./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-1_1-join.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055242c5-4f79-4443-8a89-87e04da75a91/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055242c5-4f79-4443-8a89-87e04da75a91/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055242c5-4f79-4443-8a89-87e04da75a91/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055242c5-4f79-4443-8a89-87e04da75a91/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-1_1-join.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055242c5-4f79-4443-8a89-87e04da75a91/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055242c5-4f79-4443-8a89-87e04da75a91/bin/uautomizer-hJ6jxDFKc3 --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 3f78296dc1cf80b4adc36195bb88732ccad57c55 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:40:43,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:40:43,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:40:43,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:40:43,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:40:43,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:40:43,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:40:43,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:40:43,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:40:43,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:40:43,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:40:43,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:40:43,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:40:43,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:40:43,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:40:43,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:40:43,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:40:43,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:40:43,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:40:43,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:40:43,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:40:43,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:40:43,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:40:43,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:40:43,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:40:43,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:40:43,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:40:43,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:40:43,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:40:43,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:40:43,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:40:43,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:40:43,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:40:43,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:40:43,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:40:43,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:40:43,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:40:43,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:40:43,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:40:43,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:40:43,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:40:43,780 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055242c5-4f79-4443-8a89-87e04da75a91/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:40:43,833 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:40:43,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:40:43,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:40:43,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:40:43,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:40:43,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:40:43,844 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:40:43,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:40:43,845 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:40:43,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:40:43,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:40:43,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:40:43,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:40:43,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:40:43,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:40:43,848 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:40:43,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:40:43,849 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:40:43,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:40:43,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:40:43,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:40:43,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:40:43,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:40:43,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:40:43,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:40:43,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:40:43,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:40:43,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:40:43,852 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:40:43,853 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:40:43,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:40:43,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:40:43,854 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_055242c5-4f79-4443-8a89-87e04da75a91/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055242c5-4f79-4443-8a89-87e04da75a91/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f78296dc1cf80b4adc36195bb88732ccad57c55 [2021-10-15 19:40:44,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:40:44,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:40:44,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:40:44,211 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:40:44,211 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:40:44,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055242c5-4f79-4443-8a89-87e04da75a91/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/ldv-races/race-1_1-join.i [2021-10-15 19:40:44,289 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055242c5-4f79-4443-8a89-87e04da75a91/bin/uautomizer-hJ6jxDFKc3/data/28e697743/8cad31eaf2204745937c03e816f532a8/FLAG0257ec574 [2021-10-15 19:40:45,067 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:40:45,069 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055242c5-4f79-4443-8a89-87e04da75a91/sv-benchmarks/c/ldv-races/race-1_1-join.i [2021-10-15 19:40:45,110 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055242c5-4f79-4443-8a89-87e04da75a91/bin/uautomizer-hJ6jxDFKc3/data/28e697743/8cad31eaf2204745937c03e816f532a8/FLAG0257ec574 [2021-10-15 19:40:45,187 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055242c5-4f79-4443-8a89-87e04da75a91/bin/uautomizer-hJ6jxDFKc3/data/28e697743/8cad31eaf2204745937c03e816f532a8 [2021-10-15 19:40:45,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:40:45,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:40:45,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:40:45,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:40:45,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:40:45,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:40:45" (1/1) ... [2021-10-15 19:40:45,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cce20ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:45, skipping insertion in model container [2021-10-15 19:40:45,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:40:45" (1/1) ... [2021-10-15 19:40:45,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:40:45,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:40:46,231 