./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled-atomic.wvr.c --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_7ffd0fe4-6591-4bad-8477-04132aad3384/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd0fe4-6591-4bad-8477-04132aad3384/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_7ffd0fe4-6591-4bad-8477-04132aad3384/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd0fe4-6591-4bad-8477-04132aad3384/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled-atomic.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd0fe4-6591-4bad-8477-04132aad3384/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_7ffd0fe4-6591-4bad-8477-04132aad3384/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 fafa05b72e6925548935fa790281a49d4bca5cad8ef15917dd3e0ea4e3ccb38f --- 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 18:04:15,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:04:15,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:04:15,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:04:15,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:04:15,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:04:15,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:04:15,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:04:15,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:04:15,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:04:15,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:04:15,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:04:15,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:04:15,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:04:15,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:04:15,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:04:15,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:04:15,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:04:15,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:04:15,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:04:15,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:04:15,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:04:15,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:04:15,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:04:15,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:04:15,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:04:15,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:04:15,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:04:15,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:04:15,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:04:15,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:04:15,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:04:15,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:04:15,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:04:15,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:04:15,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:04:15,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:04:15,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:04:15,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:04:15,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:04:15,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:04:15,381 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd0fe4-6591-4bad-8477-04132aad3384/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 18:04:15,403 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:04:15,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:04:15,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:04:15,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:04:15,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:04:15,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:04:15,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:04:15,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:04:15,406 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:04:15,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:04:15,406 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:04:15,407 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:04:15,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:04:15,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:04:15,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:04:15,407 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:04:15,408 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:04:15,408 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:04:15,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:04:15,408 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:04:15,408 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:04:15,408 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:04:15,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:04:15,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:04:15,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:04:15,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:04:15,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:04:15,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:04:15,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:04:15,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:04:15,410 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:04:15,410 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:04:15,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:04:15,411 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_7ffd0fe4-6591-4bad-8477-04132aad3384/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd0fe4-6591-4bad-8477-04132aad3384/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fafa05b72e6925548935fa790281a49d4bca5cad8ef15917dd3e0ea4e3ccb38f [2022-11-25 18:04:15,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:04:15,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:04:15,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:04:15,773 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:04:15,775 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:04:15,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd0fe4-6591-4bad-8477-04132aad3384/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled-atomic.wvr.c [2022-11-25 18:04:18,824 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:04:19,090 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:04:19,091 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd0fe4-6591-4bad-8477-04132aad3384/sv-benchmarks/c/weaver/parallel-misc-2-unrolled-atomic.wvr.c [2022-11-25 18:04:19,100 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd0fe4-6591-4bad-8477-04132aad3384/bin/uautomizer-ZsLfNo2U6R/data/480877db5/de05aae8ed2e47e5a0ef98b89e33ee8f/FLAG6eaa24fb3 [2022-11-25 18:04:19,123 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd0fe4-6591-4bad-8477-04132aad3384/bin/uautomizer-ZsLfNo2U6R/data/480877db5/de05aae8ed2e47e5a0ef98b89e33ee8f [2022-11-25 18:04:19,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:04:19,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:04:19,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:04:19,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:04:19,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:04:19,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:04:19" (1/1) ... [2022-11-25 18:04:19,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20320d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:19, skipping insertion in model container [2022-11-25 18:04:19,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:04:19" (1/1) ... [2022-11-25 18:04:19,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:04:19,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:04:19,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:04:19,468 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:04:19,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:04:19,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:04:19,494 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_7ffd0fe4-6591-4bad-8477-04132aad3384/sv-benchmarks/c/weaver/parallel-misc-2-unrolled-atomic.wvr.c[2252,2265] [2022-11-25 18:04:19,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:04:19,514 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:04:19,538 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:04:19,539 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:04:19,540 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:04:19,540 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:04:19,546 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_7ffd0fe4-6591-4bad-8477-04132aad3384/sv-benchmarks/c/weaver/parallel-misc-2-unrolled-atomic.wvr.c[2252,2265] [2022-11-25 18:04:19,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:04:19,560 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:04:19,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:19 WrapperNode [2022-11-25 18:04:19,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:04:19,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:04:19,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:04:19,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:04:19,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:19" (1/1) ... [2022-11-25 18:04:19,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:19" (1/1) ... [2022-11-25 18:04:19,613 INFO L138 Inliner]: procedures = 20, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 68 [2022-11-25 18:04:19,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:04:19,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:04:19,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:04:19,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:04:19,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:19" (1/1) ... [2022-11-25 18:04:19,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:19" (1/1) ... [2022-11-25 18:04:19,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:19" (1/1) ... [2022-11-25 18:04:19,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:19" (1/1) ... [2022-11-25 18:04:19,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:19" (1/1) ... [2022-11-25 18:04:19,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:19" (1/1) ... [2022-11-25 18:04:19,643 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:19" (1/1) ... [2022-11-25 18:04:19,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:19" (1/1) ... [2022-11-25 18:04:19,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:04:19,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:04:19,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:04:19,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:04:19,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:19" (1/1) ... [2022-11-25 18:04:19,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:04:19,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd0fe4-6591-4bad-8477-04132aad3384/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:19,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd0fe4-6591-4bad-8477-04132aad3384/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:04:19,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd0fe4-6591-4bad-8477-04132aad3384/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:04:19,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:04:19,730 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 18:04:19,730 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 18:04:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 18:04:19,731 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 18:04:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:04:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:04:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:04:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 18:04:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 18:04:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:04:19,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:04:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:04:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:04:19,733 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 18:04:19,830 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:04:19,832 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:04:20,088 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:04:20,211 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:04:20,221 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 18:04:20,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:04:20 BoogieIcfgContainer [2022-11-25 18:04:20,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:04:20,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:04:20,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:04:20,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:04:20,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:04:19" (1/3) ... [2022-11-25 18:04:20,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7f22f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:04:20, skipping insertion in model container [2022-11-25 18:04:20,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:19" (2/3) ... [2022-11-25 18:04:20,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7f22f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:04:20, skipping insertion in model container [2022-11-25 18:04:20,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:04:20" (3/3) ... [2022-11-25 18:04:20,233 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled-atomic.wvr.c [2022-11-25 18:04:20,250 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:04:20,250 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-25 18:04:20,250 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:04:20,347 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 18:04:20,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 108 transitions, 232 flow [2022-11-25 18:04:20,507 INFO L130 PetriNetUnfolder]: 7/106 cut-off events. [2022-11-25 18:04:20,507 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:04:20,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 106 events. 7/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-25 18:04:20,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 108 transitions, 232 flow [2022-11-25 18:04:20,517 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 101 transitions, 214 flow [2022-11-25 18:04:20,521 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:04:20,537 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 101 transitions, 214 flow [2022-11-25 18:04:20,540 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 101 transitions, 214 flow [2022-11-25 18:04:20,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 101 transitions, 214 flow [2022-11-25 18:04:20,591 INFO L130 PetriNetUnfolder]: 7/101 cut-off events. [2022-11-25 18:04:20,591 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:04:20,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 101 events. 7/101 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-25 18:04:20,593 INFO L119 LiptonReduction]: Number of co-enabled transitions 348 [2022-11-25 18:04:25,262 INFO L134 LiptonReduction]: Checked pairs total: 518 [2022-11-25 18:04:25,262 INFO L136 LiptonReduction]: Total number of compositions: 112 [2022-11-25 18:04:25,292 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:04:25,301 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;@535ba3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:04:25,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-25 18:04:25,305 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 18:04:25,306 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:04:25,306 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:04:25,307 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 18:04:25,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 18:04:25,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:25,319 INFO L85 PathProgramCache]: Analyzing trace with hash 437, now seen corresponding path program 1 times [2022-11-25 18:04:25,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:25,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883861006] [2022-11-25 18:04:25,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:25,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:25,448 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 18:04:25,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:25,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883861006] [2022-11-25 18:04:25,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883861006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:25,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:04:25,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 18:04:25,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128149821] [2022-11-25 18:04:25,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:25,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:04:25,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:25,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:04:25,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:04:25,494 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 220 [2022-11-25 18:04:25,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 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 18:04:25,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:04:25,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 220 [2022-11-25 18:04:25,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:04:25,574 INFO L130 PetriNetUnfolder]: 45/80 cut-off events. [2022-11-25 18:04:25,575 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-25 18:04:25,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 80 events. 