./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19343c26-032d-4780-a717-79b7679a6972/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19343c26-032d-4780-a717-79b7679a6972/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19343c26-032d-4780-a717-79b7679a6972/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19343c26-032d-4780-a717-79b7679a6972/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19343c26-032d-4780-a717-79b7679a6972/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19343c26-032d-4780-a717-79b7679a6972/bin/uautomizer-wIGwrQj20G --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 75c86508b929748d0860a2261aae2f86897f25a70c1055933792f6abb004bc7e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:08:24,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:08:24,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:08:25,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:08:25,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:08:25,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:08:25,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:08:25,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:08:25,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:08:25,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:08:25,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:08:25,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:08:25,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:08:25,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:08:25,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:08:25,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:08:25,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:08:25,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:08:25,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:08:25,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:08:25,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:08:25,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:08:25,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:08:25,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:08:25,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:08:25,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:08:25,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:08:25,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:08:25,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:08:25,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:08:25,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:08:25,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:08:25,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:08:25,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:08:25,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:08:25,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:08:25,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:08:25,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:08:25,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:08:25,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:08:25,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:08:25,122 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19343c26-032d-4780-a717-79b7679a6972/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:08:25,167 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:08:25,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:08:25,168 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:08:25,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:08:25,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:08:25,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:08:25,177 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:08:25,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:08:25,177 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:08:25,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:08:25,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:08:25,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:08:25,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:08:25,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:08:25,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:08:25,180 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:08:25,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:08:25,180 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:08:25,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:08:25,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:08:25,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:08:25,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:08:25,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:08:25,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:08:25,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:08:25,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:08:25,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:08:25,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:08:25,183 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:08:25,184 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:08:25,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:08:25,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:08:25,185 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_19343c26-032d-4780-a717-79b7679a6972/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19343c26-032d-4780-a717-79b7679a6972/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75c86508b929748d0860a2261aae2f86897f25a70c1055933792f6abb004bc7e [2021-11-23 13:08:25,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:08:25,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:08:25,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:08:25,496 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:08:25,497 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:08:25,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19343c26-032d-4780-a717-79b7679a6972/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c [2021-11-23 13:08:25,576 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19343c26-032d-4780-a717-79b7679a6972/bin/uautomizer-wIGwrQj20G/data/3da774a2d/a0a7b4f9fed74c87beb342ae6046f92a/FLAG38526b30f [2021-11-23 13:08:26,119 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:08:26,121 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19343c26-032d-4780-a717-79b7679a6972/sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c [2021-11-23 13:08:26,134 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19343c26-032d-4780-a717-79b7679a6972/bin/uautomizer-wIGwrQj20G/data/3da774a2d/a0a7b4f9fed74c87beb342ae6046f92a/FLAG38526b30f [2021-11-23 13:08:26,453 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19343c26-032d-4780-a717-79b7679a6972/bin/uautomizer-wIGwrQj20G/data/3da774a2d/a0a7b4f9fed74c87beb342ae6046f92a [2021-11-23 13:08:26,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:08:26,457 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:08:26,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:08:26,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:08:26,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:08:26,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:08:26" (1/1) ... [2021-11-23 13:08:26,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@409ed113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:26, skipping insertion in model container [2021-11-23 13:08:26,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:08:26" (1/1) ... [2021-11-23 13:08:26,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:08:26,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:08:26,724 WARN L230 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_19343c26-032d-4780-a717-79b7679a6972/sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c[3134,3147] [2021-11-23 13:08:26,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:08:26,738 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:08:26,764 WARN L230 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_19343c26-032d-4780-a717-79b7679a6972/sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c[3134,3147] [2021-11-23 13:08:26,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:08:26,781 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:08:26,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:26 WrapperNode [2021-11-23 13:08:26,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:08:26,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:08:26,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:08:26,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:08:26,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:26" (1/1) ... [2021-11-23 13:08:26,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:26" (1/1) ... [2021-11-23 13:08:26,851 INFO L137 Inliner]: procedures = 21, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 119 [2021-11-23 13:08:26,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:08:26,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:08:26,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:08:26,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:08:26,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:26" (1/1) ... [2021-11-23 13:08:26,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:26" (1/1) ... [2021-11-23 13:08:26,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:26" (1/1) ... [2021-11-23 13:08:26,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:26" (1/1) ... [2021-11-23 13:08:26,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:26" (1/1) ... [2021-11-23 13:08:26,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:26" (1/1) ... [2021-11-23 13:08:26,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:26" (1/1) ... [2021-11-23 13:08:26,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:08:26,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:08:26,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:08:26,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:08:26,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:26" (1/1) ... [2021-11-23 13:08:26,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:08:26,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19343c26-032d-4780-a717-79b7679a6972/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:08:26,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19343c26-032d-4780-a717-79b7679a6972/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:08:26,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19343c26-032d-4780-a717-79b7679a6972/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:08:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:08:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-23 13:08:26,977 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-23 13:08:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-23 13:08:26,978 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-23 13:08:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:08:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:08:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:08:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-23 13:08:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-23 13:08:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:08:26,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:08:26,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:08:26,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:08:26,980 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-23 13:08:27,066 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:08:27,069 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:08:27,381 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:08:27,443 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:08:27,443 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 13:08:27,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:08:27 BoogieIcfgContainer [2021-11-23 13:08:27,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:08:27,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:08:27,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:08:27,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:08:27,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:08:26" (1/3) ... [2021-11-23 13:08:27,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5b81bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:08:27, skipping insertion in model container [2021-11-23 13:08:27,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:26" (2/3) ... [2021-11-23 13:08:27,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5b81bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:08:27, skipping insertion in model container [2021-11-23 13:08:27,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:08:27" (3/3) ... [2021-11-23 13:08:27,454 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-bluetooth.wvr.c [2021-11-23 13:08:27,461 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-23 13:08:27,461 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:08:27,461 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 13:08:27,461 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-23 13:08:27,528 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,528 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,529 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,529 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,530 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,530 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,530 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,533 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,534 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,534 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,537 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,539 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,539 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,539 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,540 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,540 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,540 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,541 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,542 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,542 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,545 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,545 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,545 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,546 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,547 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,547 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,549 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,549 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,556 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,557 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,557 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,558 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,558 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,562 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,562 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,577 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,577 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,577 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,578 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,578 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:08:27,588 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-23 13:08:27,674 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:08:27,682 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 [2021-11-23 13:08:27,682 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 13:08:27,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 137 places, 139 transitions, 294 flow [2021-11-23 13:08:27,772 INFO L129 PetriNetUnfolder]: 9/137 cut-off events. [2021-11-23 13:08:27,772 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-23 13:08:27,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 137 events. 9/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2021-11-23 13:08:27,785 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 139 transitions, 294 flow [2021-11-23 13:08:27,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 128 transitions, 268 flow [2021-11-23 13:08:27,864 INFO L129 PetriNetUnfolder]: 9/127 cut-off events. [2021-11-23 13:08:27,864 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-23 13:08:27,864 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:08:27,865 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:08:27,866 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 13:08:27,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:27,871 INFO L85 PathProgramCache]: Analyzing trace with hash -832133839, now seen corresponding path program 1 times [2021-11-23 13:08:27,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:08:27,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577423007] [2021-11-23 13:08:27,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:27,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:08:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:28,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:08:28,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:08:28,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577423007] [2021-11-23 13:08:28,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577423007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:28,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:28,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:08:28,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773651309] [2021-11-23 13:08:28,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:28,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:08:28,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:08:28,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:08:28,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:08:28,511 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 139 [2021-11-23 13:08:28,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 128 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:28,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:08:28,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 139 [2021-11-23 13:08:28,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:08:28,838 INFO L129 PetriNetUnfolder]: 29/235 cut-off events. [2021-11-23 13:08:28,839 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2021-11-23 13:08:28,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 235 events. 29/235 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 597 event pairs, 4 based on Foata normal form. 8/221 useless extension candidates. Maximal degree in co-relation 179. Up to 38 conditions per place. [2021-11-23 13:08:28,845 INFO L132 encePairwiseOnDemand]: 120/139 looper letters, 43 selfloop transitions, 1 changer transitions 18/134 dead transitions. [2021-11-23 13:08:28,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 134 transitions, 413 flow [2021-11-23 13:08:28,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:08:28,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-23 13:08:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 727 transitions. [2021-11-23 13:08:28,875 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6537769784172662 [2021-11-23 13:08:28,879 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 727 transitions. [2021-11-23 13:08:28,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 727 transitions. [2021-11-23 13:08:28,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:08:28,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 727 transitions. [2021-11-23 13:08:28,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 90.875) internal successors, (727), 8 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:28,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 139.0) internal successors, (1251), 9 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:28,909 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 139.0) internal successors, (1251), 9 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:28,911 INFO L186 Difference]: Start difference. First operand has 126 places, 128 transitions, 268 flow. Second operand 8 states and 727 transitions. [2021-11-23 13:08:28,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 134 transitions, 413 flow [2021-11-23 13:08:28,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 134 transitions, 399 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-23 13:08:28,929 INFO L242 Difference]: Finished difference. Result has 133 places, 114 transitions, 243 flow [2021-11-23 13:08:28,931 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=243, PETRI_PLACES=133, PETRI_TRANSITIONS=114} [2021-11-23 13:08:28,936 INFO L334 CegarLoopForPetriNet]: 126 programPoint places, 7 predicate places. [2021-11-23 13:08:28,936 INFO L470 AbstractCegarLoop]: Abstraction has has 133 places, 114 transitions, 243 flow [2021-11-23 13:08:28,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:28,937 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:08:28,938 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:08:28,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:08:28,938 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 13:08:28,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:28,940 INFO L85 PathProgramCache]: Analyzing trace with hash 99730787, now seen corresponding path program 2 times [2021-11-23 13:08:28,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:08:28,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631896462] [2021-11-23 13:08:28,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:28,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:08:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:29,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:08:29,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:08:29,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631896462] [2021-11-23 13:08:29,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631896462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:29,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:29,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:08:29,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932332426] [2021-11-23 13:08:29,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:29,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:08:29,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:08:29,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:08:29,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:08:29,225 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 139 [2021-11-23 13:08:29,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 114 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:29,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:08:29,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 139 [2021-11-23 13:08:29,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:08:29,364 INFO L129 PetriNetUnfolder]: 22/206 cut-off events. [2021-11-23 13:08:29,364 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-11-23 13:08:29,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 206 events. 22/206 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 499 event pairs, 6 based on Foata normal form. 4/198 useless extension candidates. Maximal degree in co-relation 298. Up to 52 conditions per place. [2021-11-23 13:08:29,367 INFO L132 encePairwiseOnDemand]: 131/139 looper letters, 41 selfloop transitions, 7 changer transitions 0/121 dead transitions. [2021-11-23 13:08:29,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 121 transitions, 355 flow [2021-11-23 13:08:29,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:08:29,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-23 13:08:29,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 464 transitions. [2021-11-23 13:08:29,370 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6676258992805756 [2021-11-23 13:08:29,370 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 464 transitions. [2021-11-23 13:08:29,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 464 transitions. [2021-11-23 13:08:29,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:08:29,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 464 transitions. [2021-11-23 13:08:29,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:29,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:29,375 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:29,376 INFO L186 Difference]: Start difference. First operand has 133 places, 114 transitions, 243 flow. Second operand 5 states and 464 transitions. [2021-11-23 13:08:29,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 121 transitions, 355 flow [2021-11-23 13:08:29,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 121 transitions, 348 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-11-23 13:08:29,385 INFO L242 Difference]: Finished difference. Result has 122 places, 116 transitions, 265 flow [2021-11-23 13:08:29,385 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=122, PETRI_TRANSITIONS=116} [2021-11-23 13:08:29,388 INFO L334 CegarLoopForPetriNet]: 126 programPoint places, -4 predicate places. [2021-11-23 13:08:29,388 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 116 transitions, 265 flow [2021-11-23 13:08:29,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:29,389 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:08:29,389 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:08:29,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:08:29,390 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 13:08:29,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:29,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1429576370, now seen corresponding path program 1 times [2021-11-23 13:08:29,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:08:29,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478068972] [2021-11-23 13:08:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:29,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:08:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:08:29,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:08:29,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478068972] [2021-11-23 13:08:29,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478068972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:29,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:29,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 13:08:29,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086591005] [2021-11-23 13:08:29,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:29,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 13:08:29,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:08:29,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 13:08:29,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:08:29,830 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 139 [2021-11-23 13:08:29,832 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 116 transitions, 265 flow. Second operand has 12 states, 12 states have (on average 82.58333333333333) internal successors, (991), 12 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:29,832 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:08:29,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 139 [2021-11-23 13:08:29,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:08:30,254 INFO L129 PetriNetUnfolder]: 48/301 cut-off events. [2021-11-23 13:08:30,254 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2021-11-23 13:08:30,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 301 events. 48/301 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1135 event pairs, 0 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 339. Up to 31 conditions per place. [2021-11-23 13:08:30,257 INFO L132 encePairwiseOnDemand]: 125/139 looper letters, 57 selfloop transitions, 17 changer transitions 19/162 dead transitions. [2021-11-23 13:08:30,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 162 transitions, 556 flow [2021-11-23 13:08:30,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 13:08:30,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-11-23 13:08:30,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1283 transitions. [2021-11-23 13:08:30,263 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6153477218225419 [2021-11-23 13:08:30,263 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1283 transitions. [2021-11-23 13:08:30,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1283 transitions. [2021-11-23 13:08:30,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:08:30,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1283 transitions. [2021-11-23 13:08:30,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 85.53333333333333) internal successors, (1283), 15 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:30,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 139.0) internal successors, (2224), 16 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:30,292 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 139.0) internal successors, (2224), 16 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:30,292 INFO L186 Difference]: Start difference. First operand has 122 places, 116 transitions, 265 flow. Second operand 15 states and 1283 transitions. [2021-11-23 13:08:30,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 162 transitions, 556 flow [2021-11-23 13:08:30,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 162 transitions, 542 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-23 13:08:30,302 INFO L242 Difference]: Finished difference. Result has 139 places, 122 transitions, 322 flow [2021-11-23 13:08:30,302 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=322, PETRI_PLACES=139, PETRI_TRANSITIONS=122} [2021-11-23 13:08:30,305 INFO L334 CegarLoopForPetriNet]: 126 programPoint places, 13 predicate places. [2021-11-23 13:08:30,306 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 122 transitions, 322 flow [2021-11-23 13:08:30,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 82.58333333333333) internal successors, (991), 12 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:30,310 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:08:30,311 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:08:30,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:08:30,311 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 13:08:30,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:30,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1476542765, now seen corresponding path program 1 times [2021-11-23 13:08:30,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:08:30,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408170266] [2021-11-23 13:08:30,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:30,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:08:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:30,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:08:30,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:08:30,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408170266] [2021-11-23 13:08:30,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408170266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:30,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:30,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 13:08:30,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867139365] [2021-11-23 13:08:30,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:30,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:08:30,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:08:30,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:08:30,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:08:30,540 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 139 [2021-11-23 13:08:30,541 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 122 transitions, 322 flow. Second operand has 8 states, 8 states have (on average 87.25) internal successors, (698), 8 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:30,541 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:08:30,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 139 [2021-11-23 13:08:30,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:08:30,721 INFO L129 PetriNetUnfolder]: 16/213 cut-off events. [2021-11-23 13:08:30,722 INFO L130 PetriNetUnfolder]: For 56/59 co-relation queries the response was YES. [2021-11-23 13:08:30,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 213 events. 16/213 cut-off events. For 56/59 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 573 event pairs, 8 based on Foata normal form. 2/210 useless extension candidates. Maximal degree in co-relation 321. Up to 38 conditions per place. [2021-11-23 13:08:30,723 INFO L132 encePairwiseOnDemand]: 129/139 looper letters, 0 selfloop transitions, 0 changer transitions 122/122 dead transitions. [2021-11-23 13:08:30,723 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 122 transitions, 425 flow [2021-11-23 13:08:30,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:08:30,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-23 13:08:30,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 783 transitions. [2021-11-23 13:08:30,726 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6258992805755396 [2021-11-23 13:08:30,726 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 783 transitions. [2021-11-23 13:08:30,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 783 transitions. [2021-11-23 13:08:30,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:08:30,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 783 transitions. [2021-11-23 13:08:30,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:30,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:30,733 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:30,733 INFO L186 Difference]: Start difference. First operand has 139 places, 122 transitions, 322 flow. Second operand 9 states and 783 transitions. [2021-11-23 13:08:30,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 122 transitions, 425 flow [2021-11-23 13:08:30,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 122 transitions, 412 flow, removed 2 selfloop flow, removed 6 redundant places. [2021-11-23 13:08:30,738 INFO L242 Difference]: Finished difference. Result has 135 places, 0 transitions, 0 flow [2021-11-23 13:08:30,738 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=135, PETRI_TRANSITIONS=0} [2021-11-23 13:08:30,739 INFO L334 CegarLoopForPetriNet]: 126 programPoint places, 9 predicate places. [2021-11-23 13:08:30,739 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 0 transitions, 0 flow [2021-11-23 13:08:30,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.25) internal successors, (698), 8 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:30,743 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-23 13:08:30,743 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-11-23 13:08:30,744 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-11-23 13:08:30,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:08:30,748 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2021-11-23 13:08:30,750 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-23 13:08:30,751 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 13:08:30,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:08:30 BasicIcfg [2021-11-23 13:08:30,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 13:08:30,755 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:08:30,756 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:08:30,756 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:08:30,756 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:08:27" (3/4) ... [2021-11-23 13:08:30,759 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 13:08:30,765 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-11-23 13:08:30,765 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-11-23 13:08:30,771 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-11-23 13:08:30,771 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-23 13:08:30,772 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 13:08:30,772 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 13:08:30,817 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19343c26-032d-4780-a717-79b7679a6972/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 13:08:30,818 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:08:30,818 INFO L158 Benchmark]: Toolchain (without parser) took 4361.66ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 53.8MB in the beginning and 61.8MB in the end (delta: -8.0MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. [2021-11-23 13:08:30,823 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 90.2MB. Free memory was 70.2MB in the beginning and 70.1MB in the end (delta: 42.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:08:30,824 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.81ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.5MB in the beginning and 83.5MB in the end (delta: -29.9MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-11-23 13:08:30,824 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.94ms. Allocated memory is still 109.1MB. Free memory was 83.2MB in the beginning and 81.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:08:30,824 INFO L158 Benchmark]: Boogie Preprocessor took 40.48ms. Allocated memory is still 109.1MB. Free memory was 81.4MB in the beginning and 80.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:08:30,825 INFO L158 Benchmark]: RCFGBuilder took 552.05ms. Allocated memory is still 109.1MB. Free memory was 80.2MB in the beginning and 64.9MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 13:08:30,825 INFO L158 Benchmark]: TraceAbstraction took 3306.94ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 64.4MB in the beginning and 65.0MB in the end (delta: -601.9kB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2021-11-23 13:08:30,826 INFO L158 Benchmark]: Witness Printer took 62.51ms. Allocated memory is still 132.1MB. Free memory was 65.0MB in the beginning and 61.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 13:08:30,828 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 90.2MB. Free memory was 70.2MB in the beginning and 70.1MB in the end (delta: 42.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 323.81ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.5MB in the beginning and 83.5MB in the end (delta: -29.9MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.94ms. Allocated memory is still 109.1MB. Free memory was 83.2MB in the beginning and 81.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.48ms. Allocated memory is still 109.1MB. Free memory was 81.4MB in the beginning and 80.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 552.05ms. Allocated memory is still 109.1MB. Free memory was 80.2MB in the beginning and 64.9MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3306.94ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 64.4MB in the beginning and 65.0MB in the end (delta: -601.9kB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. * Witness Printer took 62.51ms. Allocated memory is still 132.1MB. Free memory was 65.0MB in the beginning and 61.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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: 115]: 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 5 procedures, 152 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 236 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 236 mSDsluCounter, 463 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 460 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 510 IncrementalHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 142 mSDtfsCounter, 510 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=322occurred in iteration=3, InterpolantAutomatonStates: 37, 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, 1.0s InterpolantComputationTime, 442 NumberOfCodeBlocks, 442 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 438 ConstructedInterpolants, 0 QuantifiedInterpolants, 1515 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [2021-11-23 13:08:30,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19343c26-032d-4780-a717-79b7679a6972/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE