7 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:29,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:29,553 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:29,553 INFO L186 Difference]: Start difference. First operand has 97 places, 72 transitions, 246 flow. Second operand 7 states and 502 transitions. [2021-10-28 08:54:29,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 85 transitions, 389 flow [2021-10-28 08:54:29,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 85 transitions, 344 flow, removed 18 selfloop flow, removed 8 redundant places. [2021-10-28 08:54:29,559 INFO L242 Difference]: Finished difference. Result has 96 places, 72 transitions, 238 flow [2021-10-28 08:54:29,559 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=238, PETRI_PLACES=96, PETRI_TRANSITIONS=72} [2021-10-28 08:54:29,560 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 18 predicate places. [2021-10-28 08:54:29,560 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 72 transitions, 238 flow [2021-10-28 08:54:29,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:29,561 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:54:29,561 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] [2021-10-28 08:54:29,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 08:54:29,561 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 08:54:29,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:54:29,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1738514999, now seen corresponding path program 2 times [2021-10-28 08:54:29,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:54:29,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742475217] [2021-10-28 08:54:29,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:54:29,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:54:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:54:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:54:29,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:54:29,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742475217] [2021-10-28 08:54:29,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742475217] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:54:29,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:54:29,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:54:29,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796939991] [2021-10-28 08:54:29,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:54:29,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:54:29,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:54:29,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:54:29,701 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 84 [2021-10-28 08:54:29,702 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 72 transitions, 238 flow. Second operand has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:29,702 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:54:29,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 84 [2021-10-28 08:54:29,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:54:29,928 INFO L129 PetriNetUnfolder]: 11/200 cut-off events. [2021-10-28 08:54:29,929 INFO L130 PetriNetUnfolder]: For 217/294 co-relation queries the response was YES. [2021-10-28 08:54:29,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 200 events. 11/200 cut-off events. For 217/294 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 919 event pairs, 4 based on Foata normal form. 9/203 useless extension candidates. Maximal degree in co-relation 421. Up to 24 conditions per place. [2021-10-28 08:54:29,931 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 17 selfloop transitions, 4 changer transitions 16/93 dead transitions. [2021-10-28 08:54:29,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 93 transitions, 438 flow [2021-10-28 08:54:29,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:54:29,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 08:54:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 784 transitions. [2021-10-28 08:54:29,935 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8484848484848485 [2021-10-28 08:54:29,935 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 784 transitions. [2021-10-28 08:54:29,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 784 transitions. [2021-10-28 08:54:29,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:54:29,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 784 transitions. [2021-10-28 08:54:29,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 71.27272727272727) internal successors, (784), 11 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:29,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 84.0) internal successors, (1008), 12 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:29,943 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 84.0) internal successors, (1008), 12 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:29,944 INFO L186 Difference]: Start difference. First operand has 96 places, 72 transitions, 238 flow. Second operand 11 states and 784 transitions. [2021-10-28 08:54:29,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 93 transitions, 438 flow [2021-10-28 08:54:29,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 93 transitions, 390 flow, removed 14 selfloop flow, removed 7 redundant places. [2021-10-28 08:54:29,949 INFO L242 Difference]: Finished difference. Result has 105 places, 71 transitions, 239 flow [2021-10-28 08:54:29,950 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=239, PETRI_PLACES=105, PETRI_TRANSITIONS=71} [2021-10-28 08:54:29,950 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 27 predicate places. [2021-10-28 08:54:29,950 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 71 transitions, 239 flow [2021-10-28 08:54:29,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:29,951 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:54:29,951 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] [2021-10-28 08:54:29,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 08:54:29,952 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 08:54:29,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:54:29,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1073683674, now seen corresponding path program 1 times [2021-10-28 08:54:29,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:54:29,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010813838] [2021-10-28 08:54:29,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:54:29,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:54:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:54:30,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:54:30,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:54:30,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010813838] [2021-10-28 08:54:30,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010813838] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:54:30,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:54:30,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 08:54:30,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946751978] [2021-10-28 08:54:30,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:54:30,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:54:30,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:54:30,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:54:30,138 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-28 08:54:30,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 71 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:30,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:54:30,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-28 08:54:30,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:54:30,481 INFO L129 PetriNetUnfolder]: 416/1032 cut-off events. [2021-10-28 08:54:30,485 INFO L130 PetriNetUnfolder]: For 498/528 co-relation queries the response was YES. [2021-10-28 08:54:30,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2111 conditions, 1032 events. 416/1032 cut-off events. For 498/528 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 7435 event pairs, 20 based on Foata normal form. 35/976 useless extension candidates. Maximal degree in co-relation 2060. Up to 354 conditions per place. [2021-10-28 08:54:30,497 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 17 selfloop transitions, 14 changer transitions 4/96 dead transitions. [2021-10-28 08:54:30,497 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 96 transitions, 359 flow [2021-10-28 08:54:30,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:54:30,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 08:54:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 667 transitions. [2021-10-28 08:54:30,501 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8822751322751323 [2021-10-28 08:54:30,501 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 667 transitions. [2021-10-28 08:54:30,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 667 transitions. [2021-10-28 08:54:30,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:54:30,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 667 transitions. [2021-10-28 08:54:30,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.11111111111111) internal successors, (667), 9 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:30,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:30,513 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:30,513 INFO L186 Difference]: Start difference. First operand has 105 places, 71 transitions, 239 flow. Second operand 9 states and 667 transitions. [2021-10-28 08:54:30,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 96 transitions, 359 flow [2021-10-28 08:54:30,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 96 transitions, 327 flow, removed 11 selfloop flow, removed 11 redundant places. [2021-10-28 08:54:30,522 INFO L242 Difference]: Finished difference. Result has 99 places, 83 transitions, 307 flow [2021-10-28 08:54:30,522 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=307, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2021-10-28 08:54:30,522 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 21 predicate places. [2021-10-28 08:54:30,522 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 307 flow [2021-10-28 08:54:30,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:30,523 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:54:30,524 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] [2021-10-28 08:54:30,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 08:54:30,525 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 08:54:30,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:54:30,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1654020077, now seen corresponding path program 1 times [2021-10-28 08:54:30,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:54:30,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534489803] [2021-10-28 08:54:30,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:54:30,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:54:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:54:30,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:54:30,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:54:30,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534489803] [2021-10-28 08:54:30,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534489803] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:54:30,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:54:30,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:54:30,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389077422] [2021-10-28 08:54:30,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:54:30,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:54:30,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:54:30,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:54:30,687 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-28 08:54:30,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 307 flow. Second operand has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:30,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:54:30,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-28 08:54:30,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:54:31,056 INFO L129 PetriNetUnfolder]: 393/1057 cut-off events. [2021-10-28 08:54:31,056 INFO L130 PetriNetUnfolder]: For 2382/2918 co-relation queries the response was YES. [2021-10-28 08:54:31,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3595 conditions, 1057 events. 393/1057 cut-off events. For 2382/2918 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8122 event pairs, 4 based on Foata normal form. 122/1099 useless extension candidates. Maximal degree in co-relation 3547. Up to 447 conditions per place. [2021-10-28 08:54:31,068 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 15 selfloop transitions, 27 changer transitions 8/111 dead transitions. [2021-10-28 08:54:31,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 111 transitions, 588 flow [2021-10-28 08:54:31,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 08:54:31,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 08:54:31,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 888 transitions. [2021-10-28 08:54:31,073 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2021-10-28 08:54:31,073 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 888 transitions. [2021-10-28 08:54:31,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 888 transitions. [2021-10-28 08:54:31,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:54:31,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 888 transitions. [2021-10-28 08:54:31,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:31,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 84.0) internal successors, (1092), 13 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:31,086 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 84.0) internal successors, (1092), 13 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:31,086 INFO L186 Difference]: Start difference. First operand has 99 places, 83 transitions, 307 flow. Second operand 12 states and 888 transitions. [2021-10-28 08:54:31,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 111 transitions, 588 flow [2021-10-28 08:54:31,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 111 transitions, 586 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 08:54:31,099 INFO L242 Difference]: Finished difference. Result has 114 places, 99 transitions, 518 flow [2021-10-28 08:54:31,099 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=518, PETRI_PLACES=114, PETRI_TRANSITIONS=99} [2021-10-28 08:54:31,100 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 36 predicate places. [2021-10-28 08:54:31,100 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 99 transitions, 518 flow [2021-10-28 08:54:31,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:31,100 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:54:31,101 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] [2021-10-28 08:54:31,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 08:54:31,101 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 08:54:31,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:54:31,102 INFO L85 PathProgramCache]: Analyzing trace with hash 52651434, now seen corresponding path program 1 times [2021-10-28 08:54:31,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:54:31,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826141097] [2021-10-28 08:54:31,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:54:31,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:54:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:54:31,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:54:31,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:54:31,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826141097] [2021-10-28 08:54:31,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826141097] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:54:31,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:54:31,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 08:54:31,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276315376] [2021-10-28 08:54:31,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:54:31,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:54:31,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:54:31,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:54:31,305 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-28 08:54:31,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 99 transitions, 518 flow. Second operand has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:31,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:54:31,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-28 08:54:31,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:54:31,744 INFO L129 PetriNetUnfolder]: 270/902 cut-off events. [2021-10-28 08:54:31,744 INFO L130 PetriNetUnfolder]: For 4040/4926 co-relation queries the response was YES. [2021-10-28 08:54:31,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3866 conditions, 902 events. 270/902 cut-off events. For 4040/4926 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7497 event pairs, 0 based on Foata normal form. 145/985 useless extension candidates. Maximal degree in co-relation 3811. Up to 332 conditions per place. [2021-10-28 08:54:31,754 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 10 selfloop transitions, 32 changer transitions 15/118 dead transitions. [2021-10-28 08:54:31,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 118 transitions, 770 flow [2021-10-28 08:54:31,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 08:54:31,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-28 08:54:31,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1097 transitions. [2021-10-28 08:54:31,760 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8706349206349207 [2021-10-28 08:54:31,760 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1097 transitions. [2021-10-28 08:54:31,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1097 transitions. [2021-10-28 08:54:31,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:54:31,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1097 transitions. [2021-10-28 08:54:31,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 73.13333333333334) internal successors, (1097), 15 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:31,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 84.0) internal successors, (1344), 16 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:31,772 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 84.0) internal successors, (1344), 16 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:31,772 INFO L186 Difference]: Start difference. First operand has 114 places, 99 transitions, 518 flow. Second operand 15 states and 1097 transitions. [2021-10-28 08:54:31,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 118 transitions, 770 flow [2021-10-28 08:54:31,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 118 transitions, 682 flow, removed 35 selfloop flow, removed 9 redundant places. [2021-10-28 08:54:31,818 INFO L242 Difference]: Finished difference. Result has 125 places, 100 transitions, 538 flow [2021-10-28 08:54:31,818 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=538, PETRI_PLACES=125, PETRI_TRANSITIONS=100} [2021-10-28 08:54:31,819 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 47 predicate places. [2021-10-28 08:54:31,819 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 100 transitions, 538 flow [2021-10-28 08:54:31,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:31,820 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 08:54:31,820 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] [2021-10-28 08:54:31,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 08:54:31,821 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 08:54:31,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:54:31,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1618203837, now seen corresponding path program 1 times [2021-10-28 08:54:31,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:54:31,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331954952] [2021-10-28 08:54:31,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:54:31,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:54:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:54:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:54:31,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:54:31,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331954952] [2021-10-28 08:54:31,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331954952] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:54:31,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:54:31,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 08:54:31,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128137498] [2021-10-28 08:54:31,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:54:31,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:54:31,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:54:31,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:54:31,992 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-28 08:54:31,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 100 transitions, 538 flow. Second operand has 7 states, 7 states have (on average 71.42857142857143) internal successors, (500), 7 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:31,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 08:54:31,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-28 08:54:31,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 08:54:32,239 INFO L129 PetriNetUnfolder]: 192/890 cut-off events. [2021-10-28 08:54:32,240 INFO L130 PetriNetUnfolder]: For 2728/2848 co-relation queries the response was YES. [2021-10-28 08:54:32,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3001 conditions, 890 events. 192/890 cut-off events. For 2728/2848 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8156 event pairs, 0 based on Foata normal form. 2/831 useless extension candidates. Maximal degree in co-relation 2943. Up to 153 conditions per place. [2021-10-28 08:54:32,248 INFO L132 encePairwiseOnDemand]: 78/84 looper letters, 0 selfloop transitions, 0 changer transitions 99/99 dead transitions. [2021-10-28 08:54:32,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 99 transitions, 560 flow [2021-10-28 08:54:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:54:32,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 08:54:32,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 501 transitions. [2021-10-28 08:54:32,251 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8520408163265306 [2021-10-28 08:54:32,252 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 501 transitions. [2021-10-28 08:54:32,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 501 transitions. [2021-10-28 08:54:32,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:54:32,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 501 transitions. [2021-10-28 08:54:32,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:32,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:32,259 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:32,259 INFO L186 Difference]: Start difference. First operand has 125 places, 100 transitions, 538 flow. Second operand 7 states and 501 transitions. [2021-10-28 08:54:32,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 99 transitions, 560 flow [2021-10-28 08:54:32,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 99 transitions, 463 flow, removed 15 selfloop flow, removed 15 redundant places. [2021-10-28 08:54:32,299 INFO L242 Difference]: Finished difference. Result has 112 places, 0 transitions, 0 flow [2021-10-28 08:54:32,300 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=112, PETRI_TRANSITIONS=0} [2021-10-28 08:54:32,300 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 34 predicate places. [2021-10-28 08:54:32,300 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 0 transitions, 0 flow [2021-10-28 08:54:32,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.42857142857143) internal successors, (500), 7 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:54:32,304 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:54:32,304 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 08:54:32,305 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 08:54:32,305 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 08:54:32,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 08:54:32,309 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:54:32,312 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 08:54:32,313 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:54:32,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:54:32 BasicIcfg [2021-10-28 08:54:32,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:54:32,318 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:54:32,318 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:54:32,319 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:54:32,319 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:54:26" (3/4) ... [2021-10-28 08:54:32,323 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 08:54:32,330 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-28 08:54:32,331 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-28 08:54:32,331 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-28 08:54:32,339 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-28 08:54:32,339 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 08:54:32,340 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:54:32,340 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:54:32,418 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:54:32,418 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:54:32,421 INFO L168 Benchmark]: Toolchain (without parser) took 6708.70 ms. Allocated memory was 111.1 MB in the beginning and 163.6 MB in the end (delta: 52.4 MB). Free memory was 75.6 MB in the beginning and 111.3 MB in the end (delta: -35.7 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. [2021-10-28 08:54:32,421 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory was 62.7 MB in the beginning and 62.6 MB in the end (delta: 25.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:54:32,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 526.25 ms. Allocated memory is still 111.1 MB. Free memory was 75.4 MB in the beginning and 77.0 MB in the end (delta: -1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:54:32,423 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.29 ms. Allocated memory is still 111.1 MB. Free memory was 77.0 MB in the beginning and 75.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:54:32,423 INFO L168 Benchmark]: Boogie Preprocessor took 27.84 ms. Allocated memory is still 111.1 MB. Free memory was 75.4 MB in the beginning and 73.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:54:32,424 INFO L168 Benchmark]: RCFGBuilder took 605.71 ms. Allocated memory is still 111.1 MB. Free memory was 73.9 MB in the beginning and 61.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:54:32,427 INFO L168 Benchmark]: TraceAbstraction took 5388.94 ms. Allocated memory was 111.1 MB in the beginning and 163.6 MB in the end (delta: 52.4 MB). Free memory was 61.4 MB in the beginning and 114.5 MB in the end (delta: -53.1 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:54:32,428 INFO L168 Benchmark]: Witness Printer took 100.55 ms. Allocated memory is still 163.6 MB. Free memory was 114.5 MB in the beginning and 111.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:54:32,431 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory was 62.7 MB in the beginning and 62.6 MB in the end (delta: 25.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 526.25 ms. Allocated memory is still 111.1 MB. Free memory was 75.4 MB in the beginning and 77.0 MB in the end (delta: -1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.29 ms. Allocated memory is still 111.1 MB. Free memory was 77.0 MB in the beginning and 75.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.84 ms. Allocated memory is still 111.1 MB. Free memory was 75.4 MB in the beginning and 73.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 605.71 ms. Allocated memory is still 111.1 MB. Free memory was 73.9 MB in the beginning and 61.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5388.94 ms. Allocated memory was 111.1 MB in the beginning and 163.6 MB in the end (delta: 52.4 MB). Free memory was 61.4 MB in the beginning and 114.5 MB in the end (delta: -53.1 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * Witness Printer took 100.55 ms. Allocated memory is still 163.6 MB. Free memory was 114.5 MB in the beginning and 111.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 92 SDtfs, 231 SDslu, 283 SDs, 0 SdLazy, 348 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=538occurred in iteration=8, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 499 NumberOfCodeBlocks, 499 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 490 ConstructedInterpolants, 0 QuantifiedInterpolants, 1392 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 08:54:32,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65e9f997-3c94-4446-99c0-fc3ae628225f/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...