./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-1_3-join.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_8ebd4501-4623-452a-8cc4-abf276497fa3/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebd4501-4623-452a-8cc4-abf276497fa3/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebd4501-4623-452a-8cc4-abf276497fa3/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebd4501-4623-452a-8cc4-abf276497fa3/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-1_3-join.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebd4501-4623-452a-8cc4-abf276497fa3/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebd4501-4623-452a-8cc4-abf276497fa3/bin/uautomizer-TMbwUNV5ro --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 8c7f2059024755e8d2127555397365a96bb56530f6a4795548fd916204307c42 --- 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-8393723 [2022-11-18 20:58:12,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:58:12,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:58:12,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:58:12,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:58:12,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:58:12,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:58:12,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:58:12,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:58:12,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:58:12,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:58:12,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:58:12,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:58:12,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:58:12,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:58:12,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:58:12,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:58:12,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:58:12,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:58:12,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:58:12,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:58:12,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:58:12,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:58:12,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:58:12,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:58:12,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:58:12,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:58:12,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:58:12,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:58:12,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:58:12,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:58:12,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:58:12,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:58:12,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:58:12,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:58:12,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:58:12,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:58:12,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:58:12,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:58:12,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:58:12,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:58:12,961 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebd4501-4623-452a-8cc4-abf276497fa3/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:58:13,002 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:58:13,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:58:13,003 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:58:13,003 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:58:13,004 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:58:13,004 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:58:13,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:58:13,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:58:13,005 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:58:13,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:58:13,009 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:58:13,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:58:13,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:58:13,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:58:13,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:58:13,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:58:13,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:58:13,011 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:58:13,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:58:13,012 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:58:13,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:58:13,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:58:13,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:58:13,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:58:13,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:58:13,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:58:13,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:58:13,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:58:13,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:58:13,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:58:13,015 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:58:13,015 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:58:13,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:58:13,016 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_8ebd4501-4623-452a-8cc4-abf276497fa3/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebd4501-4623-452a-8cc4-abf276497fa3/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c7f2059024755e8d2127555397365a96bb56530f6a4795548fd916204307c42 [2022-11-18 20:58:13,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:58:13,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:58:13,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:58:13,400 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:58:13,401 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:58:13,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebd4501-4623-452a-8cc4-abf276497fa3/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-races/race-1_3-join.i [2022-11-18 20:58:13,468 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebd4501-4623-452a-8cc4-abf276497fa3/bin/uautomizer-TMbwUNV5ro/data/d5a3ef947/1638f65c94574711aed11173caa42833/FLAG3336db8b8 [2022-11-18 20:58:14,181 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:58:14,182 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebd4501-4623-452a-8cc4-abf276497fa3/sv-benchmarks/c/ldv-races/race-1_3-join.i [2022-11-18 20:58:14,201 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebd4501-4623-452a-8cc4-abf276497fa3/bin/uautomizer-TMbwUNV5ro/data/d5a3ef947/1638f65c94574711aed11173caa42833/FLAG3336db8b8 [2022-11-18 20:58:14,336 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebd4501-4623-452a-8cc4-abf276497fa3/bin/uautomizer-TMbwUNV5ro/data/d5a3ef947/1638f65c94574711aed11173caa42833 [2022-11-18 20:58:14,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:58:14,340 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:58:14,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:58:14,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:58:14,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:58:14,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:58:14" (1/1) ... [2022-11-18 20:58:14,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194f97c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:14, skipping insertion in model container [2022-11-18 20:58:14,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:58:14" (1/1) ... [2022-11-18 20:58:14,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:58:14,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:58:15,253 WARN L234 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_8ebd4501-4623-452a-8cc4-abf276497fa3/sv-benchmarks/c/ldv-races/race-1_3-join.i[76153,76166] [2022-11-18 20:58:15,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:58:15,323 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:58:15,383 WARN L234 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_8ebd4501-4623-452a-8cc4-abf276497fa3/sv-benchmarks/c/ldv-races/race-1_3-join.i[76153,76166] [2022-11-18 20:58:15,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:58:15,518 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:58:15,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:15 WrapperNode [2022-11-18 20:58:15,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:58:15,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:58:15,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:58:15,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:58:15,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:15" (1/1) ... [2022-11-18 20:58:15,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:15" (1/1) ... [2022-11-18 20:58:15,600 INFO L138 Inliner]: procedures = 482, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2022-11-18 20:58:15,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:58:15,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:58:15,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:58:15,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:58:15,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:15" (1/1) ... [2022-11-18 20:58:15,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:15" (1/1) ... [2022-11-18 20:58:15,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:15" (1/1) ... [2022-11-18 20:58:15,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:15" (1/1) ... [2022-11-18 20:58:15,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:15" (1/1) ... [2022-11-18 20:58:15,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:15" (1/1) ... [2022-11-18 20:58:15,670 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:15" (1/1) ... [2022-11-18 20:58:15,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:15" (1/1) ... [2022-11-18 20:58:15,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:58:15,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:58:15,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:58:15,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:58:15,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:15" (1/1) ... [2022-11-18 20:58:15,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:58:15,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebd4501-4623-452a-8cc4-abf276497fa3/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:58:15,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebd4501-4623-452a-8cc4-abf276497fa3/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:58:15,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebd4501-4623-452a-8cc4-abf276497fa3/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:58:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:58:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:58:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:58:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:58:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:58:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:58:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:58:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:58:15,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:58:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:58:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:58:15,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:58:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:58:15,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:58:15,771 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:58:16,197 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:58:16,199 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:58:16,375 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:58:16,409 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:58:16,409 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:58:16,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:58:16 BoogieIcfgContainer [2022-11-18 20:58:16,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:58:16,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:58:16,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:58:16,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:58:16,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:58:14" (1/3) ... [2022-11-18 20:58:16,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166fa13f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:58:16, skipping insertion in model container [2022-11-18 20:58:16,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:58:15" (2/3) ... [2022-11-18 20:58:16,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166fa13f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:58:16, skipping insertion in model container [2022-11-18 20:58:16,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:58:16" (3/3) ... [2022-11-18 20:58:16,433 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_3-join.i [2022-11-18 20:58:16,443 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:58:16,455 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:58:16,455 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-18 20:58:16,455 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:58:16,513 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 20:58:16,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 106 transitions, 220 flow [2022-11-18 20:58:16,623 INFO L130 PetriNetUnfolder]: 4/123 cut-off events. [2022-11-18 20:58:16,624 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:58:16,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 123 events. 4/123 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 171 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 76. Up to 3 conditions per place. [2022-11-18 20:58:16,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 106 transitions, 220 flow [2022-11-18 20:58:16,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 92 transitions, 190 flow [2022-11-18 20:58:16,649 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:58:16,656 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;@bee100f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:58:16,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-18 20:58:16,668 INFO L130 PetriNetUnfolder]: 0/34 cut-off events. [2022-11-18 20:58:16,668 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:58:16,668 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:16,669 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] [2022-11-18 20:58:16,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-18 20:58:16,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:16,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1804612646, now seen corresponding path program 1 times [2022-11-18 20:58:16,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:16,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013993541] [2022-11-18 20:58:16,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:16,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:17,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:17,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:17,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013993541] [2022-11-18 20:58:17,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013993541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:17,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:17,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:58:17,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685519671] [2022-11-18 20:58:17,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:17,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:58:17,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:17,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:58:17,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:58:17,333 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 106 [2022-11-18 20:58:17,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 92 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 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) [2022-11-18 20:58:17,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:17,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 106 [2022-11-18 20:58:17,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:58:17,474 INFO L130 PetriNetUnfolder]: 3/105 cut-off events. [2022-11-18 20:58:17,475 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:58:17,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 105 events. 3/105 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 117 event pairs, 0 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 39. Up to 12 conditions per place. [2022-11-18 20:58:17,477 INFO L137 encePairwiseOnDemand]: 91/106 looper letters, 15 selfloop transitions, 13 changer transitions 1/92 dead transitions. [2022-11-18 20:58:17,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 92 transitions, 248 flow [2022-11-18 20:58:17,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:58:17,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:58:17,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 556 transitions. [2022-11-18 20:58:17,496 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7493261455525606 [2022-11-18 20:58:17,497 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 556 transitions. [2022-11-18 20:58:17,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 556 transitions. [2022-11-18 20:58:17,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:58:17,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 556 transitions. [2022-11-18 20:58:17,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.42857142857143) internal successors, (556), 7 states have internal predecessors, (556), 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) [2022-11-18 20:58:17,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 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) [2022-11-18 20:58:17,517 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 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) [2022-11-18 20:58:17,520 INFO L175 Difference]: Start difference. First operand has 93 places, 92 transitions, 190 flow. Second operand 7 states and 556 transitions. [2022-11-18 20:58:17,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 92 transitions, 248 flow [2022-11-18 20:58:17,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 244 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:58:17,528 INFO L231 Difference]: Finished difference. Result has 95 places, 89 transitions, 222 flow [2022-11-18 20:58:17,530 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=222, PETRI_PLACES=95, PETRI_TRANSITIONS=89} [2022-11-18 20:58:17,535 INFO L288 CegarLoopForPetriNet]: 93 programPoint places, 2 predicate places. [2022-11-18 20:58:17,535 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 222 flow [2022-11-18 20:58:17,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 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) [2022-11-18 20:58:17,536 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:17,536 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] [2022-11-18 20:58:17,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:58:17,537 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-18 20:58:17,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:17,538 INFO L85 PathProgramCache]: Analyzing trace with hash -706371731, now seen corresponding path program 1 times [2022-11-18 20:58:17,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:17,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282127149] [2022-11-18 20:58:17,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:17,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:17,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:17,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:17,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282127149] [2022-11-18 20:58:17,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282127149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:17,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:17,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:58:17,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500465307] [2022-11-18 20:58:17,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:17,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:58:17,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:17,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:58:17,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:58:17,771 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 106 [2022-11-18 20:58:17,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 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) [2022-11-18 20:58:17,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:17,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 106 [2022-11-18 20:58:17,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:58:17,954 INFO L130 PetriNetUnfolder]: 3/101 cut-off events. [2022-11-18 20:58:17,954 INFO L131 PetriNetUnfolder]: For 18/20 co-relation queries the response was YES. [2022-11-18 20:58:17,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 101 events. 3/101 cut-off events. For 18/20 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 0 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 99. Up to 13 conditions per place. [2022-11-18 20:58:17,957 INFO L137 encePairwiseOnDemand]: 95/106 looper letters, 17 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2022-11-18 20:58:17,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 286 flow [2022-11-18 20:58:17,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:58:17,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:58:17,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 552 transitions. [2022-11-18 20:58:17,975 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7439353099730458 [2022-11-18 20:58:17,975 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 552 transitions. [2022-11-18 20:58:17,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 552 transitions. [2022-11-18 20:58:17,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:58:17,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 552 transitions. [2022-11-18 20:58:17,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 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) [2022-11-18 20:58:17,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 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) [2022-11-18 20:58:17,984 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 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) [2022-11-18 20:58:17,985 INFO L175 Difference]: Start difference. First operand has 95 places, 89 transitions, 222 flow. Second operand 7 states and 552 transitions. [2022-11-18 20:58:17,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 286 flow [2022-11-18 20:58:17,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 90 transitions, 276 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:58:17,992 INFO L231 Difference]: Finished difference. Result has 97 places, 88 transitions, 240 flow [2022-11-18 20:58:17,992 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=97, PETRI_TRANSITIONS=88} [2022-11-18 20:58:17,993 INFO L288 CegarLoopForPetriNet]: 93 programPoint places, 4 predicate places. [2022-11-18 20:58:17,993 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 88 transitions, 240 flow [2022-11-18 20:58:17,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 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) [2022-11-18 20:58:17,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:17,995 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] [2022-11-18 20:58:17,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:58:17,995 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-18 20:58:17,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:17,996 INFO L85 PathProgramCache]: Analyzing trace with hash 67808399, now seen corresponding path program 1 times [2022-11-18 20:58:17,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:17,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54474985] [2022-11-18 20:58:17,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:17,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:18,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:18,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:18,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54474985] [2022-11-18 20:58:18,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54474985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:18,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:18,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:58:18,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305960487] [2022-11-18 20:58:18,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:18,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:58:18,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:18,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:58:18,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:58:18,168 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 106 [2022-11-18 20:58:18,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 88 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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) [2022-11-18 20:58:18,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:58:18,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 106 [2022-11-18 20:58:18,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:58:18,220 INFO L130 PetriNetUnfolder]: 2/110 cut-off events. [2022-11-18 20:58:18,220 INFO L131 PetriNetUnfolder]: For 40/42 co-relation queries the response was YES. [2022-11-18 20:58:18,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 110 events. 2/110 cut-off events. For 40/42 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 3/112 useless extension candidates. Maximal degree in co-relation 112. Up to 15 conditions per place. [2022-11-18 20:58:18,221 INFO L137 encePairwiseOnDemand]: 101/106 looper letters, 11 selfloop transitions, 5 changer transitions 11/90 dead transitions. [2022-11-18 20:58:18,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 283 flow [2022-11-18 20:58:18,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:58:18,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:58:18,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2022-11-18 20:58:18,223 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8773584905660378 [2022-11-18 20:58:18,224 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2022-11-18 20:58:18,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2022-11-18 20:58:18,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:58:18,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2022-11-18 20:58:18,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2022-11-18 20:58:18,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2022-11-18 20:58:18,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2022-11-18 20:58:18,227 INFO L175 Difference]: Start difference. First operand has 97 places, 88 transitions, 240 flow. Second operand 3 states and 279 transitions. [2022-11-18 20:58:18,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 283 flow [2022-11-18 20:58:18,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 90 transitions, 265 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 20:58:18,231 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 212 flow [2022-11-18 20:58:18,232 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2022-11-18 20:58:18,234 INFO L288 CegarLoopForPetriNet]: 93 programPoint places, 3 predicate places. [2022-11-18 20:58:18,235 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 212 flow [2022-11-18 20:58:18,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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) [2022-11-18 20:58:18,235 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:58:18,236 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] [2022-11-18 20:58:18,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:58:18,236 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-18 20:58:18,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:18,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1930051597, now seen corresponding path program 1 times [2022-11-18 20:58:18,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:18,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547248161] [2022-11-18 20:58:18,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:18,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:58:18,309 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:58:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:58:18,380 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:58:18,380 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:58:18,381 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-11-18 20:58:18,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-18 20:58:18,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-11-18 20:58:18,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-11-18 20:58:18,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-11-18 20:58:18,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:58:18,385 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-18 20:58:18,396 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:58:18,396 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:58:18,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:58:18 BasicIcfg [2022-11-18 20:58:18,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:58:18,462 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:58:18,462 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:58:18,462 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:58:18,463 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:58:16" (3/4) ... [2022-11-18 20:58:18,465 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-18 20:58:18,553 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebd4501-4623-452a-8cc4-abf276497fa3/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:58:18,559 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:58:18,560 INFO L158 Benchmark]: Toolchain (without parser) took 4219.59ms. Allocated memory was 117.4MB in the beginning and 148.9MB in the end (delta: 31.5MB). Free memory was 73.1MB in the beginning and 117.0MB in the end (delta: -43.9MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. [2022-11-18 20:58:18,561 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 93.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:58:18,563 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1177.07ms. Allocated memory is still 117.4MB. Free memory was 72.8MB in the beginning and 49.6MB in the end (delta: 23.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-18 20:58:18,564 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.01ms. Allocated memory is still 117.4MB. Free memory was 49.6MB in the beginning and 46.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 20:58:18,564 INFO L158 Benchmark]: Boogie Preprocessor took 76.40ms. Allocated memory is still 117.4MB. Free memory was 46.3MB in the beginning and 92.0MB in the end (delta: -45.6MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2022-11-18 20:58:18,565 INFO L158 Benchmark]: RCFGBuilder took 734.22ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 71.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-18 20:58:18,565 INFO L158 Benchmark]: TraceAbstraction took 2046.23ms. Allocated memory was 117.4MB in the beginning and 148.9MB in the end (delta: 31.5MB). Free memory was 70.3MB in the beginning and 47.6MB in the end (delta: 22.7MB). Peak memory consumption was 53.4MB. Max. memory is 16.1GB. [2022-11-18 20:58:18,568 INFO L158 Benchmark]: Witness Printer took 97.15ms. Allocated memory is still 148.9MB. Free memory was 47.6MB in the beginning and 117.0MB in the end (delta: -69.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:58:18,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 93.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1177.07ms. Allocated memory is still 117.4MB. Free memory was 72.8MB in the beginning and 49.6MB in the end (delta: 23.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.01ms. Allocated memory is still 117.4MB. Free memory was 49.6MB in the beginning and 46.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.40ms. Allocated memory is still 117.4MB. Free memory was 46.3MB in the beginning and 92.0MB in the end (delta: -45.6MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * RCFGBuilder took 734.22ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 71.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2046.23ms. Allocated memory was 117.4MB in the beginning and 148.9MB in the end (delta: 31.5MB). Free memory was 70.3MB in the beginning and 47.6MB in the end (delta: 22.7MB). Peak memory consumption was 53.4MB. Max. memory is 16.1GB. * Witness Printer took 97.15ms. Allocated memory is still 148.9MB. Free memory was 47.6MB in the beginning and 117.0MB in the end (delta: -69.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1697] 0 pthread_mutex_t mutex; VAL [mutex={3:0}] [L1698] 0 int pdev; VAL [mutex={3:0}, pdev=0] [L1696] 0 pthread_t t1; VAL [mutex={3:0}, pdev=0, t1={4:0}] [L1734] CALL, EXPR 0 module_init() [L1709] 0 pdev = 1 VAL [mutex={3:0}, pdev=1, t1={4:0}] [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) VAL [\old(expression)=1, expression=1, mutex={3:0}, pdev=1, t1={4:0}] [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, mutex={3:0}, pdev=1, t1={4:0}] [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={3:0}, pdev=1, pthread_create(&t1, ((void *)0), thread1, ((void *)0))=-1, t1={4:0}] [L1713] 0 return 0; VAL [\result=0, arg={0:0}, mutex={3:0}, pdev=1, t1={4:0}] [L1734] RET, EXPR 0 module_init() [L1734] COND FALSE 0 !(module_init()!=0) VAL [arg={0:0}, module_init()=0, mutex={3:0}, pdev=1, t1={4:0}] [L1735] CALL 0 module_exit() [L1721] 0 void *status; VAL [arg={0:0}, mutex={3:0}, pdev=1, status={5:0}, t1={4:0}] [L1723] 0 pdev = 4 VAL [arg={0:0}, mutex={3:0}, pdev=4, status={5:0}, t1={4:0}] [L1702] 1 pdev = 6 VAL [arg={0:0}, arg={0:0}, mutex={3:0}, pdev=6, t1={4:0}] [L1726] CALL 0 ldv_assert(pdev==4) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(expression)=0, arg={0:0}, arg={0:0}, expression=0, mutex={3:0}, pdev=6, t1={4:0}] - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: 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 3 procedures, 111 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: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 48 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 84 IncrementalHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 43 mSDtfsCounter, 84 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240occurred in iteration=2, InterpolantAutomatonStates: 17, 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, 0.7s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2022-11-18 20:58:18,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebd4501-4623-452a-8cc4-abf276497fa3/bin/uautomizer-TMbwUNV5ro/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