./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe037.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4319629f-1e42-49a0-9b26-d15e3c3d0a32/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4319629f-1e42-49a0-9b26-d15e3c3d0a32/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4319629f-1e42-49a0-9b26-d15e3c3d0a32/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4319629f-1e42-49a0-9b26-d15e3c3d0a32/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe037.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4319629f-1e42-49a0-9b26-d15e3c3d0a32/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4319629f-1e42-49a0-9b26-d15e3c3d0a32/bin/utaipan-Q6hlc19bkW --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 8e4a27807726d35f891e97d8bb2a7e6664171035f3f5de29d992fc7dfa583447 --- 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-4e7fbc6 [2022-11-23 13:47:28,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:47:28,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:47:28,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:47:28,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:47:28,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:47:28,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:47:28,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:47:28,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:47:28,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:47:28,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:47:28,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:47:28,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:47:28,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:47:28,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:47:28,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:47:28,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:47:28,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:47:28,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:47:28,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:47:28,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:47:28,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:47:28,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:47:28,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:47:28,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:47:28,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:47:28,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:47:28,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:47:28,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:47:28,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:47:28,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:47:28,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:47:28,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:47:28,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:47:28,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:47:28,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:47:28,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:47:28,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:47:28,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:47:28,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:47:28,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:47:28,633 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4319629f-1e42-49a0-9b26-d15e3c3d0a32/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-23 13:47:28,668 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:47:28,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:47:28,668 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:47:28,669 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:47:28,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:47:28,670 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:47:28,670 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:47:28,670 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:47:28,671 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:47:28,671 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:47:28,671 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:47:28,671 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:47:28,672 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:47:28,672 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:47:28,672 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:47:28,673 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:47:28,673 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:47:28,673 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:47:28,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 13:47:28,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 13:47:28,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:47:28,675 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:47:28,675 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 13:47:28,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:47:28,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:47:28,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:47:28,676 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 13:47:28,677 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 13:47:28,677 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 13:47:28,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:47:28,678 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 13:47:28,678 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:47:28,678 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:47:28,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:47:28,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:47:28,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:47:28,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:47:28,680 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:47:28,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:47:28,680 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:47:28,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:47:28,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:47:28,681 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_4319629f-1e42-49a0-9b26-d15e3c3d0a32/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4319629f-1e42-49a0-9b26-d15e3c3d0a32/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e4a27807726d35f891e97d8bb2a7e6664171035f3f5de29d992fc7dfa583447 [2022-11-23 13:47:28,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:47:29,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:47:29,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:47:29,029 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:47:29,030 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:47:29,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4319629f-1e42-49a0-9b26-d15e3c3d0a32/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/pthread-wmm/safe037.i [2022-11-23 13:47:32,274 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:47:32,553 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:47:32,554 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4319629f-1e42-49a0-9b26-d15e3c3d0a32/sv-benchmarks/c/pthread-wmm/safe037.i [2022-11-23 13:47:32,577 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4319629f-1e42-49a0-9b26-d15e3c3d0a32/bin/utaipan-Q6hlc19bkW/data/113f36956/7d2bcb484375463e98fe4643a1f6ff8f/FLAGde065fec4 [2022-11-23 13:47:32,614 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4319629f-1e42-49a0-9b26-d15e3c3d0a32/bin/utaipan-Q6hlc19bkW/data/113f36956/7d2bcb484375463e98fe4643a1f6ff8f [2022-11-23 13:47:32,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:47:32,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:47:32,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:47:32,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:47:32,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:47:32,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:47:32" (1/1) ... [2022-11-23 13:47:32,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55032f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:32, skipping insertion in model container [2022-11-23 13:47:32,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:47:32" (1/1) ... [2022-11-23 13:47:32,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:47:32,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:47:32,911 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_4319629f-1e42-49a0-9b26-d15e3c3d0a32/sv-benchmarks/c/pthread-wmm/safe037.i[941,954] [2022-11-23 13:47:33,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:47:33,219 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:47:33,235 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_4319629f-1e42-49a0-9b26-d15e3c3d0a32/sv-benchmarks/c/pthread-wmm/safe037.i[941,954] [2022-11-23 13:47:33,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:47:33,337 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:47:33,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:33 WrapperNode [2022-11-23 13:47:33,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:47:33,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:47:33,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:47:33,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:47:33,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:33" (1/1) ... [2022-11-23 13:47:33,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:33" (1/1) ... [2022-11-23 13:47:33,388 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2022-11-23 13:47:33,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:47:33,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:47:33,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:47:33,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:47:33,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:33" (1/1) ... [2022-11-23 13:47:33,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:33" (1/1) ... [2022-11-23 13:47:33,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:33" (1/1) ... [2022-11-23 13:47:33,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:33" (1/1) ... [2022-11-23 13:47:33,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:33" (1/1) ... [2022-11-23 13:47:33,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:33" (1/1) ... [2022-11-23 13:47:33,418 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:33" (1/1) ... [2022-11-23 13:47:33,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:33" (1/1) ... [2022-11-23 13:47:33,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:47:33,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:47:33,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:47:33,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:47:33,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:33" (1/1) ... [2022-11-23 13:47:33,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:47:33,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4319629f-1e42-49a0-9b26-d15e3c3d0a32/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:47:33,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4319629f-1e42-49a0-9b26-d15e3c3d0a32/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:47:33,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4319629f-1e42-49a0-9b26-d15e3c3d0a32/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:47:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 13:47:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 13:47:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:47:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:47:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:47:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-23 13:47:33,554 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-23 13:47:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-23 13:47:33,555 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-23 13:47:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-23 13:47:33,555 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-23 13:47:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:47:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 13:47:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:47:33,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:47:33,557 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 13:47:33,729 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:47:33,732 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:47:34,056 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:47:34,069 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:47:34,079 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 13:47:34,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:47:34 BoogieIcfgContainer [2022-11-23 13:47:34,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:47:34,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:47:34,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:47:34,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:47:34,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:47:32" (1/3) ... [2022-11-23 13:47:34,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7101fe33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:47:34, skipping insertion in model container [2022-11-23 13:47:34,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:33" (2/3) ... [2022-11-23 13:47:34,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7101fe33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:47:34, skipping insertion in model container [2022-11-23 13:47:34,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:47:34" (3/3) ... [2022-11-23 13:47:34,096 INFO L112 eAbstractionObserver]: Analyzing ICFG safe037.i [2022-11-23 13:47:34,114 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:47:34,114 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-23 13:47:34,114 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 13:47:34,181 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 13:47:34,239 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 13:47:34,262 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 103 transitions, 221 flow [2022-11-23 13:47:34,265 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 103 transitions, 221 flow [2022-11-23 13:47:34,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 103 transitions, 221 flow [2022-11-23 13:47:34,338 INFO L130 PetriNetUnfolder]: 2/100 cut-off events. [2022-11-23 13:47:34,338 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 13:47:34,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 100 events. 2/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2022-11-23 13:47:34,346 INFO L119 LiptonReduction]: Number of co-enabled transitions 1800 [2022-11-23 13:47:38,238 INFO L134 LiptonReduction]: Checked pairs total: 3873 [2022-11-23 13:47:38,239 INFO L136 LiptonReduction]: Total number of compositions: 105 [2022-11-23 13:47:38,251 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 30 transitions, 75 flow [2022-11-23 13:47:38,344 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 404 states, 396 states have (on average 3.111111111111111) internal successors, (1232), 403 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:38,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:47:38,374 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;@cf6ebc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:47:38,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-23 13:47:38,379 INFO L276 IsEmpty]: Start isEmpty. Operand has 404 states, 396 states have (on average 3.111111111111111) internal successors, (1232), 403 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:38,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-23 13:47:38,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:47:38,384 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-23 13:47:38,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-23 13:47:38,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:47:38,391 INFO L85 PathProgramCache]: Analyzing trace with hash 368, now seen corresponding path program 1 times [2022-11-23 13:47:38,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:47:38,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918875890] [2022-11-23 13:47:38,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:47:38,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:47:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:47:38,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:47:38,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:47:38,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918875890] [2022-11-23 13:47:38,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918875890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:47:38,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:47:38,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-23 13:47:38,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752283819] [2022-11-23 13:47:38,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:47:38,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 13:47:38,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:47:38,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 13:47:38,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:47:38,599 INFO L87 Difference]: Start difference. First operand has 404 states, 396 states have (on average 3.111111111111111) internal successors, (1232), 403 states have internal predecessors, (1232), 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) [2022-11-23 13:47:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:47:38,670 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2022-11-23 13:47:38,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 13:47:38,672 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 [2022-11-23 13:47:38,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:47:38,689 INFO L225 Difference]: With dead ends: 362 [2022-11-23 13:47:38,689 INFO L226 Difference]: Without dead ends: 362 [2022-11-23 13:47:38,690 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 [2022-11-23 13:47:38,695 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:47:38,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:47:38,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-11-23 13:47:38,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2022-11-23 13:47:38,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 360 states have (on average 2.977777777777778) internal successors, (1072), 361 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:38,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 1072 transitions. [2022-11-23 13:47:38,771 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 1072 transitions. Word has length 1 [2022-11-23 13:47:38,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:47:38,772 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 1072 transitions. [2022-11-23 13:47:38,772 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) [2022-11-23 13:47:38,772 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 1072 transitions. [2022-11-23 13:47:38,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 13:47:38,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:47:38,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:47:38,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:47:38,775 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-23 13:47:38,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:47:38,776 INFO L85 PathProgramCache]: Analyzing trace with hash -728086015, now seen corresponding path program 1 times [2022-11-23 13:47:38,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:47:38,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581736709] [2022-11-23 13:47:38,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:47:38,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:47:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:47:39,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:47:39,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:47:39,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581736709] [2022-11-23 13:47:39,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581736709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:47:39,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:47:39,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:47:39,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579076494] [2022-11-23 13:47:39,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:47:39,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:47:39,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:47:39,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:47:39,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:47:39,377 INFO L87 Difference]: Start difference. First operand 362 states and 1072 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:39,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:47:39,499 INFO L93 Difference]: Finished difference Result 318 states and 811 transitions. [2022-11-23 13:47:39,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:47:39,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-11-23 13:47:39,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:47:39,506 INFO L225 Difference]: With dead ends: 318 [2022-11-23 13:47:39,506 INFO L226 Difference]: Without dead ends: 254 [2022-11-23 13:47:39,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:47:39,509 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:47:39,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 15 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:47:39,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-23 13:47:39,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2022-11-23 13:47:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 252 states have (on average 2.5396825396825395) internal successors, (640), 253 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:39,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 640 transitions. [2022-11-23 13:47:39,552 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 640 transitions. Word has length 8 [2022-11-23 13:47:39,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:47:39,554 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 640 transitions. [2022-11-23 13:47:39,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:39,556 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 640 transitions. [2022-11-23 13:47:39,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 13:47:39,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:47:39,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:47:39,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:47:39,561 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-23 13:47:39,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:47:39,563 INFO L85 PathProgramCache]: Analyzing trace with hash -833706250, now seen corresponding path program 1 times [2022-11-23 13:47:39,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:47:39,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995148931] [2022-11-23 13:47:39,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:47:39,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:47:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:47:39,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:47:39,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:47:39,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995148931] [2022-11-23 13:47:39,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995148931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:47:39,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:47:39,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:47:39,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297081544] [2022-11-23 13:47:39,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:47:39,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:47:39,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:47:39,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:47:39,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:47:39,830 INFO L87 Difference]: Start difference. First operand 254 states and 640 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:39,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:47:39,935 INFO L93 Difference]: Finished difference Result 183 states and 406 transitions. [2022-11-23 13:47:39,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:47:39,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2022-11-23 13:47:39,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:47:39,937 INFO L225 Difference]: With dead ends: 183 [2022-11-23 13:47:39,937 INFO L226 Difference]: Without dead ends: 146 [2022-11-23 13:47:39,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-23 13:47:39,942 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 40 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:47:39,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 21 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:47:39,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-23 13:47:39,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2022-11-23 13:47:39,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 144 states have (on average 2.1944444444444446) internal successors, (316), 145 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:39,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 316 transitions. [2022-11-23 13:47:39,958 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 316 transitions. Word has length 11 [2022-11-23 13:47:39,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:47:39,960 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 316 transitions. [2022-11-23 13:47:39,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:39,961 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 316 transitions. [2022-11-23 13:47:39,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 13:47:39,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:47:39,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:47:39,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:47:39,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-23 13:47:39,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:47:39,965 INFO L85 PathProgramCache]: Analyzing trace with hash 157459806, now seen corresponding path program 1 times [2022-11-23 13:47:39,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:47:39,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752552260] [2022-11-23 13:47:39,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:47:39,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:47:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:47:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:47:40,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:47:40,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752552260] [2022-11-23 13:47:40,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752552260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:47:40,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:47:40,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:47:40,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240707548] [2022-11-23 13:47:40,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:47:40,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 13:47:40,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:47:40,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 13:47:40,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-23 13:47:40,276 INFO L87 Difference]: Start difference. First operand 146 states and 316 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:40,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:47:40,388 INFO L93 Difference]: Finished difference Result 120 states and 262 transitions. [2022-11-23 13:47:40,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:47:40,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2022-11-23 13:47:40,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:47:40,390 INFO L225 Difference]: With dead ends: 120 [2022-11-23 13:47:40,390 INFO L226 Difference]: Without dead ends: 110 [2022-11-23 13:47:40,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:47:40,395 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 60 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:47:40,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:47:40,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-23 13:47:40,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-11-23 13:47:40,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 108 states have (on average 2.259259259259259) internal successors, (244), 109 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:40,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 244 transitions. [2022-11-23 13:47:40,430 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 244 transitions. Word has length 14 [2022-11-23 13:47:40,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:47:40,432 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 244 transitions. [2022-11-23 13:47:40,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:40,434 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 244 transitions. [2022-11-23 13:47:40,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 13:47:40,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:47:40,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:47:40,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 13:47:40,442 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-23 13:47:40,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:47:40,444 INFO L85 PathProgramCache]: Analyzing trace with hash -79553786, now seen corresponding path program 1 times [2022-11-23 13:47:40,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:47:40,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625545653] [2022-11-23 13:47:40,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:47:40,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:47:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:47:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:47:40,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:47:40,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625545653] [2022-11-23 13:47:40,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625545653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:47:40,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:47:40,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:47:40,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944010643] [2022-11-23 13:47:40,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:47:40,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:47:40,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:47:40,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:47:40,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:47:40,633 INFO L87 Difference]: Start difference. First operand 110 states and 244 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:40,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:47:40,699 INFO L93 Difference]: Finished difference Result 137 states and 293 transitions. [2022-11-23 13:47:40,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:47:40,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-11-23 13:47:40,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:47:40,701 INFO L225 Difference]: With dead ends: 137 [2022-11-23 13:47:40,702 INFO L226 Difference]: Without dead ends: 137 [2022-11-23 13:47:40,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:47:40,703 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 17 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:47:40,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 10 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:47:40,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-23 13:47:40,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2022-11-23 13:47:40,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 133 states have (on average 2.1954887218045114) internal successors, (292), 134 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:40,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 292 transitions. [2022-11-23 13:47:40,710 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 292 transitions. Word has length 17 [2022-11-23 13:47:40,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:47:40,710 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 292 transitions. [2022-11-23 13:47:40,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:40,711 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 292 transitions. [2022-11-23 13:47:40,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 13:47:40,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:47:40,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:47:40,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 13:47:40,712 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-23 13:47:40,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:47:40,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1324934278, now seen corresponding path program 2 times [2022-11-23 13:47:40,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:47:40,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354775680] [2022-11-23 13:47:40,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:47:40,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:47:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:47:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:47:40,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:47:40,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354775680] [2022-11-23 13:47:40,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354775680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:47:40,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:47:40,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:47:40,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229533514] [2022-11-23 13:47:40,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:47:40,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:47:40,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:47:40,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:47:40,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:47:40,866 INFO L87 Difference]: Start difference. First operand 135 states and 292 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:40,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:47:40,953 INFO L93 Difference]: Finished difference Result 187 states and 389 transitions. [2022-11-23 13:47:40,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:47:40,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-11-23 13:47:40,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:47:40,955 INFO L225 Difference]: With dead ends: 187 [2022-11-23 13:47:40,955 INFO L226 Difference]: Without dead ends: 187 [2022-11-23 13:47:40,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:47:40,956 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:47:40,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 10 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:47:40,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-23 13:47:40,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 129. [2022-11-23 13:47:40,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 127 states have (on average 2.1968503937007875) internal successors, (279), 128 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:40,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 279 transitions. [2022-11-23 13:47:40,962 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 279 transitions. Word has length 17 [2022-11-23 13:47:40,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:47:40,962 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 279 transitions. [2022-11-23 13:47:40,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:40,963 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 279 transitions. [2022-11-23 13:47:40,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 13:47:40,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:47:40,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:47:40,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 13:47:40,964 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-23 13:47:40,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:47:40,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1972381532, now seen corresponding path program 3 times [2022-11-23 13:47:40,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:47:40,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999262910] [2022-11-23 13:47:40,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:47:40,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:47:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:47:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:47:41,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:47:41,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999262910] [2022-11-23 13:47:41,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999262910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:47:41,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:47:41,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:47:41,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853606119] [2022-11-23 13:47:41,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:47:41,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:47:41,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:47:41,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:47:41,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:47:41,136 INFO L87 Difference]: Start difference. First operand 129 states and 279 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:41,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:47:41,214 INFO L93 Difference]: Finished difference Result 153 states and 326 transitions. [2022-11-23 13:47:41,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:47:41,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-11-23 13:47:41,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:47:41,216 INFO L225 Difference]: With dead ends: 153 [2022-11-23 13:47:41,216 INFO L226 Difference]: Without dead ends: 153 [2022-11-23 13:47:41,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:47:41,217 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:47:41,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 7 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:47:41,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-23 13:47:41,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 109. [2022-11-23 13:47:41,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 2.25) internal successors, (243), 108 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:41,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2022-11-23 13:47:41,223 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 17 [2022-11-23 13:47:41,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:47:41,223 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2022-11-23 13:47:41,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:41,224 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2022-11-23 13:47:41,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 13:47:41,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:47:41,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:47:41,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 13:47:41,225 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-23 13:47:41,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:47:41,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1828800246, now seen corresponding path program 1 times [2022-11-23 13:47:41,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:47:41,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366055084] [2022-11-23 13:47:41,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:47:41,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:47:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:47:41,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:47:41,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:47:41,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366055084] [2022-11-23 13:47:41,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366055084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:47:41,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:47:41,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 13:47:41,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262402741] [2022-11-23 13:47:41,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:47:41,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 13:47:41,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:47:41,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 13:47:41,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-23 13:47:41,883 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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) [2022-11-23 13:47:42,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:47:42,095 INFO L93 Difference]: Finished difference Result 186 states and 412 transitions. [2022-11-23 13:47:42,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 13:47:42,096 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 [2022-11-23 13:47:42,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:47:42,097 INFO L225 Difference]: With dead ends: 186 [2022-11-23 13:47:42,097 INFO L226 Difference]: Without dead ends: 106 [2022-11-23 13:47:42,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-23 13:47:42,098 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:47:42,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 49 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:47:42,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-23 13:47:42,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-11-23 13:47:42,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.257142857142857) internal successors, (237), 105 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:42,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 237 transitions. [2022-11-23 13:47:42,103 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 237 transitions. Word has length 18 [2022-11-23 13:47:42,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:47:42,103 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 237 transitions. [2022-11-23 13:47:42,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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) [2022-11-23 13:47:42,104 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 237 transitions. [2022-11-23 13:47:42,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 13:47:42,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:47:42,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:47:42,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 13:47:42,105 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-23 13:47:42,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:47:42,106 INFO L85 PathProgramCache]: Analyzing trace with hash -368405612, now seen corresponding path program 2 times [2022-11-23 13:47:42,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:47:42,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090072772] [2022-11-23 13:47:42,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:47:42,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:47:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:47:42,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:47:42,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:47:42,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090072772] [2022-11-23 13:47:42,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090072772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:47:42,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:47:42,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 13:47:42,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815613464] [2022-11-23 13:47:42,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:47:42,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 13:47:42,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:47:42,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 13:47:42,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-23 13:47:42,579 INFO L87 Difference]: Start difference. First operand 106 states and 237 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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) [2022-11-23 13:47:42,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:47:42,755 INFO L93 Difference]: Finished difference Result 168 states and 372 transitions. [2022-11-23 13:47:42,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 13:47:42,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 [2022-11-23 13:47:42,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:47:42,756 INFO L225 Difference]: With dead ends: 168 [2022-11-23 13:47:42,756 INFO L226 Difference]: Without dead ends: 91 [2022-11-23 13:47:42,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-23 13:47:42,757 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:47:42,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 39 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:47:42,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-23 13:47:42,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-11-23 13:47:42,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 2.2) internal successors, (198), 90 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:47:42,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 198 transitions. [2022-11-23 13:47:42,762 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 198 transitions. Word has length 18 [2022-11-23 13:47:42,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:47:42,762 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 198 transitions. [2022-11-23 13:47:42,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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) [2022-11-23 13:47:42,763 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 198 transitions. [2022-11-23 13:47:42,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 13:47:42,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:47:42,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:47:42,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 13:47:42,764 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-23 13:47:42,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:47:42,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1722750026, now seen corresponding path program 3 times [2022-11-23 13:47:42,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:47:42,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442015676] [2022-11-23 13:47:42,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:47:42,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:47:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:47:43,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:47:43,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:47:43,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442015676] [2022-11-23 13:47:43,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442015676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:47:43,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:47:43,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 13:47:43,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000250367] [2022-11-23 13:47:43,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:47:43,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 13:47:43,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:47:43,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 13:47:43,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-23 13:47:43,221 INFO L87 Difference]: Start difference. First operand 91 states and 198 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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) [2022-11-23 13:47:43,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:47:43,372 INFO L93 Difference]: Finished difference Result 115 states and 245 transitions. [2022-11-23 13:47:43,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 13:47:43,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 [2022-11-23 13:47:43,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:47:43,373 INFO L225 Difference]: With dead ends: 115 [2022-11-23 13:47:43,373 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 13:47:43,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-23 13:47:43,374 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:47:43,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 34 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:47:43,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 13:47:43,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 13:47:43,375 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) [2022-11-23 13:47:43,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 13:47:43,376 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2022-11-23 13:47:43,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:47:43,376 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 13:47:43,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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) [2022-11-23 13:47:43,376 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 13:47:43,376 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 13:47:43,379 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2022-11-23 13:47:43,380 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2022-11-23 13:47:43,380 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2022-11-23 13:47:43,380 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2022-11-23 13:47:43,380 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2022-11-23 13:47:43,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2022-11-23 13:47:43,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2022-11-23 13:47:43,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2022-11-23 13:47:43,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2022-11-23 13:47:43,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2022-11-23 13:47:43,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2022-11-23 13:47:43,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 13:47:43,389 INFO L444 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1] [2022-11-23 13:47:43,392 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 13:47:43,392 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 13:47:43,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:47:43 BasicIcfg [2022-11-23 13:47:43,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 13:47:43,397 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 13:47:43,398 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 13:47:43,398 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 13:47:43,398 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:47:34" (3/4) ... [2022-11-23 13:47:43,402 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 13:47:43,410 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-23 13:47:43,410 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-23 13:47:43,410 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-23 13:47:43,419 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-23 13:47:43,419 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-23 13:47:43,419 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 13:47:43,420 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 13:47:43,467 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4319629f-1e42-49a0-9b26-d15e3c3d0a32/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 13:47:43,467 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 13:47:43,468 INFO L158 Benchmark]: Toolchain (without parser) took 10845.89ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 112.4MB in the beginning and 104.1MB in the end (delta: 8.3MB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. [2022-11-23 13:47:43,468 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 115.3MB. Free memory is still 90.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:47:43,469 INFO L158 Benchmark]: CACSL2BoogieTranslator took 709.93ms. Allocated memory is still 153.1MB. Free memory was 112.4MB in the beginning and 92.3MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 13:47:43,469 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.90ms. Allocated memory is still 153.1MB. Free memory was 92.3MB in the beginning and 90.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 13:47:43,470 INFO L158 Benchmark]: Boogie Preprocessor took 33.30ms. Allocated memory is still 153.1MB. Free memory was 90.2MB in the beginning and 88.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 13:47:43,470 INFO L158 Benchmark]: RCFGBuilder took 658.79ms. Allocated memory is still 153.1MB. Free memory was 88.5MB in the beginning and 73.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 13:47:43,471 INFO L158 Benchmark]: TraceAbstraction took 9312.15ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 73.4MB in the beginning and 107.3MB in the end (delta: -33.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:47:43,471 INFO L158 Benchmark]: Witness Printer took 69.76ms. Allocated memory is still 184.5MB. Free memory was 107.3MB in the beginning and 104.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 13:47:43,475 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 115.3MB. Free memory is still 90.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 709.93ms. Allocated memory is still 153.1MB. Free memory was 112.4MB in the beginning and 92.3MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.90ms. Allocated memory is still 153.1MB. Free memory was 92.3MB in the beginning and 90.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.30ms. Allocated memory is still 153.1MB. Free memory was 90.2MB in the beginning and 88.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 658.79ms. Allocated memory is still 153.1MB. Free memory was 88.5MB in the beginning and 73.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 9312.15ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 73.4MB in the beginning and 107.3MB in the end (delta: -33.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 69.76ms. Allocated memory is still 184.5MB. Free memory was 107.3MB in the beginning and 104.1MB 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: 4.0s, 111 PlacesBefore, 39 PlacesAfterwards, 103 TransitionsBefore, 30 TransitionsAfterwards, 1800 CoEnabledTransitionPairs, 7 FixpointIterations, 33 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 105 TotalNumberOfCompositions, 3873 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2567, independent: 2452, independent conditional: 0, independent unconditional: 2452, dependent: 115, dependent conditional: 0, dependent unconditional: 115, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1366, independent: 1336, independent conditional: 0, independent unconditional: 1336, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1366, independent: 1329, independent conditional: 0, independent unconditional: 1329, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 37, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 107, independent: 30, independent conditional: 0, independent unconditional: 30, dependent: 76, dependent conditional: 0, dependent unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2567, independent: 1116, independent conditional: 0, independent unconditional: 1116, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 1366, unknown conditional: 0, unknown unconditional: 1366] , Statistics on independence cache: Total cache size (in pairs): 117, Positive cache size: 106, Positive conditional cache size: 0, Positive unconditional cache size: 106, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 784]: 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 7 procedures, 126 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 9.2s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 225 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 225 mSDsluCounter, 206 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 143 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 898 IncrementalHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 63 mSDtfsCounter, 898 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=404occurred in iteration=0, InterpolantAutomatonStates: 56, 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, 10 MinimizatonAttempts, 104 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 1476 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-23 13:47:43,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4319629f-1e42-49a0-9b26-d15e3c3d0a32/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE