./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/lazy01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_c6f7a3ad-dde4-40c5-ae10-1353914bbe9d/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f7a3ad-dde4-40c5-ae10-1353914bbe9d/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f7a3ad-dde4-40c5-ae10-1353914bbe9d/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f7a3ad-dde4-40c5-ae10-1353914bbe9d/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/lazy01.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f7a3ad-dde4-40c5-ae10-1353914bbe9d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f7a3ad-dde4-40c5-ae10-1353914bbe9d/bin/uautomizer-ZsLfNo2U6R --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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- 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-38b53e6 [2022-11-25 17:11:12,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:11:12,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:11:12,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:11:12,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:11:12,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:11:12,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:11:12,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:11:12,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:11:12,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:11:12,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:11:12,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:11:12,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:11:12,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:11:12,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:11:12,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:11:12,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:11:12,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:11:12,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:11:12,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:11:12,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:11:12,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:11:12,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:11:12,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:11:12,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:11:12,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:11:12,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:11:12,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:11:12,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:11:12,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:11:12,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:11:12,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:11:12,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:11:12,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:11:12,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:11:12,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:11:12,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:11:12,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:11:12,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:11:12,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:11:12,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:11:12,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f7a3ad-dde4-40c5-ae10-1353914bbe9d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:11:12,352 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:11:12,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:11:12,353 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:11:12,353 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:11:12,354 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:11:12,355 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:11:12,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:11:12,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:11:12,356 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:11:12,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:11:12,358 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:11:12,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:11:12,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:11:12,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:11:12,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:11:12,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:11:12,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:11:12,360 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:11:12,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:11:12,360 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:11:12,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:11:12,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:11:12,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:11:12,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:11:12,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:11:12,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:11:12,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:11:12,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:11:12,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:11:12,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:11:12,363 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:11:12,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:11:12,364 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:11:12,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:11:12,365 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_c6f7a3ad-dde4-40c5-ae10-1353914bbe9d/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f7a3ad-dde4-40c5-ae10-1353914bbe9d/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2022-11-25 17:11:12,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:11:12,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:11:12,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:11:12,761 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:11:12,762 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:11:12,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f7a3ad-dde4-40c5-ae10-1353914bbe9d/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread/lazy01.i [2022-11-25 17:11:15,859 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:11:16,196 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:11:16,197 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f7a3ad-dde4-40c5-ae10-1353914bbe9d/sv-benchmarks/c/pthread/lazy01.i [2022-11-25 17:11:16,211 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f7a3ad-dde4-40c5-ae10-1353914bbe9d/bin/uautomizer-ZsLfNo2U6R/data/aa23bcd8a/ebf010e4af2944dc9c859ec4bf079ff8/FLAGd6d830292 [2022-11-25 17:11:16,228 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f7a3ad-dde4-40c5-ae10-1353914bbe9d/bin/uautomizer-ZsLfNo2U6R/data/aa23bcd8a/ebf010e4af2944dc9c859ec4bf079ff8 [2022-11-25 17:11:16,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:11:16,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:11:16,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:11:16,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:11:16,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:11:16,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:11:16" (1/1) ... [2022-11-25 17:11:16,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b4fa790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:16, skipping insertion in model container [2022-11-25 17:11:16,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:11:16" (1/1) ... [2022-11-25 17:11:16,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:11:16,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:11:16,766 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_c6f7a3ad-dde4-40c5-ae10-1353914bbe9d/sv-benchmarks/c/pthread/lazy01.i[31042,31055] [2022-11-25 17:11:16,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:11:16,803 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:11:16,864 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_c6f7a3ad-dde4-40c5-ae10-1353914bbe9d/sv-benchmarks/c/pthread/lazy01.i[31042,31055] [2022-11-25 17:11:16,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:11:16,919 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:11:16,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:16 WrapperNode [2022-11-25 17:11:16,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:11:16,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:11:16,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:11:16,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:11:16,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:16" (1/1) ... [2022-11-25 17:11:16,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:16" (1/1) ... [2022-11-25 17:11:16,963 INFO L138 Inliner]: procedures = 169, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 62 [2022-11-25 17:11:16,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:11:16,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:11:16,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:11:16,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:11:16,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:16" (1/1) ... [2022-11-25 17:11:16,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:16" (1/1) ... [2022-11-25 17:11:16,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:16" (1/1) ... [2022-11-25 17:11:16,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:16" (1/1) ... [2022-11-25 17:11:16,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:16" (1/1) ... [2022-11-25 17:11:16,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:16" (1/1) ... [2022-11-25 17:11:16,990 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:16" (1/1) ... [2022-11-25 17:11:16,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:16" (1/1) ... [2022-11-25 17:11:16,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:11:16,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:11:16,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:11:16,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:11:16,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:16" (1/1) ... [2022-11-25 17:11:17,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:11:17,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f7a3ad-dde4-40c5-ae10-1353914bbe9d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:11:17,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f7a3ad-dde4-40c5-ae10-1353914bbe9d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:11:17,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f7a3ad-dde4-40c5-ae10-1353914bbe9d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:11:17,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:11:17,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:11:17,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:11:17,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:11:17,093 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:11:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:11:17,093 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:11:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:11:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 17:11:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:11:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:11:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:11:17,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:11:17,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:11:17,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:11:17,097 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:11:17,286 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:11:17,289 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:11:17,557 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:11:17,566 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:11:17,566 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:11:17,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:11:17 BoogieIcfgContainer [2022-11-25 17:11:17,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:11:17,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:11:17,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:11:17,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:11:17,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:11:16" (1/3) ... [2022-11-25 17:11:17,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a3f45f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:11:17, skipping insertion in model container [2022-11-25 17:11:17,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:11:16" (2/3) ... [2022-11-25 17:11:17,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a3f45f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:11:17, skipping insertion in model container [2022-11-25 17:11:17,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:11:17" (3/3) ... [2022-11-25 17:11:17,579 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2022-11-25 17:11:17,590 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:11:17,603 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:11:17,604 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:11:17,604 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:11:17,732 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 17:11:17,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 91 transitions, 206 flow [2022-11-25 17:11:17,893 INFO L130 PetriNetUnfolder]: 1/88 cut-off events. [2022-11-25 17:11:17,893 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:11:17,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 88 events. 1/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-11-25 17:11:17,900 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 91 transitions, 206 flow [2022-11-25 17:11:17,907 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 70 transitions, 155 flow [2022-11-25 17:11:17,912 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:11:17,946 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 70 transitions, 155 flow [2022-11-25 17:11:17,962 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 70 transitions, 155 flow [2022-11-25 17:11:17,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 70 transitions, 155 flow [2022-11-25 17:11:18,003 INFO L130 PetriNetUnfolder]: 0/70 cut-off events. [2022-11-25 17:11:18,003 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:11:18,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 70 events. 0/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-11-25 17:11:18,005 INFO L119 LiptonReduction]: Number of co-enabled transitions 814 [2022-11-25 17:11:21,557 INFO L134 LiptonReduction]: Checked pairs total: 1699 [2022-11-25 17:11:21,557 INFO L136 LiptonReduction]: Total number of compositions: 50 [2022-11-25 17:11:21,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:11:21,582 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;@7513bebb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:11:21,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-25 17:11:21,590 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2022-11-25 17:11:21,590 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:11:21,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:11:21,591 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:11:21,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:11:21,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:21,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2023033607, now seen corresponding path program 1 times [2022-11-25 17:11:21,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:21,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469766990] [2022-11-25 17:11:21,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:21,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:22,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:22,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469766990] [2022-11-25 17:11:22,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469766990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:11:22,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:11:22,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:11:22,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621634564] [2022-11-25 17:11:22,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:11:22,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:11:22,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:22,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:11:22,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:11:22,084 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 141 [2022-11-25 17:11:22,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2022-11-25 17:11:22,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:11:22,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 141 [2022-11-25 17:11:22,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:11:22,280 INFO L130 PetriNetUnfolder]: 285/474 cut-off events. [2022-11-25 17:11:22,280 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-11-25 17:11:22,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 474 events. 285/474 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1635 event pairs, 103 based on Foata normal form. 12/486 useless extension candidates. Maximal degree in co-relation 858. Up to 385 conditions per place. [2022-11-25 17:11:22,288 INFO L137 encePairwiseOnDemand]: 137/141 looper letters, 28 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2022-11-25 17:11:22,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 145 flow [2022-11-25 17:11:22,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:11:22,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:11:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2022-11-25 17:11:22,312 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6359338061465721 [2022-11-25 17:11:22,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2022-11-25 17:11:22,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2022-11-25 17:11:22,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:11:22,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2022-11-25 17:11:22,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2022-11-25 17:11:22,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2022-11-25 17:11:22,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2022-11-25 17:11:22,338 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 55 flow. Second operand 3 states and 269 transitions. [2022-11-25 17:11:22,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 145 flow [2022-11-25 17:11:22,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 133 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-25 17:11:22,347 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 65 flow [2022-11-25 17:11:22,349 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2022-11-25 17:11:22,355 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2022-11-25 17:11:22,356 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 65 flow [2022-11-25 17:11:22,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2022-11-25 17:11:22,356 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:11:22,356 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:11:22,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:11:22,357 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:11:22,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:22,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1522596031, now seen corresponding path program 1 times [2022-11-25 17:11:22,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:22,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750816803] [2022-11-25 17:11:22,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:22,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:22,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:22,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750816803] [2022-11-25 17:11:22,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750816803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:11:22,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:11:22,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:11:22,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18735086] [2022-11-25 17:11:22,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:11:22,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:11:22,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:22,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:11:22,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:11:22,631 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 141 [2022-11-25 17:11:22,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2022-11-25 17:11:22,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:11:22,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 141 [2022-11-25 17:11:22,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:11:22,747 INFO L130 PetriNetUnfolder]: 68/171 cut-off events. [2022-11-25 17:11:22,747 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 17:11:22,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 171 events. 68/171 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 620 event pairs, 13 based on Foata normal form. 50/221 useless extension candidates. Maximal degree in co-relation 167. Up to 117 conditions per place. [2022-11-25 17:11:22,754 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 24 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2022-11-25 17:11:22,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 146 flow [2022-11-25 17:11:22,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:11:22,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:11:22,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2022-11-25 17:11:22,761 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6052009456264775 [2022-11-25 17:11:22,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 256 transitions. [2022-11-25 17:11:22,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 256 transitions. [2022-11-25 17:11:22,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:11:22,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 256 transitions. [2022-11-25 17:11:22,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2022-11-25 17:11:22,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2022-11-25 17:11:22,767 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2022-11-25 17:11:22,767 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 65 flow. Second operand 3 states and 256 transitions. [2022-11-25 17:11:22,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 146 flow [2022-11-25 17:11:22,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 143 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:11:22,769 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 72 flow [2022-11-25 17:11:22,770 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2022-11-25 17:11:22,771 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2022-11-25 17:11:22,771 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 72 flow [2022-11-25 17:11:22,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2022-11-25 17:11:22,771 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:11:22,772 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:11:22,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:11:22,773 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:11:22,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:22,776 INFO L85 PathProgramCache]: Analyzing trace with hash -60649481, now seen corresponding path program 1 times [2022-11-25 17:11:22,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:22,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450024231] [2022-11-25 17:11:22,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:22,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:22,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:22,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:22,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450024231] [2022-11-25 17:11:22,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450024231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:11:22,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:11:22,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:11:22,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644882910] [2022-11-25 17:11:22,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:11:22,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:11:22,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:22,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:11:22,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:11:22,913 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 141 [2022-11-25 17:11:22,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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) [2022-11-25 17:11:22,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:11:22,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 141 [2022-11-25 17:11:22,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:11:23,036 INFO L130 PetriNetUnfolder]: 75/176 cut-off events. [2022-11-25 17:11:23,037 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-11-25 17:11:23,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 176 events. 75/176 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 539 event pairs, 32 based on Foata normal form. 2/178 useless extension candidates. Maximal degree in co-relation 172. Up to 107 conditions per place. [2022-11-25 17:11:23,038 INFO L137 encePairwiseOnDemand]: 137/141 looper letters, 30 selfloop transitions, 4 changer transitions 2/36 dead transitions. [2022-11-25 17:11:23,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 36 transitions, 187 flow [2022-11-25 17:11:23,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:11:23,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:11:23,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 349 transitions. [2022-11-25 17:11:23,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6187943262411347 [2022-11-25 17:11:23,041 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 349 transitions. [2022-11-25 17:11:23,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 349 transitions. [2022-11-25 17:11:23,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:11:23,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 349 transitions. [2022-11-25 17:11:23,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 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) [2022-11-25 17:11:23,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2022-11-25 17:11:23,045 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2022-11-25 17:11:23,045 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 72 flow. Second operand 4 states and 349 transitions. [2022-11-25 17:11:23,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 36 transitions, 187 flow [2022-11-25 17:11:23,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:11:23,047 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 79 flow [2022-11-25 17:11:23,048 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=79, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2022-11-25 17:11:23,049 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2022-11-25 17:11:23,049 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 79 flow [2022-11-25 17:11:23,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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) [2022-11-25 17:11:23,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:11:23,050 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:11:23,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:11:23,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:11:23,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:23,051 INFO L85 PathProgramCache]: Analyzing trace with hash 859672379, now seen corresponding path program 1 times [2022-11-25 17:11:23,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:23,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531716365] [2022-11-25 17:11:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:23,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:23,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:23,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:23,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531716365] [2022-11-25 17:11:23,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531716365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:11:23,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:11:23,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:11:23,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174031669] [2022-11-25 17:11:23,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:11:23,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:11:23,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:23,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:11:23,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:11:23,177 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 141 [2022-11-25 17:11:23,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 79 flow. Second operand has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 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) [2022-11-25 17:11:23,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:11:23,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 141 [2022-11-25 17:11:23,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:11:23,312 INFO L130 PetriNetUnfolder]: 72/169 cut-off events. [2022-11-25 17:11:23,312 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2022-11-25 17:11:23,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 169 events. 72/169 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 526 event pairs, 17 based on Foata normal form. 4/173 useless extension candidates. Maximal degree in co-relation 288. Up to 89 conditions per place. [2022-11-25 17:11:23,314 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 36 selfloop transitions, 5 changer transitions 2/43 dead transitions. [2022-11-25 17:11:23,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 221 flow [2022-11-25 17:11:23,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:11:23,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:11:23,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 429 transitions. [2022-11-25 17:11:23,320 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6085106382978723 [2022-11-25 17:11:23,320 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 429 transitions. [2022-11-25 17:11:23,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 429 transitions. [2022-11-25 17:11:23,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:11:23,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 429 transitions. [2022-11-25 17:11:23,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 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) [2022-11-25 17:11:23,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2022-11-25 17:11:23,326 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2022-11-25 17:11:23,326 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 79 flow. Second operand 5 states and 429 transitions. [2022-11-25 17:11:23,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 221 flow [2022-11-25 17:11:23,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 213 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 17:11:23,329 INFO L231 Difference]: Finished difference. Result has 36 places, 23 transitions, 92 flow [2022-11-25 17:11:23,329 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=36, PETRI_TRANSITIONS=23} [2022-11-25 17:11:23,330 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2022-11-25 17:11:23,330 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 23 transitions, 92 flow [2022-11-25 17:11:23,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 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) [2022-11-25 17:11:23,331 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:11:23,331 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:11:23,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:11:23,332 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:11:23,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:23,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1163183095, now seen corresponding path program 1 times [2022-11-25 17:11:23,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:23,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490706289] [2022-11-25 17:11:23,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:23,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:11:23,362 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:11:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:11:23,404 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:11:23,405 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:11:23,406 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-11-25 17:11:23,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-25 17:11:23,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-11-25 17:11:23,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-11-25 17:11:23,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-11-25 17:11:23,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:11:23,411 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-25 17:11:23,419 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:11:23,419 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:11:23,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:11:23 BasicIcfg [2022-11-25 17:11:23,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:11:23,468 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:11:23,468 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:11:23,468 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:11:23,469 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:11:17" (3/4) ... [2022-11-25 17:11:23,471 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 17:11:23,545 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f7a3ad-dde4-40c5-ae10-1353914bbe9d/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:11:23,547 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:11:23,548 INFO L158 Benchmark]: Toolchain (without parser) took 7314.90ms. Allocated memory was 203.4MB in the beginning and 247.5MB in the end (delta: 44.0MB). Free memory was 172.2MB in the beginning and 175.3MB in the end (delta: -3.1MB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. [2022-11-25 17:11:23,548 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 130.0MB. Free memory is still 98.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:11:23,549 INFO L158 Benchmark]: CACSL2BoogieTranslator took 685.71ms. Allocated memory is still 203.4MB. Free memory was 172.2MB in the beginning and 161.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 17:11:23,549 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.91ms. Allocated memory is still 203.4MB. Free memory was 161.3MB in the beginning and 159.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:11:23,549 INFO L158 Benchmark]: Boogie Preprocessor took 30.21ms. Allocated memory is still 203.4MB. Free memory was 159.2MB in the beginning and 158.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:11:23,550 INFO L158 Benchmark]: RCFGBuilder took 573.54ms. Allocated memory is still 203.4MB. Free memory was 158.2MB in the beginning and 143.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 17:11:23,552 INFO L158 Benchmark]: TraceAbstraction took 5895.86ms. Allocated memory was 203.4MB in the beginning and 247.5MB in the end (delta: 44.0MB). Free memory was 142.4MB in the beginning and 179.5MB in the end (delta: -37.1MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2022-11-25 17:11:23,553 INFO L158 Benchmark]: Witness Printer took 79.30ms. Allocated memory is still 247.5MB. Free memory was 179.5MB in the beginning and 175.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 17:11:23,555 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 130.0MB. Free memory is still 98.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 685.71ms. Allocated memory is still 203.4MB. Free memory was 172.2MB in the beginning and 161.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.91ms. Allocated memory is still 203.4MB. Free memory was 161.3MB in the beginning and 159.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.21ms. Allocated memory is still 203.4MB. Free memory was 159.2MB in the beginning and 158.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 573.54ms. Allocated memory is still 203.4MB. Free memory was 158.2MB in the beginning and 143.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5895.86ms. Allocated memory was 203.4MB in the beginning and 247.5MB in the end (delta: 44.0MB). Free memory was 142.4MB in the beginning and 179.5MB in the end (delta: -37.1MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * Witness Printer took 79.30ms. Allocated memory is still 247.5MB. Free memory was 179.5MB in the beginning and 175.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6s, 80 PlacesBefore, 30 PlacesAfterwards, 70 TransitionsBefore, 20 TransitionsAfterwards, 814 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 50 TotalNumberOfCompositions, 1699 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1051, independent: 967, independent conditional: 0, independent unconditional: 967, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 566, independent: 547, independent conditional: 0, independent unconditional: 547, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 566, independent: 540, independent conditional: 0, independent unconditional: 540, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 98, independent: 43, independent conditional: 0, independent unconditional: 43, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1051, independent: 420, independent conditional: 0, independent unconditional: 420, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 566, unknown conditional: 0, unknown unconditional: 566] , Statistics on independence cache: Total cache size (in pairs): 81, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}, pthread_create(&t1, 0, thread1, 0)=0, t1={5:0}, t2={6:0}, t3={7:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t2, 0, thread2, 0)=1, pthread_mutex_lock(&mutex)=0, t1={5:0}, t2={6:0}, t3={7:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t3, 0, thread3, 0)=2, pthread_mutex_lock(&mutex)=0, t1={5:0}, t2={6:0}, t3={7:0}] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L709] 1 return 0; [L714] 2 data+=2 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L716] 2 return 0; [L721] COND TRUE 3 data >= 3 [L722] 3 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 123 locations, 5 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: 5.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 100 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 241 IncrementalHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 7 mSDtfsCounter, 241 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=4, InterpolantAutomatonStates: 15, 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, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 105 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-25 17:11:23,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f7a3ad-dde4-40c5-ae10-1353914bbe9d/bin/uautomizer-ZsLfNo2U6R/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE