./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-lit/qw2004-2b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/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_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-lit/qw2004-2b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 --- 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 15:29:30,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:29:30,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:29:30,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:29:30,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:29:30,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:29:30,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:29:30,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:29:30,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:29:30,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:29:31,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:29:31,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:29:31,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:29:31,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:29:31,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:29:31,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:29:31,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:29:31,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:29:31,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:29:31,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:29:31,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:29:31,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:29:31,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:29:31,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:29:31,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:29:31,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:29:31,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:29:31,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:29:31,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:29:31,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:29:31,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:29:31,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:29:31,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:29:31,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:29:31,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:29:31,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:29:31,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:29:31,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:29:31,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:29:31,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:29:31,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:29:31,045 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 15:29:31,070 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:29:31,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:29:31,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:29:31,071 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:29:31,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:29:31,072 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:29:31,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:29:31,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:29:31,073 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:29:31,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:29:31,073 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:29:31,074 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:29:31,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:29:31,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:29:31,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:29:31,075 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 15:29:31,075 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 15:29:31,075 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 15:29:31,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:29:31,076 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 15:29:31,076 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:29:31,076 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:29:31,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:29:31,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:29:31,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:29:31,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:29:31,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:29:31,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:29:31,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:29:31,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:29:31,079 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:29:31,079 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:29:31,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:29:31,079 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_fb16a2a4-e6c7-4acf-becc-e49683932a9f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 [2022-11-25 15:29:31,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:29:31,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:29:31,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:29:31,343 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:29:31,343 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:29:31,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-lit/qw2004-2b.i [2022-11-25 15:29:34,555 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:29:34,986 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:29:34,987 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/sv-benchmarks/c/pthread-lit/qw2004-2b.i [2022-11-25 15:29:35,000 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/data/e38344766/ba09e1364f4348d4b60f17593924fdc2/FLAG91178c80c [2022-11-25 15:29:35,015 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/data/e38344766/ba09e1364f4348d4b60f17593924fdc2 [2022-11-25 15:29:35,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:29:35,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:29:35,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:29:35,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:29:35,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:29:35,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:29:35" (1/1) ... [2022-11-25 15:29:35,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@682715b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:35, skipping insertion in model container [2022-11-25 15:29:35,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:29:35" (1/1) ... [2022-11-25 15:29:35,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:29:35,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:29:35,529 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_fb16a2a4-e6c7-4acf-becc-e49683932a9f/sv-benchmarks/c/pthread-lit/qw2004-2b.i[30003,30016] [2022-11-25 15:29:35,539 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:35,540 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:35,541 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:35,542 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:35,544 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:35,545 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:35,547 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:35,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:35,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:35,554 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:35,557 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:35,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:35,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:35,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:35,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:35,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:35,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:35,565 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:35,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:29:35,584 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:29:35,643 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_fb16a2a4-e6c7-4acf-becc-e49683932a9f/sv-benchmarks/c/pthread-lit/qw2004-2b.i[30003,30016] [2022-11-25 15:29:35,644 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:35,645 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:35,645 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:35,646 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:35,646 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:35,647 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:35,648 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:35,649 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:35,650 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:35,650 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:35,651 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:35,652 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:35,653 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:35,653 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:35,654 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:35,654 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:35,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:35,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:35,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:29:35,695 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:29:35,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:35 WrapperNode [2022-11-25 15:29:35,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:29:35,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:29:35,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:29:35,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:29:35,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:35" (1/1) ... [2022-11-25 15:29:35,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:35" (1/1) ... [2022-11-25 15:29:35,776 INFO L138 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 9, calls inlined = 10, statements flattened = 117 [2022-11-25 15:29:35,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:29:35,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:29:35,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:29:35,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:29:35,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:35" (1/1) ... [2022-11-25 15:29:35,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:35" (1/1) ... [2022-11-25 15:29:35,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:35" (1/1) ... [2022-11-25 15:29:35,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:35" (1/1) ... [2022-11-25 15:29:35,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:35" (1/1) ... [2022-11-25 15:29:35,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:35" (1/1) ... [2022-11-25 15:29:35,832 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:35" (1/1) ... [2022-11-25 15:29:35,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:35" (1/1) ... [2022-11-25 15:29:35,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:29:35,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:29:35,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:29:35,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:29:35,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:35" (1/1) ... [2022-11-25 15:29:35,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:29:35,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:35,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:35,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:29:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2022-11-25 15:29:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2022-11-25 15:29:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:29:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 15:29:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:29:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:29:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:29:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:29:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 15:29:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:29:35,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:29:35,943 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 15:29:36,119 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:29:36,122 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:29:36,397 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:29:36,425 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:29:36,425 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 15:29:36,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:29:36 BoogieIcfgContainer [2022-11-25 15:29:36,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:29:36,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:29:36,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:29:36,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:29:36,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:29:35" (1/3) ... [2022-11-25 15:29:36,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6ac3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:29:36, skipping insertion in model container [2022-11-25 15:29:36,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:35" (2/3) ... [2022-11-25 15:29:36,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6ac3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:29:36, skipping insertion in model container [2022-11-25 15:29:36,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:29:36" (3/3) ... [2022-11-25 15:29:36,440 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2022-11-25 15:29:36,463 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:29:36,464 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-25 15:29:36,464 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:29:36,549 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 15:29:36,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 126 transitions, 257 flow [2022-11-25 15:29:36,761 INFO L130 PetriNetUnfolder]: 6/125 cut-off events. [2022-11-25 15:29:36,761 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:29:36,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 125 events. 