./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8f586d-c2c4-4ceb-a36f-179d02e63600/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8f586d-c2c4-4ceb-a36f-179d02e63600/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_0d8f586d-c2c4-4ceb-a36f-179d02e63600/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8f586d-c2c4-4ceb-a36f-179d02e63600/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8f586d-c2c4-4ceb-a36f-179d02e63600/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_0d8f586d-c2c4-4ceb-a36f-179d02e63600/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 64fd5c9a7c03c96af66cf5f857887398d304caaa83220f1caa01f4ec8c71700a --- 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 10:49:56,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:49:56,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:49:56,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:49:56,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:49:56,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:49:56,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:49:56,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:49:56,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:49:56,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:49:56,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:49:56,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:49:56,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:49:56,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:49:56,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:49:56,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:49:56,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:49:56,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:49:56,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:49:56,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:49:56,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:49:56,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:49:56,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:49:56,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:49:56,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:49:56,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:49:56,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:49:56,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:49:56,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:49:56,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:49:56,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:49:56,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:49:56,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:49:56,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:49:56,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:49:56,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:49:56,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:49:56,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:49:56,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:49:56,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:49:56,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:49:56,224 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8f586d-c2c4-4ceb-a36f-179d02e63600/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:49:56,262 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:49:56,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:49:56,265 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:49:56,265 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:49:56,266 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:49:56,266 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:49:56,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:49:56,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:49:56,268 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:49:56,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:49:56,269 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:49:56,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:49:56,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:49:56,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:49:56,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:49:56,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:49:56,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:49:56,271 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:49:56,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:49:56,271 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:49:56,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:49:56,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:49:56,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:49:56,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:49:56,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:49:56,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:49:56,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:49:56,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:49:56,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:49:56,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:49:56,274 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:49:56,274 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:49:56,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:49:56,274 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_0d8f586d-c2c4-4ceb-a36f-179d02e63600/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8f586d-c2c4-4ceb-a36f-179d02e63600/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64fd5c9a7c03c96af66cf5f857887398d304caaa83220f1caa01f4ec8c71700a [2022-11-20 10:49:56,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:49:56,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:49:56,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:49:56,581 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:49:56,582 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:49:56,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8f586d-c2c4-4ceb-a36f-179d02e63600/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c [2022-11-20 10:49:59,762 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:50:00,031 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:50:00,031 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8f586d-c2c4-4ceb-a36f-179d02e63600/sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c [2022-11-20 10:50:00,039 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8f586d-c2c4-4ceb-a36f-179d02e63600/bin/uautomizer-ug76WZFUDN/data/d5f90a87f/2e73c7bf7ced4450aa89ace6b3260412/FLAGd828f37dc [2022-11-20 10:50:00,054 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8f586d-c2c4-4ceb-a36f-179d02e63600/bin/uautomizer-ug76WZFUDN/data/d5f90a87f/2e73c7bf7ced4450aa89ace6b3260412 [2022-11-20 10:50:00,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:50:00,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:50:00,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:50:00,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:50:00,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:50:00,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:50:00" (1/1) ... [2022-11-20 10:50:00,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e89a74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:00, skipping insertion in model container [2022-11-20 10:50:00,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:50:00" (1/1) ... [2022-11-20 10:50:00,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:50:00,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:50:00,341 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_0d8f586d-c2c4-4ceb-a36f-179d02e63600/sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c[2986,2999] [2022-11-20 10:50:00,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:50:00,369 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:50:00,415 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_0d8f586d-c2c4-4ceb-a36f-179d02e63600/sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c[2986,2999] [2022-11-20 10:50:00,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:50:00,434 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:50:00,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:00 WrapperNode [2022-11-20 10:50:00,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:50:00,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:50:00,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:50:00,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:50:00,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:00" (1/1) ... [2022-11-20 10:50:00,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:00" (1/1) ... [2022-11-20 10:50:00,512 INFO L138 Inliner]: procedures = 22, calls = 35, calls flagged for inlining = 15, calls inlined = 29, statements flattened = 252 [2022-11-20 10:50:00,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:50:00,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:50:00,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:50:00,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:50:00,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:00" (1/1) ... [2022-11-20 10:50:00,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:00" (1/1) ... [2022-11-20 10:50:00,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:00" (1/1) ... [2022-11-20 10:50:00,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:00" (1/1) ... [2022-11-20 10:50:00,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:00" (1/1) ... [2022-11-20 10:50:00,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:00" (1/1) ... [2022-11-20 10:50:00,549 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:00" (1/1) ... [2022-11-20 10:50:00,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:00" (1/1) ... [2022-11-20 10:50:00,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:50:00,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:50:00,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:50:00,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:50:00,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:00" (1/1) ... [2022-11-20 10:50:00,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:50:00,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8f586d-c2c4-4ceb-a36f-179d02e63600/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:00,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8f586d-c2c4-4ceb-a36f-179d02e63600/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:50:00,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8f586d-c2c4-4ceb-a36f-179d02e63600/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:50:00,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:50:00,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:50:00,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:50:00,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:50:00,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:50:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:50:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:50:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:50:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 10:50:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 10:50:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:50:00,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:50:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:50:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:50:00,677 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 10:50:00,823 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:50:00,825 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:50:01,274 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:50:01,962 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:50:01,962 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 10:50:01,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:50:01 BoogieIcfgContainer [2022-11-20 10:50:01,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:50:01,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:50:01,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:50:01,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:50:01,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:50:00" (1/3) ... [2022-11-20 10:50:01,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ab4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:50:01, skipping insertion in model container [2022-11-20 10:50:01,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:00" (2/3) ... [2022-11-20 10:50:01,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ab4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:50:01, skipping insertion in model container [2022-11-20 10:50:01,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:50:01" (3/3) ... [2022-11-20 10:50:01,980 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-symm.wvr.c [2022-11-20 10:50:01,990 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:50:02,002 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:50:02,002 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:50:02,002 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:50:02,100 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 10:50:02,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 114 transitions, 244 flow [2022-11-20 10:50:02,233 INFO L130 PetriNetUnfolder]: 3/112 cut-off events. [2022-11-20 10:50:02,234 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 10:50:02,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 112 events. 3/112 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2022-11-20 10:50:02,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 114 transitions, 244 flow [2022-11-20 10:50:02,242 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 103 transitions, 218 flow [2022-11-20 10:50:02,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:50:02,259 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;@247cc214, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:50:02,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 10:50:02,291 INFO L130 PetriNetUnfolder]: 3/102 cut-off events. [2022-11-20 10:50:02,291 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 10:50:02,292 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:50:02,293 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:50:02,293 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 10:50:02,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:02,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1512699852, now seen corresponding path program 1 times [2022-11-20 10:50:02,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:02,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288420178] [2022-11-20 10:50:02,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:02,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:10,890 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 10:50:10,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:10,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288420178] [2022-11-20 10:50:10,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288420178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:10,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:10,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:50:10,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682013215] [2022-11-20 10:50:10,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:10,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:50:10,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:10,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:50:10,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:50:10,958 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 114 [2022-11-20 10:50:10,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 218 flow. Second operand has 12 states, 12 states have (on average 72.16666666666667) internal successors, (866), 12 states have internal predecessors, (866), 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 10:50:10,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:50:10,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 114 [2022-11-20 10:50:10,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:50:13,600 INFO L130 PetriNetUnfolder]: 2/139 cut-off events. [2022-11-20 10:50:13,600 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-20 10:50:13,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 139 events. 2/139 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 130 event pairs, 0 based on Foata normal form. 6/140 useless extension candidates. Maximal degree in co-relation 37. Up to 24 conditions per place. [2022-11-20 10:50:13,602 INFO L137 encePairwiseOnDemand]: 97/114 looper letters, 37 selfloop transitions, 1 changer transitions 21/118 dead transitions. [2022-11-20 10:50:13,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 118 transitions, 375 flow [2022-11-20 10:50:13,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:50:13,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 10:50:13,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1101 transitions. [2022-11-20 10:50:13,631 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.643859649122807 [2022-11-20 10:50:13,632 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1101 transitions. [2022-11-20 10:50:13,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1101 transitions. [2022-11-20 10:50:13,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:50:13,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1101 transitions. [2022-11-20 10:50:13,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 73.4) internal successors, (1101), 15 states have internal predecessors, (1101), 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 10:50:13,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 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 10:50:13,663 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 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 10:50:13,665 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 218 flow. Second operand 15 states and 1101 transitions. [2022-11-20 10:50:13,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 118 transitions, 375 flow [2022-11-20 10:50:13,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 118 transitions, 361 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:50:13,681 INFO L231 Difference]: Finished difference. Result has 127 places, 97 transitions, 221 flow [2022-11-20 10:50:13,683 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=221, PETRI_PLACES=127, PETRI_TRANSITIONS=97} [2022-11-20 10:50:13,688 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 20 predicate places. [2022-11-20 10:50:13,688 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 97 transitions, 221 flow [2022-11-20 10:50:13,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 72.16666666666667) internal successors, (866), 12 states have internal predecessors, (866), 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 10:50:13,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:50:13,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:50:13,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:50:13,692 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 10:50:13,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:13,693 INFO L85 PathProgramCache]: Analyzing trace with hash 327820372, now seen corresponding path program 2 times [2022-11-20 10:50:13,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:13,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106814099] [2022-11-20 10:50:13,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:13,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:17,212 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 10:50:17,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:17,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106814099] [2022-11-20 10:50:17,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106814099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:17,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:17,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:50:17,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033544276] [2022-11-20 10:50:17,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:17,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:50:17,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:17,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:50:17,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:50:17,218 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 114 [2022-11-20 10:50:17,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 97 transitions, 221 flow. Second operand has 12 states, 12 states have (on average 72.16666666666667) internal successors, (866), 12 states have internal predecessors, (866), 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 10:50:17,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:50:17,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 114 [2022-11-20 10:50:17,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:50:18,783 INFO L130 PetriNetUnfolder]: 1/104 cut-off events. [2022-11-20 10:50:18,784 INFO L131 PetriNetUnfolder]: For 11/14 co-relation queries the response was YES. [2022-11-20 10:50:18,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 104 events. 1/104 cut-off events. For 11/14 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 1 based on Foata normal form. 3/106 useless extension candidates. Maximal degree in co-relation 160. Up to 27 conditions per place. [2022-11-20 10:50:18,785 INFO L137 encePairwiseOnDemand]: 103/114 looper letters, 0 selfloop transitions, 0 changer transitions 96/96 dead transitions. [2022-11-20 10:50:18,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 96 transitions, 299 flow [2022-11-20 10:50:18,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:50:18,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 10:50:18,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 868 transitions. [2022-11-20 10:50:18,788 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6345029239766082 [2022-11-20 10:50:18,788 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 868 transitions. [2022-11-20 10:50:18,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 868 transitions. [2022-11-20 10:50:18,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:50:18,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 868 transitions. [2022-11-20 10:50:18,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 72.33333333333333) internal successors, (868), 12 states have internal predecessors, (868), 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 10:50:18,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 114.0) internal successors, (1482), 13 states have internal predecessors, (1482), 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 10:50:18,796 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 114.0) internal successors, (1482), 13 states have internal predecessors, (1482), 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 10:50:18,800 INFO L175 Difference]: Start difference. First operand has 127 places, 97 transitions, 221 flow. Second operand 12 states and 868 transitions. [2022-11-20 10:50:18,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 96 transitions, 299 flow [2022-11-20 10:50:18,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 96 transitions, 281 flow, removed 8 selfloop flow, removed 9 redundant places. [2022-11-20 10:50:18,803 INFO L231 Difference]: Finished difference. Result has 111 places, 0 transitions, 0 flow [2022-11-20 10:50:18,804 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=111, PETRI_TRANSITIONS=0} [2022-11-20 10:50:18,806 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 4 predicate places. [2022-11-20 10:50:18,806 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 0 transitions, 0 flow [2022-11-20 10:50:18,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 72.16666666666667) internal successors, (866), 12 states have internal predecessors, (866), 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 10:50:18,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-20 10:50:18,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-20 10:50:18,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-20 10:50:18,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:50:18,814 INFO L444 BasicCegarLoop]: Path program histogram: [2] [2022-11-20 10:50:18,820 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 10:50:18,826 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:50:18,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:50:18 BasicIcfg [2022-11-20 10:50:18,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:50:18,835 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:50:18,835 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:50:18,835 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:50:18,836 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:50:01" (3/4) ... [2022-11-20 10:50:18,838 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 10:50:18,844 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 10:50:18,844 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 10:50:18,851 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-20 10:50:18,851 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 10:50:18,852 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 10:50:18,852 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 10:50:18,907 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8f586d-c2c4-4ceb-a36f-179d02e63600/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 10:50:18,914 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:50:18,915 INFO L158 Benchmark]: Toolchain (without parser) took 18856.19ms. Allocated memory was 157.3MB in the beginning and 597.7MB in the end (delta: 440.4MB). Free memory was 128.8MB in the beginning and 360.7MB in the end (delta: -231.9MB). Peak memory consumption was 210.8MB. Max. memory is 16.1GB. [2022-11-20 10:50:18,915 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:50:18,915 INFO L158 Benchmark]: CACSL2BoogieTranslator took 376.35ms. Allocated memory is still 157.3MB. Free memory was 128.3MB in the beginning and 116.9MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 10:50:18,918 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.77ms. Allocated memory is still 157.3MB. Free memory was 116.9MB in the beginning and 114.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:50:18,919 INFO L158 Benchmark]: Boogie Preprocessor took 39.69ms. Allocated memory is still 157.3MB. Free memory was 114.3MB in the beginning and 112.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:50:18,919 INFO L158 Benchmark]: RCFGBuilder took 1410.37ms. Allocated memory is still 157.3MB. Free memory was 112.7MB in the beginning and 119.5MB in the end (delta: -6.8MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. [2022-11-20 10:50:18,920 INFO L158 Benchmark]: TraceAbstraction took 16864.43ms. Allocated memory was 157.3MB in the beginning and 597.7MB in the end (delta: 440.4MB). Free memory was 118.4MB in the beginning and 363.8MB in the end (delta: -245.4MB). Peak memory consumption was 193.9MB. Max. memory is 16.1GB. [2022-11-20 10:50:18,920 INFO L158 Benchmark]: Witness Printer took 79.37ms. Allocated memory is still 597.7MB. Free memory was 363.8MB in the beginning and 360.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 10:50:18,922 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 376.35ms. Allocated memory is still 157.3MB. Free memory was 128.3MB in the beginning and 116.9MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.77ms. Allocated memory is still 157.3MB. Free memory was 116.9MB in the beginning and 114.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.69ms. Allocated memory is still 157.3MB. Free memory was 114.3MB in the beginning and 112.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1410.37ms. Allocated memory is still 157.3MB. Free memory was 112.7MB in the beginning and 119.5MB in the end (delta: -6.8MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. * TraceAbstraction took 16864.43ms. Allocated memory was 157.3MB in the beginning and 597.7MB in the end (delta: 440.4MB). Free memory was 118.4MB in the beginning and 363.8MB in the end (delta: -245.4MB). Peak memory consumption was 193.9MB. Max. memory is 16.1GB. * Witness Printer took 79.37ms. Allocated memory is still 597.7MB. Free memory was 363.8MB in the beginning and 360.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 87]: 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, 122 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 16.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 105 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 105 mSDsluCounter, 210 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 163 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 245 IncrementalHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 47 mSDtfsCounter, 245 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, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221occurred 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, 0.9s SatisfiabilityAnalysisTime, 11.1s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 4812 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 10:50:18,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8f586d-c2c4-4ceb-a36f-179d02e63600/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