./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --- 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-2329fc7 [2022-12-14 14:32:55,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:32:55,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:32:55,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:32:55,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:32:55,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:32:55,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:32:55,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:32:55,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:32:55,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:32:55,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:32:55,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:32:55,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:32:55,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:32:55,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:32:55,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:32:55,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:32:55,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:32:55,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:32:55,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:32:55,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:32:55,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:32:55,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:32:55,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:32:55,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:32:55,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:32:55,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:32:55,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:32:55,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:32:55,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:32:55,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:32:55,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:32:55,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:32:55,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:32:55,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:32:55,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:32:55,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:32:55,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:32:55,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:32:55,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:32:55,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:32:55,536 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 14:32:55,551 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:32:55,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:32:55,552 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:32:55,552 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:32:55,553 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:32:55,553 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:32:55,553 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:32:55,553 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:32:55,553 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:32:55,553 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:32:55,553 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:32:55,553 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:32:55,554 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:32:55,554 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:32:55,554 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:32:55,554 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:32:55,554 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:32:55,554 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:32:55,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 14:32:55,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 14:32:55,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:32:55,555 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:32:55,555 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:32:55,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:32:55,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:32:55,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:32:55,556 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 14:32:55,556 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 14:32:55,556 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 14:32:55,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:32:55,556 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 14:32:55,556 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:32:55,556 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:32:55,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:32:55,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:32:55,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:32:55,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:32:55,557 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:32:55,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:32:55,557 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:32:55,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:32:55,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:32:55,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2022-12-14 14:32:55,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:32:55,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:32:55,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:32:55,765 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:32:55,766 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:32:55,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2022-12-14 14:32:58,299 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:32:58,512 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:32:58,512 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2022-12-14 14:32:58,525 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/data/913930e02/5dc96ac700b6480291b3f970a5cd051c/FLAGb12681542 [2022-12-14 14:32:58,877 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/data/913930e02/5dc96ac700b6480291b3f970a5cd051c [2022-12-14 14:32:58,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:32:58,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:32:58,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:32:58,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:32:58,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:32:58,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:32:58" (1/1) ... [2022-12-14 14:32:58,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@530ffe1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:32:58, skipping insertion in model container [2022-12-14 14:32:58,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:32:58" (1/1) ... [2022-12-14 14:32:58,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:32:58,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:32:59,203 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_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2022-12-14 14:32:59,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:32:59,216 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:32:59,246 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_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2022-12-14 14:32:59,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:32:59,309 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:32:59,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:32:59 WrapperNode [2022-12-14 14:32:59,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:32:59,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:32:59,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:32:59,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:32:59,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:32:59" (1/1) ... [2022-12-14 14:32:59,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:32:59" (1/1) ... [2022-12-14 14:32:59,341 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-12-14 14:32:59,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:32:59,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:32:59,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:32:59,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:32:59,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:32:59" (1/1) ... [2022-12-14 14:32:59,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:32:59" (1/1) ... [2022-12-14 14:32:59,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:32:59" (1/1) ... [2022-12-14 14:32:59,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:32:59" (1/1) ... [2022-12-14 14:32:59,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:32:59" (1/1) ... [2022-12-14 14:32:59,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:32:59" (1/1) ... [2022-12-14 14:32:59,360 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:32:59" (1/1) ... [2022-12-14 14:32:59,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:32:59" (1/1) ... [2022-12-14 14:32:59,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:32:59,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:32:59,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:32:59,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:32:59,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:32:59" (1/1) ... [2022-12-14 14:32:59,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:32:59,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:32:59,387 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:32:59,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:32:59,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:32:59,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:32:59,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 14:32:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 14:32:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-14 14:32:59,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-14 14:32:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-14 14:32:59,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-14 14:32:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 14:32:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 14:32:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:32:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:32:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:32:59,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:32:59,424 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 14:32:59,531 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:32:59,533 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:32:59,748 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:32:59,756 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:32:59,756 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 14:32:59,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:32:59 BoogieIcfgContainer [2022-12-14 14:32:59,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:32:59,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:32:59,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:32:59,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:32:59,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:32:58" (1/3) ... [2022-12-14 14:32:59,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740cca4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:32:59, skipping insertion in model container [2022-12-14 14:32:59,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:32:59" (2/3) ... [2022-12-14 14:32:59,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740cca4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:32:59, skipping insertion in model container [2022-12-14 14:32:59,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:32:59" (3/3) ... [2022-12-14 14:32:59,767 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2022-12-14 14:32:59,783 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:32:59,783 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-14 14:32:59,783 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 14:32:59,842 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 14:32:59,875 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 14:32:59,888 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 147 transitions, 310 flow [2022-12-14 14:32:59,891 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 147 transitions, 310 flow [2022-12-14 14:32:59,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 147 transitions, 310 flow [2022-12-14 14:32:59,943 INFO L130 PetriNetUnfolder]: 10/145 cut-off events. [2022-12-14 14:32:59,943 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-14 14:32:59,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 145 events. 10/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 184 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 90. Up to 3 conditions per place. [2022-12-14 14:32:59,951 INFO L119 LiptonReduction]: Number of co-enabled transitions 2314 [2022-12-14 14:33:05,745 INFO L134 LiptonReduction]: Checked pairs total: 5314 [2022-12-14 14:33:05,745 INFO L136 LiptonReduction]: Total number of compositions: 142 [2022-12-14 14:33:05,750 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 42 transitions, 100 flow [2022-12-14 14:33:05,777 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 403 states, 393 states have (on average 2.9567430025445294) internal successors, (1162), 402 states have internal predecessors, (1162), 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) [2022-12-14 14:33:05,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:33:05,793 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=FINITE_AUTOMATA, 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;@684fe6ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:33:05,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-14 14:33:05,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 403 states, 393 states have (on average 2.9567430025445294) internal successors, (1162), 402 states have internal predecessors, (1162), 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) [2022-12-14 14:33:05,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-12-14 14:33:05,799 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:33:05,799 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-12-14 14:33:05,799 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)] === [2022-12-14 14:33:05,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:33:05,803 INFO L85 PathProgramCache]: Analyzing trace with hash 562, now seen corresponding path program 1 times [2022-12-14 14:33:05,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:33:05,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914742904] [2022-12-14 14:33:05,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:33:05,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:33:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:33:05,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:33:05,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:33:05,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914742904] [2022-12-14 14:33:05,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914742904] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:33:05,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:33:05,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-14 14:33:05,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561549387] [2022-12-14 14:33:05,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:33:05,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 14:33:05,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:33:05,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 14:33:05,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:33:05,905 INFO L87 Difference]: Start difference. First operand has 403 states, 393 states have (on average 2.9567430025445294) internal successors, (1162), 402 states have internal predecessors, (1162), 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) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-12-14 14:33:05,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:33:05,966 INFO L93 Difference]: Finished difference Result 401 states and 1120 transitions. [2022-12-14 14:33:05,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 14:33:05,969 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) Word has length 1 [2022-12-14 14:33:05,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:33:05,982 INFO L225 Difference]: With dead ends: 401 [2022-12-14 14:33:05,982 INFO L226 Difference]: Without dead ends: 401 [2022-12-14 14:33:05,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:33:05,985 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:33:05,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:33:05,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-12-14 14:33:06,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2022-12-14 14:33:06,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 393 states have (on average 2.849872773536896) internal successors, (1120), 400 states have internal predecessors, (1120), 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) [2022-12-14 14:33:06,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1120 transitions. [2022-12-14 14:33:06,043 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1120 transitions. Word has length 1 [2022-12-14 14:33:06,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:33:06,043 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 1120 transitions. [2022-12-14 14:33:06,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-12-14 14:33:06,043 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1120 transitions. [2022-12-14 14:33:06,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 14:33:06,044 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:33:06,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 14:33:06,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:33:06,044 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)] === [2022-12-14 14:33:06,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:33:06,045 INFO L85 PathProgramCache]: Analyzing trace with hash 554565, now seen corresponding path program 1 times [2022-12-14 14:33:06,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:33:06,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007571322] [2022-12-14 14:33:06,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:33:06,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:33:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:33:06,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:33:06,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:33:06,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007571322] [2022-12-14 14:33:06,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007571322] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:33:06,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:33:06,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 14:33:06,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120325652] [2022-12-14 14:33:06,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:33:06,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:33:06,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:33:06,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:33:06,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:33:06,174 INFO L87 Difference]: Start difference. First operand 401 states and 1120 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-12-14 14:33:06,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:33:06,206 INFO L93 Difference]: Finished difference Result 383 states and 1082 transitions. [2022-12-14 14:33:06,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:33:06,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) Word has length 3 [2022-12-14 14:33:06,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:33:06,208 INFO L225 Difference]: With dead ends: 383 [2022-12-14 14:33:06,208 INFO L226 Difference]: Without dead ends: 383 [2022-12-14 14:33:06,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:33:06,210 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:33:06,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 9 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:33:06,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-12-14 14:33:06,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2022-12-14 14:33:06,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 377 states have (on average 2.870026525198939) internal successors, (1082), 382 states have internal predecessors, (1082), 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) [2022-12-14 14:33:06,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1082 transitions. [2022-12-14 14:33:06,222 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1082 transitions. Word has length 3 [2022-12-14 14:33:06,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:33:06,223 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 1082 transitions. [2022-12-14 14:33:06,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-12-14 14:33:06,223 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1082 transitions. [2022-12-14 14:33:06,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 14:33:06,223 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:33:06,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 14:33:06,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:33:06,224 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)] === [2022-12-14 14:33:06,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:33:06,224 INFO L85 PathProgramCache]: Analyzing trace with hash 554567, now seen corresponding path program 1 times [2022-12-14 14:33:06,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:33:06,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704383989] [2022-12-14 14:33:06,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:33:06,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:33:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:33:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:33:06,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:33:06,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704383989] [2022-12-14 14:33:06,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704383989] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:33:06,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:33:06,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 14:33:06,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208301655] [2022-12-14 14:33:06,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:33:06,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:33:06,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:33:06,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:33:06,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:33:06,321 INFO L87 Difference]: Start difference. First operand 383 states and 1082 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-12-14 14:33:06,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:33:06,353 INFO L93 Difference]: Finished difference Result 365 states and 1044 transitions. [2022-12-14 14:33:06,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:33:06,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) Word has length 3 [2022-12-14 14:33:06,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:33:06,356 INFO L225 Difference]: With dead ends: 365 [2022-12-14 14:33:06,356 INFO L226 Difference]: Without dead ends: 365 [2022-12-14 14:33:06,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:33:06,357 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:33:06,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 9 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:33:06,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-12-14 14:33:06,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2022-12-14 14:33:06,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 361 states have (on average 2.89196675900277) internal successors, (1044), 364 states have internal predecessors, (1044), 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) [2022-12-14 14:33:06,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 1044 transitions. [2022-12-14 14:33:06,367 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 1044 transitions. Word has length 3 [2022-12-14 14:33:06,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:33:06,367 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 1044 transitions. [2022-12-14 14:33:06,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-12-14 14:33:06,367 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 1044 transitions. [2022-12-14 14:33:06,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 14:33:06,368 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:33:06,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 14:33:06,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 14:33:06,368 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 14:33:06,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:33:06,369 INFO L85 PathProgramCache]: Analyzing trace with hash 532950393, now seen corresponding path program 1 times [2022-12-14 14:33:06,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:33:06,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995447886] [2022-12-14 14:33:06,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:33:06,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:33:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:33:06,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:33:06,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:33:06,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995447886] [2022-12-14 14:33:06,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995447886] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:33:06,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:33:06,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:33:06,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347330330] [2022-12-14 14:33:06,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:33:06,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:33:06,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:33:06,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:33:06,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:33:06,445 INFO L87 Difference]: Start difference. First operand 365 states and 1044 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-12-14 14:33:06,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:33:06,480 INFO L93 Difference]: Finished difference Result 284 states and 783 transitions. [2022-12-14 14:33:06,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:33:06,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2022-12-14 14:33:06,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:33:06,482 INFO L225 Difference]: With dead ends: 284 [2022-12-14 14:33:06,482 INFO L226 Difference]: Without dead ends: 284 [2022-12-14 14:33:06,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:33:06,483 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:33:06,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 9 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:33:06,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-12-14 14:33:06,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2022-12-14 14:33:06,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 281 states have (on average 2.786476868327402) internal successors, (783), 283 states have internal predecessors, (783), 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) [2022-12-14 14:33:06,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 783 transitions. [2022-12-14 14:33:06,490 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 783 transitions. Word has length 5 [2022-12-14 14:33:06,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:33:06,490 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 783 transitions. [2022-12-14 14:33:06,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-12-14 14:33:06,491 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 783 transitions. [2022-12-14 14:33:06,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 14:33:06,491 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:33:06,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 14:33:06,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 14:33:06,491 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 14:33:06,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:33:06,492 INFO L85 PathProgramCache]: Analyzing trace with hash 532950394, now seen corresponding path program 1 times [2022-12-14 14:33:06,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:33:06,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127109439] [2022-12-14 14:33:06,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:33:06,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:33:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:33:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:33:06,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:33:06,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127109439] [2022-12-14 14:33:06,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127109439] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:33:06,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:33:06,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 14:33:06,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165821472] [2022-12-14 14:33:06,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:33:06,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:33:06,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:33:06,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:33:06,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:33:06,530 INFO L87 Difference]: Start difference. First operand 284 states and 783 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-12-14 14:33:06,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:33:06,560 INFO L93 Difference]: Finished difference Result 203 states and 522 transitions. [2022-12-14 14:33:06,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:33:06,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2022-12-14 14:33:06,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:33:06,561 INFO L225 Difference]: With dead ends: 203 [2022-12-14 14:33:06,562 INFO L226 Difference]: Without dead ends: 203 [2022-12-14 14:33:06,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:33:06,563 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:33:06,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 9 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:33:06,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-12-14 14:33:06,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-12-14 14:33:06,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 201 states have (on average 2.5970149253731343) internal successors, (522), 202 states have internal predecessors, (522), 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) [2022-12-14 14:33:06,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 522 transitions. [2022-12-14 14:33:06,570 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 522 transitions. Word has length 5 [2022-12-14 14:33:06,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:33:06,570 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 522 transitions. [2022-12-14 14:33:06,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-12-14 14:33:06,570 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 522 transitions. [2022-12-14 14:33:06,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 14:33:06,572 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:33:06,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:33:06,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 14:33:06,572 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)] === [2022-12-14 14:33:06,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:33:06,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1238053402, now seen corresponding path program 1 times [2022-12-14 14:33:06,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:33:06,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657951924] [2022-12-14 14:33:06,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:33:06,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:33:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:33:06,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:33:06,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:33:06,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657951924] [2022-12-14 14:33:06,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657951924] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:33:06,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:33:06,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:33:06,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003659464] [2022-12-14 14:33:06,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:33:06,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:33:06,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:33:06,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:33:06,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:33:06,645 INFO L87 Difference]: Start difference. First operand 203 states and 522 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-12-14 14:33:06,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:33:06,698 INFO L93 Difference]: Finished difference Result 343 states and 899 transitions. [2022-12-14 14:33:06,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:33:06,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) Word has length 13 [2022-12-14 14:33:06,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:33:06,701 INFO L225 Difference]: With dead ends: 343 [2022-12-14 14:33:06,701 INFO L226 Difference]: Without dead ends: 343 [2022-12-14 14:33:06,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:33:06,702 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 20 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:33:06,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 23 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:33:06,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-12-14 14:33:06,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 223. [2022-12-14 14:33:06,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 221 states have (on average 2.5927601809954752) internal successors, (573), 222 states have internal predecessors, (573), 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) [2022-12-14 14:33:06,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 573 transitions. [2022-12-14 14:33:06,710 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 573 transitions. Word has length 13 [2022-12-14 14:33:06,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:33:06,710 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 573 transitions. [2022-12-14 14:33:06,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-12-14 14:33:06,711 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 573 transitions. [2022-12-14 14:33:06,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 14:33:06,712 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:33:06,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:33:06,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 14:33:06,712 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 14:33:06,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:33:06,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1588087942, now seen corresponding path program 1 times [2022-12-14 14:33:06,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:33:06,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855942319] [2022-12-14 14:33:06,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:33:06,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:33:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:33:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:33:06,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:33:06,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855942319] [2022-12-14 14:33:06,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855942319] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:33:06,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:33:06,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:33:06,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012050366] [2022-12-14 14:33:06,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:33:06,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:33:06,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:33:06,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:33:06,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:33:06,762 INFO L87 Difference]: Start difference. First operand 223 states and 573 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2022-12-14 14:33:06,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:33:06,812 INFO L93 Difference]: Finished difference Result 301 states and 756 transitions. [2022-12-14 14:33:06,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:33:06,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) Word has length 18 [2022-12-14 14:33:06,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:33:06,814 INFO L225 Difference]: With dead ends: 301 [2022-12-14 14:33:06,814 INFO L226 Difference]: Without dead ends: 279 [2022-12-14 14:33:06,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:33:06,815 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:33:06,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 9 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:33:06,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-12-14 14:33:06,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2022-12-14 14:33:06,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 277 states have (on average 2.5379061371841156) internal successors, (703), 278 states have internal predecessors, (703), 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) [2022-12-14 14:33:06,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 703 transitions. [2022-12-14 14:33:06,824 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 703 transitions. Word has length 18 [2022-12-14 14:33:06,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:33:06,825 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 703 transitions. [2022-12-14 14:33:06,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2022-12-14 14:33:06,825 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 703 transitions. [2022-12-14 14:33:06,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 14:33:06,826 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:33:06,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:33:06,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 14:33:06,827 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 14:33:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:33:06,827 INFO L85 PathProgramCache]: Analyzing trace with hash -496956333, now seen corresponding path program 1 times [2022-12-14 14:33:06,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:33:06,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129781370] [2022-12-14 14:33:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:33:06,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:33:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:33:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:33:06,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:33:06,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129781370] [2022-12-14 14:33:06,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129781370] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:33:06,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:33:06,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:33:06,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377299630] [2022-12-14 14:33:06,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:33:06,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:33:06,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:33:06,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:33:06,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:33:06,938 INFO L87 Difference]: Start difference. First operand 279 states and 703 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-12-14 14:33:06,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:33:06,986 INFO L93 Difference]: Finished difference Result 197 states and 413 transitions. [2022-12-14 14:33:06,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:33:06,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) Word has length 23 [2022-12-14 14:33:06,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:33:06,987 INFO L225 Difference]: With dead ends: 197 [2022-12-14 14:33:06,987 INFO L226 Difference]: Without dead ends: 197 [2022-12-14 14:33:06,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:33:06,988 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:33:06,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 7 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:33:06,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-12-14 14:33:06,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 181. [2022-12-14 14:33:06,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 179 states have (on average 2.1396648044692737) internal successors, (383), 180 states have internal predecessors, (383), 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) [2022-12-14 14:33:06,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 383 transitions. [2022-12-14 14:33:06,994 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 383 transitions. Word has length 23 [2022-12-14 14:33:06,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:33:06,995 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 383 transitions. [2022-12-14 14:33:06,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-12-14 14:33:06,995 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 383 transitions. [2022-12-14 14:33:06,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 14:33:06,996 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:33:06,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:33:06,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 14:33:06,996 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 14:33:06,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:33:06,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1764404943, now seen corresponding path program 2 times [2022-12-14 14:33:06,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:33:06,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433701833] [2022-12-14 14:33:06,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:33:06,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:33:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:33:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:33:07,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:33:07,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433701833] [2022-12-14 14:33:07,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433701833] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:33:07,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272319589] [2022-12-14 14:33:07,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:33:07,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:33:07,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:33:07,057 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:33:07,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:33:07,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 14:33:07,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:33:07,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:33:07,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:33:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:33:07,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:33:07,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:33:07,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272319589] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:33:07,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1391670441] [2022-12-14 14:33:07,249 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 14:33:07,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:33:07,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-12-14 14:33:07,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747680446] [2022-12-14 14:33:07,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:33:07,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:33:07,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:33:07,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:33:07,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:33:07,252 INFO L87 Difference]: Start difference. First operand 181 states and 383 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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) [2022-12-14 14:33:07,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:33:07,438 INFO L93 Difference]: Finished difference Result 835 states and 1661 transitions. [2022-12-14 14:33:07,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 14:33:07,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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) Word has length 23 [2022-12-14 14:33:07,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:33:07,442 INFO L225 Difference]: With dead ends: 835 [2022-12-14 14:33:07,442 INFO L226 Difference]: Without dead ends: 835 [2022-12-14 14:33:07,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2022-12-14 14:33:07,443 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 218 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:33:07,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 85 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:33:07,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-12-14 14:33:07,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 663. [2022-12-14 14:33:07,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 661 states have (on average 2.0302571860816943) internal successors, (1342), 662 states have internal predecessors, (1342), 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) [2022-12-14 14:33:07,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1342 transitions. [2022-12-14 14:33:07,464 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1342 transitions. Word has length 23 [2022-12-14 14:33:07,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:33:07,464 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 1342 transitions. [2022-12-14 14:33:07,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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) [2022-12-14 14:33:07,465 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1342 transitions. [2022-12-14 14:33:07,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-14 14:33:07,466 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:33:07,467 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:33:07,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:33:07,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:33:07,668 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 14:33:07,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:33:07,668 INFO L85 PathProgramCache]: Analyzing trace with hash 560732480, now seen corresponding path program 3 times [2022-12-14 14:33:07,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:33:07,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549150783] [2022-12-14 14:33:07,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:33:07,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:33:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:33:07,787 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 14:33:07,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:33:07,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549150783] [2022-12-14 14:33:07,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549150783] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:33:07,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537254818] [2022-12-14 14:33:07,787 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 14:33:07,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:33:07,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:33:07,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:33:07,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 14:33:07,880 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 14:33:07,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:33:07,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:33:07,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:33:07,927 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 14:33:07,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:33:07,974 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 14:33:07,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537254818] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:33:07,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1691106332] [2022-12-14 14:33:07,975 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 14:33:07,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:33:07,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-12-14 14:33:07,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535080278] [2022-12-14 14:33:07,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:33:07,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 14:33:07,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:33:07,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 14:33:07,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:33:07,977 INFO L87 Difference]: Start difference. First operand 663 states and 1342 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2022-12-14 14:33:08,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:33:08,065 INFO L93 Difference]: Finished difference Result 1067 states and 2104 transitions. [2022-12-14 14:33:08,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:33:08,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) Word has length 43 [2022-12-14 14:33:08,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:33:08,069 INFO L225 Difference]: With dead ends: 1067 [2022-12-14 14:33:08,069 INFO L226 Difference]: Without dead ends: 1067 [2022-12-14 14:33:08,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:33:08,070 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 84 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:33:08,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 51 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:33:08,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-12-14 14:33:08,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1067. [2022-12-14 14:33:08,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1065 states have (on average 1.9755868544600939) internal successors, (2104), 1066 states have internal predecessors, (2104), 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) [2022-12-14 14:33:08,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2104 transitions. [2022-12-14 14:33:08,097 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2104 transitions. Word has length 43 [2022-12-14 14:33:08,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:33:08,097 INFO L495 AbstractCegarLoop]: Abstraction has 1067 states and 2104 transitions. [2022-12-14 14:33:08,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2022-12-14 14:33:08,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2104 transitions. [2022-12-14 14:33:08,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 14:33:08,100 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:33:08,101 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:33:08,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 14:33:08,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 14:33:08,301 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 14:33:08,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:33:08,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1626716672, now seen corresponding path program 4 times [2022-12-14 14:33:08,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:33:08,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980158030] [2022-12-14 14:33:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:33:08,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:33:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:33:08,412 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-14 14:33:08,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:33:08,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980158030] [2022-12-14 14:33:08,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980158030] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:33:08,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:33:08,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:33:08,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028590043] [2022-12-14 14:33:08,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:33:08,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:33:08,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:33:08,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:33:08,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:33:08,414 INFO L87 Difference]: Start difference. First operand 1067 states and 2104 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2022-12-14 14:33:08,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:33:08,504 INFO L93 Difference]: Finished difference Result 987 states and 1877 transitions. [2022-12-14 14:33:08,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:33:08,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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) Word has length 53 [2022-12-14 14:33:08,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:33:08,511 INFO L225 Difference]: With dead ends: 987 [2022-12-14 14:33:08,511 INFO L226 Difference]: Without dead ends: 969 [2022-12-14 14:33:08,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:33:08,512 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 30 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:33:08,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 7 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:33:08,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2022-12-14 14:33:08,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 851. [2022-12-14 14:33:08,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 849 states have (on average 1.9104829210836278) internal successors, (1622), 850 states have internal predecessors, (1622), 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) [2022-12-14 14:33:08,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1622 transitions. [2022-12-14 14:33:08,538 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1622 transitions. Word has length 53 [2022-12-14 14:33:08,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:33:08,539 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1622 transitions. [2022-12-14 14:33:08,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2022-12-14 14:33:08,539 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1622 transitions. [2022-12-14 14:33:08,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 14:33:08,542 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:33:08,542 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:33:08,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 14:33:08,542 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 14:33:08,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:33:08,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1496284930, now seen corresponding path program 5 times [2022-12-14 14:33:08,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:33:08,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637200783] [2022-12-14 14:33:08,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:33:08,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:33:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:33:08,702 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 14:33:08,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:33:08,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637200783] [2022-12-14 14:33:08,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637200783] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:33:08,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:33:08,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 14:33:08,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080994450] [2022-12-14 14:33:08,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:33:08,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:33:08,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:33:08,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:33:08,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:33:08,704 INFO L87 Difference]: Start difference. First operand 851 states and 1622 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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) [2022-12-14 14:33:08,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:33:08,817 INFO L93 Difference]: Finished difference Result 724 states and 1373 transitions. [2022-12-14 14:33:08,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 14:33:08,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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) Word has length 53 [2022-12-14 14:33:08,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:33:08,820 INFO L225 Difference]: With dead ends: 724 [2022-12-14 14:33:08,820 INFO L226 Difference]: Without dead ends: 692 [2022-12-14 14:33:08,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-14 14:33:08,821 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 52 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:33:08,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 7 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:33:08,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-12-14 14:33:08,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 515. [2022-12-14 14:33:08,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 513 states have (on average 1.9181286549707601) internal successors, (984), 514 states have internal predecessors, (984), 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) [2022-12-14 14:33:08,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 984 transitions. [2022-12-14 14:33:08,834 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 984 transitions. Word has length 53 [2022-12-14 14:33:08,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:33:08,835 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 984 transitions. [2022-12-14 14:33:08,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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) [2022-12-14 14:33:08,835 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 984 transitions. [2022-12-14 14:33:08,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 14:33:08,836 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:33:08,836 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:33:08,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 14:33:08,837 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 14:33:08,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:33:08,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1999191684, now seen corresponding path program 6 times [2022-12-14 14:33:08,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:33:08,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825397021] [2022-12-14 14:33:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:33:08,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:33:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:33:09,310 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:33:09,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:33:09,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825397021] [2022-12-14 14:33:09,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825397021] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:33:09,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507798088] [2022-12-14 14:33:09,310 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 14:33:09,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:33:09,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:33:09,311 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:33:09,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 14:33:09,429 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 14:33:09,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:33:09,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 14:33:09,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:33:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:33:09,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:33:10,169 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:33:10,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507798088] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:33:10,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1336208936] [2022-12-14 14:33:10,169 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 14:33:10,170 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:33:10,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 29 [2022-12-14 14:33:10,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370991377] [2022-12-14 14:33:10,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:33:10,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-14 14:33:10,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:33:10,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-14 14:33:10,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2022-12-14 14:33:10,172 INFO L87 Difference]: Start difference. First operand 515 states and 984 transitions. Second operand has 31 states, 30 states have (on average 4.766666666666667) internal successors, (143), 30 states have internal predecessors, (143), 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) [2022-12-14 14:33:10,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:33:10,835 INFO L93 Difference]: Finished difference Result 666 states and 1225 transitions. [2022-12-14 14:33:10,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 14:33:10,835 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 4.766666666666667) internal successors, (143), 30 states have internal predecessors, (143), 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) Word has length 53 [2022-12-14 14:33:10,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:33:10,837 INFO L225 Difference]: With dead ends: 666 [2022-12-14 14:33:10,837 INFO L226 Difference]: Without dead ends: 512 [2022-12-14 14:33:10,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2022-12-14 14:33:10,837 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 110 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 14:33:10,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 863 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 14:33:10,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-12-14 14:33:10,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 504. [2022-12-14 14:33:10,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 1.8608349900596421) internal successors, (936), 503 states have internal predecessors, (936), 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) [2022-12-14 14:33:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 936 transitions. [2022-12-14 14:33:10,846 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 936 transitions. Word has length 53 [2022-12-14 14:33:10,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:33:10,847 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 936 transitions. [2022-12-14 14:33:10,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 4.766666666666667) internal successors, (143), 30 states have internal predecessors, (143), 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) [2022-12-14 14:33:10,847 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 936 transitions. [2022-12-14 14:33:10,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 14:33:10,848 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:33:10,848 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:33:10,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 14:33:11,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:33:11,049 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 14:33:11,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:33:11,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1999191649, now seen corresponding path program 1 times [2022-12-14 14:33:11,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:33:11,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734847629] [2022-12-14 14:33:11,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:33:11,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:33:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:33:11,398 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 14:33:11,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:33:11,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734847629] [2022-12-14 14:33:11,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734847629] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:33:11,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:33:11,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:33:11,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212451118] [2022-12-14 14:33:11,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:33:11,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:33:11,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:33:11,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:33:11,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:33:11,400 INFO L87 Difference]: Start difference. First operand 504 states and 936 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2022-12-14 14:33:11,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:33:11,440 INFO L93 Difference]: Finished difference Result 503 states and 935 transitions. [2022-12-14 14:33:11,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:33:11,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) Word has length 53 [2022-12-14 14:33:11,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:33:11,441 INFO L225 Difference]: With dead ends: 503 [2022-12-14 14:33:11,441 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 14:33:11,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:33:11,441 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:33:11,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 21 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:33:11,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 14:33:11,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 14:33:11,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-12-14 14:33:11,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 14:33:11,443 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2022-12-14 14:33:11,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:33:11,443 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 14:33:11,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2022-12-14 14:33:11,443 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 14:33:11,443 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 14:33:11,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2022-12-14 14:33:11,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-12-14 14:33:11,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-12-14 14:33:11,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-12-14 14:33:11,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-12-14 14:33:11,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-12-14 14:33:11,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-12-14 14:33:11,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-12-14 14:33:11,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2022-12-14 14:33:11,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-12-14 14:33:11,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-12-14 14:33:11,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-12-14 14:33:11,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 14:33:11,449 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:33:11,452 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 14:33:11,452 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:33:11,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:33:11 BasicIcfg [2022-12-14 14:33:11,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:33:11,454 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:33:11,454 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:33:11,455 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:33:11,455 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:32:59" (3/4) ... [2022-12-14 14:33:11,458 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 14:33:11,464 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-14 14:33:11,464 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-14 14:33:11,468 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-12-14 14:33:11,468 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-14 14:33:11,468 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 14:33:11,469 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 14:33:11,499 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 14:33:11,499 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:33:11,500 INFO L158 Benchmark]: Toolchain (without parser) took 12616.97ms. Allocated memory was 148.9MB in the beginning and 264.2MB in the end (delta: 115.3MB). Free memory was 111.4MB in the beginning and 129.1MB in the end (delta: -17.7MB). Peak memory consumption was 100.8MB. Max. memory is 16.1GB. [2022-12-14 14:33:11,500 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 148.9MB. Free memory is still 90.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:33:11,500 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.31ms. Allocated memory is still 148.9MB. Free memory was 111.0MB in the beginning and 84.5MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-12-14 14:33:11,501 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.50ms. Allocated memory is still 148.9MB. Free memory was 84.5MB in the beginning and 82.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:33:11,501 INFO L158 Benchmark]: Boogie Preprocessor took 21.27ms. Allocated memory is still 148.9MB. Free memory was 82.5MB in the beginning and 80.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:33:11,501 INFO L158 Benchmark]: RCFGBuilder took 394.37ms. Allocated memory was 148.9MB in the beginning and 264.2MB in the end (delta: 115.3MB). Free memory was 80.4MB in the beginning and 227.0MB in the end (delta: -146.7MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2022-12-14 14:33:11,502 INFO L158 Benchmark]: TraceAbstraction took 11693.16ms. Allocated memory is still 264.2MB. Free memory was 227.0MB in the beginning and 132.2MB in the end (delta: 94.8MB). Peak memory consumption was 93.8MB. Max. memory is 16.1GB. [2022-12-14 14:33:11,502 INFO L158 Benchmark]: Witness Printer took 45.14ms. Allocated memory is still 264.2MB. Free memory was 132.2MB in the beginning and 129.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 14:33:11,503 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 148.9MB. Free memory is still 90.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 424.31ms. Allocated memory is still 148.9MB. Free memory was 111.0MB in the beginning and 84.5MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.50ms. Allocated memory is still 148.9MB. Free memory was 84.5MB in the beginning and 82.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.27ms. Allocated memory is still 148.9MB. Free memory was 82.5MB in the beginning and 80.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 394.37ms. Allocated memory was 148.9MB in the beginning and 264.2MB in the end (delta: 115.3MB). Free memory was 80.4MB in the beginning and 227.0MB in the end (delta: -146.7MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * TraceAbstraction took 11693.16ms. Allocated memory is still 264.2MB. Free memory was 227.0MB in the beginning and 132.2MB in the end (delta: 94.8MB). Peak memory consumption was 93.8MB. Max. memory is 16.1GB. * Witness Printer took 45.14ms. Allocated memory is still 264.2MB. Free memory was 132.2MB in the beginning and 129.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.9s, 144 PlacesBefore, 44 PlacesAfterwards, 147 TransitionsBefore, 42 TransitionsAfterwards, 2314 CoEnabledTransitionPairs, 7 FixpointIterations, 80 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 11 ConcurrentYvCompositions, 5 ChoiceCompositions, 142 TotalNumberOfCompositions, 5314 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3894, independent: 3738, independent conditional: 0, independent unconditional: 3738, dependent: 156, dependent conditional: 0, dependent unconditional: 156, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1631, independent: 1598, independent conditional: 0, independent unconditional: 1598, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1631, independent: 1573, independent conditional: 0, independent unconditional: 1573, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 58, independent: 25, independent conditional: 0, independent unconditional: 25, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 67, independent: 23, independent conditional: 0, independent unconditional: 23, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3894, independent: 2140, independent conditional: 0, independent unconditional: 2140, dependent: 123, dependent conditional: 0, dependent unconditional: 123, unknown: 1631, unknown conditional: 0, unknown unconditional: 1631] , Statistics on independence cache: Total cache size (in pairs): 279, Positive cache size: 261, Positive conditional cache size: 0, Positive unconditional cache size: 261, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 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: 919]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 906]: 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, 183 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 11.6s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 683 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 683 mSDsluCounter, 1118 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 949 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2115 IncrementalHoareTripleChecker+Invalid, 2137 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 169 mSDtfsCounter, 2115 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 300 GetRequests, 224 SyntacticMatches, 5 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1067occurred in iteration=10, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 611 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 468 NumberOfCodeBlocks, 459 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 567 ConstructedInterpolants, 0 QuantifiedInterpolants, 3632 SizeOfPredicates, 1 NumberOfNonLiveVariables, 828 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 20 InterpolantComputations, 11 PerfectInterpolantSequences, 312/540 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! [2022-12-14 14:33:11,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7766e70-2bba-4b39-9d91-44ed9d1a74ac/bin/utaipan-gh47qXpMRh/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