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_055242c5-4f79-4443-8a89-87e04da75a91/sv-benchmarks/c/ldv-races/race-1_1-join.i[76068,76081] [2021-10-15 19:40:46,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:40:46,275 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:40:46,338 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_055242c5-4f79-4443-8a89-87e04da75a91/sv-benchmarks/c/ldv-races/race-1_1-join.i[76068,76081] [2021-10-15 19:40:46,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:40:46,528 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:40:46,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:46 WrapperNode [2021-10-15 19:40:46,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:40:46,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:40:46,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:40:46,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:40:46,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:46" (1/1) ... [2021-10-15 19:40:46,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:46" (1/1) ... [2021-10-15 19:40:46,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:40:46,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:40:46,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:40:46,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:40:46,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:46" (1/1) ... [2021-10-15 19:40:46,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:46" (1/1) ... [2021-10-15 19:40:46,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:46" (1/1) ... [2021-10-15 19:40:46,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:46" (1/1) ... [2021-10-15 19:40:46,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:46" (1/1) ... [2021-10-15 19:40:46,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:46" (1/1) ... [2021-10-15 19:40:46,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:46" (1/1) ... [2021-10-15 19:40:46,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:40:46,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:40:46,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:40:46,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:40:46,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:46" (1/1) ... [2021-10-15 19:40:46,713 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:40:46,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055242c5-4f79-4443-8a89-87e04da75a91/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:40:46,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055242c5-4f79-4443-8a89-87e04da75a91/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:40:46,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055242c5-4f79-4443-8a89-87e04da75a91/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:40:46,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:40:46,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 19:40:46,796 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-15 19:40:46,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-15 19:40:46,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:40:46,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:40:46,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:40:46,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-15 19:40:46,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-15 19:40:46,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 19:40:46,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:40:46,799 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-15 19:40:47,415 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:40:47,415 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-15 19:40:47,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:40:47 BoogieIcfgContainer [2021-10-15 19:40:47,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:40:47,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:40:47,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:40:47,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:40:47,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:40:45" (1/3) ... [2021-10-15 19:40:47,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d5f09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:40:47, skipping insertion in model container [2021-10-15 19:40:47,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:46" (2/3) ... [2021-10-15 19:40:47,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d5f09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:40:47, skipping insertion in model container [2021-10-15 19:40:47,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:40:47" (3/3) ... [2021-10-15 19:40:47,433 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_1-join.i [2021-10-15 19:40:47,439 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-15 19:40:47,445 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:40:47,445 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-15 19:40:47,446 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-15 19:40:47,478 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,479 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,479 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,479 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,480 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,480 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,480 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,480 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,481 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,481 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,481 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,482 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,482 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_ldv_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,482 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_ldv_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,483 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,483 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,483 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_ldv_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,484 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,484 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_ldv_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,484 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,485 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,485 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,485 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,486 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,494 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,497 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,497 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,498 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,498 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,498 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,498 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_ldv_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:40:47,524 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-10-15 19:40:47,632 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:40:47,641 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, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 19:40:47,641 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-15 19:40:47,655 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 95 transitions, 198 flow [2021-10-15 19:40:47,705 INFO L129 PetriNetUnfolder]: 5/106 cut-off events. [2021-10-15 19:40:47,706 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:40:47,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 106 events. 5/106 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 188 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 60. Up to 3 conditions per place. [2021-10-15 19:40:47,709 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 95 transitions, 198 flow [2021-10-15 19:40:47,715 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 85 transitions, 176 flow [2021-10-15 19:40:47,727 INFO L129 PetriNetUnfolder]: 0/28 cut-off events. [2021-10-15 19:40:47,727 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:40:47,728 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:40:47,729 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] [2021-10-15 19:40:47,729 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 19:40:47,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:40:47,742 INFO L82 PathProgramCache]: Analyzing trace with hash -437469631, now seen corresponding path program 1 times [2021-10-15 19:40:47,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:40:47,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769808579] [2021-10-15 19:40:47,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:40:47,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:40:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:40:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:40:48,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:40:48,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769808579] [2021-10-15 19:40:48,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769808579] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:40:48,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:40:48,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:40:48,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758384304] [2021-10-15 19:40:48,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:40:48,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:40:48,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:40:48,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:40:48,395 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 95 [2021-10-15 19:40:48,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 85 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:48,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:40:48,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 95 [2021-10-15 19:40:48,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:40:48,533 INFO L129 PetriNetUnfolder]: 0/79 cut-off events. [2021-10-15 19:40:48,533 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:40:48,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 79 events. 0/79 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 1/77 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-10-15 19:40:48,535 INFO L132 encePairwiseOnDemand]: 84/95 looper letters, 9 selfloop transitions, 9 changer transitions 0/79 dead transitions. [2021-10-15 19:40:48,535 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 79 transitions, 200 flow [2021-10-15 19:40:48,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:40:48,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:40:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 482 transitions. [2021-10-15 19:40:48,555 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.724812030075188 [2021-10-15 19:40:48,556 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 482 transitions. [2021-10-15 19:40:48,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 482 transitions. [2021-10-15 19:40:48,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:40:48,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 482 transitions. [2021-10-15 19:40:48,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:48,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:48,580 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:48,583 INFO L186 Difference]: Start difference. First operand has 87 places, 85 transitions, 176 flow. Second operand 7 states and 482 transitions. [2021-10-15 19:40:48,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 79 transitions, 200 flow [2021-10-15 19:40:48,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 79 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:40:48,593 INFO L242 Difference]: Finished difference. Result has 87 places, 79 transitions, 178 flow [2021-10-15 19:40:48,595 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=178, PETRI_PLACES=87, PETRI_TRANSITIONS=79} [2021-10-15 19:40:48,596 INFO L334 CegarLoopForPetriNet]: 87 programPoint places, 0 predicate places. [2021-10-15 19:40:48,596 INFO L470 AbstractCegarLoop]: Abstraction has has 87 places, 79 transitions, 178 flow [2021-10-15 19:40:48,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:48,597 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:40:48,597 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] [2021-10-15 19:40:48,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:40:48,598 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 19:40:48,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:40:48,599 INFO L82 PathProgramCache]: Analyzing trace with hash -589848071, now seen corresponding path program 1 times [2021-10-15 19:40:48,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:40:48,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532779740] [2021-10-15 19:40:48,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:40:48,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:40:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:40:48,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:40:48,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:40:48,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532779740] [2021-10-15 19:40:48,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532779740] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:40:48,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:40:48,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:40:48,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666986801] [2021-10-15 19:40:48,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:40:48,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:40:48,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:40:48,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:40:48,757 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 95 [2021-10-15 19:40:48,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 79 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 68.2) internal successors, (341), 5 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:48,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:40:48,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 95 [2021-10-15 19:40:48,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:40:48,832 INFO L129 PetriNetUnfolder]: 0/77 cut-off events. [2021-10-15 19:40:48,833 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-15 19:40:48,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 77 events. 0/77 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 1/75 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-10-15 19:40:48,834 INFO L132 encePairwiseOnDemand]: 88/95 looper letters, 11 selfloop transitions, 2 changer transitions 6/77 dead transitions. [2021-10-15 19:40:48,834 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 208 flow [2021-10-15 19:40:48,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:40:48,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:40:48,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 414 transitions. [2021-10-15 19:40:48,844 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7263157894736842 [2021-10-15 19:40:48,844 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 414 transitions. [2021-10-15 19:40:48,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 414 transitions. [2021-10-15 19:40:48,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:40:48,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 414 transitions. [2021-10-15 19:40:48,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 69.0) internal successors, (414), 6 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:48,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:48,854 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:48,854 INFO L186 Difference]: Start difference. First operand has 87 places, 79 transitions, 178 flow. Second operand 6 states and 414 transitions. [2021-10-15 19:40:48,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 77 transitions, 208 flow [2021-10-15 19:40:48,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 77 transitions, 190 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-10-15 19:40:48,859 INFO L242 Difference]: Finished difference. Result has 84 places, 71 transitions, 148 flow [2021-10-15 19:40:48,860 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=84, PETRI_TRANSITIONS=71} [2021-10-15 19:40:48,861 INFO L334 CegarLoopForPetriNet]: 87 programPoint places, -3 predicate places. [2021-10-15 19:40:48,861 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 71 transitions, 148 flow [2021-10-15 19:40:48,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.2) internal successors, (341), 5 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:48,862 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:40:48,862 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] [2021-10-15 19:40:48,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:40:48,863 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 19:40:48,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:40:48,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1940067079, now seen corresponding path program 1 times [2021-10-15 19:40:48,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:40:48,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874602221] [2021-10-15 19:40:48,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:40:48,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:40:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:40:49,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:40:49,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:40:49,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874602221] [2021-10-15 19:40:49,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874602221] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:40:49,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:40:49,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:40:49,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235352135] [2021-10-15 19:40:49,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:40:49,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:40:49,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:40:49,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:40:49,044 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 95 [2021-10-15 19:40:49,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 71 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:49,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:40:49,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 95 [2021-10-15 19:40:49,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:40:49,127 INFO L129 PetriNetUnfolder]: 0/69 cut-off events. [2021-10-15 19:40:49,127 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:40:49,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 69 events. 0/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-10-15 19:40:49,128 INFO L132 encePairwiseOnDemand]: 90/95 looper letters, 7 selfloop transitions, 4 changer transitions 5/69 dead transitions. [2021-10-15 19:40:49,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 69 transitions, 166 flow [2021-10-15 19:40:49,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:40:49,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:40:49,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 450 transitions. [2021-10-15 19:40:49,133 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7894736842105263 [2021-10-15 19:40:49,134 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 450 transitions. [2021-10-15 19:40:49,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 450 transitions. [2021-10-15 19:40:49,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:40:49,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 450 transitions. [2021-10-15 19:40:49,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:49,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:49,141 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:49,141 INFO L186 Difference]: Start difference. First operand has 84 places, 71 transitions, 148 flow. Second operand 6 states and 450 transitions. [2021-10-15 19:40:49,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 69 transitions, 166 flow [2021-10-15 19:40:49,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 69 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:40:49,147 INFO L242 Difference]: Finished difference. Result has 76 places, 64 transitions, 138 flow [2021-10-15 19:40:49,147 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=138, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2021-10-15 19:40:49,147 INFO L334 CegarLoopForPetriNet]: 87 programPoint places, -11 predicate places. [2021-10-15 19:40:49,148 INFO L470 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 138 flow [2021-10-15 19:40:49,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:49,149 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:40:49,149 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] [2021-10-15 19:40:49,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:40:49,150 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 19:40:49,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:40:49,151 INFO L82 PathProgramCache]: Analyzing trace with hash 643455659, now seen corresponding path program 1 times [2021-10-15 19:40:49,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:40:49,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573590214] [2021-10-15 19:40:49,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:40:49,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:40:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:40:49,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:40:49,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:40:49,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573590214] [2021-10-15 19:40:49,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573590214] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:40:49,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:40:49,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:40:49,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608913221] [2021-10-15 19:40:49,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:40:49,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:40:49,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:40:49,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:40:49,311 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 95 [2021-10-15 19:40:49,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:49,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:40:49,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 95 [2021-10-15 19:40:49,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:40:49,361 INFO L129 PetriNetUnfolder]: 0/62 cut-off events. [2021-10-15 19:40:49,361 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-15 19:40:49,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 62 events. 0/62 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 1/63 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-10-15 19:40:49,362 INFO L132 encePairwiseOnDemand]: 89/95 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2021-10-15 19:40:49,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 62 transitions, 158 flow [2021-10-15 19:40:49,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:40:49,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:40:49,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 409 transitions. [2021-10-15 19:40:49,365 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7175438596491228 [2021-10-15 19:40:49,365 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 409 transitions. [2021-10-15 19:40:49,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 409 transitions. [2021-10-15 19:40:49,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:40:49,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 409 transitions. [2021-10-15 19:40:49,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:49,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:49,370 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:49,371 INFO L186 Difference]: Start difference. First operand has 76 places, 64 transitions, 138 flow. Second operand 6 states and 409 transitions. [2021-10-15 19:40:49,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 62 transitions, 158 flow [2021-10-15 19:40:49,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 62 transitions, 151 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-15 19:40:49,373 INFO L242 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2021-10-15 19:40:49,373 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2021-10-15 19:40:49,373 INFO L334 CegarLoopForPetriNet]: 87 programPoint places, -17 predicate places. [2021-10-15 19:40:49,374 INFO L470 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2021-10-15 19:40:49,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:49,377 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:40:49,377 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:40:49,378 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:40:49,378 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:40:49,378 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-15 19:40:49,378 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:40:49,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 19:40:49,387 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-15 19:40:49,387 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:40:49,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:40:49 BasicIcfg [2021-10-15 19:40:49,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:40:49,391 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:40:49,391 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:40:49,391 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:40:49,391 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:40:47" (3/4) ... [2021-10-15 19:40:49,395 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:40:49,402 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-15 19:40:49,420 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-15 19:40:49,420 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 19:40:49,420 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:40:49,421 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:40:49,475 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055242c5-4f79-4443-8a89-87e04da75a91/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:40:49,476 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:40:49,478 INFO L168 Benchmark]: Toolchain (without parser) took 4282.53 ms. Allocated memory was 98.6 MB in the beginning and 169.9 MB in the end (delta: 71.3 MB). Free memory was 63.2 MB in the beginning and 137.0 MB in the end (delta: -73.8 MB). Peak memory consumption was 66.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:40:49,479 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 98.6 MB. Free memory is still 55.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:40:49,480 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1331.79 ms. Allocated memory was 98.6 MB in the beginning and 123.7 MB in the end (delta: 25.2 MB). Free memory was 63.0 MB in the beginning and 86.6 MB in the end (delta: -23.6 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2021-10-15 19:40:49,480 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.15 ms. Allocated memory is still 123.7 MB. Free memory was 86.6 MB in the beginning and 83.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:40:49,481 INFO L168 Benchmark]: Boogie Preprocessor took 74.11 ms. Allocated memory is still 123.7 MB. Free memory was 83.7 MB in the beginning and 81.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:40:49,482 INFO L168 Benchmark]: RCFGBuilder took 715.55 ms. Allocated memory is still 123.7 MB. Free memory was 80.9 MB in the beginning and 64.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:40:49,483 INFO L168 Benchmark]: TraceAbstraction took 1969.56 ms. Allocated memory was 123.7 MB in the beginning and 169.9 MB in the end (delta: 46.1 MB). Free memory was 64.8 MB in the beginning and 72.6 MB in the end (delta: -7.8 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:40:49,483 INFO L168 Benchmark]: Witness Printer took 85.29 ms. Allocated memory is still 169.9 MB. Free memory was 72.6 MB in the beginning and 137.0 MB in the end (delta: -64.4 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2021-10-15 19:40:49,487 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 98.6 MB. Free memory is still 55.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1331.79 ms. Allocated memory was 98.6 MB in the beginning and 123.7 MB in the end (delta: 25.2 MB). Free memory was 63.0 MB in the beginning and 86.6 MB in the end (delta: -23.6 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.15 ms. Allocated memory is still 123.7 MB. Free memory was 86.6 MB in the beginning and 83.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.11 ms. Allocated memory is still 123.7 MB. Free memory was 83.7 MB in the beginning and 81.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 715.55 ms. Allocated memory is still 123.7 MB. Free memory was 80.9 MB in the beginning and 64.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1969.56 ms. Allocated memory was 123.7 MB in the beginning and 169.9 MB in the end (delta: 46.1 MB). Free memory was 64.8 MB in the beginning and 72.6 MB in the end (delta: -7.8 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. * Witness Printer took 85.29 ms. Allocated memory is still 169.9 MB. Free memory was 72.6 MB in the beginning and 137.0 MB in the end (delta: -64.4 MB). Peak memory consumption was 4.8 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: 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 3 procedures, 106 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 11.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1761.2ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 496.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 74.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 48 SDtfs, 46 SDslu, 55 SDs, 0 SdLazy, 65 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 158.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=178occurred in iteration=1, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.5ms SsaConstructionTime, 155.6ms SatisfiabilityAnalysisTime, 611.4ms InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 208 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:40:49,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055242c5-4f79-4443-8a89-87e04da75a91/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...