./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a8b6f81-e255-4a9c-bc88-74861dd2a651/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a8b6f81-e255-4a9c-bc88-74861dd2a651/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a8b6f81-e255-4a9c-bc88-74861dd2a651/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a8b6f81-e255-4a9c-bc88-74861dd2a651/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a8b6f81-e255-4a9c-bc88-74861dd2a651/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a8b6f81-e255-4a9c-bc88-74861dd2a651/bin/uautomizer-ug76WZFUDN --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 c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:36:20,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:36:20,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:36:20,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:36:20,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:36:20,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:36:20,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:36:20,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:36:20,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:36:20,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:36:20,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:36:20,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:36:20,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:36:20,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:36:20,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:36:20,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:36:20,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:36:20,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:36:20,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:36:20,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:36:20,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:36:20,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:36:20,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:36:20,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:36:20,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:36:20,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:36:20,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:36:20,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:36:20,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:36:20,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:36:20,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:36:20,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:36:20,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:36:20,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:36:20,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:36:20,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:36:20,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:36:20,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:36:20,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:36:20,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:36:20,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:36:20,216 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a8b6f81-e255-4a9c-bc88-74861dd2a651/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:36:20,243 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:36:20,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:36:20,244 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:36:20,244 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:36:20,245 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:36:20,245 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:36:20,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:36:20,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:36:20,247 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:36:20,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:36:20,247 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:36:20,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:36:20,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:36:20,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:36:20,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:36:20,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:36:20,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:36:20,249 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:36:20,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:36:20,250 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:36:20,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:36:20,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:36:20,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:36:20,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:36:20,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:36:20,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:36:20,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:36:20,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:36:20,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:36:20,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:36:20,253 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:36:20,253 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:36:20,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:36:20,254 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_5a8b6f81-e255-4a9c-bc88-74861dd2a651/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a8b6f81-e255-4a9c-bc88-74861dd2a651/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 [2022-11-20 12:36:20,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:36:20,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:36:20,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:36:20,704 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:36:20,705 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:36:20,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a8b6f81-e255-4a9c-bc88-74861dd2a651/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2022-11-20 12:36:24,257 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:36:24,434 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:36:24,434 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a8b6f81-e255-4a9c-bc88-74861dd2a651/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2022-11-20 12:36:24,442 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a8b6f81-e255-4a9c-bc88-74861dd2a651/bin/uautomizer-ug76WZFUDN/data/5eeb7cbdc/65817bf5ed3a481590d9c169e4e54a34/FLAGcd20b635e [2022-11-20 12:36:24,456 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a8b6f81-e255-4a9c-bc88-74861dd2a651/bin/uautomizer-ug76WZFUDN/data/5eeb7cbdc/65817bf5ed3a481590d9c169e4e54a34 [2022-11-20 12:36:24,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:36:24,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:36:24,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:36:24,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:36:24,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:36:24,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:36:24" (1/1) ... [2022-11-20 12:36:24,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cedcfc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:24, skipping insertion in model container [2022-11-20 12:36:24,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:36:24" (1/1) ... [2022-11-20 12:36:24,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:36:24,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:36:24,657 WARN L237 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_5a8b6f81-e255-4a9c-bc88-74861dd2a651/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c[2133,2146] [2022-11-20 12:36:24,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:36:24,674 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:36:24,697 WARN L237 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_5a8b6f81-e255-4a9c-bc88-74861dd2a651/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c[2133,2146] [2022-11-20 12:36:24,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:36:24,714 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:36:24,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:24 WrapperNode [2022-11-20 12:36:24,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:36:24,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:36:24,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:36:24,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:36:24,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:24" (1/1) ... [2022-11-20 12:36:24,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:24" (1/1) ... [2022-11-20 12:36:24,801 INFO L138 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2022-11-20 12:36:24,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:36:24,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:36:24,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:36:24,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:36:24,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:24" (1/1) ... [2022-11-20 12:36:24,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:24" (1/1) ... [2022-11-20 12:36:24,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:24" (1/1) ... [2022-11-20 12:36:24,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:24" (1/1) ... [2022-11-20 12:36:24,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:24" (1/1) ... [2022-11-20 12:36:24,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:24" (1/1) ... [2022-11-20 12:36:24,847 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:24" (1/1) ... [2022-11-20 12:36:24,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:24" (1/1) ... [2022-11-20 12:36:24,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:36:24,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:36:24,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:36:24,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:36:24,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:24" (1/1) ... [2022-11-20 12:36:24,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:36:24,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a8b6f81-e255-4a9c-bc88-74861dd2a651/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:36:24,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a8b6f81-e255-4a9c-bc88-74861dd2a651/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:36:24,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a8b6f81-e255-4a9c-bc88-74861dd2a651/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:36:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:36:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:36:24,971 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:36:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:36:24,972 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:36:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:36:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:36:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:36:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:36:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:36:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:36:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:36:24,977 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:36:25,100 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:36:25,102 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:36:25,281 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:36:25,289 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:36:25,289 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:36:25,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:36:25 BoogieIcfgContainer [2022-11-20 12:36:25,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:36:25,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:36:25,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:36:25,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:36:25,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:36:24" (1/3) ... [2022-11-20 12:36:25,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e703edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:36:25, skipping insertion in model container [2022-11-20 12:36:25,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:24" (2/3) ... [2022-11-20 12:36:25,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e703edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:36:25, skipping insertion in model container [2022-11-20 12:36:25,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:36:25" (3/3) ... [2022-11-20 12:36:25,302 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-sre-symm.wvr.c [2022-11-20 12:36:25,313 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:36:25,326 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:36:25,326 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:36:25,327 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:36:25,387 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:36:25,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 82 transitions, 180 flow [2022-11-20 12:36:25,501 INFO L130 PetriNetUnfolder]: 3/80 cut-off events. [2022-11-20 12:36:25,501 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 12:36:25,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 3/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 18 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2022-11-20 12:36:25,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 82 transitions, 180 flow [2022-11-20 12:36:25,513 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 71 transitions, 154 flow [2022-11-20 12:36:25,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:36:25,534 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4df218a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:36:25,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 12:36:25,629 INFO L130 PetriNetUnfolder]: 3/70 cut-off events. [2022-11-20 12:36:25,642 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 12:36:25,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:36:25,643 INFO L209 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] [2022-11-20 12:36:25,643 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:36:25,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:25,649 INFO L85 PathProgramCache]: Analyzing trace with hash -719373872, now seen corresponding path program 1 times [2022-11-20 12:36:25,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:25,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298558537] [2022-11-20 12:36:25,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:25,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:36:28,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:28,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298558537] [2022-11-20 12:36:28,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298558537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:28,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:28,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:36:28,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712579689] [2022-11-20 12:36:28,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:28,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:36:28,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:28,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:36:28,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:36:28,364 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 82 [2022-11-20 12:36:28,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 154 flow. Second operand has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:36:28,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:36:28,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 82 [2022-11-20 12:36:28,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:36:30,190 INFO L130 PetriNetUnfolder]: 2/107 cut-off events. [2022-11-20 12:36:30,190 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-20 12:36:30,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 107 events. 2/107 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 0 based on Foata normal form. 6/108 useless extension candidates. Maximal degree in co-relation 37. Up to 19 conditions per place. [2022-11-20 12:36:30,193 INFO L137 encePairwiseOnDemand]: 65/82 looper letters, 23 selfloop transitions, 1 changer transitions 21/86 dead transitions. [2022-11-20 12:36:30,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 86 transitions, 283 flow [2022-11-20 12:36:30,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:36:30,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 12:36:30,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 817 transitions. [2022-11-20 12:36:30,216 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6642276422764227 [2022-11-20 12:36:30,217 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 817 transitions. [2022-11-20 12:36:30,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 817 transitions. [2022-11-20 12:36:30,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:36:30,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 817 transitions. [2022-11-20 12:36:30,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 54.46666666666667) internal successors, (817), 15 states have internal predecessors, (817), 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) [2022-11-20 12:36:30,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 82.0) internal successors, (1312), 16 states have internal predecessors, (1312), 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) [2022-11-20 12:36:30,246 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 82.0) internal successors, (1312), 16 states have internal predecessors, (1312), 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) [2022-11-20 12:36:30,249 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 154 flow. Second operand 15 states and 817 transitions. [2022-11-20 12:36:30,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 86 transitions, 283 flow [2022-11-20 12:36:30,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 86 transitions, 269 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:36:30,258 INFO L231 Difference]: Finished difference. Result has 95 places, 65 transitions, 157 flow [2022-11-20 12:36:30,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=157, PETRI_PLACES=95, PETRI_TRANSITIONS=65} [2022-11-20 12:36:30,266 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 20 predicate places. [2022-11-20 12:36:30,266 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 65 transitions, 157 flow [2022-11-20 12:36:30,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:36:30,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:36:30,267 INFO L209 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] [2022-11-20 12:36:30,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:36:30,268 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:36:30,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:30,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1635019226, now seen corresponding path program 2 times [2022-11-20 12:36:30,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:30,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11297386] [2022-11-20 12:36:30,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:30,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:31,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:36:31,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:31,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11297386] [2022-11-20 12:36:31,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11297386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:31,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:31,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:36:31,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892278208] [2022-11-20 12:36:31,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:31,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:36:31,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:31,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:36:31,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:36:31,733 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 82 [2022-11-20 12:36:31,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 65 transitions, 157 flow. Second operand has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:36:31,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:36:31,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 82 [2022-11-20 12:36:31,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:36:32,882 INFO L130 PetriNetUnfolder]: 1/72 cut-off events. [2022-11-20 12:36:32,883 INFO L131 PetriNetUnfolder]: For 11/14 co-relation queries the response was YES. [2022-11-20 12:36:32,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 72 events. 1/72 cut-off events. For 11/14 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 1 based on Foata normal form. 3/74 useless extension candidates. Maximal degree in co-relation 114. Up to 13 conditions per place. [2022-11-20 12:36:32,884 INFO L137 encePairwiseOnDemand]: 71/82 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2022-11-20 12:36:32,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 64 transitions, 207 flow [2022-11-20 12:36:32,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:36:32,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 12:36:32,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 638 transitions. [2022-11-20 12:36:32,887 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6483739837398373 [2022-11-20 12:36:32,887 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 638 transitions. [2022-11-20 12:36:32,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 638 transitions. [2022-11-20 12:36:32,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:36:32,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 638 transitions. [2022-11-20 12:36:32,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 53.166666666666664) internal successors, (638), 12 states have internal predecessors, (638), 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) [2022-11-20 12:36:32,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 82.0) internal successors, (1066), 13 states have internal predecessors, (1066), 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) [2022-11-20 12:36:32,895 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 82.0) internal successors, (1066), 13 states have internal predecessors, (1066), 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) [2022-11-20 12:36:32,895 INFO L175 Difference]: Start difference. First operand has 95 places, 65 transitions, 157 flow. Second operand 12 states and 638 transitions. [2022-11-20 12:36:32,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 64 transitions, 207 flow [2022-11-20 12:36:32,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 64 transitions, 189 flow, removed 8 selfloop flow, removed 9 redundant places. [2022-11-20 12:36:32,898 INFO L231 Difference]: Finished difference. Result has 79 places, 0 transitions, 0 flow [2022-11-20 12:36:32,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=68, 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=12, PETRI_FLOW=0, PETRI_PLACES=79, PETRI_TRANSITIONS=0} [2022-11-20 12:36:32,900 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2022-11-20 12:36:32,900 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 0 transitions, 0 flow [2022-11-20 12:36:32,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:36:32,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-20 12:36:32,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-20 12:36:32,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-20 12:36:32,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:36:32,927 INFO L444 BasicCegarLoop]: Path program histogram: [2] [2022-11-20 12:36:32,936 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 12:36:32,936 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:36:32,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:36:32 BasicIcfg [2022-11-20 12:36:32,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:36:32,943 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:36:32,943 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:36:32,943 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:36:32,944 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:36:25" (3/4) ... [2022-11-20 12:36:32,948 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:36:32,956 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 12:36:32,956 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 12:36:32,962 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-20 12:36:32,963 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 12:36:32,963 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 12:36:32,963 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:36:33,028 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a8b6f81-e255-4a9c-bc88-74861dd2a651/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:36:33,028 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:36:33,029 INFO L158 Benchmark]: Toolchain (without parser) took 8569.02ms. Allocated memory was 153.1MB in the beginning and 260.0MB in the end (delta: 107.0MB). Free memory was 109.7MB in the beginning and 226.5MB in the end (delta: -116.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:36:33,029 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 153.1MB. Free memory is still 99.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:36:33,030 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.86ms. Allocated memory is still 153.1MB. Free memory was 109.3MB in the beginning and 98.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:36:33,030 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.50ms. Allocated memory is still 153.1MB. Free memory was 98.8MB in the beginning and 97.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:36:33,031 INFO L158 Benchmark]: Boogie Preprocessor took 48.82ms. Allocated memory is still 153.1MB. Free memory was 97.1MB in the beginning and 95.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:36:33,031 INFO L158 Benchmark]: RCFGBuilder took 440.32ms. Allocated memory is still 153.1MB. Free memory was 95.6MB in the beginning and 83.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 12:36:33,031 INFO L158 Benchmark]: TraceAbstraction took 7647.73ms. Allocated memory was 153.1MB in the beginning and 260.0MB in the end (delta: 107.0MB). Free memory was 83.0MB in the beginning and 229.6MB in the end (delta: -146.6MB). Peak memory consumption was 108.0MB. Max. memory is 16.1GB. [2022-11-20 12:36:33,032 INFO L158 Benchmark]: Witness Printer took 85.42ms. Allocated memory is still 260.0MB. Free memory was 229.6MB in the beginning and 226.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:36:33,034 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 153.1MB. Free memory is still 99.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 253.86ms. Allocated memory is still 153.1MB. Free memory was 109.3MB in the beginning and 98.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.50ms. Allocated memory is still 153.1MB. Free memory was 98.8MB in the beginning and 97.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.82ms. Allocated memory is still 153.1MB. Free memory was 97.1MB in the beginning and 95.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 440.32ms. Allocated memory is still 153.1MB. Free memory was 95.6MB in the beginning and 83.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7647.73ms. Allocated memory was 153.1MB in the beginning and 260.0MB in the end (delta: 107.0MB). Free memory was 83.0MB in the beginning and 229.6MB in the end (delta: -146.6MB). Peak memory consumption was 108.0MB. Max. memory is 16.1GB. * Witness Printer took 85.42ms. Allocated memory is still 260.0MB. Free memory was 229.6MB in the beginning and 226.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 69]: 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, 90 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: 7.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 114 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 114 mSDsluCounter, 111 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 88 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 197 IncrementalHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 23 mSDtfsCounter, 197 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=157occurred in iteration=1, InterpolantAutomatonStates: 27, 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, 0.2s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 2372 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2022-11-20 12:36:33,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a8b6f81-e255-4a9c-bc88-74861dd2a651/bin/uautomizer-ug76WZFUDN/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