45/80 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 153 event pairs, 21 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 124. Up to 81 conditions per place. [2022-11-25 18:04:25,579 INFO L137 encePairwiseOnDemand]: 217/220 looper letters, 19 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2022-11-25 18:04:25,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 88 flow [2022-11-25 18:04:25,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:04:25,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 18:04:25,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 214 transitions. [2022-11-25 18:04:25,597 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4863636363636364 [2022-11-25 18:04:25,598 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 214 transitions. [2022-11-25 18:04:25,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 214 transitions. [2022-11-25 18:04:25,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:04:25,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 214 transitions. [2022-11-25 18:04:25,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 107.0) internal successors, (214), 2 states have internal predecessors, (214), 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 18:04:25,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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 18:04:25,618 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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 18:04:25,621 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 56 flow. Second operand 2 states and 214 transitions. [2022-11-25 18:04:25,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 88 flow [2022-11-25 18:04:25,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 18:04:25,626 INFO L231 Difference]: Finished difference. Result has 21 places, 19 transitions, 42 flow [2022-11-25 18:04:25,628 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=21, PETRI_TRANSITIONS=19} [2022-11-25 18:04:25,633 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2022-11-25 18:04:25,633 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 19 transitions, 42 flow [2022-11-25 18:04:25,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 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 18:04:25,635 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:04:25,638 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:04:25,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:04:25,639 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 18:04:25,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:25,641 INFO L85 PathProgramCache]: Analyzing trace with hash 428457, now seen corresponding path program 1 times [2022-11-25 18:04:25,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:25,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616163920] [2022-11-25 18:04:25,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:25,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:25,845 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 18:04:25,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:25,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616163920] [2022-11-25 18:04:25,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616163920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:25,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:04:25,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:04:25,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140541792] [2022-11-25 18:04:25,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:25,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:04:25,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:25,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:04:25,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:04:25,906 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 220 [2022-11-25 18:04:25,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 19 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 18:04:25,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:04:25,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 220 [2022-11-25 18:04:25,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:04:25,954 INFO L130 PetriNetUnfolder]: 41/72 cut-off events. [2022-11-25 18:04:25,955 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:04:25,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 72 events. 41/72 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 127 event pairs, 19 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 147. Up to 72 conditions per place. [2022-11-25 18:04:25,956 INFO L137 encePairwiseOnDemand]: 217/220 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2022-11-25 18:04:25,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 17 transitions, 72 flow [2022-11-25 18:04:25,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:04:25,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:04:25,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2022-11-25 18:04:25,959 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2022-11-25 18:04:25,959 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2022-11-25 18:04:25,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2022-11-25 18:04:25,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:04:25,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2022-11-25 18:04:25,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 18:04:25,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 18:04:25,964 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 18:04:25,964 INFO L175 Difference]: Start difference. First operand has 21 places, 19 transitions, 42 flow. Second operand 3 states and 280 transitions. [2022-11-25 18:04:25,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 17 transitions, 72 flow [2022-11-25 18:04:25,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:04:25,965 INFO L231 Difference]: Finished difference. Result has 21 places, 17 transitions, 40 flow [2022-11-25 18:04:25,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, 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=40, PETRI_PLACES=21, PETRI_TRANSITIONS=17} [2022-11-25 18:04:25,966 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2022-11-25 18:04:25,967 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 40 flow [2022-11-25 18:04:25,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 18:04:25,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:04:25,968 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:04:25,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:04:25,968 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 18:04:25,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:25,969 INFO L85 PathProgramCache]: Analyzing trace with hash 428455, now seen corresponding path program 1 times [2022-11-25 18:04:25,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:25,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804808096] [2022-11-25 18:04:25,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:25,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:26,171 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 18:04:26,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:26,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804808096] [2022-11-25 18:04:26,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804808096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:26,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:04:26,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:04:26,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964791146] [2022-11-25 18:04:26,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:26,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:04:26,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:26,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:04:26,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:04:26,215 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 220 [2022-11-25 18:04:26,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 18:04:26,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:04:26,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 220 [2022-11-25 18:04:26,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:04:26,268 INFO L130 PetriNetUnfolder]: 37/64 cut-off events. [2022-11-25 18:04:26,268 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:04:26,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 64 events. 37/64 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 107 event pairs, 17 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 132. Up to 64 conditions per place. [2022-11-25 18:04:26,270 INFO L137 encePairwiseOnDemand]: 217/220 looper letters, 14 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2022-11-25 18:04:26,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 66 flow [2022-11-25 18:04:26,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:04:26,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:04:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2022-11-25 18:04:26,275 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2022-11-25 18:04:26,276 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2022-11-25 18:04:26,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2022-11-25 18:04:26,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:04:26,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2022-11-25 18:04:26,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 18:04:26,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 18:04:26,281 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 18:04:26,281 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 40 flow. Second operand 3 states and 290 transitions. [2022-11-25 18:04:26,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 66 flow [2022-11-25 18:04:26,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 15 transitions, 65 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:04:26,282 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 37 flow [2022-11-25 18:04:26,282 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2022-11-25 18:04:26,284 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2022-11-25 18:04:26,284 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 37 flow [2022-11-25 18:04:26,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 18:04:26,285 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:04:26,285 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:04:26,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:04:26,286 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 18:04:26,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:26,288 INFO L85 PathProgramCache]: Analyzing trace with hash 411755580, now seen corresponding path program 1 times [2022-11-25 18:04:26,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:26,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456865036] [2022-11-25 18:04:26,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:26,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:26,372 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 18:04:26,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:26,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456865036] [2022-11-25 18:04:26,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456865036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:26,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:04:26,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:04:26,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411711764] [2022-11-25 18:04:26,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:26,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:04:26,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:26,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:04:26,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:04:26,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 220 [2022-11-25 18:04:26,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:04:26,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:04:26,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 220 [2022-11-25 18:04:26,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:04:26,450 INFO L130 PetriNetUnfolder]: 29/52 cut-off events. [2022-11-25 18:04:26,451 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:04:26,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 52 events. 29/52 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 13 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 109. Up to 52 conditions per place. [2022-11-25 18:04:26,452 INFO L137 encePairwiseOnDemand]: 218/220 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2022-11-25 18:04:26,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 63 flow [2022-11-25 18:04:26,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:04:26,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:04:26,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2022-11-25 18:04:26,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2022-11-25 18:04:26,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2022-11-25 18:04:26,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2022-11-25 18:04:26,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:04:26,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2022-11-25 18:04:26,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:04:26,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 18:04:26,459 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 18:04:26,459 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 37 flow. Second operand 3 states and 279 transitions. [2022-11-25 18:04:26,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 63 flow [2022-11-25 18:04:26,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 62 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:04:26,460 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2022-11-25 18:04:26,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2022-11-25 18:04:26,461 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2022-11-25 18:04:26,462 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2022-11-25 18:04:26,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:04:26,462 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:04:26,463 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:04:26,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:04:26,463 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 18:04:26,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:26,464 INFO L85 PathProgramCache]: Analyzing trace with hash 411755581, now seen corresponding path program 1 times [2022-11-25 18:04:26,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:26,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893449944] [2022-11-25 18:04:26,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:26,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:26,602 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 18:04:26,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:26,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893449944] [2022-11-25 18:04:26,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893449944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:26,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:04:26,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:04:26,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613027188] [2022-11-25 18:04:26,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:26,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:04:26,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:26,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:04:26,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:04:26,671 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 220 [2022-11-25 18:04:26,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 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 18:04:26,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:04:26,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 220 [2022-11-25 18:04:26,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:04:26,704 INFO L130 PetriNetUnfolder]: 21/40 cut-off events. [2022-11-25 18:04:26,705 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:04:26,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 40 events. 21/40 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 9 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 86. Up to 40 conditions per place. [2022-11-25 18:04:26,706 INFO L137 encePairwiseOnDemand]: 218/220 looper letters, 12 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2022-11-25 18:04:26,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 60 flow [2022-11-25 18:04:26,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:04:26,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:04:26,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2022-11-25 18:04:26,708 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3984848484848485 [2022-11-25 18:04:26,708 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2022-11-25 18:04:26,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2022-11-25 18:04:26,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:04:26,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2022-11-25 18:04:26,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 18:04:26,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 18:04:26,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 18:04:26,712 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 3 states and 263 transitions. [2022-11-25 18:04:26,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 60 flow [2022-11-25 18:04:26,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 13 transitions, 59 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:04:26,713 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 35 flow [2022-11-25 18:04:26,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=35, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2022-11-25 18:04:26,716 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2022-11-25 18:04:26,716 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 35 flow [2022-11-25 18:04:26,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 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 18:04:26,717 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:04:26,717 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:04:26,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:04:26,718 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 18:04:26,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:26,719 INFO L85 PathProgramCache]: Analyzing trace with hash 878704468, now seen corresponding path program 1 times [2022-11-25 18:04:26,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:26,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168033318] [2022-11-25 18:04:26,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:26,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:26,865 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 18:04:26,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:26,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168033318] [2022-11-25 18:04:26,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168033318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:26,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:04:26,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:04:26,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605181826] [2022-11-25 18:04:26,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:26,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:04:26,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:26,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:04:26,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:04:26,881 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 220 [2022-11-25 18:04:26,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 35 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 18:04:26,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:04:26,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 220 [2022-11-25 18:04:26,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:04:26,914 INFO L130 PetriNetUnfolder]: 21/39 cut-off events. [2022-11-25 18:04:26,914 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:04:26,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 39 events. 21/39 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 9 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 85. Up to 39 conditions per place. [2022-11-25 18:04:26,914 INFO L137 encePairwiseOnDemand]: 218/220 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2022-11-25 18:04:26,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 12 transitions, 57 flow [2022-11-25 18:04:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:04:26,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:04:26,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2022-11-25 18:04:26,917 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2022-11-25 18:04:26,917 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2022-11-25 18:04:26,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2022-11-25 18:04:26,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:04:26,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2022-11-25 18:04:26,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 18:04:26,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 18:04:26,921 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 18:04:26,921 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 35 flow. Second operand 3 states and 295 transitions. [2022-11-25 18:04:26,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 12 transitions, 57 flow [2022-11-25 18:04:26,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 12 transitions, 56 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:04:26,922 INFO L231 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2022-11-25 18:04:26,922 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=32, 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=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2022-11-25 18:04:26,924 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2022-11-25 18:04:26,925 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2022-11-25 18:04:26,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 18:04:26,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2022-11-25 18:04:26,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-11-25 18:04:26,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-11-25 18:04:26,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-11-25 18:04:26,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-11-25 18:04:26,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-11-25 18:04:26,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-11-25 18:04:26,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-11-25 18:04:26,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2022-11-25 18:04:26,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-11-25 18:04:26,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-11-25 18:04:26,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-11-25 18:04:26,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:04:26,931 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-25 18:04:26,934 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 18:04:26,935 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:04:26,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:04:26 BasicIcfg [2022-11-25 18:04:26,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:04:26,939 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:04:26,939 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:04:26,939 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:04:26,940 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:04:20" (3/4) ... [2022-11-25 18:04:26,942 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 18:04:26,948 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-25 18:04:26,949 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-25 18:04:26,953 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-25 18:04:26,953 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 18:04:26,953 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 18:04:26,953 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 18:04:26,999 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd0fe4-6591-4bad-8477-04132aad3384/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 18:04:27,003 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:04:27,003 INFO L158 Benchmark]: Toolchain (without parser) took 7871.03ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 130.5MB in the beginning and 137.0MB in the end (delta: -6.4MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. [2022-11-25 18:04:27,004 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory is still 96.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:04:27,004 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.89ms. Allocated memory is still 165.7MB. Free memory was 130.5MB in the beginning and 131.1MB in the end (delta: -516.9kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-25 18:04:27,005 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.23ms. Allocated memory is still 165.7MB. Free memory was 131.1MB in the beginning and 129.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:04:27,005 INFO L158 Benchmark]: Boogie Preprocessor took 44.13ms. Allocated memory is still 165.7MB. Free memory was 129.5MB in the beginning and 128.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:04:27,005 INFO L158 Benchmark]: RCFGBuilder took 564.72ms. Allocated memory is still 165.7MB. Free memory was 128.2MB in the beginning and 110.5MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 18:04:27,006 INFO L158 Benchmark]: TraceAbstraction took 6712.01ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 109.3MB in the beginning and 140.1MB in the end (delta: -30.8MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2022-11-25 18:04:27,006 INFO L158 Benchmark]: Witness Printer took 64.01ms. Allocated memory is still 199.2MB. Free memory was 140.1MB in the beginning and 137.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:04:27,008 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory is still 96.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 424.89ms. Allocated memory is still 165.7MB. Free memory was 130.5MB in the beginning and 131.1MB in the end (delta: -516.9kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.23ms. Allocated memory is still 165.7MB. Free memory was 131.1MB in the beginning and 129.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.13ms. Allocated memory is still 165.7MB. Free memory was 129.5MB in the beginning and 128.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 564.72ms. Allocated memory is still 165.7MB. Free memory was 128.2MB in the beginning and 110.5MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6712.01ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 109.3MB in the beginning and 140.1MB in the end (delta: -30.8MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. * Witness Printer took 64.01ms. Allocated memory is still 199.2MB. Free memory was 140.1MB in the beginning and 137.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.7s, 101 PlacesBefore, 27 PlacesAfterwards, 101 TransitionsBefore, 22 TransitionsAfterwards, 348 CoEnabledTransitionPairs, 9 FixpointIterations, 77 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 4 ConcurrentYvCompositions, 5 ChoiceCompositions, 112 TotalNumberOfCompositions, 518 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 518, independent: 518, independent conditional: 0, independent unconditional: 518, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 226, independent: 226, independent conditional: 0, independent unconditional: 226, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 226, independent: 226, independent conditional: 0, independent unconditional: 226, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 518, independent: 292, independent conditional: 0, independent unconditional: 292, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 226, unknown conditional: 0, unknown unconditional: 226] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 84]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 65]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 114 locations, 12 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: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 252 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 138 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 228 IncrementalHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 6 mSDtfsCounter, 228 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 148 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 - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 18:04:27,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd0fe4-6591-4bad-8477-04132aad3384/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE