./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe031_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe031_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/bin/uautomizer-AkOaLMaTGY --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 26b6897a83c9df9076ea7ea4c612ce46453382fa627c0d6af54da2d169befd96 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:41:31,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:41:31,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:41:31,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:41:31,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:41:31,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:41:31,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:41:31,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:41:31,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:41:31,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:41:31,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:41:31,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:41:31,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:41:31,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:41:31,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:41:31,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:41:31,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:41:31,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:41:31,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:41:31,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:41:31,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:41:31,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:41:31,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:41:31,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:41:31,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:41:31,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:41:31,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:41:31,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:41:31,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:41:31,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:41:31,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:41:31,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:41:31,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:41:31,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:41:31,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:41:31,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:41:31,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:41:31,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:41:31,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:41:31,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:41:31,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:41:31,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 08:41:31,451 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:41:31,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:41:31,452 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:41:31,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:41:31,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:41:31,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:41:31,455 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:41:31,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:41:31,456 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:41:31,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:41:31,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:41:31,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:41:31,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:41:31,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:41:31,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:41:31,459 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:41:31,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:41:31,459 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:41:31,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:41:31,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:41:31,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:41:31,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:41:31,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:41:31,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:41:31,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:41:31,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:41:31,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:41:31,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:41:31,462 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:41:31,464 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:41:31,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:41:31,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:41:31,465 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_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26b6897a83c9df9076ea7ea4c612ce46453382fa627c0d6af54da2d169befd96 [2021-11-07 08:41:31,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:41:31,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:41:31,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:41:31,866 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:41:31,867 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:41:31,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/pthread-wmm/safe031_tso.i [2021-11-07 08:41:31,982 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/bin/uautomizer-AkOaLMaTGY/data/d8fc76b2a/bd9705ff34744bd9872cb18adca5f681/FLAG775c43b05 [2021-11-07 08:41:32,591 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:41:32,592 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/sv-benchmarks/c/pthread-wmm/safe031_tso.i [2021-11-07 08:41:32,610 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/bin/uautomizer-AkOaLMaTGY/data/d8fc76b2a/bd9705ff34744bd9872cb18adca5f681/FLAG775c43b05 [2021-11-07 08:41:32,870 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/bin/uautomizer-AkOaLMaTGY/data/d8fc76b2a/bd9705ff34744bd9872cb18adca5f681 [2021-11-07 08:41:32,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:41:32,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:41:32,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:41:32,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:41:32,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:41:32,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:41:32" (1/1) ... [2021-11-07 08:41:32,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f55579c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:32, skipping insertion in model container [2021-11-07 08:41:32,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:41:32" (1/1) ... [2021-11-07 08:41:32,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:41:32,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:41:33,262 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_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/sv-benchmarks/c/pthread-wmm/safe031_tso.i[945,958] [2021-11-07 08:41:33,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:41:33,624 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:41:33,643 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_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/sv-benchmarks/c/pthread-wmm/safe031_tso.i[945,958] [2021-11-07 08:41:33,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:41:33,777 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:41:33,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:33 WrapperNode [2021-11-07 08:41:33,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:41:33,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:41:33,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:41:33,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:41:33,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:33" (1/1) ... [2021-11-07 08:41:33,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:33" (1/1) ... [2021-11-07 08:41:33,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:41:33,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:41:33,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:41:33,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:41:33,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:33" (1/1) ... [2021-11-07 08:41:33,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:33" (1/1) ... [2021-11-07 08:41:33,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:33" (1/1) ... [2021-11-07 08:41:33,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:33" (1/1) ... [2021-11-07 08:41:33,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:33" (1/1) ... [2021-11-07 08:41:33,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:33" (1/1) ... [2021-11-07 08:41:33,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:33" (1/1) ... [2021-11-07 08:41:33,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:41:33,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:41:33,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:41:33,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:41:33,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:33" (1/1) ... [2021-11-07 08:41:33,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:41:33,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:41:34,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:41:34,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:41:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:41:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-07 08:41:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:41:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:41:34,076 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-07 08:41:34,076 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-07 08:41:34,077 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-07 08:41:34,077 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-07 08:41:34,077 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-07 08:41:34,077 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-07 08:41:34,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:41:34,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-07 08:41:34,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:41:34,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:41:34,080 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 08:41:34,510 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:41:34,510 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-07 08:41:34,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:41:34 BoogieIcfgContainer [2021-11-07 08:41:34,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:41:34,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:41:34,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:41:34,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:41:34,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:41:32" (1/3) ... [2021-11-07 08:41:34,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d435db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:41:34, skipping insertion in model container [2021-11-07 08:41:34,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:33" (2/3) ... [2021-11-07 08:41:34,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d435db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:41:34, skipping insertion in model container [2021-11-07 08:41:34,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:41:34" (3/3) ... [2021-11-07 08:41:34,526 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.i [2021-11-07 08:41:34,534 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 08:41:34,534 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:41:34,535 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 08:41:34,535 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 08:41:34,611 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,611 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,612 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,612 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,613 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,613 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,613 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,613 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,614 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,615 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,615 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,615 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,616 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,616 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,617 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,617 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,617 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,618 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,618 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,618 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,619 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,619 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,620 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,620 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,621 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,621 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,635 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,636 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,636 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,637 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,637 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,637 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,638 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,638 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,639 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,639 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,643 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,644 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,644 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,644 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,652 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,658 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,659 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,659 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,664 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,664 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,664 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,665 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:41:34,673 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-07 08:41:34,744 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:41:34,758 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 [2021-11-07 08:41:34,759 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 08:41:34,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-11-07 08:41:34,895 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-11-07 08:41:34,896 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-07 08:41:34,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 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. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-11-07 08:41:34,900 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2021-11-07 08:41:34,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2021-11-07 08:41:34,953 INFO L129 PetriNetUnfolder]: 1/67 cut-off events. [2021-11-07 08:41:34,964 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-07 08:41:34,965 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:41:34,966 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] [2021-11-07 08:41:34,967 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 08:41:34,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:41:34,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1828722178, now seen corresponding path program 1 times [2021-11-07 08:41:34,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:41:34,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609757222] [2021-11-07 08:41:34,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:41:34,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:41:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:41:35,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:41:35,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:41:35,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609757222] [2021-11-07 08:41:35,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609757222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:41:35,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:41:35,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:41:35,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128112873] [2021-11-07 08:41:35,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:41:35,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:41:35,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:41:35,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:41:35,822 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 83 [2021-11-07 08:41:35,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 145 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) [2021-11-07 08:41:35,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:41:35,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 83 [2021-11-07 08:41:35,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:41:36,093 INFO L129 PetriNetUnfolder]: 24/156 cut-off events. [2021-11-07 08:41:36,097 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-07 08:41:36,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 156 events. 24/156 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 497 event pairs, 5 based on Foata normal form. 6/159 useless extension candidates. Maximal degree in co-relation 197. Up to 31 conditions per place. [2021-11-07 08:41:36,103 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 8 selfloop transitions, 3 changer transitions 19/88 dead transitions. [2021-11-07 08:41:36,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 88 transitions, 245 flow [2021-11-07 08:41:36,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 08:41:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-07 08:41:36,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 664 transitions. [2021-11-07 08:41:36,135 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2021-11-07 08:41:36,136 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 664 transitions. [2021-11-07 08:41:36,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 664 transitions. [2021-11-07 08:41:36,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:41:36,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 664 transitions. [2021-11-07 08:41:36,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.77777777777777) internal successors, (664), 9 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:36,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:36,166 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:36,169 INFO L186 Difference]: Start difference. First operand has 77 places, 68 transitions, 145 flow. Second operand 9 states and 664 transitions. [2021-11-07 08:41:36,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 88 transitions, 245 flow [2021-11-07 08:41:36,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 88 transitions, 242 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-07 08:41:36,180 INFO L242 Difference]: Finished difference. Result has 89 places, 69 transitions, 183 flow [2021-11-07 08:41:36,183 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=183, PETRI_PLACES=89, PETRI_TRANSITIONS=69} [2021-11-07 08:41:36,185 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2021-11-07 08:41:36,185 INFO L470 AbstractCegarLoop]: Abstraction has has 89 places, 69 transitions, 183 flow [2021-11-07 08:41:36,186 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) [2021-11-07 08:41:36,186 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:41:36,187 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] [2021-11-07 08:41:36,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:41:36,187 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 08:41:36,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:41:36,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1586496931, now seen corresponding path program 1 times [2021-11-07 08:41:36,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:41:36,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387806911] [2021-11-07 08:41:36,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:41:36,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:41:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:41:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:41:36,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:41:36,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387806911] [2021-11-07 08:41:36,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387806911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:41:36,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:41:36,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:41:36,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166480353] [2021-11-07 08:41:36,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:41:36,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:41:36,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:41:36,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:41:36,416 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 83 [2021-11-07 08:41:36,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 69 transitions, 183 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) [2021-11-07 08:41:36,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:41:36,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 83 [2021-11-07 08:41:36,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:41:36,654 INFO L129 PetriNetUnfolder]: 56/229 cut-off events. [2021-11-07 08:41:36,654 INFO L130 PetriNetUnfolder]: For 242/251 co-relation queries the response was YES. [2021-11-07 08:41:36,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 229 events. 