./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi003_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b 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_11fd5bc1-804e-475b-9ae3-03d2f1a796fc/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd5bc1-804e-475b-9ae3-03d2f1a796fc/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd5bc1-804e-475b-9ae3-03d2f1a796fc/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd5bc1-804e-475b-9ae3-03d2f1a796fc/bin/utaipan-6cKwYrpEi9/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi003_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd5bc1-804e-475b-9ae3-03d2f1a796fc/bin/utaipan-6cKwYrpEi9/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd5bc1-804e-475b-9ae3-03d2f1a796fc/bin/utaipan-6cKwYrpEi9 --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 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 --- 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-6b4ec56 [2022-11-20 20:23:22,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:23:22,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:23:22,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:23:22,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:23:22,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:23:22,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:23:22,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:23:22,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:23:22,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:23:22,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:23:22,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:23:22,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:23:22,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:23:22,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:23:22,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:23:22,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:23:22,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:23:22,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:23:22,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:23:22,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:23:22,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:23:22,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:23:22,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:23:22,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:23:22,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:23:22,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:23:22,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:23:22,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:23:22,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:23:22,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:23:22,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:23:22,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:23:22,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:23:22,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:23:22,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:23:22,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:23:22,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:23:22,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:23:22,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:23:22,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:23:22,652 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd5bc1-804e-475b-9ae3-03d2f1a796fc/bin/utaipan-6cKwYrpEi9/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-20 20:23:22,692 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:23:22,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:23:22,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:23:22,694 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:23:22,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:23:22,695 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:23:22,695 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:23:22,695 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:23:22,695 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:23:22,695 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:23:22,696 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:23:22,697 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:23:22,697 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:23:22,697 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:23:22,697 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:23:22,698 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:23:22,698 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:23:22,698 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:23:22,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 20:23:22,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 20:23:22,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:23:22,701 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:23:22,701 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 20:23:22,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:23:22,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:23:22,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:23:22,702 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 20:23:22,702 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 20:23:22,702 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 20:23:22,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:23:22,703 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 20:23:22,703 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:23:22,703 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:23:22,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:23:22,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:23:22,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:23:22,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:23:22,704 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:23:22,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:23:22,705 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:23:22,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:23:22,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:23:22,706 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_11fd5bc1-804e-475b-9ae3-03d2f1a796fc/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd5bc1-804e-475b-9ae3-03d2f1a796fc/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 [2022-11-20 20:23:23,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:23:23,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:23:23,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:23:23,037 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:23:23,038 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:23:23,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd5bc1-804e-475b-9ae3-03d2f1a796fc/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/pthread-wmm/rfi003_tso.i [2022-11-20 20:23:26,032 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:23:26,365 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:23:26,366 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd5bc1-804e-475b-9ae3-03d2f1a796fc/sv-benchmarks/c/pthread-wmm/rfi003_tso.i [2022-11-20 20:23:26,388 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd5bc1-804e-475b-9ae3-03d2f1a796fc/bin/utaipan-6cKwYrpEi9/data/da5d3ac61/6bec41f91cb04d3d832a65416954ef02/FLAGa8501c5c6 [2022-11-20 20:23:26,407 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd5bc1-804e-475b-9ae3-03d2f1a796fc/bin/utaipan-6cKwYrpEi9/data/da5d3ac61/6bec41f91cb04d3d832a65416954ef02 [2022-11-20 20:23:26,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:23:26,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:23:26,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:23:26,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:23:26,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:23:26,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:23:26" (1/1) ... [2022-11-20 20:23:26,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6adc76ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:26, skipping insertion in model container [2022-11-20 20:23:26,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:23:26" (1/1) ... [2022-11-20 20:23:26,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:23:26,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:23:26,637 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_11fd5bc1-804e-475b-9ae3-03d2f1a796fc/sv-benchmarks/c/pthread-wmm/rfi003_tso.i[944,957] [2022-11-20 20:23:26,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:23:26,917 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:23:26,931 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_11fd5bc1-804e-475b-9ae3-03d2f1a796fc/sv-benchmarks/c/pthread-wmm/rfi003_tso.i[944,957] [2022-11-20 20:23:27,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:23:27,065 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:23:27,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:27 WrapperNode [2022-11-20 20:23:27,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:23:27,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:23:27,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:23:27,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:23:27,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:27" (1/1) ... [2022-11-20 20:23:27,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:27" (1/1) ... [2022-11-20 20:23:27,158 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 165 [2022-11-20 20:23:27,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:23:27,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:23:27,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:23:27,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:23:27,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:27" (1/1) ... [2022-11-20 20:23:27,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:27" (1/1) ... [2022-11-20 20:23:27,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:27" (1/1) ... [2022-11-20 20:23:27,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:27" (1/1) ... [2022-11-20 20:23:27,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:27" (1/1) ... [2022-11-20 20:23:27,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:27" (1/1) ... [2022-11-20 20:23:27,186 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:27" (1/1) ... [2022-11-20 20:23:27,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:27" (1/1) ... [2022-11-20 20:23:27,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:23:27,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:23:27,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:23:27,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:23:27,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:27" (1/1) ... [2022-11-20 20:23:27,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:23:27,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd5bc1-804e-475b-9ae3-03d2f1a796fc/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:23:27,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd5bc1-804e-475b-9ae3-03d2f1a796fc/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:23:27,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd5bc1-804e-475b-9ae3-03d2f1a796fc/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:23:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:23:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 20:23:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:23:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:23:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:23:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-20 20:23:27,307 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-20 20:23:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-20 20:23:27,307 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-20 20:23:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:23:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 20:23:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:23:27,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:23:27,310 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 20:23:27,453 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:23:27,456 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:23:28,008 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:23:28,309 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:23:28,309 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 20:23:28,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:23:28 BoogieIcfgContainer [2022-11-20 20:23:28,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:23:28,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:23:28,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:23:28,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:23:28,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:23:26" (1/3) ... [2022-11-20 20:23:28,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@acd6ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:23:28, skipping insertion in model container [2022-11-20 20:23:28,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:23:27" (2/3) ... [2022-11-20 20:23:28,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@acd6ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:23:28, skipping insertion in model container [2022-11-20 20:23:28,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:23:28" (3/3) ... [2022-11-20 20:23:28,326 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2022-11-20 20:23:28,347 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:23:28,347 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-20 20:23:28,347 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 20:23:28,432 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 20:23:28,481 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 20:23:28,504 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 107 transitions, 224 flow [2022-11-20 20:23:28,508 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 107 transitions, 224 flow [2022-11-20 20:23:28,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 107 transitions, 224 flow [2022-11-20 20:23:28,596 INFO L130 PetriNetUnfolder]: 2/105 cut-off events. [2022-11-20 20:23:28,596 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 20:23:28,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 105 events. 2/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-11-20 20:23:28,607 INFO L119 LiptonReduction]: Number of co-enabled transitions 1528 [2022-11-20 20:23:33,579 INFO L134 LiptonReduction]: Checked pairs total: 5106 [2022-11-20 20:23:33,580 INFO L136 LiptonReduction]: Total number of compositions: 107 [2022-11-20 20:23:33,595 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 29 transitions, 68 flow [2022-11-20 20:23:33,672 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 334 states, 325 states have (on average 2.686153846153846) internal successors, (873), 333 states have internal predecessors, (873), 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) [2022-11-20 20:23:33,698 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:23:33,706 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;@2a4308bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:23:33,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-20 20:23:33,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 325 states have (on average 2.686153846153846) internal successors, (873), 333 states have internal predecessors, (873), 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) [2022-11-20 20:23:33,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-20 20:23:33,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:23:33,719 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-20 20:23:33,720 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:23:33,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:23:33,729 INFO L85 PathProgramCache]: Analyzing trace with hash 544, now seen corresponding path program 1 times [2022-11-20 20:23:33,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:23:33,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615850344] [2022-11-20 20:23:33,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:23:33,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:23:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:23:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:23:33,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:23:33,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615850344] [2022-11-20 20:23:33,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615850344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:23:33,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:23:33,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-20 20:23:33,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413296650] [2022-11-20 20:23:33,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:23:33,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:23:33,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:23:33,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:23:33,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:23:33,922 INFO L87 Difference]: Start difference. First operand has 334 states, 325 states have (on average 2.686153846153846) internal successors, (873), 333 states have internal predecessors, (873), 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) [2022-11-20 20:23:34,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:23:34,024 INFO L93 Difference]: Finished difference Result 320 states and 801 transitions. [2022-11-20 20:23:34,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:23:34,028 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 [2022-11-20 20:23:34,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:23:34,049 INFO L225 Difference]: With dead ends: 320 [2022-11-20 20:23:34,049 INFO L226 Difference]: Without dead ends: 320 [2022-11-20 20:23:34,050 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 [2022-11-20 20:23:34,055 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:23:34,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:23:34,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-11-20 20:23:34,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-11-20 20:23:34,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 315 states have (on average 2.5428571428571427) internal successors, (801), 319 states have internal predecessors, (801), 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) [2022-11-20 20:23:34,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 801 transitions. [2022-11-20 20:23:34,142 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 801 transitions. Word has length 1 [2022-11-20 20:23:34,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:23:34,144 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 801 transitions. [2022-11-20 20:23:34,146 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) [2022-11-20 20:23:34,147 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 801 transitions. [2022-11-20 20:23:34,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 20:23:34,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:23:34,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 20:23:34,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:23:34,150 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:23:34,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:23:34,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1244141810, now seen corresponding path program 1 times [2022-11-20 20:23:34,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:23:34,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549423022] [2022-11-20 20:23:34,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:23:34,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:23:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:23:34,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:23:34,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:23:34,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549423022] [2022-11-20 20:23:34,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549423022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:23:34,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:23:34,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 20:23:34,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942471169] [2022-11-20 20:23:34,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:23:34,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:23:34,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:23:34,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:23:34,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:23:34,532 INFO L87 Difference]: Start difference. First operand 320 states and 801 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-20 20:23:34,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:23:34,618 INFO L93 Difference]: Finished difference Result 278 states and 688 transitions. [2022-11-20 20:23:34,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:23:34,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-11-20 20:23:34,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:23:34,621 INFO L225 Difference]: With dead ends: 278 [2022-11-20 20:23:34,621 INFO L226 Difference]: Without dead ends: 266 [2022-11-20 20:23:34,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:23:34,622 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 7 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:23:34,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:23:34,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-20 20:23:34,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2022-11-20 20:23:34,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 264 states have (on average 2.5) internal successors, (660), 265 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:23:34,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 660 transitions. [2022-11-20 20:23:34,634 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 660 transitions. Word has length 6 [2022-11-20 20:23:34,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:23:34,634 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 660 transitions. [2022-11-20 20:23:34,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-20 20:23:34,635 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 660 transitions. [2022-11-20 20:23:34,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 20:23:34,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:23:34,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:23:34,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:23:34,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:23:34,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:23:34,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1617706826, now seen corresponding path program 1 times [2022-11-20 20:23:34,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:23:34,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518180060] [2022-11-20 20:23:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:23:34,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:23:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:23:35,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:23:35,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:23:35,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518180060] [2022-11-20 20:23:35,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518180060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:23:35,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:23:35,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:23:35,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171272629] [2022-11-20 20:23:35,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:23:35,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:23:35,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:23:35,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:23:35,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:23:35,589 INFO L87 Difference]: Start difference. First operand 266 states and 660 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2022-11-20 20:23:35,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:23:35,770 INFO L93 Difference]: Finished difference Result 278 states and 664 transitions. [2022-11-20 20:23:35,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:23:35,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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 [2022-11-20 20:23:35,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:23:35,773 INFO L225 Difference]: With dead ends: 278 [2022-11-20 20:23:35,773 INFO L226 Difference]: Without dead ends: 278 [2022-11-20 20:23:35,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:23:35,774 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 43 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:23:35,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:23:35,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-20 20:23:35,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 260. [2022-11-20 20:23:35,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 258 states have (on average 2.4689922480620154) internal successors, (637), 259 states have internal predecessors, (637), 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) [2022-11-20 20:23:35,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 637 transitions. [2022-11-20 20:23:35,797 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 637 transitions. Word has length 8 [2022-11-20 20:23:35,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:23:35,797 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 637 transitions. [2022-11-20 20:23:35,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2022-11-20 20:23:35,798 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 637 transitions. [2022-11-20 20:23:35,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 20:23:35,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:23:35,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:23:35,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:23:35,801 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:23:35,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:23:35,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1617706781, now seen corresponding path program 1 times [2022-11-20 20:23:35,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:23:35,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327344517] [2022-11-20 20:23:35,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:23:35,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:23:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:23:36,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:23:36,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:23:36,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327344517] [2022-11-20 20:23:36,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327344517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:23:36,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:23:36,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:23:36,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717372449] [2022-11-20 20:23:36,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:23:36,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:23:36,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:23:36,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:23:36,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:23:36,135 INFO L87 Difference]: Start difference. First operand 260 states and 637 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) [2022-11-20 20:23:36,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:23:36,218 INFO L93 Difference]: Finished difference Result 218 states and 506 transitions. [2022-11-20 20:23:36,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:23:36,218 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 [2022-11-20 20:23:36,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:23:36,219 INFO L225 Difference]: With dead ends: 218 [2022-11-20 20:23:36,219 INFO L226 Difference]: Without dead ends: 176 [2022-11-20 20:23:36,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:23:36,220 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 17 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:23:36,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:23:36,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-20 20:23:36,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-11-20 20:23:36,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 2.3485714285714288) internal successors, (411), 175 states have internal predecessors, (411), 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) [2022-11-20 20:23:36,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 411 transitions. [2022-11-20 20:23:36,226 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 411 transitions. Word has length 8 [2022-11-20 20:23:36,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:23:36,226 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 411 transitions. [2022-11-20 20:23:36,228 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) [2022-11-20 20:23:36,229 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 411 transitions. [2022-11-20 20:23:36,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 20:23:36,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:23:36,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:23:36,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:23:36,232 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:23:36,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:23:36,233 INFO L85 PathProgramCache]: Analyzing trace with hash -84204918, now seen corresponding path program 1 times [2022-11-20 20:23:36,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:23:36,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772754504] [2022-11-20 20:23:36,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:23:36,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:23:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:23:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:23:37,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:23:37,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772754504] [2022-11-20 20:23:37,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772754504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:23:37,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:23:37,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:23:37,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919848857] [2022-11-20 20:23:37,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:23:37,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:23:37,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:23:37,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:23:37,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:23:37,513 INFO L87 Difference]: Start difference. First operand 176 states and 411 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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) [2022-11-20 20:23:37,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:23:37,758 INFO L93 Difference]: Finished difference Result 192 states and 433 transitions. [2022-11-20 20:23:37,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:23:37,759 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 12 [2022-11-20 20:23:37,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:23:37,760 INFO L225 Difference]: With dead ends: 192 [2022-11-20 20:23:37,760 INFO L226 Difference]: Without dead ends: 174 [2022-11-20 20:23:37,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:23:37,761 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 22 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:23:37,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 11 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:23:37,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-20 20:23:37,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-11-20 20:23:37,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.341040462427746) internal successors, (405), 173 states have internal predecessors, (405), 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) [2022-11-20 20:23:37,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 405 transitions. [2022-11-20 20:23:37,766 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 405 transitions. Word has length 12 [2022-11-20 20:23:37,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:23:37,767 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 405 transitions. [2022-11-20 20:23:37,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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) [2022-11-20 20:23:37,767 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 405 transitions. [2022-11-20 20:23:37,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 20:23:37,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:23:37,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:23:37,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:23:37,769 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:23:37,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:23:37,770 INFO L85 PathProgramCache]: Analyzing trace with hash -557385992, now seen corresponding path program 1 times [2022-11-20 20:23:37,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:23:37,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441911799] [2022-11-20 20:23:37,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:23:37,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:23:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:23:38,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:23:38,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:23:38,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441911799] [2022-11-20 20:23:38,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441911799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:23:38,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:23:38,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:23:38,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189433719] [2022-11-20 20:23:38,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:23:38,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:23:38,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:23:38,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:23:38,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:23:38,272 INFO L87 Difference]: Start difference. First operand 174 states and 405 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:23:38,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:23:38,377 INFO L93 Difference]: Finished difference Result 154 states and 345 transitions. [2022-11-20 20:23:38,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:23:38,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 20:23:38,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:23:38,378 INFO L225 Difference]: With dead ends: 154 [2022-11-20 20:23:38,378 INFO L226 Difference]: Without dead ends: 154 [2022-11-20 20:23:38,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:23:38,380 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 8 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:23:38,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:23:38,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-20 20:23:38,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2022-11-20 20:23:38,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.2549019607843137) internal successors, (345), 153 states have internal predecessors, (345), 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) [2022-11-20 20:23:38,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 345 transitions. [2022-11-20 20:23:38,385 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 345 transitions. Word has length 13 [2022-11-20 20:23:38,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:23:38,385 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 345 transitions. [2022-11-20 20:23:38,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:23:38,385 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 345 transitions. [2022-11-20 20:23:38,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 20:23:38,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:23:38,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:23:38,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 20:23:38,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:23:38,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:23:38,387 INFO L85 PathProgramCache]: Analyzing trace with hash -623937608, now seen corresponding path program 2 times [2022-11-20 20:23:38,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:23:38,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648104666] [2022-11-20 20:23:38,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:23:38,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:23:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:23:38,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:23:38,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:23:38,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648104666] [2022-11-20 20:23:38,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648104666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:23:38,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:23:38,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:23:38,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646038298] [2022-11-20 20:23:38,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:23:38,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:23:38,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:23:38,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:23:38,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:23:38,629 INFO L87 Difference]: Start difference. First operand 154 states and 345 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:23:38,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:23:38,694 INFO L93 Difference]: Finished difference Result 96 states and 171 transitions. [2022-11-20 20:23:38,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:23:38,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 20:23:38,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:23:38,696 INFO L225 Difference]: With dead ends: 96 [2022-11-20 20:23:38,696 INFO L226 Difference]: Without dead ends: 96 [2022-11-20 20:23:38,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:23:38,697 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:23:38,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:23:38,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-20 20:23:38,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2022-11-20 20:23:38,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.8) internal successors, (171), 95 states have internal predecessors, (171), 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) [2022-11-20 20:23:38,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 171 transitions. [2022-11-20 20:23:38,703 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 171 transitions. Word has length 13 [2022-11-20 20:23:38,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:23:38,703 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 171 transitions. [2022-11-20 20:23:38,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:23:38,703 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 171 transitions. [2022-11-20 20:23:38,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 20:23:38,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:23:38,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:23:38,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 20:23:38,706 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:23:38,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:23:38,706 INFO L85 PathProgramCache]: Analyzing trace with hash 2033927993, now seen corresponding path program 1 times [2022-11-20 20:23:38,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:23:38,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592047955] [2022-11-20 20:23:38,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:23:38,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:23:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:23:41,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:23:41,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:23:41,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592047955] [2022-11-20 20:23:41,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592047955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:23:41,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:23:41,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:23:41,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046286609] [2022-11-20 20:23:41,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:23:41,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:23:41,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:23:41,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:23:41,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:23:41,329 INFO L87 Difference]: Start difference. First operand 96 states and 171 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2022-11-20 20:23:41,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:23:41,747 INFO L93 Difference]: Finished difference Result 101 states and 175 transitions. [2022-11-20 20:23:41,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:23:41,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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 [2022-11-20 20:23:41,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:23:41,749 INFO L225 Difference]: With dead ends: 101 [2022-11-20 20:23:41,749 INFO L226 Difference]: Without dead ends: 95 [2022-11-20 20:23:41,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:23:41,750 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 14 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:23:41,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 13 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:23:41,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-20 20:23:41,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2022-11-20 20:23:41,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.7956989247311828) internal successors, (167), 93 states have internal predecessors, (167), 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) [2022-11-20 20:23:41,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 167 transitions. [2022-11-20 20:23:41,753 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 167 transitions. Word has length 14 [2022-11-20 20:23:41,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:23:41,753 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 167 transitions. [2022-11-20 20:23:41,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2022-11-20 20:23:41,753 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 167 transitions. [2022-11-20 20:23:41,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 20:23:41,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:23:41,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:23:41,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 20:23:41,754 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:23:41,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:23:41,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1721518041, now seen corresponding path program 1 times [2022-11-20 20:23:41,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:23:41,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359084264] [2022-11-20 20:23:41,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:23:41,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:23:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:23:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:23:44,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:23:44,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359084264] [2022-11-20 20:23:44,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359084264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:23:44,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:23:44,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:23:44,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921034773] [2022-11-20 20:23:44,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:23:44,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:23:44,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:23:44,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:23:44,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:23:44,008 INFO L87 Difference]: Start difference. First operand 94 states and 167 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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) [2022-11-20 20:23:44,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:23:44,425 INFO L93 Difference]: Finished difference Result 112 states and 196 transitions. [2022-11-20 20:23:44,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 20:23:44,426 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 15 [2022-11-20 20:23:44,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:23:44,427 INFO L225 Difference]: With dead ends: 112 [2022-11-20 20:23:44,427 INFO L226 Difference]: Without dead ends: 107 [2022-11-20 20:23:44,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:23:44,428 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 35 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:23:44,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 18 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:23:44,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-20 20:23:44,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 101. [2022-11-20 20:23:44,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.8) internal successors, (180), 100 states have internal predecessors, (180), 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) [2022-11-20 20:23:44,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 180 transitions. [2022-11-20 20:23:44,435 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 180 transitions. Word has length 15 [2022-11-20 20:23:44,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:23:44,435 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 180 transitions. [2022-11-20 20:23:44,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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) [2022-11-20 20:23:44,435 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 180 transitions. [2022-11-20 20:23:44,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 20:23:44,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:23:44,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:23:44,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 20:23:44,436 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:23:44,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:23:44,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1034813769, now seen corresponding path program 2 times [2022-11-20 20:23:44,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:23:44,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886443821] [2022-11-20 20:23:44,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:23:44,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:23:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:23:46,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:23:46,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:23:46,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886443821] [2022-11-20 20:23:46,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886443821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:23:46,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:23:46,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:23:46,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995456134] [2022-11-20 20:23:46,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:23:46,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:23:46,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:23:46,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:23:46,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:23:46,819 INFO L87 Difference]: Start difference. First operand 101 states and 180 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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) [2022-11-20 20:23:47,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:23:47,395 INFO L93 Difference]: Finished difference Result 155 states and 271 transitions. [2022-11-20 20:23:47,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:23:47,395 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 15 [2022-11-20 20:23:47,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:23:47,396 INFO L225 Difference]: With dead ends: 155 [2022-11-20 20:23:47,396 INFO L226 Difference]: Without dead ends: 123 [2022-11-20 20:23:47,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:23:47,397 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 43 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:23:47,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 19 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:23:47,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-20 20:23:47,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 108. [2022-11-20 20:23:47,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.7476635514018692) internal successors, (187), 107 states have internal predecessors, (187), 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) [2022-11-20 20:23:47,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 187 transitions. [2022-11-20 20:23:47,401 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 187 transitions. Word has length 15 [2022-11-20 20:23:47,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:23:47,401 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 187 transitions. [2022-11-20 20:23:47,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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) [2022-11-20 20:23:47,401 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 187 transitions. [2022-11-20 20:23:47,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 20:23:47,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:23:47,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:23:47,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 20:23:47,402 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:23:47,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:23:47,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1676092807, now seen corresponding path program 3 times [2022-11-20 20:23:47,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:23:47,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502822056] [2022-11-20 20:23:47,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:23:47,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:23:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:23:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:23:49,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:23:49,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502822056] [2022-11-20 20:23:49,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502822056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:23:49,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:23:49,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:23:49,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173353170] [2022-11-20 20:23:49,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:23:49,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 20:23:49,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:23:49,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 20:23:49,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:23:49,387 INFO L87 Difference]: Start difference. First operand 108 states and 187 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 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) [2022-11-20 20:23:50,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:23:50,887 INFO L93 Difference]: Finished difference Result 168 states and 285 transitions. [2022-11-20 20:23:50,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:23:50,888 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 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 15 [2022-11-20 20:23:50,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:23:50,889 INFO L225 Difference]: With dead ends: 168 [2022-11-20 20:23:50,889 INFO L226 Difference]: Without dead ends: 140 [2022-11-20 20:23:50,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:23:50,890 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 31 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:23:50,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 33 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 20:23:50,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-20 20:23:50,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 108. [2022-11-20 20:23:50,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.7476635514018692) internal successors, (187), 107 states have internal predecessors, (187), 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) [2022-11-20 20:23:50,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 187 transitions. [2022-11-20 20:23:50,894 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 187 transitions. Word has length 15 [2022-11-20 20:23:50,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:23:50,894 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 187 transitions. [2022-11-20 20:23:50,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 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) [2022-11-20 20:23:50,895 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 187 transitions. [2022-11-20 20:23:50,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 20:23:50,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:23:50,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:23:50,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 20:23:50,896 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:23:50,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:23:50,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1929474069, now seen corresponding path program 4 times [2022-11-20 20:23:50,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:23:50,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628083743] [2022-11-20 20:23:50,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:23:50,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:23:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:23:51,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:23:51,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:23:51,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628083743] [2022-11-20 20:23:51,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628083743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:23:51,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:23:51,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:23:51,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27099462] [2022-11-20 20:23:51,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:23:51,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:23:51,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:23:51,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:23:51,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:23:51,101 INFO L87 Difference]: Start difference. First operand 108 states and 187 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-11-20 20:23:51,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:23:51,176 INFO L93 Difference]: Finished difference Result 70 states and 112 transitions. [2022-11-20 20:23:51,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:23:51,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2022-11-20 20:23:51,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:23:51,177 INFO L225 Difference]: With dead ends: 70 [2022-11-20 20:23:51,178 INFO L226 Difference]: Without dead ends: 35 [2022-11-20 20:23:51,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:23:51,178 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 23 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:23:51,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:23:51,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-20 20:23:51,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-20 20:23:51,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 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) [2022-11-20 20:23:51,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2022-11-20 20:23:51,180 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 48 transitions. Word has length 15 [2022-11-20 20:23:51,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:23:51,180 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 48 transitions. [2022-11-20 20:23:51,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-11-20 20:23:51,181 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 48 transitions. [2022-11-20 20:23:51,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 20:23:51,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:23:51,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:23:51,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 20:23:51,181 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-20 20:23:51,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:23:51,182 INFO L85 PathProgramCache]: Analyzing trace with hash -405161276, now seen corresponding path program 1 times [2022-11-20 20:23:51,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:23:51,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239223294] [2022-11-20 20:23:51,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:23:51,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:23:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:23:51,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:23:51,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:23:51,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239223294] [2022-11-20 20:23:51,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239223294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:23:51,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:23:51,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:23:51,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284247761] [2022-11-20 20:23:51,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:23:51,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:23:51,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:23:51,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:23:51,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:23:51,468 INFO L87 Difference]: Start difference. First operand 35 states and 48 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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) [2022-11-20 20:23:51,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:23:51,570 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2022-11-20 20:23:51,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:23:51,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2022-11-20 20:23:51,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:23:51,571 INFO L225 Difference]: With dead ends: 34 [2022-11-20 20:23:51,571 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 20:23:51,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:23:51,572 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:23:51,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:23:51,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 20:23:51,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 20:23:51,573 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) [2022-11-20 20:23:51,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 20:23:51,573 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2022-11-20 20:23:51,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:23:51,573 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 20:23:51,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 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) [2022-11-20 20:23:51,573 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 20:23:51,573 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 20:23:51,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (9 of 10 remaining) [2022-11-20 20:23:51,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2022-11-20 20:23:51,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2022-11-20 20:23:51,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2022-11-20 20:23:51,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2022-11-20 20:23:51,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2022-11-20 20:23:51,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2022-11-20 20:23:51,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 10 remaining) [2022-11-20 20:23:51,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2022-11-20 20:23:51,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2022-11-20 20:23:51,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 20:23:51,587 INFO L444 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:23:51,592 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 20:23:51,592 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:23:51,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:23:51 BasicIcfg [2022-11-20 20:23:51,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:23:51,597 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:23:51,597 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:23:51,598 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:23:51,598 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:23:28" (3/4) ... [2022-11-20 20:23:51,601 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 20:23:51,607 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-20 20:23:51,607 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-20 20:23:51,614 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2022-11-20 20:23:51,614 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-20 20:23:51,615 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 20:23:51,615 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 20:23:51,667 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd5bc1-804e-475b-9ae3-03d2f1a796fc/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:23:51,667 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:23:51,668 INFO L158 Benchmark]: Toolchain (without parser) took 25254.59ms. Allocated memory was 148.9MB in the beginning and 494.9MB in the end (delta: 346.0MB). Free memory was 115.6MB in the beginning and 432.0MB in the end (delta: -316.4MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2022-11-20 20:23:51,668 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 148.9MB. Free memory is still 91.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:23:51,668 INFO L158 Benchmark]: CACSL2BoogieTranslator took 649.79ms. Allocated memory is still 148.9MB. Free memory was 115.6MB in the beginning and 90.0MB in the end (delta: 25.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-20 20:23:51,669 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.30ms. Allocated memory is still 148.9MB. Free memory was 90.0MB in the beginning and 87.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 20:23:51,669 INFO L158 Benchmark]: Boogie Preprocessor took 46.60ms. Allocated memory is still 148.9MB. Free memory was 87.0MB in the beginning and 84.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:23:51,670 INFO L158 Benchmark]: RCFGBuilder took 1105.87ms. Allocated memory was 148.9MB in the beginning and 184.5MB in the end (delta: 35.7MB). Free memory was 84.9MB in the beginning and 138.8MB in the end (delta: -53.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-20 20:23:51,671 INFO L158 Benchmark]: TraceAbstraction took 23280.63ms. Allocated memory was 184.5MB in the beginning and 494.9MB in the end (delta: 310.4MB). Free memory was 137.9MB in the beginning and 435.1MB in the end (delta: -297.2MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2022-11-20 20:23:51,671 INFO L158 Benchmark]: Witness Printer took 69.80ms. Allocated memory is still 494.9MB. Free memory was 435.1MB in the beginning and 432.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:23:51,679 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 148.9MB. Free memory is still 91.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 649.79ms. Allocated memory is still 148.9MB. Free memory was 115.6MB in the beginning and 90.0MB in the end (delta: 25.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.30ms. Allocated memory is still 148.9MB. Free memory was 90.0MB in the beginning and 87.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.60ms. Allocated memory is still 148.9MB. Free memory was 87.0MB in the beginning and 84.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1105.87ms. Allocated memory was 148.9MB in the beginning and 184.5MB in the end (delta: 35.7MB). Free memory was 84.9MB in the beginning and 138.8MB in the end (delta: -53.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * TraceAbstraction took 23280.63ms. Allocated memory was 184.5MB in the beginning and 494.9MB in the end (delta: 310.4MB). Free memory was 137.9MB in the beginning and 435.1MB in the end (delta: -297.2MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * Witness Printer took 69.80ms. Allocated memory is still 494.9MB. Free memory was 435.1MB in the beginning and 432.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 112 PlacesBefore, 35 PlacesAfterwards, 107 TransitionsBefore, 29 TransitionsAfterwards, 1528 CoEnabledTransitionPairs, 7 FixpointIterations, 48 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 107 TotalNumberOfCompositions, 5106 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1717, independent: 1528, independent conditional: 0, independent unconditional: 1528, dependent: 189, dependent conditional: 0, dependent unconditional: 189, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 965, independent: 923, independent conditional: 0, independent unconditional: 923, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 965, independent: 904, independent conditional: 0, independent unconditional: 904, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 61, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 379, independent: 24, independent conditional: 0, independent unconditional: 24, dependent: 355, dependent conditional: 0, dependent unconditional: 355, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1717, independent: 605, independent conditional: 0, independent unconditional: 605, dependent: 147, dependent conditional: 0, dependent unconditional: 147, unknown: 965, unknown conditional: 0, unknown unconditional: 965] , Statistics on independence cache: Total cache size (in pairs): 82, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, 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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 833]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 128 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 23.1s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 259 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 259 mSDsluCounter, 111 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 86 mSDsCounter, 122 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1421 IncrementalHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 122 mSolverCounterUnsat, 25 mSDtfsCounter, 1421 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=334occurred in iteration=0, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 72 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 12.6s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 2062 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 20:23:51,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11fd5bc1-804e-475b-9ae3-03d2f1a796fc/bin/utaipan-6cKwYrpEi9/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