6/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 127 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2022-11-25 15:29:36,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 126 transitions, 257 flow [2022-11-25 15:29:36,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 125 transitions, 253 flow [2022-11-25 15:29:36,783 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:29:36,822 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 125 transitions, 253 flow [2022-11-25 15:29:36,826 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 125 transitions, 253 flow [2022-11-25 15:29:36,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 125 transitions, 253 flow [2022-11-25 15:29:36,861 INFO L130 PetriNetUnfolder]: 6/125 cut-off events. [2022-11-25 15:29:36,862 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:29:36,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 125 events. 6/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 127 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2022-11-25 15:29:36,867 INFO L119 LiptonReduction]: Number of co-enabled transitions 4092 [2022-11-25 15:29:40,941 INFO L134 LiptonReduction]: Checked pairs total: 3897 [2022-11-25 15:29:40,941 INFO L136 LiptonReduction]: Total number of compositions: 137 [2022-11-25 15:29:40,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:29:40,978 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@1151c7fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:29:40,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-25 15:29:40,981 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-11-25 15:29:40,982 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:29:40,982 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:40,983 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 15:29:40,983 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 15:29:40,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:40,989 INFO L85 PathProgramCache]: Analyzing trace with hash 488, now seen corresponding path program 1 times [2022-11-25 15:29:40,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:40,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895716529] [2022-11-25 15:29:41,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:41,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:41,132 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 15:29:41,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:41,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895716529] [2022-11-25 15:29:41,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895716529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:41,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:41,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 15:29:41,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606902148] [2022-11-25 15:29:41,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:41,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 15:29:41,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:41,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 15:29:41,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 15:29:41,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 263 [2022-11-25 15:29:41,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 19 transitions, 41 flow. Second operand has 2 states, 2 states have (on average 120.5) internal successors, (241), 2 states have internal predecessors, (241), 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 15:29:41,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:41,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 263 [2022-11-25 15:29:41,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:41,255 INFO L130 PetriNetUnfolder]: 42/90 cut-off events. [2022-11-25 15:29:41,256 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:29:41,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 90 events. 42/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 256 event pairs, 32 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 174. Up to 89 conditions per place. [2022-11-25 15:29:41,260 INFO L137 encePairwiseOnDemand]: 261/263 looper letters, 15 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2022-11-25 15:29:41,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 17 transitions, 69 flow [2022-11-25 15:29:41,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 15:29:41,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 15:29:41,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 258 transitions. [2022-11-25 15:29:41,283 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49049429657794674 [2022-11-25 15:29:41,283 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 258 transitions. [2022-11-25 15:29:41,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 258 transitions. [2022-11-25 15:29:41,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:41,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 258 transitions. [2022-11-25 15:29:41,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 129.0) internal successors, (258), 2 states have internal predecessors, (258), 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 15:29:41,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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 15:29:41,306 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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 15:29:41,308 INFO L175 Difference]: Start difference. First operand has 21 places, 19 transitions, 41 flow. Second operand 2 states and 258 transitions. [2022-11-25 15:29:41,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 17 transitions, 69 flow [2022-11-25 15:29:41,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 17 transitions, 68 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:29:41,313 INFO L231 Difference]: Finished difference. Result has 19 places, 16 transitions, 34 flow [2022-11-25 15:29:41,315 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=34, PETRI_PLACES=19, PETRI_TRANSITIONS=16} [2022-11-25 15:29:41,319 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, -2 predicate places. [2022-11-25 15:29:41,320 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 16 transitions, 34 flow [2022-11-25 15:29:41,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 120.5) internal successors, (241), 2 states have internal predecessors, (241), 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 15:29:41,320 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:41,321 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 15:29:41,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:29:41,321 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 15:29:41,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:41,332 INFO L85 PathProgramCache]: Analyzing trace with hash 14924654, now seen corresponding path program 1 times [2022-11-25 15:29:41,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:41,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931212374] [2022-11-25 15:29:41,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:41,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:41,529 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 15:29:41,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:41,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931212374] [2022-11-25 15:29:41,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931212374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:41,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:41,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:29:41,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110735571] [2022-11-25 15:29:41,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:41,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:29:41,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:41,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:29:41,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:29:41,547 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 263 [2022-11-25 15:29:41,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 16 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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 15:29:41,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:41,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 263 [2022-11-25 15:29:41,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:41,646 INFO L130 PetriNetUnfolder]: 58/132 cut-off events. [2022-11-25 15:29:41,647 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:29:41,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 132 events. 58/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 449 event pairs, 18 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 261. Up to 65 conditions per place. [2022-11-25 15:29:41,652 INFO L137 encePairwiseOnDemand]: 259/263 looper letters, 23 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2022-11-25 15:29:41,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 27 transitions, 108 flow [2022-11-25 15:29:41,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:41,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2022-11-25 15:29:41,659 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4790874524714829 [2022-11-25 15:29:41,659 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 378 transitions. [2022-11-25 15:29:41,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 378 transitions. [2022-11-25 15:29:41,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:41,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 378 transitions. [2022-11-25 15:29:41,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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 15:29:41,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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 15:29:41,667 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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 15:29:41,668 INFO L175 Difference]: Start difference. First operand has 19 places, 16 transitions, 34 flow. Second operand 3 states and 378 transitions. [2022-11-25 15:29:41,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 27 transitions, 108 flow [2022-11-25 15:29:41,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 27 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 15:29:41,670 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 52 flow [2022-11-25 15:29:41,670 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2022-11-25 15:29:41,671 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2022-11-25 15:29:41,672 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 52 flow [2022-11-25 15:29:41,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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 15:29:41,675 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:41,675 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 15:29:41,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:29:41,676 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 15:29:41,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:41,677 INFO L85 PathProgramCache]: Analyzing trace with hash 462623802, now seen corresponding path program 1 times [2022-11-25 15:29:41,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:41,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937078119] [2022-11-25 15:29:41,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:41,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:41,790 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 15:29:41,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:41,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937078119] [2022-11-25 15:29:41,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937078119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:41,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:41,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:29:41,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677574233] [2022-11-25 15:29:41,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:41,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:29:41,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:41,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:29:41,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:29:41,805 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 263 [2022-11-25 15:29:41,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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 15:29:41,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:41,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 263 [2022-11-25 15:29:41,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:41,877 INFO L130 PetriNetUnfolder]: 61/136 cut-off events. [2022-11-25 15:29:41,878 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-11-25 15:29:41,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 136 events. 61/136 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 489 event pairs, 42 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 303. Up to 128 conditions per place. [2022-11-25 15:29:41,879 INFO L137 encePairwiseOnDemand]: 259/263 looper letters, 18 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2022-11-25 15:29:41,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 21 transitions, 100 flow [2022-11-25 15:29:41,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:41,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:41,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2022-11-25 15:29:41,882 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4714828897338403 [2022-11-25 15:29:41,882 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2022-11-25 15:29:41,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2022-11-25 15:29:41,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:41,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2022-11-25 15:29:41,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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 15:29:41,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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 15:29:41,888 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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 15:29:41,888 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 52 flow. Second operand 3 states and 372 transitions. [2022-11-25 15:29:41,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 21 transitions, 100 flow [2022-11-25 15:29:41,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 21 transitions, 94 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:29:41,890 INFO L231 Difference]: Finished difference. Result has 23 places, 18 transitions, 60 flow [2022-11-25 15:29:41,890 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=23, PETRI_TRANSITIONS=18} [2022-11-25 15:29:41,891 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 2 predicate places. [2022-11-25 15:29:41,891 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 60 flow [2022-11-25 15:29:41,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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 15:29:41,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:41,892 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 15:29:41,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:29:41,893 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 15:29:41,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:41,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1457410070, now seen corresponding path program 1 times [2022-11-25 15:29:41,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:41,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303753129] [2022-11-25 15:29:41,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:41,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:41,992 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 15:29:42,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:42,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303753129] [2022-11-25 15:29:42,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303753129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:42,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:42,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:29:42,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548535856] [2022-11-25 15:29:42,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:42,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:29:42,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:42,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:29:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:29:42,011 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 263 [2022-11-25 15:29:42,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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 15:29:42,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:42,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 263 [2022-11-25 15:29:42,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:42,090 INFO L130 PetriNetUnfolder]: 52/128 cut-off events. [2022-11-25 15:29:42,090 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-11-25 15:29:42,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 128 events. 52/128 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 464 event pairs, 26 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 305. Up to 97 conditions per place. [2022-11-25 15:29:42,093 INFO L137 encePairwiseOnDemand]: 259/263 looper letters, 23 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2022-11-25 15:29:42,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 27 transitions, 144 flow [2022-11-25 15:29:42,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:42,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:42,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2022-11-25 15:29:42,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4752851711026616 [2022-11-25 15:29:42,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2022-11-25 15:29:42,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2022-11-25 15:29:42,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:42,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2022-11-25 15:29:42,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 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 15:29:42,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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 15:29:42,102 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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 15:29:42,102 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 60 flow. Second operand 3 states and 375 transitions. [2022-11-25 15:29:42,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 27 transitions, 144 flow [2022-11-25 15:29:42,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:29:42,104 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 78 flow [2022-11-25 15:29:42,105 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2022-11-25 15:29:42,107 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 5 predicate places. [2022-11-25 15:29:42,107 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 78 flow [2022-11-25 15:29:42,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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 15:29:42,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:42,108 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:42,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:29:42,109 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 15:29:42,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:42,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2095103610, now seen corresponding path program 1 times [2022-11-25 15:29:42,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:42,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135049070] [2022-11-25 15:29:42,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:42,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:42,316 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 15:29:42,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:42,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135049070] [2022-11-25 15:29:42,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135049070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:42,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:42,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:29:42,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544479858] [2022-11-25 15:29:42,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:42,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:29:42,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:42,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:29:42,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:29:42,360 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 263 [2022-11-25 15:29:42,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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 15:29:42,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:42,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 263 [2022-11-25 15:29:42,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:42,403 INFO L130 PetriNetUnfolder]: 45/110 cut-off events. [2022-11-25 15:29:42,404 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-11-25 15:29:42,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 110 events. 45/110 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 383 event pairs, 30 based on Foata normal form. 11/120 useless extension candidates. Maximal degree in co-relation 303. Up to 108 conditions per place. [2022-11-25 15:29:42,405 INFO L137 encePairwiseOnDemand]: 261/263 looper letters, 9 selfloop transitions, 1 changer transitions 7/18 dead transitions. [2022-11-25 15:29:42,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 18 transitions, 110 flow [2022-11-25 15:29:42,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:42,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:42,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2022-11-25 15:29:42,407 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4600760456273764 [2022-11-25 15:29:42,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2022-11-25 15:29:42,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2022-11-25 15:29:42,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:42,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2022-11-25 15:29:42,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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 15:29:42,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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 15:29:42,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 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 15:29:42,412 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 78 flow. Second operand 3 states and 363 transitions. [2022-11-25 15:29:42,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 18 transitions, 110 flow [2022-11-25 15:29:42,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 18 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:29:42,415 INFO L231 Difference]: Finished difference. Result has 25 places, 11 transitions, 42 flow [2022-11-25 15:29:42,415 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=25, PETRI_TRANSITIONS=11} [2022-11-25 15:29:42,416 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 4 predicate places. [2022-11-25 15:29:42,416 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 11 transitions, 42 flow [2022-11-25 15:29:42,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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 15:29:42,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:42,417 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:42,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:29:42,418 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 15:29:42,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:42,419 INFO L85 PathProgramCache]: Analyzing trace with hash 529853568, now seen corresponding path program 1 times [2022-11-25 15:29:42,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:42,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955335703] [2022-11-25 15:29:42,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:42,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:42,741 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 15:29:42,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:42,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955335703] [2022-11-25 15:29:42,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955335703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:42,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:42,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:29:42,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544803072] [2022-11-25 15:29:42,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:42,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:29:42,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:42,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:29:42,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:29:42,885 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 263 [2022-11-25 15:29:42,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 11 transitions, 42 flow. Second operand has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 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 15:29:42,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:42,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 263 [2022-11-25 15:29:42,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:43,029 INFO L130 PetriNetUnfolder]: 17/60 cut-off events. [2022-11-25 15:29:43,029 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 15:29:43,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 60 events. 17/60 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 192 event pairs, 0 based on Foata normal form. 2/62 useless extension candidates. Maximal degree in co-relation 145. Up to 39 conditions per place. [2022-11-25 15:29:43,030 INFO L137 encePairwiseOnDemand]: 257/263 looper letters, 11 selfloop transitions, 7 changer transitions 4/22 dead transitions. [2022-11-25 15:29:43,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 114 flow [2022-11-25 15:29:43,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 15:29:43,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 15:29:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 862 transitions. [2022-11-25 15:29:43,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4096958174904943 [2022-11-25 15:29:43,037 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 862 transitions. [2022-11-25 15:29:43,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 862 transitions. [2022-11-25 15:29:43,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:43,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 862 transitions. [2022-11-25 15:29:43,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 107.75) internal successors, (862), 8 states have internal predecessors, (862), 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 15:29:43,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 263.0) internal successors, (2367), 9 states have internal predecessors, (2367), 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 15:29:43,047 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 263.0) internal successors, (2367), 9 states have internal predecessors, (2367), 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 15:29:43,047 INFO L175 Difference]: Start difference. First operand has 25 places, 11 transitions, 42 flow. Second operand 8 states and 862 transitions. [2022-11-25 15:29:43,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 114 flow [2022-11-25 15:29:43,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 22 transitions, 109 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-25 15:29:43,049 INFO L231 Difference]: Finished difference. Result has 29 places, 16 transitions, 79 flow [2022-11-25 15:29:43,050 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=79, PETRI_PLACES=29, PETRI_TRANSITIONS=16} [2022-11-25 15:29:43,052 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 8 predicate places. [2022-11-25 15:29:43,053 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 16 transitions, 79 flow [2022-11-25 15:29:43,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 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 15:29:43,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:43,054 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:43,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:29:43,054 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 15:29:43,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:43,055 INFO L85 PathProgramCache]: Analyzing trace with hash 406874264, now seen corresponding path program 2 times [2022-11-25 15:29:43,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:43,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422979601] [2022-11-25 15:29:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:43,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:43,081 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:29:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:43,120 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:29:43,121 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 15:29:43,122 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2022-11-25 15:29:43,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2022-11-25 15:29:43,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2022-11-25 15:29:43,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2022-11-25 15:29:43,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-11-25 15:29:43,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:29:43,126 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-11-25 15:29:43,131 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 15:29:43,131 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 15:29:43,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 03:29:43 BasicIcfg [2022-11-25 15:29:43,178 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 15:29:43,178 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 15:29:43,178 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 15:29:43,179 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 15:29:43,179 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:29:36" (3/4) ... [2022-11-25 15:29:43,183 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 15:29:43,183 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 15:29:43,184 INFO L158 Benchmark]: Toolchain (without parser) took 8164.41ms. Allocated memory was 144.7MB in the beginning and 176.2MB in the end (delta: 31.5MB). Free memory was 111.0MB in the beginning and 53.2MB in the end (delta: 57.8MB). Peak memory consumption was 90.9MB. Max. memory is 16.1GB. [2022-11-25 15:29:43,184 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 144.7MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:29:43,184 INFO L158 Benchmark]: CACSL2BoogieTranslator took 675.53ms. Allocated memory is still 144.7MB. Free memory was 111.0MB in the beginning and 88.9MB in the end (delta: 22.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-25 15:29:43,185 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.80ms. Allocated memory is still 144.7MB. Free memory was 88.9MB in the beginning and 86.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:29:43,185 INFO L158 Benchmark]: Boogie Preprocessor took 65.63ms. Allocated memory is still 144.7MB. Free memory was 86.8MB in the beginning and 85.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:29:43,186 INFO L158 Benchmark]: RCFGBuilder took 584.66ms. Allocated memory is still 144.7MB. Free memory was 85.2MB in the beginning and 69.7MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 15:29:43,186 INFO L158 Benchmark]: TraceAbstraction took 6746.42ms. Allocated memory was 144.7MB in the beginning and 176.2MB in the end (delta: 31.5MB). Free memory was 69.1MB in the beginning and 54.3MB in the end (delta: 14.8MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. [2022-11-25 15:29:43,187 INFO L158 Benchmark]: Witness Printer took 4.74ms. Allocated memory is still 176.2MB. Free memory was 54.3MB in the beginning and 53.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:29:43,189 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 144.7MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 675.53ms. Allocated memory is still 144.7MB. Free memory was 111.0MB in the beginning and 88.9MB in the end (delta: 22.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.80ms. Allocated memory is still 144.7MB. Free memory was 88.9MB in the beginning and 86.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.63ms. Allocated memory is still 144.7MB. Free memory was 86.8MB in the beginning and 85.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 584.66ms. Allocated memory is still 144.7MB. Free memory was 85.2MB in the beginning and 69.7MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6746.42ms. Allocated memory was 144.7MB in the beginning and 176.2MB in the end (delta: 31.5MB). Free memory was 69.1MB in the beginning and 54.3MB in the end (delta: 14.8MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. * Witness Printer took 4.74ms. Allocated memory is still 176.2MB. Free memory was 54.3MB in the beginning and 53.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 123 PlacesBefore, 21 PlacesAfterwards, 125 TransitionsBefore, 19 TransitionsAfterwards, 4092 CoEnabledTransitionPairs, 5 FixpointIterations, 32 TrivialSequentialCompositions, 77 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 4 ChoiceCompositions, 137 TotalNumberOfCompositions, 3897 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3431, independent: 3370, independent conditional: 0, independent unconditional: 3370, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2979, independent: 2937, independent conditional: 0, independent unconditional: 2937, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2979, independent: 2931, independent conditional: 0, independent unconditional: 2931, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 48, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 155, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 145, dependent conditional: 0, dependent unconditional: 145, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3431, independent: 433, independent conditional: 0, independent unconditional: 433, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 2979, unknown conditional: 0, unknown unconditional: 2979] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 53, Positive conditional cache size: 0, Positive unconditional cache size: 53, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 690]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 690. Possible FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L756] 0 pthread_t t; [L757] 0 pendingIo = 1 [L758] 0 stoppingFlag = 0 [L759] 0 stoppingEvent = 0 [L760] 0 stopped = 0 [L761] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, pthread_create(&t, 0, BCSP_PnpStop, 0)=-1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L762] CALL 0 BCSP_PnpAdd(0) [L734] 0 int status; [L735] CALL, EXPR 0 BCSP_IoIncrement() [L703] 0 int lsf = stoppingFlag; [L705] COND FALSE 0 !(\read(lsf)) VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L745] 1 stoppingFlag = 1 [L747] CALL 1 BCSP_IoDecrement() [L725] 1 int pending; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L709] 0 int lp = pendingIo; VAL [lp=1, lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L726] CALL, EXPR 1 dec() [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; [L722] 1 return tmp; [L726] RET, EXPR 1 dec() [L726] 1 pending = dec() [L712] 0 pendingIo = lp + 1 [L715] 0 return 0; [L735] RET, EXPR 0 BCSP_IoIncrement() [L727] COND TRUE 1 pending == 0 [L729] 1 stoppingEvent = 1 [L747] RET 1 BCSP_IoDecrement() [L749] 1 int lse = stoppingEvent; [L751] CALL 1 assume_abort_if_not(lse) [L686] COND FALSE 1 !(!cond) [L751] RET 1 assume_abort_if_not(lse) [L752] 1 stopped = 1 [L753] 1 return 0; [L735] 0 status = BCSP_IoIncrement() [L736] COND TRUE 0 status == 0 [L737] 0 int local_assertion = !stopped; [L738] CALL 0 __VERIFIER_assert(local_assertion) [L689] COND TRUE 0 !(cond) [L690] 0 reach_error() VAL [\old(cond)=0, cond=0, pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 755]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 761]: 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, 152 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: 6.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 82 mSDsluCounter, 73 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 59 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 346 IncrementalHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 14 mSDtfsCounter, 346 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=6, InterpolantAutomatonStates: 22, 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, 0.8s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 187 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 could not prove your program: unable to determine feasibility of some traces [2022-11-25 15:29:43,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/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_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-lit/qw2004-2b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 --- 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 15:29:45,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:29:45,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:29:45,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:29:45,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:29:45,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:29:45,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:29:45,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:29:45,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:29:45,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:29:45,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:29:45,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:29:45,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:29:46,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:29:46,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:29:46,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:29:46,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:29:46,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:29:46,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:29:46,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:29:46,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:29:46,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:29:46,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:29:46,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:29:46,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:29:46,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:29:46,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:29:46,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:29:46,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:29:46,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:29:46,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:29:46,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:29:46,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:29:46,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:29:46,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:29:46,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:29:46,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:29:46,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:29:46,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:29:46,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:29:46,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:29:46,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 15:29:46,115 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:29:46,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:29:46,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:29:46,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:29:46,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:29:46,118 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:29:46,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:29:46,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:29:46,119 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:29:46,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:29:46,121 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:29:46,121 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:29:46,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:29:46,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:29:46,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:29:46,122 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 15:29:46,122 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 15:29:46,123 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 15:29:46,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:29:46,123 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 15:29:46,123 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 15:29:46,124 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 15:29:46,124 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:29:46,124 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:29:46,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:29:46,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:29:46,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:29:46,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:29:46,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:29:46,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:29:46,126 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 15:29:46,126 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 15:29:46,126 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:29:46,127 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:29:46,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:29:46,127 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 15:29:46,127 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_fb16a2a4-e6c7-4acf-becc-e49683932a9f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 [2022-11-25 15:29:46,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:29:46,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:29:46,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:29:46,598 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:29:46,599 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:29:46,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-lit/qw2004-2b.i [2022-11-25 15:29:49,791 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:29:50,127 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:29:50,128 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/sv-benchmarks/c/pthread-lit/qw2004-2b.i [2022-11-25 15:29:50,141 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/data/210ec200b/a5836f61c79d4c63b3368a92cca61f02/FLAGb8c67c673 [2022-11-25 15:29:50,162 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/data/210ec200b/a5836f61c79d4c63b3368a92cca61f02 [2022-11-25 15:29:50,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:29:50,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:29:50,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:29:50,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:29:50,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:29:50,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:29:50" (1/1) ... [2022-11-25 15:29:50,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28356c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:50, skipping insertion in model container [2022-11-25 15:29:50,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:29:50" (1/1) ... [2022-11-25 15:29:50,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:29:50,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:29:50,739 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_fb16a2a4-e6c7-4acf-becc-e49683932a9f/sv-benchmarks/c/pthread-lit/qw2004-2b.i[30003,30016] [2022-11-25 15:29:50,750 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:50,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:50,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:50,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:50,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:50,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:50,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:50,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:50,763 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:50,763 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:50,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:50,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:50,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:50,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:50,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:50,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:50,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:50,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:50,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:29:50,800 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:29:50,882 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_fb16a2a4-e6c7-4acf-becc-e49683932a9f/sv-benchmarks/c/pthread-lit/qw2004-2b.i[30003,30016] [2022-11-25 15:29:50,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:50,885 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:50,886 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:50,887 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:50,888 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:50,889 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:50,891 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:50,893 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:50,894 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:50,895 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:50,896 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:50,898 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:50,899 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:50,900 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:50,900 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:50,904 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:50,904 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:29:50,905 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:29:50,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:29:50,987 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:29:50,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:50 WrapperNode [2022-11-25 15:29:50,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:29:50,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:29:50,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:29:50,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:29:50,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:50" (1/1) ... [2022-11-25 15:29:51,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:50" (1/1) ... [2022-11-25 15:29:51,077 INFO L138 Inliner]: procedures = 178, calls = 36, calls flagged for inlining = 9, calls inlined = 10, statements flattened = 115 [2022-11-25 15:29:51,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:29:51,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:29:51,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:29:51,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:29:51,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:50" (1/1) ... [2022-11-25 15:29:51,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:50" (1/1) ... [2022-11-25 15:29:51,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:50" (1/1) ... [2022-11-25 15:29:51,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:50" (1/1) ... [2022-11-25 15:29:51,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:50" (1/1) ... [2022-11-25 15:29:51,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:50" (1/1) ... [2022-11-25 15:29:51,132 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:50" (1/1) ... [2022-11-25 15:29:51,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:50" (1/1) ... [2022-11-25 15:29:51,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:29:51,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:29:51,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:29:51,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:29:51,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:50" (1/1) ... [2022-11-25 15:29:51,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:29:51,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:51,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:51,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:29:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2022-11-25 15:29:51,264 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2022-11-25 15:29:51,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 15:29:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:29:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:29:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:29:51,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 15:29:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 15:29:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 15:29:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:29:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:29:51,268 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 15:29:51,496 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:29:51,498 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:29:51,784 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:29:51,845 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:29:51,847 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 15:29:51,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:29:51 BoogieIcfgContainer [2022-11-25 15:29:51,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:29:51,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:29:51,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:29:51,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:29:51,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:29:50" (1/3) ... [2022-11-25 15:29:51,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456434e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:29:51, skipping insertion in model container [2022-11-25 15:29:51,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:50" (2/3) ... [2022-11-25 15:29:51,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456434e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:29:51, skipping insertion in model container [2022-11-25 15:29:51,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:29:51" (3/3) ... [2022-11-25 15:29:51,865 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2022-11-25 15:29:51,888 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:29:51,888 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-25 15:29:51,889 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:29:52,031 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 15:29:52,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 124 transitions, 253 flow [2022-11-25 15:29:52,187 INFO L130 PetriNetUnfolder]: 6/123 cut-off events. [2022-11-25 15:29:52,188 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:29:52,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 123 events. 6/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 126 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2022-11-25 15:29:52,195 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 124 transitions, 253 flow [2022-11-25 15:29:52,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 123 transitions, 249 flow [2022-11-25 15:29:52,206 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:29:52,230 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 123 transitions, 249 flow [2022-11-25 15:29:52,235 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 123 transitions, 249 flow [2022-11-25 15:29:52,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 123 transitions, 249 flow [2022-11-25 15:29:52,287 INFO L130 PetriNetUnfolder]: 6/123 cut-off events. [2022-11-25 15:29:52,288 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:29:52,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 123 events. 6/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 127 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2022-11-25 15:29:52,294 INFO L119 LiptonReduction]: Number of co-enabled transitions 3840 [2022-11-25 15:29:59,115 INFO L134 LiptonReduction]: Checked pairs total: 3885 [2022-11-25 15:29:59,115 INFO L136 LiptonReduction]: Total number of compositions: 133 [2022-11-25 15:29:59,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:29:59,153 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@23c4681f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:29:59,153 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-25 15:29:59,156 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 15:29:59,156 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:29:59,157 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:59,158 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 15:29:59,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 15:29:59,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:59,165 INFO L85 PathProgramCache]: Analyzing trace with hash 482, now seen corresponding path program 1 times [2022-11-25 15:29:59,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:29:59,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111531609] [2022-11-25 15:29:59,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:59,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:29:59,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:29:59,188 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:29:59,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 15:29:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:59,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 15:29:59,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:59,269 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 15:29:59,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:29:59,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:29:59,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111531609] [2022-11-25 15:29:59,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111531609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:59,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:59,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 15:29:59,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27837241] [2022-11-25 15:29:59,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:59,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 15:29:59,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:29:59,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 15:29:59,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 15:29:59,318 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 257 [2022-11-25 15:29:59,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 19 transitions, 41 flow. Second operand has 2 states, 2 states have (on average 118.5) internal successors, (237), 2 states have internal predecessors, (237), 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 15:29:59,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:59,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 257 [2022-11-25 15:29:59,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:59,398 INFO L130 PetriNetUnfolder]: 42/90 cut-off events. [2022-11-25 15:29:59,398 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:29:59,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 90 events. 42/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 253 event pairs, 32 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 174. Up to 89 conditions per place. [2022-11-25 15:29:59,400 INFO L137 encePairwiseOnDemand]: 255/257 looper letters, 15 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2022-11-25 15:29:59,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 17 transitions, 69 flow [2022-11-25 15:29:59,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 15:29:59,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 15:29:59,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 254 transitions. [2022-11-25 15:29:59,420 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49416342412451364 [2022-11-25 15:29:59,421 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 254 transitions. [2022-11-25 15:29:59,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 254 transitions. [2022-11-25 15:29:59,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:59,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 254 transitions. [2022-11-25 15:29:59,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 127.0) internal successors, (254), 2 states have internal predecessors, (254), 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 15:29:59,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 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 15:29:59,449 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 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 15:29:59,451 INFO L175 Difference]: Start difference. First operand has 21 places, 19 transitions, 41 flow. Second operand 2 states and 254 transitions. [2022-11-25 15:29:59,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 17 transitions, 69 flow [2022-11-25 15:29:59,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 17 transitions, 68 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:29:59,472 INFO L231 Difference]: Finished difference. Result has 19 places, 16 transitions, 34 flow [2022-11-25 15:29:59,474 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=34, PETRI_PLACES=19, PETRI_TRANSITIONS=16} [2022-11-25 15:29:59,478 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, -2 predicate places. [2022-11-25 15:29:59,479 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 16 transitions, 34 flow [2022-11-25 15:29:59,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 118.5) internal successors, (237), 2 states have internal predecessors, (237), 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 15:29:59,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:59,480 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 15:29:59,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:59,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:29:59,681 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 15:29:59,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:59,682 INFO L85 PathProgramCache]: Analyzing trace with hash 14710962, now seen corresponding path program 1 times [2022-11-25 15:29:59,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:29:59,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736913419] [2022-11-25 15:29:59,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:59,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:29:59,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:29:59,690 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:29:59,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 15:29:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:59,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:29:59,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:59,858 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 15:29:59,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:29:59,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:29:59,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736913419] [2022-11-25 15:29:59,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736913419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:59,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:59,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:29:59,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981582538] [2022-11-25 15:29:59,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:59,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:29:59,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:29:59,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:29:59,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:29:59,877 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 257 [2022-11-25 15:29:59,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 16 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 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 15:29:59,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:59,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 257 [2022-11-25 15:29:59,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:30:00,039 INFO L130 PetriNetUnfolder]: 58/132 cut-off events. [2022-11-25 15:30:00,039 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:30:00,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 132 events. 58/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 455 event pairs, 18 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 261. Up to 65 conditions per place. [2022-11-25 15:30:00,041 INFO L137 encePairwiseOnDemand]: 253/257 looper letters, 23 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2022-11-25 15:30:00,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 27 transitions, 108 flow [2022-11-25 15:30:00,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:30:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:30:00,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2022-11-25 15:30:00,046 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48249027237354086 [2022-11-25 15:30:00,059 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2022-11-25 15:30:00,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2022-11-25 15:30:00,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:30:00,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2022-11-25 15:30:00,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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 15:30:00,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 15:30:00,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 15:30:00,068 INFO L175 Difference]: Start difference. First operand has 19 places, 16 transitions, 34 flow. Second operand 3 states and 372 transitions. [2022-11-25 15:30:00,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 27 transitions, 108 flow [2022-11-25 15:30:00,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 27 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 15:30:00,070 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 52 flow [2022-11-25 15:30:00,070 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2022-11-25 15:30:00,071 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2022-11-25 15:30:00,071 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 52 flow [2022-11-25 15:30:00,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 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 15:30:00,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:30:00,072 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 15:30:00,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:30:00,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:00,286 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 15:30:00,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:30:00,287 INFO L85 PathProgramCache]: Analyzing trace with hash 456004084, now seen corresponding path program 1 times [2022-11-25 15:30:00,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:30:00,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067891341] [2022-11-25 15:30:00,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:30:00,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:00,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:30:00,290 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:30:00,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-25 15:30:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:00,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 15:30:00,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:30:00,412 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 15:30:00,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:30:00,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:30:00,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067891341] [2022-11-25 15:30:00,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067891341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:30:00,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:30:00,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:30:00,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193459261] [2022-11-25 15:30:00,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:30:00,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:30:00,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:30:00,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:30:00,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:30:00,433 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 257 [2022-11-25 15:30:00,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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 15:30:00,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:30:00,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 257 [2022-11-25 15:30:00,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:30:00,586 INFO L130 PetriNetUnfolder]: 49/121 cut-off events. [2022-11-25 15:30:00,592 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-11-25 15:30:00,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 121 events. 49/121 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 407 event pairs, 22 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 271. Up to 92 conditions per place. [2022-11-25 15:30:00,595 INFO L137 encePairwiseOnDemand]: 253/257 looper letters, 21 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2022-11-25 15:30:00,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 25 transitions, 122 flow [2022-11-25 15:30:00,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:30:00,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:30:00,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2022-11-25 15:30:00,609 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4785992217898833 [2022-11-25 15:30:00,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2022-11-25 15:30:00,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2022-11-25 15:30:00,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:30:00,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2022-11-25 15:30:00,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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 15:30:00,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 15:30:00,622 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 15:30:00,623 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 52 flow. Second operand 3 states and 369 transitions. [2022-11-25 15:30:00,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 25 transitions, 122 flow [2022-11-25 15:30:00,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 25 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:30:00,625 INFO L231 Difference]: Finished difference. Result has 24 places, 18 transitions, 64 flow [2022-11-25 15:30:00,625 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2022-11-25 15:30:00,628 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 3 predicate places. [2022-11-25 15:30:00,628 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 18 transitions, 64 flow [2022-11-25 15:30:00,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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 15:30:00,629 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:30:00,629 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:30:00,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:30:00,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:00,842 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 15:30:00,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:30:00,843 INFO L85 PathProgramCache]: Analyzing trace with hash 133282018, now seen corresponding path program 1 times [2022-11-25 15:30:00,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:30:00,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293417186] [2022-11-25 15:30:00,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:30:00,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:00,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:30:00,846 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:30:00,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-25 15:30:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:00,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:30:00,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:30:01,022 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 15:30:01,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:30:01,023 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:30:01,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293417186] [2022-11-25 15:30:01,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293417186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:30:01,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:30:01,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:30:01,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543067130] [2022-11-25 15:30:01,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:30:01,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:30:01,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:30:01,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:30:01,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:30:01,128 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 257 [2022-11-25 15:30:01,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 18 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 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 15:30:01,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:30:01,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 257 [2022-11-25 15:30:01,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:30:01,190 INFO L130 PetriNetUnfolder]: 42/103 cut-off events. [2022-11-25 15:30:01,190 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-25 15:30:01,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 103 events. 42/103 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 330 event pairs, 25 based on Foata normal form. 11/109 useless extension candidates. Maximal degree in co-relation 259. Up to 101 conditions per place. [2022-11-25 15:30:01,192 INFO L137 encePairwiseOnDemand]: 255/257 looper letters, 10 selfloop transitions, 1 changer transitions 5/17 dead transitions. [2022-11-25 15:30:01,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 17 transitions, 94 flow [2022-11-25 15:30:01,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:30:01,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:30:01,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2022-11-25 15:30:01,195 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46303501945525294 [2022-11-25 15:30:01,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2022-11-25 15:30:01,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2022-11-25 15:30:01,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:30:01,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2022-11-25 15:30:01,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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 15:30:01,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 15:30:01,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 15:30:01,201 INFO L175 Difference]: Start difference. First operand has 24 places, 18 transitions, 64 flow. Second operand 3 states and 357 transitions. [2022-11-25 15:30:01,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 17 transitions, 94 flow [2022-11-25 15:30:01,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 17 transitions, 88 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:30:01,203 INFO L231 Difference]: Finished difference. Result has 23 places, 12 transitions, 44 flow [2022-11-25 15:30:01,204 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=12} [2022-11-25 15:30:01,204 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 2 predicate places. [2022-11-25 15:30:01,205 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 12 transitions, 44 flow [2022-11-25 15:30:01,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 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 15:30:01,206 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:30:01,206 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:30:01,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-25 15:30:01,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:01,415 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 15:30:01,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:30:01,416 INFO L85 PathProgramCache]: Analyzing trace with hash -163776595, now seen corresponding path program 1 times [2022-11-25 15:30:01,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:30:01,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136953452] [2022-11-25 15:30:01,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:30:01,417 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:01,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:30:01,417 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:30:01,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 15:30:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:01,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:30:01,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:30:01,527 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 15:30:01,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:30:01,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:30:01,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136953452] [2022-11-25 15:30:01,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136953452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:30:01,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:30:01,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:30:01,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566017777] [2022-11-25 15:30:01,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:30:01,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:30:01,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:30:01,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:30:01,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:30:01,551 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 257 [2022-11-25 15:30:01,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 12 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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 15:30:01,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:30:01,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 257 [2022-11-25 15:30:01,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:30:01,609 INFO L130 PetriNetUnfolder]: 13/45 cut-off events. [2022-11-25 15:30:01,610 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-25 15:30:01,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 45 events. 13/45 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 144 event pairs, 10 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 113. Up to 37 conditions per place. [2022-11-25 15:30:01,611 INFO L137 encePairwiseOnDemand]: 255/257 looper letters, 10 selfloop transitions, 0 changer transitions 4/15 dead transitions. [2022-11-25 15:30:01,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 15 transitions, 80 flow [2022-11-25 15:30:01,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:30:01,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:30:01,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2022-11-25 15:30:01,614 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46173800259403375 [2022-11-25 15:30:01,614 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2022-11-25 15:30:01,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2022-11-25 15:30:01,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:30:01,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2022-11-25 15:30:01,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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 15:30:01,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 15:30:01,624 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 15:30:01,624 INFO L175 Difference]: Start difference. First operand has 23 places, 12 transitions, 44 flow. Second operand 3 states and 356 transitions. [2022-11-25 15:30:01,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 15 transitions, 80 flow [2022-11-25 15:30:01,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 15 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:30:01,629 INFO L231 Difference]: Finished difference. Result has 21 places, 11 transitions, 39 flow [2022-11-25 15:30:01,629 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=21, PETRI_TRANSITIONS=11} [2022-11-25 15:30:01,633 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 0 predicate places. [2022-11-25 15:30:01,633 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 11 transitions, 39 flow [2022-11-25 15:30:01,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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 15:30:01,634 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:30:01,634 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:30:01,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-25 15:30:01,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:01,847 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 15:30:01,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:30:01,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1533719925, now seen corresponding path program 1 times [2022-11-25 15:30:01,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:30:01,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122382433] [2022-11-25 15:30:01,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:30:01,848 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:01,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:30:01,850 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:30:01,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-25 15:30:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:01,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 15:30:01,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:30:02,103 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 15:30:02,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:30:02,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:30:02,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122382433] [2022-11-25 15:30:02,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122382433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:30:02,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:30:02,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:30:02,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74786289] [2022-11-25 15:30:02,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:30:02,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:30:02,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:30:02,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:30:02,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:30:02,211 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 257 [2022-11-25 15:30:02,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 11 transitions, 39 flow. Second operand has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 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 15:30:02,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:30:02,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 257 [2022-11-25 15:30:02,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:30:02,387 INFO L130 PetriNetUnfolder]: 17/60 cut-off events. [2022-11-25 15:30:02,388 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 15:30:02,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 60 events. 17/60 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 190 event pairs, 2 based on Foata normal form. 2/62 useless extension candidates. Maximal degree in co-relation 144. Up to 39 conditions per place. [2022-11-25 15:30:02,388 INFO L137 encePairwiseOnDemand]: 251/257 looper letters, 11 selfloop transitions, 7 changer transitions 4/22 dead transitions. [2022-11-25 15:30:02,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 22 transitions, 111 flow [2022-11-25 15:30:02,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 15:30:02,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 15:30:02,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 878 transitions. [2022-11-25 15:30:02,393 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4270428015564202 [2022-11-25 15:30:02,393 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 878 transitions. [2022-11-25 15:30:02,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 878 transitions. [2022-11-25 15:30:02,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:30:02,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 878 transitions. [2022-11-25 15:30:02,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 109.75) internal successors, (878), 8 states have internal predecessors, (878), 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 15:30:02,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 257.0) internal successors, (2313), 9 states have internal predecessors, (2313), 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 15:30:02,402 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 257.0) internal successors, (2313), 9 states have internal predecessors, (2313), 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 15:30:02,402 INFO L175 Difference]: Start difference. First operand has 21 places, 11 transitions, 39 flow. Second operand 8 states and 878 transitions. [2022-11-25 15:30:02,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 22 transitions, 111 flow [2022-11-25 15:30:02,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 109 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 15:30:02,404 INFO L231 Difference]: Finished difference. Result has 30 places, 16 transitions, 79 flow [2022-11-25 15:30:02,405 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=79, PETRI_PLACES=30, PETRI_TRANSITIONS=16} [2022-11-25 15:30:02,405 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 9 predicate places. [2022-11-25 15:30:02,405 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 16 transitions, 79 flow [2022-11-25 15:30:02,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 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 15:30:02,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:30:02,406 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:30:02,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-25 15:30:02,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:02,620 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 15:30:02,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:30:02,620 INFO L85 PathProgramCache]: Analyzing trace with hash -859880433, now seen corresponding path program 2 times [2022-11-25 15:30:02,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:30:02,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890009565] [2022-11-25 15:30:02,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:30:02,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:02,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:30:02,622 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:30:02,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-25 15:30:02,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 15:30:02,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-25 15:30:02,693 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:30:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:30:02,753 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-25 15:30:02,753 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 15:30:02,754 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2022-11-25 15:30:02,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2022-11-25 15:30:02,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2022-11-25 15:30:02,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2022-11-25 15:30:02,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-11-25 15:30:02,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-25 15:30:02,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:30:02,959 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-11-25 15:30:02,963 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 15:30:02,964 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 15:30:02,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 03:30:02 BasicIcfg [2022-11-25 15:30:02,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 15:30:02,992 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 15:30:02,992 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 15:30:02,992 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 15:30:02,994 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:29:51" (3/4) ... [2022-11-25 15:30:02,997 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 15:30:02,997 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 15:30:02,997 INFO L158 Benchmark]: Toolchain (without parser) took 12831.13ms. Allocated memory was 75.5MB in the beginning and 125.8MB in the end (delta: 50.3MB). Free memory was 52.4MB in the beginning and 73.2MB in the end (delta: -20.8MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2022-11-25 15:30:02,998 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 75.5MB. Free memory is still 52.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:30:02,998 INFO L158 Benchmark]: CACSL2BoogieTranslator took 821.24ms. Allocated memory was 75.5MB in the beginning and 104.9MB in the end (delta: 29.4MB). Free memory was 52.2MB in the beginning and 77.1MB in the end (delta: -24.9MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2022-11-25 15:30:02,999 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.96ms. Allocated memory is still 104.9MB. Free memory was 77.1MB in the beginning and 75.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:30:02,999 INFO L158 Benchmark]: Boogie Preprocessor took 67.51ms. Allocated memory is still 104.9MB. Free memory was 75.0MB in the beginning and 72.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:30:03,000 INFO L158 Benchmark]: RCFGBuilder took 703.37ms. Allocated memory is still 104.9MB. Free memory was 72.9MB in the beginning and 55.7MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 15:30:03,000 INFO L158 Benchmark]: TraceAbstraction took 11135.44ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 55.2MB in the beginning and 73.2MB in the end (delta: -18.0MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2022-11-25 15:30:03,001 INFO L158 Benchmark]: Witness Printer took 5.01ms. Allocated memory is still 125.8MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:30:03,003 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 75.5MB. Free memory is still 52.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 821.24ms. Allocated memory was 75.5MB in the beginning and 104.9MB in the end (delta: 29.4MB). Free memory was 52.2MB in the beginning and 77.1MB in the end (delta: -24.9MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.96ms. Allocated memory is still 104.9MB. Free memory was 77.1MB in the beginning and 75.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.51ms. Allocated memory is still 104.9MB. Free memory was 75.0MB in the beginning and 72.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 703.37ms. Allocated memory is still 104.9MB. Free memory was 72.9MB in the beginning and 55.7MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 11135.44ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 55.2MB in the beginning and 73.2MB in the end (delta: -18.0MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * Witness Printer took 5.01ms. Allocated memory is still 125.8MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.9s, 121 PlacesBefore, 21 PlacesAfterwards, 123 TransitionsBefore, 19 TransitionsAfterwards, 3840 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 81 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 19 ConcurrentYvCompositions, 4 ChoiceCompositions, 133 TotalNumberOfCompositions, 3885 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3338, independent: 3258, independent conditional: 0, independent unconditional: 3258, dependent: 80, dependent conditional: 0, dependent unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2764, independent: 2729, independent conditional: 0, independent unconditional: 2729, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2764, independent: 2726, independent conditional: 0, independent unconditional: 2726, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 38, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 200, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 180, dependent conditional: 0, dependent unconditional: 180, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3338, independent: 529, independent conditional: 0, independent unconditional: 529, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 2764, unknown conditional: 0, unknown unconditional: 2764] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 690]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 690. Possible FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L756] 0 pthread_t t; [L757] 0 pendingIo = 1 [L758] 0 stoppingFlag = 0 [L759] 0 stoppingEvent = 0 [L760] 0 stopped = 0 [L761] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, pthread_create(&t, 0, BCSP_PnpStop, 0)=-1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L762] CALL 0 BCSP_PnpAdd(0) [L734] 0 int status; [L735] CALL, EXPR 0 BCSP_IoIncrement() [L703] 0 int lsf = stoppingFlag; [L705] COND FALSE 0 !(\read(lsf)) VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L745] 1 stoppingFlag = 1 [L747] CALL 1 BCSP_IoDecrement() [L725] 1 int pending; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L709] 0 int lp = pendingIo; VAL [lp=1, lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L726] CALL, EXPR 1 dec() [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; [L722] 1 return tmp; [L726] RET, EXPR 1 dec() [L726] 1 pending = dec() [L727] COND TRUE 1 pending == 0 [L729] 1 stoppingEvent = 1 [L747] RET 1 BCSP_IoDecrement() [L749] 1 int lse = stoppingEvent; [L751] CALL 1 assume_abort_if_not(lse) [L686] COND FALSE 1 !(!cond) [L751] RET 1 assume_abort_if_not(lse) [L752] 1 stopped = 1 [L753] 1 return 0; [L712] 0 pendingIo = lp + 1 [L715] 0 return 0; [L735] RET, EXPR 0 BCSP_IoIncrement() [L735] 0 status = BCSP_IoIncrement() VAL [arg={0:0}, arg={0:0}, BCSP_IoIncrement()=0, pendingIo=2, status=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L736] COND TRUE 0 status == 0 [L737] 0 int local_assertion = !stopped; [L738] CALL 0 __VERIFIER_assert(local_assertion) [L689] COND TRUE 0 !(cond) [L690] 0 reach_error() VAL [\old(cond)=0, cond=0, pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 755]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 761]: 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, 149 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: 10.9s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 124 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 68 mSDsluCounter, 69 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 309 IncrementalHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 19 mSDtfsCounter, 309 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=6, InterpolantAutomatonStates: 22, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 29 ConstructedInterpolants, 6 QuantifiedInterpolants, 173 SizeOfPredicates, 14 NumberOfNonLiveVariables, 285 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 could not prove your program: unable to determine feasibility of some traces [2022-11-25 15:30:03,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb16a2a4-e6c7-4acf-becc-e49683932a9f/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 Result: UNKNOWN: Overapproximated counterexample