56/229 cut-off events. For 242/251 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 981 event pairs, 15 based on Foata normal form. 6/229 useless extension candidates. Maximal degree in co-relation 496. Up to 60 conditions per place. [2021-11-07 08:41:36,660 INFO L132 encePairwiseOnDemand]: 76/83 looper letters, 8 selfloop transitions, 3 changer transitions 19/90 dead transitions. [2021-11-07 08:41:36,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 303 flow [2021-11-07 08:41:36,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 08:41:36,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-07 08:41:36,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 662 transitions. [2021-11-07 08:41:36,665 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8862115127175368 [2021-11-07 08:41:36,665 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 662 transitions. [2021-11-07 08:41:36,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 662 transitions. [2021-11-07 08:41:36,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:41:36,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 662 transitions. [2021-11-07 08:41:36,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.55555555555556) internal successors, (662), 9 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:36,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:36,682 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:36,682 INFO L186 Difference]: Start difference. First operand has 89 places, 69 transitions, 183 flow. Second operand 9 states and 662 transitions. [2021-11-07 08:41:36,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 303 flow [2021-11-07 08:41:36,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 90 transitions, 286 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-11-07 08:41:36,698 INFO L242 Difference]: Finished difference. Result has 94 places, 71 transitions, 217 flow [2021-11-07 08:41:36,699 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=217, PETRI_PLACES=94, PETRI_TRANSITIONS=71} [2021-11-07 08:41:36,699 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 17 predicate places. [2021-11-07 08:41:36,700 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 71 transitions, 217 flow [2021-11-07 08:41:36,701 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) [2021-11-07 08:41:36,701 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:41:36,702 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] [2021-11-07 08:41:36,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:41:36,703 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 08:41:36,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:41:36,704 INFO L85 PathProgramCache]: Analyzing trace with hash 662476437, now seen corresponding path program 1 times [2021-11-07 08:41:36,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:41:36,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553128279] [2021-11-07 08:41:36,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:41:36,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:41:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:41:36,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:41:36,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:41:36,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553128279] [2021-11-07 08:41:36,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553128279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:41:36,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:41:36,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:41:36,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465432727] [2021-11-07 08:41:36,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:41:36,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:41:36,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:41:36,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:41:36,999 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 83 [2021-11-07 08:41:37,000 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 71 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 66.83333333333333) internal successors, (401), 6 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:37,000 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:41:37,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 83 [2021-11-07 08:41:37,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:41:37,412 INFO L129 PetriNetUnfolder]: 200/623 cut-off events. [2021-11-07 08:41:37,412 INFO L130 PetriNetUnfolder]: For 1579/1886 co-relation queries the response was YES. [2021-11-07 08:41:37,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1917 conditions, 623 events. 200/623 cut-off events. For 1579/1886 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3828 event pairs, 37 based on Foata normal form. 17/622 useless extension candidates. Maximal degree in co-relation 1874. Up to 128 conditions per place. [2021-11-07 08:41:37,425 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 20 selfloop transitions, 10 changer transitions 34/117 dead transitions. [2021-11-07 08:41:37,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 117 transitions, 685 flow [2021-11-07 08:41:37,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 08:41:37,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-07 08:41:37,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 644 transitions. [2021-11-07 08:41:37,429 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8621151271753681 [2021-11-07 08:41:37,430 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 644 transitions. [2021-11-07 08:41:37,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 644 transitions. [2021-11-07 08:41:37,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:41:37,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 644 transitions. [2021-11-07 08:41:37,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:37,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:37,441 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:37,441 INFO L186 Difference]: Start difference. First operand has 94 places, 71 transitions, 217 flow. Second operand 9 states and 644 transitions. [2021-11-07 08:41:37,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 117 transitions, 685 flow [2021-11-07 08:41:37,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 117 transitions, 652 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-11-07 08:41:37,461 INFO L242 Difference]: Finished difference. Result has 100 places, 79 transitions, 348 flow [2021-11-07 08:41:37,461 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=348, PETRI_PLACES=100, PETRI_TRANSITIONS=79} [2021-11-07 08:41:37,462 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 23 predicate places. [2021-11-07 08:41:37,462 INFO L470 AbstractCegarLoop]: Abstraction has has 100 places, 79 transitions, 348 flow [2021-11-07 08:41:37,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.83333333333333) internal successors, (401), 6 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:37,463 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:41:37,464 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] [2021-11-07 08:41:37,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:41:37,470 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 08:41:37,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:41:37,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1683393698, now seen corresponding path program 1 times [2021-11-07 08:41:37,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:41:37,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733863331] [2021-11-07 08:41:37,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:41:37,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:41:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:41:37,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:41:37,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:41:37,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733863331] [2021-11-07 08:41:37,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733863331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:41:37,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:41:37,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:41:37,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237025330] [2021-11-07 08:41:37,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:41:37,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:41:37,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:41:37,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:41:37,654 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-11-07 08:41:37,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 79 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:37,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:41:37,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-11-07 08:41:37,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:41:38,154 INFO L129 PetriNetUnfolder]: 513/1334 cut-off events. [2021-11-07 08:41:38,154 INFO L130 PetriNetUnfolder]: For 2352/2440 co-relation queries the response was YES. [2021-11-07 08:41:38,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3358 conditions, 1334 events. 513/1334 cut-off events. For 2352/2440 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 10404 event pairs, 43 based on Foata normal form. 4/1210 useless extension candidates. Maximal degree in co-relation 3311. Up to 329 conditions per place. [2021-11-07 08:41:38,218 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 24 selfloop transitions, 17 changer transitions 0/109 dead transitions. [2021-11-07 08:41:38,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 109 transitions, 490 flow [2021-11-07 08:41:38,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 08:41:38,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-07 08:41:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 733 transitions. [2021-11-07 08:41:38,223 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8831325301204819 [2021-11-07 08:41:38,223 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 733 transitions. [2021-11-07 08:41:38,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 733 transitions. [2021-11-07 08:41:38,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:41:38,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 733 transitions. [2021-11-07 08:41:38,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.3) internal successors, (733), 10 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:38,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:38,233 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:38,233 INFO L186 Difference]: Start difference. First operand has 100 places, 79 transitions, 348 flow. Second operand 10 states and 733 transitions. [2021-11-07 08:41:38,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 109 transitions, 490 flow [2021-11-07 08:41:38,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 109 transitions, 466 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-11-07 08:41:38,257 INFO L242 Difference]: Finished difference. Result has 107 places, 94 transitions, 444 flow [2021-11-07 08:41:38,257 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=444, PETRI_PLACES=107, PETRI_TRANSITIONS=94} [2021-11-07 08:41:38,257 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 30 predicate places. [2021-11-07 08:41:38,258 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 94 transitions, 444 flow [2021-11-07 08:41:38,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:38,258 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:41:38,259 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] [2021-11-07 08:41:38,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:41:38,259 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 08:41:38,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:41:38,260 INFO L85 PathProgramCache]: Analyzing trace with hash -731510117, now seen corresponding path program 1 times [2021-11-07 08:41:38,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:41:38,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373168353] [2021-11-07 08:41:38,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:41:38,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:41:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:41:38,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:41:38,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:41:38,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373168353] [2021-11-07 08:41:38,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373168353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:41:38,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:41:38,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:41:38,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602078616] [2021-11-07 08:41:38,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:41:38,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:41:38,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:41:38,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:41:38,518 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-11-07 08:41:38,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 94 transitions, 444 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:38,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:41:38,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-11-07 08:41:38,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:41:39,087 INFO L129 PetriNetUnfolder]: 430/1181 cut-off events. [2021-11-07 08:41:39,087 INFO L130 PetriNetUnfolder]: For 3181/3651 co-relation queries the response was YES. [2021-11-07 08:41:39,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4195 conditions, 1181 events. 430/1181 cut-off events. For 3181/3651 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 9572 event pairs, 12 based on Foata normal form. 142/1216 useless extension candidates. Maximal degree in co-relation 4141. Up to 419 conditions per place. [2021-11-07 08:41:39,112 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 20 selfloop transitions, 32 changer transitions 9/129 dead transitions. [2021-11-07 08:41:39,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 129 transitions, 790 flow [2021-11-07 08:41:39,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 08:41:39,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-07 08:41:39,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 954 transitions. [2021-11-07 08:41:39,117 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8841519925857275 [2021-11-07 08:41:39,118 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 954 transitions. [2021-11-07 08:41:39,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 954 transitions. [2021-11-07 08:41:39,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:41:39,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 954 transitions. [2021-11-07 08:41:39,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.38461538461539) internal successors, (954), 13 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:39,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:39,132 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:39,132 INFO L186 Difference]: Start difference. First operand has 107 places, 94 transitions, 444 flow. Second operand 13 states and 954 transitions. [2021-11-07 08:41:39,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 129 transitions, 790 flow [2021-11-07 08:41:39,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 129 transitions, 782 flow, removed 3 selfloop flow, removed 1 redundant places. [2021-11-07 08:41:39,153 INFO L242 Difference]: Finished difference. Result has 122 places, 114 transitions, 679 flow [2021-11-07 08:41:39,154 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=679, PETRI_PLACES=122, PETRI_TRANSITIONS=114} [2021-11-07 08:41:39,154 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 45 predicate places. [2021-11-07 08:41:39,154 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 114 transitions, 679 flow [2021-11-07 08:41:39,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:39,155 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:41:39,155 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] [2021-11-07 08:41:39,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 08:41:39,156 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 08:41:39,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:41:39,157 INFO L85 PathProgramCache]: Analyzing trace with hash -880755332, now seen corresponding path program 1 times [2021-11-07 08:41:39,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:41:39,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296498457] [2021-11-07 08:41:39,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:41:39,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:41:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:41:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:41:39,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:41:39,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296498457] [2021-11-07 08:41:39,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296498457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:41:39,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:41:39,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:41:39,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722705660] [2021-11-07 08:41:39,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:41:39,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:41:39,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:41:39,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:41:39,395 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2021-11-07 08:41:39,397 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 114 transitions, 679 flow. Second operand has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:39,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:41:39,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2021-11-07 08:41:39,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:41:39,952 INFO L129 PetriNetUnfolder]: 308/1242 cut-off events. [2021-11-07 08:41:39,952 INFO L130 PetriNetUnfolder]: For 3888/4210 co-relation queries the response was YES. [2021-11-07 08:41:39,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4275 conditions, 1242 events. 308/1242 cut-off events. For 3888/4210 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 11173 event pairs, 1 based on Foata normal form. 20/1192 useless extension candidates. Maximal degree in co-relation 4212. Up to 305 conditions per place. [2021-11-07 08:41:39,980 INFO L132 encePairwiseOnDemand]: 72/83 looper letters, 32 selfloop transitions, 20 changer transitions 22/157 dead transitions. [2021-11-07 08:41:39,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 157 transitions, 1205 flow [2021-11-07 08:41:39,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 08:41:39,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-07 08:41:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 752 transitions. [2021-11-07 08:41:39,985 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.823658269441402 [2021-11-07 08:41:39,986 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 752 transitions. [2021-11-07 08:41:39,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 752 transitions. [2021-11-07 08:41:39,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:41:39,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 752 transitions. [2021-11-07 08:41:39,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 68.36363636363636) internal successors, (752), 11 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:39,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 83.0) internal successors, (996), 12 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:40,000 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 83.0) internal successors, (996), 12 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:40,000 INFO L186 Difference]: Start difference. First operand has 122 places, 114 transitions, 679 flow. Second operand 11 states and 752 transitions. [2021-11-07 08:41:40,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 157 transitions, 1205 flow [2021-11-07 08:41:40,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 157 transitions, 1067 flow, removed 56 selfloop flow, removed 9 redundant places. [2021-11-07 08:41:40,087 INFO L242 Difference]: Finished difference. Result has 132 places, 124 transitions, 747 flow [2021-11-07 08:41:40,088 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=747, PETRI_PLACES=132, PETRI_TRANSITIONS=124} [2021-11-07 08:41:40,089 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 55 predicate places. [2021-11-07 08:41:40,089 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 124 transitions, 747 flow [2021-11-07 08:41:40,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:40,090 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:41:40,090 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] [2021-11-07 08:41:40,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 08:41:40,092 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 08:41:40,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:41:40,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1623032284, now seen corresponding path program 1 times [2021-11-07 08:41:40,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:41:40,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469675704] [2021-11-07 08:41:40,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:41:40,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:41:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:41:40,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:41:40,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:41:40,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469675704] [2021-11-07 08:41:40,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469675704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:41:40,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:41:40,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:41:40,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306412033] [2021-11-07 08:41:40,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:41:40,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:41:40,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:41:40,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:41:40,297 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 83 [2021-11-07 08:41:40,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 124 transitions, 747 flow. Second operand has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:40,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:41:40,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 83 [2021-11-07 08:41:40,299 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:41:40,748 INFO L129 PetriNetUnfolder]: 377/1517 cut-off events. [2021-11-07 08:41:40,749 INFO L130 PetriNetUnfolder]: For 2791/3225 co-relation queries the response was YES. [2021-11-07 08:41:40,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4143 conditions, 1517 events. 377/1517 cut-off events. For 2791/3225 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14944 event pairs, 17 based on Foata normal form. 23/1449 useless extension candidates. Maximal degree in co-relation 4077. Up to 177 conditions per place. [2021-11-07 08:41:40,776 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 29 selfloop transitions, 20 changer transitions 7/142 dead transitions. [2021-11-07 08:41:40,776 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 142 transitions, 1055 flow [2021-11-07 08:41:40,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:41:40,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-07 08:41:40,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 493 transitions. [2021-11-07 08:41:40,780 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8485370051635112 [2021-11-07 08:41:40,781 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 493 transitions. [2021-11-07 08:41:40,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 493 transitions. [2021-11-07 08:41:40,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:41:40,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 493 transitions. [2021-11-07 08:41:40,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:40,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:40,793 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:40,794 INFO L186 Difference]: Start difference. First operand has 132 places, 124 transitions, 747 flow. Second operand 7 states and 493 transitions. [2021-11-07 08:41:40,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 142 transitions, 1055 flow [2021-11-07 08:41:40,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 142 transitions, 993 flow, removed 31 selfloop flow, removed 6 redundant places. [2021-11-07 08:41:40,853 INFO L242 Difference]: Finished difference. Result has 132 places, 127 transitions, 847 flow [2021-11-07 08:41:40,854 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=847, PETRI_PLACES=132, PETRI_TRANSITIONS=127} [2021-11-07 08:41:40,855 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 55 predicate places. [2021-11-07 08:41:40,855 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 127 transitions, 847 flow [2021-11-07 08:41:40,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:40,856 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:41:40,856 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] [2021-11-07 08:41:40,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 08:41:40,857 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 08:41:40,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:41:40,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1267776450, now seen corresponding path program 2 times [2021-11-07 08:41:40,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:41:40,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042647584] [2021-11-07 08:41:40,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:41:40,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:41:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:41:41,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:41:41,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:41:41,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042647584] [2021-11-07 08:41:41,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042647584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:41:41,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:41:41,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:41:41,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581581068] [2021-11-07 08:41:41,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:41:41,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:41:41,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:41:41,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:41:41,018 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-11-07 08:41:41,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 127 transitions, 847 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:41,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:41:41,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-11-07 08:41:41,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:41:41,747 INFO L129 PetriNetUnfolder]: 588/1656 cut-off events. [2021-11-07 08:41:41,748 INFO L130 PetriNetUnfolder]: For 3129/4020 co-relation queries the response was YES. [2021-11-07 08:41:41,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5492 conditions, 1656 events. 588/1656 cut-off events. For 3129/4020 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 15992 event pairs, 1 based on Foata normal form. 248/1739 useless extension candidates. Maximal degree in co-relation 5460. Up to 294 conditions per place. [2021-11-07 08:41:41,776 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 0 selfloop transitions, 0 changer transitions 135/135 dead transitions. [2021-11-07 08:41:41,777 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 135 transitions, 978 flow [2021-11-07 08:41:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 08:41:41,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-11-07 08:41:41,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1085 transitions. [2021-11-07 08:41:41,783 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8714859437751004 [2021-11-07 08:41:41,784 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1085 transitions. [2021-11-07 08:41:41,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1085 transitions. [2021-11-07 08:41:41,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:41:41,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1085 transitions. [2021-11-07 08:41:41,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 72.33333333333333) internal successors, (1085), 15 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:41,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 83.0) internal successors, (1328), 16 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:41,798 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 83.0) internal successors, (1328), 16 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:41,798 INFO L186 Difference]: Start difference. First operand has 132 places, 127 transitions, 847 flow. Second operand 15 states and 1085 transitions. [2021-11-07 08:41:41,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 135 transitions, 978 flow [2021-11-07 08:41:41,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 135 transitions, 847 flow, removed 50 selfloop flow, removed 14 redundant places. [2021-11-07 08:41:41,848 INFO L242 Difference]: Finished difference. Result has 122 places, 0 transitions, 0 flow [2021-11-07 08:41:41,848 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=122, PETRI_TRANSITIONS=0} [2021-11-07 08:41:41,849 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 45 predicate places. [2021-11-07 08:41:41,849 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 0 transitions, 0 flow [2021-11-07 08:41:41,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:41:41,853 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:41:41,854 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-07 08:41:41,854 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-07 08:41:41,855 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-11-07 08:41:41,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 08:41:41,859 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2021-11-07 08:41:41,863 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-07 08:41:41,863 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 08:41:41,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:41:41 BasicIcfg [2021-11-07 08:41:41,867 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 08:41:41,868 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 08:41:41,868 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 08:41:41,868 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 08:41:41,869 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:41:34" (3/4) ... [2021-11-07 08:41:41,873 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 08:41:41,882 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-11-07 08:41:41,883 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-11-07 08:41:41,883 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-11-07 08:41:41,889 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-11-07 08:41:41,890 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-07 08:41:41,890 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 08:41:41,891 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 08:41:41,935 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/bin/uautomizer-AkOaLMaTGY/witness.graphml [2021-11-07 08:41:41,935 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 08:41:41,937 INFO L168 Benchmark]: Toolchain (without parser) took 9061.04 ms. Allocated memory was 94.4 MB in the beginning and 211.8 MB in the end (delta: 117.4 MB). Free memory was 57.9 MB in the beginning and 89.8 MB in the end (delta: -31.8 MB). Peak memory consumption was 86.6 MB. Max. memory is 16.1 GB. [2021-11-07 08:41:41,938 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 94.4 MB. Free memory was 67.1 MB in the beginning and 67.0 MB in the end (delta: 21.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:41:41,938 INFO L168 Benchmark]: CACSL2BoogieTranslator took 889.99 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 57.7 MB in the beginning and 84.9 MB in the end (delta: -27.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 08:41:41,939 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.02 ms. Allocated memory is still 121.6 MB. Free memory was 84.9 MB in the beginning and 83.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:41:41,939 INFO L168 Benchmark]: Boogie Preprocessor took 59.91 ms. Allocated memory is still 121.6 MB. Free memory was 83.5 MB in the beginning and 82.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:41:41,940 INFO L168 Benchmark]: RCFGBuilder took 566.86 ms. Allocated memory is still 121.6 MB. Free memory was 82.2 MB in the beginning and 69.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 08:41:41,941 INFO L168 Benchmark]: TraceAbstraction took 7350.78 ms. Allocated memory was 121.6 MB in the beginning and 211.8 MB in the end (delta: 90.2 MB). Free memory was 69.6 MB in the beginning and 91.9 MB in the end (delta: -22.3 MB). Peak memory consumption was 70.3 MB. Max. memory is 16.1 GB. [2021-11-07 08:41:41,941 INFO L168 Benchmark]: Witness Printer took 67.50 ms. Allocated memory is still 211.8 MB. Free memory was 91.9 MB in the beginning and 89.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:41:41,945 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 94.4 MB. Free memory was 67.1 MB in the beginning and 67.0 MB in the end (delta: 21.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 889.99 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 57.7 MB in the beginning and 84.9 MB in the end (delta: -27.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 105.02 ms. Allocated memory is still 121.6 MB. Free memory was 84.9 MB in the beginning and 83.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.91 ms. Allocated memory is still 121.6 MB. Free memory was 83.5 MB in the beginning and 82.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 566.86 ms. Allocated memory is still 121.6 MB. Free memory was 82.2 MB in the beginning and 69.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7350.78 ms. Allocated memory was 121.6 MB in the beginning and 211.8 MB in the end (delta: 90.2 MB). Free memory was 69.6 MB in the beginning and 91.9 MB in the end (delta: -22.3 MB). Peak memory consumption was 70.3 MB. Max. memory is 16.1 GB. * Witness Printer took 67.50 ms. Allocated memory is still 211.8 MB. Free memory was 91.9 MB in the beginning and 89.8 MB in the end (delta: 2.1 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, 106 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: 7.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 119 SDtfs, 265 SDslu, 360 SDs, 0 SdLazy, 334 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=847occurred in iteration=7, InterpolantAutomatonStates: 83, 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, 0.4s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 423 NumberOfCodeBlocks, 423 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 415 ConstructedInterpolants, 0 QuantifiedInterpolants, 1337 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2021-11-07 08:41:42,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057ba00d-1b8e-47f8-a7ab-5e87c1c14f13/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE