./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/test-hard1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b 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_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/test-hard1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS --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 782f6af95152c43f9bba17dfd450d57dc3073723e35aa3f98da1f0b96067f4d1 --- 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-8393723 [2022-11-19 07:00:19,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:00:19,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:00:19,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:00:19,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:00:19,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:00:19,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:00:19,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:00:19,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:00:19,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:00:19,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:00:19,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:00:19,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:00:19,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:00:19,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:00:19,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:00:19,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:00:19,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:00:19,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:00:19,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:00:19,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:00:19,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:00:19,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:00:19,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:00:19,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:00:19,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:00:19,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:00:19,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:00:19,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:00:19,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:00:19,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:00:19,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:00:19,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:00:19,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:00:19,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:00:19,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:00:19,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:00:19,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:00:19,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:00:19,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:00:19,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:00:19,377 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 07:00:19,405 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:00:19,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:00:19,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:00:19,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:00:19,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:00:19,407 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:00:19,407 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:00:19,407 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:00:19,407 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:00:19,408 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:00:19,409 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:00:19,409 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:00:19,409 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:00:19,409 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:00:19,409 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:00:19,410 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:00:19,410 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:00:19,410 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:00:19,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 07:00:19,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 07:00:19,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:00:19,411 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:00:19,412 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:00:19,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:00:19,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:00:19,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:00:19,414 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 07:00:19,414 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 07:00:19,414 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 07:00:19,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:00:19,415 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:00:19,415 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:00:19,415 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:00:19,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:00:19,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:00:19,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:00:19,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:00:19,416 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:00:19,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:00:19,417 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:00:19,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:00:19,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:00:19,418 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_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 782f6af95152c43f9bba17dfd450d57dc3073723e35aa3f98da1f0b96067f4d1 [2022-11-19 07:00:19,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:00:19,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:00:19,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:00:19,716 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:00:19,716 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:00:19,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/weaver/test-hard1.wvr.c [2022-11-19 07:00:19,778 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/data/fe5645fe3/eb44f57968e8414ea4fd726203e268b6/FLAG0be772474 [2022-11-19 07:00:20,296 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:00:20,296 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/sv-benchmarks/c/weaver/test-hard1.wvr.c [2022-11-19 07:00:20,304 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/data/fe5645fe3/eb44f57968e8414ea4fd726203e268b6/FLAG0be772474 [2022-11-19 07:00:20,667 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/data/fe5645fe3/eb44f57968e8414ea4fd726203e268b6 [2022-11-19 07:00:20,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:00:20,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:00:20,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:00:20,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:00:20,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:00:20,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:00:20" (1/1) ... [2022-11-19 07:00:20,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47b6022a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:20, skipping insertion in model container [2022-11-19 07:00:20,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:00:20" (1/1) ... [2022-11-19 07:00:20,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:00:20,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:00:20,935 WARN L234 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_2c429995-ed5a-4514-8c75-45f930c1df26/sv-benchmarks/c/weaver/test-hard1.wvr.c[3373,3386] [2022-11-19 07:00:20,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:00:20,948 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:00:20,974 WARN L234 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_2c429995-ed5a-4514-8c75-45f930c1df26/sv-benchmarks/c/weaver/test-hard1.wvr.c[3373,3386] [2022-11-19 07:00:20,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:00:20,989 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:00:20,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:20 WrapperNode [2022-11-19 07:00:20,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:00:20,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:00:20,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:00:20,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:00:20,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:20" (1/1) ... [2022-11-19 07:00:21,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:20" (1/1) ... [2022-11-19 07:00:21,055 INFO L138 Inliner]: procedures = 24, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 93 [2022-11-19 07:00:21,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:00:21,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:00:21,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:00:21,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:00:21,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:20" (1/1) ... [2022-11-19 07:00:21,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:20" (1/1) ... [2022-11-19 07:00:21,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:20" (1/1) ... [2022-11-19 07:00:21,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:20" (1/1) ... [2022-11-19 07:00:21,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:20" (1/1) ... [2022-11-19 07:00:21,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:20" (1/1) ... [2022-11-19 07:00:21,111 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:20" (1/1) ... [2022-11-19 07:00:21,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:20" (1/1) ... [2022-11-19 07:00:21,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:00:21,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:00:21,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:00:21,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:00:21,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:20" (1/1) ... [2022-11-19 07:00:21,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:00:21,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:00:21,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:00:21,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:00:21,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:00:21,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-19 07:00:21,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-19 07:00:21,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-19 07:00:21,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-19 07:00:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-19 07:00:21,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-19 07:00:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-19 07:00:21,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-19 07:00:21,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:00:21,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:00:21,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:00:21,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-19 07:00:21,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-19 07:00:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:00:21,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:00:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:00:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:00:21,210 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 07:00:21,341 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:00:21,357 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:00:21,946 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:00:22,041 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:00:22,041 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-19 07:00:22,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:00:22 BoogieIcfgContainer [2022-11-19 07:00:22,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:00:22,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:00:22,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:00:22,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:00:22,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:00:20" (1/3) ... [2022-11-19 07:00:22,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3facb42c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:00:22, skipping insertion in model container [2022-11-19 07:00:22,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:20" (2/3) ... [2022-11-19 07:00:22,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3facb42c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:00:22, skipping insertion in model container [2022-11-19 07:00:22,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:00:22" (3/3) ... [2022-11-19 07:00:22,066 INFO L112 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2022-11-19 07:00:22,091 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:00:22,091 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-19 07:00:22,092 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 07:00:22,247 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-19 07:00:22,331 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:00:22,346 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 155 transitions, 342 flow [2022-11-19 07:00:22,350 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 155 transitions, 342 flow [2022-11-19 07:00:22,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 155 transitions, 342 flow [2022-11-19 07:00:22,437 INFO L130 PetriNetUnfolder]: 10/151 cut-off events. [2022-11-19 07:00:22,438 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-19 07:00:22,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 151 events. 10/151 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 121 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-11-19 07:00:22,450 INFO L119 LiptonReduction]: Number of co-enabled transitions 2336 [2022-11-19 07:00:30,457 INFO L134 LiptonReduction]: Checked pairs total: 4822 [2022-11-19 07:00:30,458 INFO L136 LiptonReduction]: Total number of compositions: 141 [2022-11-19 07:00:30,474 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 64 places, 55 transitions, 142 flow [2022-11-19 07:00:30,667 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1703 states, 1685 states have (on average 4.372106824925816) internal successors, (7367), 1702 states have internal predecessors, (7367), 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) [2022-11-19 07:00:30,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:00:30,697 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;@492410c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:00:30,698 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-19 07:00:30,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 1703 states, 1685 states have (on average 4.372106824925816) internal successors, (7367), 1702 states have internal predecessors, (7367), 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) [2022-11-19 07:00:30,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-19 07:00:30,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:30,711 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-19 07:00:30,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:30,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:30,717 INFO L85 PathProgramCache]: Analyzing trace with hash 610, now seen corresponding path program 1 times [2022-11-19 07:00:30,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:30,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589854092] [2022-11-19 07:00:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:30,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:30,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:30,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:30,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589854092] [2022-11-19 07:00:30,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589854092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:30,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:30,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-19 07:00:30,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553691128] [2022-11-19 07:00:30,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:30,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:00:30,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:30,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:00:30,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:00:30,898 INFO L87 Difference]: Start difference. First operand has 1703 states, 1685 states have (on average 4.372106824925816) internal successors, (7367), 1702 states have internal predecessors, (7367), 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) [2022-11-19 07:00:31,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:31,065 INFO L93 Difference]: Finished difference Result 1700 states and 7364 transitions. [2022-11-19 07:00:31,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:00:31,068 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 [2022-11-19 07:00:31,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:31,103 INFO L225 Difference]: With dead ends: 1700 [2022-11-19 07:00:31,104 INFO L226 Difference]: Without dead ends: 1700 [2022-11-19 07:00:31,105 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 [2022-11-19 07:00:31,109 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:31,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:00:31,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2022-11-19 07:00:31,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1700. [2022-11-19 07:00:31,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1685 states have (on average 4.370326409495549) internal successors, (7364), 1699 states have internal predecessors, (7364), 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) [2022-11-19 07:00:31,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 7364 transitions. [2022-11-19 07:00:31,324 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 7364 transitions. Word has length 1 [2022-11-19 07:00:31,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:31,324 INFO L495 AbstractCegarLoop]: Abstraction has 1700 states and 7364 transitions. [2022-11-19 07:00:31,326 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) [2022-11-19 07:00:31,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 7364 transitions. [2022-11-19 07:00:31,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 07:00:31,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:31,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 07:00:31,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:00:31,329 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:31,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:31,330 INFO L85 PathProgramCache]: Analyzing trace with hash 599214, now seen corresponding path program 1 times [2022-11-19 07:00:31,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:31,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972727803] [2022-11-19 07:00:31,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:31,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:31,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:31,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:31,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972727803] [2022-11-19 07:00:31,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972727803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:31,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:31,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:00:31,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287640100] [2022-11-19 07:00:31,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:31,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:31,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:31,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:31,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:31,951 INFO L87 Difference]: Start difference. First operand 1700 states and 7364 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:32,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:32,072 INFO L93 Difference]: Finished difference Result 1632 states and 7100 transitions. [2022-11-19 07:00:32,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:32,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-19 07:00:32,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:32,088 INFO L225 Difference]: With dead ends: 1632 [2022-11-19 07:00:32,088 INFO L226 Difference]: Without dead ends: 1632 [2022-11-19 07:00:32,090 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 [2022-11-19 07:00:32,092 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:32,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 8 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:00:32,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2022-11-19 07:00:32,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1632. [2022-11-19 07:00:32,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1619 states have (on average 4.385423100679431) internal successors, (7100), 1631 states have internal predecessors, (7100), 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) [2022-11-19 07:00:32,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 7100 transitions. [2022-11-19 07:00:32,196 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 7100 transitions. Word has length 3 [2022-11-19 07:00:32,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:32,196 INFO L495 AbstractCegarLoop]: Abstraction has 1632 states and 7100 transitions. [2022-11-19 07:00:32,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:32,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 7100 transitions. [2022-11-19 07:00:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 07:00:32,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:32,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 07:00:32,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:00:32,198 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:32,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:32,199 INFO L85 PathProgramCache]: Analyzing trace with hash 599215, now seen corresponding path program 1 times [2022-11-19 07:00:32,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:32,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525834202] [2022-11-19 07:00:32,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:32,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:32,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:32,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525834202] [2022-11-19 07:00:32,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525834202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:32,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:32,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:00:32,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649749946] [2022-11-19 07:00:32,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:32,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:32,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:32,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:32,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:32,357 INFO L87 Difference]: Start difference. First operand 1632 states and 7100 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:32,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:32,459 INFO L93 Difference]: Finished difference Result 1564 states and 6836 transitions. [2022-11-19 07:00:32,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:32,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-19 07:00:32,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:32,477 INFO L225 Difference]: With dead ends: 1564 [2022-11-19 07:00:32,477 INFO L226 Difference]: Without dead ends: 1564 [2022-11-19 07:00:32,479 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 [2022-11-19 07:00:32,482 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:32,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 8 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:00:32,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2022-11-19 07:00:32,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1564. [2022-11-19 07:00:32,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1553 states have (on average 4.401802962009015) internal successors, (6836), 1563 states have internal predecessors, (6836), 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) [2022-11-19 07:00:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 6836 transitions. [2022-11-19 07:00:32,574 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 6836 transitions. Word has length 3 [2022-11-19 07:00:32,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:32,575 INFO L495 AbstractCegarLoop]: Abstraction has 1564 states and 6836 transitions. [2022-11-19 07:00:32,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:32,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 6836 transitions. [2022-11-19 07:00:32,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:00:32,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:32,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:00:32,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:00:32,576 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:32,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:32,577 INFO L85 PathProgramCache]: Analyzing trace with hash 575860428, now seen corresponding path program 1 times [2022-11-19 07:00:32,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:32,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482378120] [2022-11-19 07:00:32,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:32,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:32,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:32,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482378120] [2022-11-19 07:00:32,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482378120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:32,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:32,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:00:32,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443916343] [2022-11-19 07:00:32,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:32,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:32,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:32,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:32,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:32,712 INFO L87 Difference]: Start difference. First operand 1564 states and 6836 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:32,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:32,798 INFO L93 Difference]: Finished difference Result 1532 states and 6740 transitions. [2022-11-19 07:00:32,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:32,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 07:00:32,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:32,814 INFO L225 Difference]: With dead ends: 1532 [2022-11-19 07:00:32,814 INFO L226 Difference]: Without dead ends: 1532 [2022-11-19 07:00:32,819 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 [2022-11-19 07:00:32,822 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:32,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 8 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:00:32,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2022-11-19 07:00:32,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1532. [2022-11-19 07:00:32,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1523 states have (on average 4.425476034143139) internal successors, (6740), 1531 states have internal predecessors, (6740), 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) [2022-11-19 07:00:32,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 6740 transitions. [2022-11-19 07:00:32,917 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 6740 transitions. Word has length 5 [2022-11-19 07:00:32,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:32,919 INFO L495 AbstractCegarLoop]: Abstraction has 1532 states and 6740 transitions. [2022-11-19 07:00:32,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:32,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 6740 transitions. [2022-11-19 07:00:32,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:00:32,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:32,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:00:32,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:00:32,926 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:32,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:32,927 INFO L85 PathProgramCache]: Analyzing trace with hash 575860429, now seen corresponding path program 1 times [2022-11-19 07:00:32,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:32,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560045730] [2022-11-19 07:00:32,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:32,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:33,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:33,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:33,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560045730] [2022-11-19 07:00:33,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560045730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:33,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:33,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:00:33,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438783560] [2022-11-19 07:00:33,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:33,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:33,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:33,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:33,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:33,109 INFO L87 Difference]: Start difference. First operand 1532 states and 6740 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:33,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:33,173 INFO L93 Difference]: Finished difference Result 1500 states and 6644 transitions. [2022-11-19 07:00:33,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:33,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 07:00:33,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:33,186 INFO L225 Difference]: With dead ends: 1500 [2022-11-19 07:00:33,186 INFO L226 Difference]: Without dead ends: 1500 [2022-11-19 07:00:33,186 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 [2022-11-19 07:00:33,187 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:33,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 8 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:00:33,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-19 07:00:33,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1500. [2022-11-19 07:00:33,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1493 states have (on average 4.4501004688546555) internal successors, (6644), 1499 states have internal predecessors, (6644), 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) [2022-11-19 07:00:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 6644 transitions. [2022-11-19 07:00:33,253 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 6644 transitions. Word has length 5 [2022-11-19 07:00:33,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:33,254 INFO L495 AbstractCegarLoop]: Abstraction has 1500 states and 6644 transitions. [2022-11-19 07:00:33,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:33,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 6644 transitions. [2022-11-19 07:00:33,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:00:33,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:33,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:33,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:00:33,255 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:33,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:33,256 INFO L85 PathProgramCache]: Analyzing trace with hash -648896797, now seen corresponding path program 1 times [2022-11-19 07:00:33,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:33,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611367453] [2022-11-19 07:00:33,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:33,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:33,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:33,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:33,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611367453] [2022-11-19 07:00:33,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611367453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:33,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:33,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:00:33,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763784324] [2022-11-19 07:00:33,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:33,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:33,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:33,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:33,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:33,364 INFO L87 Difference]: Start difference. First operand 1500 states and 6644 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-19 07:00:33,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:33,458 INFO L93 Difference]: Finished difference Result 1432 states and 6380 transitions. [2022-11-19 07:00:33,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:33,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-11-19 07:00:33,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:33,470 INFO L225 Difference]: With dead ends: 1432 [2022-11-19 07:00:33,470 INFO L226 Difference]: Without dead ends: 1432 [2022-11-19 07:00:33,471 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 [2022-11-19 07:00:33,474 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:33,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 8 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:00:33,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2022-11-19 07:00:33,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1432. [2022-11-19 07:00:33,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1427 states have (on average 4.4709180098107915) internal successors, (6380), 1431 states have internal predecessors, (6380), 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) [2022-11-19 07:00:33,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 6380 transitions. [2022-11-19 07:00:33,535 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 6380 transitions. Word has length 7 [2022-11-19 07:00:33,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:33,535 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 6380 transitions. [2022-11-19 07:00:33,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-19 07:00:33,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 6380 transitions. [2022-11-19 07:00:33,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:00:33,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:33,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:33,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:00:33,538 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:33,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:33,538 INFO L85 PathProgramCache]: Analyzing trace with hash -648896796, now seen corresponding path program 1 times [2022-11-19 07:00:33,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:33,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43763700] [2022-11-19 07:00:33,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:33,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:33,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:33,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43763700] [2022-11-19 07:00:33,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43763700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:33,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:33,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:00:33,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813971027] [2022-11-19 07:00:33,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:33,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:33,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:33,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:33,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:33,622 INFO L87 Difference]: Start difference. First operand 1432 states and 6380 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-19 07:00:33,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:33,683 INFO L93 Difference]: Finished difference Result 1364 states and 6116 transitions. [2022-11-19 07:00:33,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:33,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-11-19 07:00:33,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:33,704 INFO L225 Difference]: With dead ends: 1364 [2022-11-19 07:00:33,705 INFO L226 Difference]: Without dead ends: 1364 [2022-11-19 07:00:33,705 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 [2022-11-19 07:00:33,706 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:33,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 8 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:00:33,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-11-19 07:00:33,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1364. [2022-11-19 07:00:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1361 states have (on average 4.493754592211609) internal successors, (6116), 1363 states have internal predecessors, (6116), 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) [2022-11-19 07:00:33,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 6116 transitions. [2022-11-19 07:00:33,793 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 6116 transitions. Word has length 7 [2022-11-19 07:00:33,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:33,793 INFO L495 AbstractCegarLoop]: Abstraction has 1364 states and 6116 transitions. [2022-11-19 07:00:33,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-19 07:00:33,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 6116 transitions. [2022-11-19 07:00:33,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 07:00:33,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:33,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:33,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:00:33,797 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:33,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:33,798 INFO L85 PathProgramCache]: Analyzing trace with hash -819548192, now seen corresponding path program 1 times [2022-11-19 07:00:33,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:33,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792528032] [2022-11-19 07:00:33,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:33,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:34,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:34,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:34,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792528032] [2022-11-19 07:00:34,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792528032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:34,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:34,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:00:34,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984252840] [2022-11-19 07:00:34,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:34,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:00:34,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:34,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:00:34,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:00:34,014 INFO L87 Difference]: Start difference. First operand 1364 states and 6116 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-19 07:00:34,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:34,090 INFO L93 Difference]: Finished difference Result 1108 states and 4836 transitions. [2022-11-19 07:00:34,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:34,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2022-11-19 07:00:34,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:34,110 INFO L225 Difference]: With dead ends: 1108 [2022-11-19 07:00:34,110 INFO L226 Difference]: Without dead ends: 1108 [2022-11-19 07:00:34,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:00:34,111 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 94 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:34,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 8 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:00:34,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2022-11-19 07:00:34,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1108. [2022-11-19 07:00:34,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1106 states have (on average 4.37251356238698) internal successors, (4836), 1107 states have internal predecessors, (4836), 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) [2022-11-19 07:00:34,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 4836 transitions. [2022-11-19 07:00:34,190 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 4836 transitions. Word has length 9 [2022-11-19 07:00:34,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:34,191 INFO L495 AbstractCegarLoop]: Abstraction has 1108 states and 4836 transitions. [2022-11-19 07:00:34,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-19 07:00:34,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 4836 transitions. [2022-11-19 07:00:34,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 07:00:34,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:34,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:34,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:00:34,201 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:34,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash -819548191, now seen corresponding path program 1 times [2022-11-19 07:00:34,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:34,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090829614] [2022-11-19 07:00:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:34,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:34,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:34,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090829614] [2022-11-19 07:00:34,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090829614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:34,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:34,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:00:34,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127423156] [2022-11-19 07:00:34,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:34,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:34,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:34,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:34,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:34,268 INFO L87 Difference]: Start difference. First operand 1108 states and 4836 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-19 07:00:34,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:34,327 INFO L93 Difference]: Finished difference Result 852 states and 3556 transitions. [2022-11-19 07:00:34,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:34,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-19 07:00:34,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:34,334 INFO L225 Difference]: With dead ends: 852 [2022-11-19 07:00:34,335 INFO L226 Difference]: Without dead ends: 852 [2022-11-19 07:00:34,335 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 [2022-11-19 07:00:34,337 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:34,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 8 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:00:34,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2022-11-19 07:00:34,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 852. [2022-11-19 07:00:34,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 4.1786133960047005) internal successors, (3556), 851 states have internal predecessors, (3556), 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) [2022-11-19 07:00:34,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 3556 transitions. [2022-11-19 07:00:34,382 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 3556 transitions. Word has length 9 [2022-11-19 07:00:34,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:34,383 INFO L495 AbstractCegarLoop]: Abstraction has 852 states and 3556 transitions. [2022-11-19 07:00:34,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-19 07:00:34,383 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 3556 transitions. [2022-11-19 07:00:34,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 07:00:34,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:34,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:34,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:00:34,388 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:34,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:34,389 INFO L85 PathProgramCache]: Analyzing trace with hash 817914195, now seen corresponding path program 1 times [2022-11-19 07:00:34,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:34,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398792301] [2022-11-19 07:00:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:34,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:34,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:34,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398792301] [2022-11-19 07:00:34,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398792301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:34,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:34,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:00:34,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153657348] [2022-11-19 07:00:34,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:34,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:34,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:34,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:34,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:34,778 INFO L87 Difference]: Start difference. First operand 852 states and 3556 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2022-11-19 07:00:34,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:34,892 INFO L93 Difference]: Finished difference Result 1163 states and 4823 transitions. [2022-11-19 07:00:34,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:34,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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 25 [2022-11-19 07:00:34,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:34,900 INFO L225 Difference]: With dead ends: 1163 [2022-11-19 07:00:34,900 INFO L226 Difference]: Without dead ends: 1154 [2022-11-19 07:00:34,901 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 [2022-11-19 07:00:34,901 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:34,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:00:34,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-11-19 07:00:34,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1154. [2022-11-19 07:00:34,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 4.158716392020815) internal successors, (4795), 1153 states have internal predecessors, (4795), 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) [2022-11-19 07:00:34,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 4795 transitions. [2022-11-19 07:00:34,960 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 4795 transitions. Word has length 25 [2022-11-19 07:00:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:34,961 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 4795 transitions. [2022-11-19 07:00:34,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2022-11-19 07:00:34,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 4795 transitions. [2022-11-19 07:00:34,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:00:34,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:34,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:34,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:00:34,966 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:34,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:34,967 INFO L85 PathProgramCache]: Analyzing trace with hash 942897240, now seen corresponding path program 1 times [2022-11-19 07:00:34,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:34,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591484227] [2022-11-19 07:00:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:34,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:35,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:35,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591484227] [2022-11-19 07:00:35,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591484227] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:00:35,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911273064] [2022-11-19 07:00:35,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:35,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:00:35,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:00:35,613 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:00:35,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:00:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:35,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-19 07:00:35,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:36,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:00:36,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:36,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911273064] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:00:36,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2085438496] [2022-11-19 07:00:36,675 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:00:36,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:00:36,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2022-11-19 07:00:36,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114848676] [2022-11-19 07:00:36,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:00:36,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-19 07:00:36,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:36,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-19 07:00:36,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:00:36,687 INFO L87 Difference]: Start difference. First operand 1154 states and 4795 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 15 states have internal predecessors, (68), 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) [2022-11-19 07:00:42,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:42,161 INFO L93 Difference]: Finished difference Result 9348 states and 38037 transitions. [2022-11-19 07:00:42,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-11-19 07:00:42,161 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 15 states have internal predecessors, (68), 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 27 [2022-11-19 07:00:42,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:42,214 INFO L225 Difference]: With dead ends: 9348 [2022-11-19 07:00:42,214 INFO L226 Difference]: Without dead ends: 9196 [2022-11-19 07:00:42,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2272 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1624, Invalid=5348, Unknown=0, NotChecked=0, Total=6972 [2022-11-19 07:00:42,217 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 681 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 2826 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:42,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 27 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2826 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-19 07:00:42,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9196 states. [2022-11-19 07:00:42,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9196 to 3370. [2022-11-19 07:00:42,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3370 states, 3369 states have (on average 4.365390323538142) internal successors, (14707), 3369 states have internal predecessors, (14707), 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) [2022-11-19 07:00:42,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3370 states to 3370 states and 14707 transitions. [2022-11-19 07:00:42,569 INFO L78 Accepts]: Start accepts. Automaton has 3370 states and 14707 transitions. Word has length 27 [2022-11-19 07:00:42,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:42,570 INFO L495 AbstractCegarLoop]: Abstraction has 3370 states and 14707 transitions. [2022-11-19 07:00:42,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 15 states have internal predecessors, (68), 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) [2022-11-19 07:00:42,571 INFO L276 IsEmpty]: Start isEmpty. Operand 3370 states and 14707 transitions. [2022-11-19 07:00:42,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:00:42,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:42,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:42,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:42,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:00:42,808 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:42,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:42,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1054208978, now seen corresponding path program 1 times [2022-11-19 07:00:42,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:42,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428804566] [2022-11-19 07:00:42,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:42,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:43,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:43,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428804566] [2022-11-19 07:00:43,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428804566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:43,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:43,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:00:43,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468073051] [2022-11-19 07:00:43,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:43,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:00:43,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:43,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:00:43,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:00:43,159 INFO L87 Difference]: Start difference. First operand 3370 states and 14707 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:00:43,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:43,418 INFO L93 Difference]: Finished difference Result 4926 states and 20458 transitions. [2022-11-19 07:00:43,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:00:43,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:00:43,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:43,447 INFO L225 Difference]: With dead ends: 4926 [2022-11-19 07:00:43,447 INFO L226 Difference]: Without dead ends: 4918 [2022-11-19 07:00:43,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:00:43,449 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 87 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:43,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 36 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:00:43,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4918 states. [2022-11-19 07:00:43,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4918 to 4170. [2022-11-19 07:00:43,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4170 states, 4169 states have (on average 4.371791796593907) internal successors, (18226), 4169 states have internal predecessors, (18226), 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) [2022-11-19 07:00:43,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4170 states to 4170 states and 18226 transitions. [2022-11-19 07:00:43,752 INFO L78 Accepts]: Start accepts. Automaton has 4170 states and 18226 transitions. Word has length 27 [2022-11-19 07:00:43,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:43,753 INFO L495 AbstractCegarLoop]: Abstraction has 4170 states and 18226 transitions. [2022-11-19 07:00:43,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:00:43,753 INFO L276 IsEmpty]: Start isEmpty. Operand 4170 states and 18226 transitions. [2022-11-19 07:00:43,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:00:43,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:43,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:43,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 07:00:43,774 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:43,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:43,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1722673584, now seen corresponding path program 1 times [2022-11-19 07:00:43,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:43,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082720473] [2022-11-19 07:00:43,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:43,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:44,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:44,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:44,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082720473] [2022-11-19 07:00:44,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082720473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:44,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:44,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:00:44,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786777092] [2022-11-19 07:00:44,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:44,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:00:44,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:44,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:00:44,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:00:44,059 INFO L87 Difference]: Start difference. First operand 4170 states and 18226 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:00:44,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:44,308 INFO L93 Difference]: Finished difference Result 4944 states and 21078 transitions. [2022-11-19 07:00:44,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:00:44,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:00:44,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:44,335 INFO L225 Difference]: With dead ends: 4944 [2022-11-19 07:00:44,335 INFO L226 Difference]: Without dead ends: 4740 [2022-11-19 07:00:44,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:00:44,337 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 66 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:44,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 36 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:00:44,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4740 states. [2022-11-19 07:00:44,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4740 to 4446. [2022-11-19 07:00:44,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4446 states, 4445 states have (on average 4.3635545556805395) internal successors, (19396), 4445 states have internal predecessors, (19396), 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) [2022-11-19 07:00:44,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4446 states to 4446 states and 19396 transitions. [2022-11-19 07:00:44,577 INFO L78 Accepts]: Start accepts. Automaton has 4446 states and 19396 transitions. Word has length 27 [2022-11-19 07:00:44,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:44,579 INFO L495 AbstractCegarLoop]: Abstraction has 4446 states and 19396 transitions. [2022-11-19 07:00:44,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:00:44,579 INFO L276 IsEmpty]: Start isEmpty. Operand 4446 states and 19396 transitions. [2022-11-19 07:00:44,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:00:44,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:44,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:44,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 07:00:44,598 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:44,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:44,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1272343882, now seen corresponding path program 1 times [2022-11-19 07:00:44,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:44,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760262464] [2022-11-19 07:00:44,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:44,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:44,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:44,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:44,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760262464] [2022-11-19 07:00:44,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760262464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:44,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:44,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:00:44,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574464657] [2022-11-19 07:00:44,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:44,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:00:44,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:44,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:00:44,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:00:44,972 INFO L87 Difference]: Start difference. First operand 4446 states and 19396 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-19 07:00:45,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:45,324 INFO L93 Difference]: Finished difference Result 5358 states and 22355 transitions. [2022-11-19 07:00:45,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:00:45,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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 27 [2022-11-19 07:00:45,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:45,351 INFO L225 Difference]: With dead ends: 5358 [2022-11-19 07:00:45,352 INFO L226 Difference]: Without dead ends: 5330 [2022-11-19 07:00:45,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:00:45,353 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 91 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:45,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 8 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:00:45,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5330 states. [2022-11-19 07:00:45,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5330 to 4940. [2022-11-19 07:00:45,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4940 states, 4939 states have (on average 4.2990483903624215) internal successors, (21233), 4939 states have internal predecessors, (21233), 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) [2022-11-19 07:00:45,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4940 states to 4940 states and 21233 transitions. [2022-11-19 07:00:45,525 INFO L78 Accepts]: Start accepts. Automaton has 4940 states and 21233 transitions. Word has length 27 [2022-11-19 07:00:45,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:45,526 INFO L495 AbstractCegarLoop]: Abstraction has 4940 states and 21233 transitions. [2022-11-19 07:00:45,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-19 07:00:45,526 INFO L276 IsEmpty]: Start isEmpty. Operand 4940 states and 21233 transitions. [2022-11-19 07:00:45,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:00:45,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:45,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:45,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 07:00:45,543 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:45,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:45,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1062737258, now seen corresponding path program 2 times [2022-11-19 07:00:45,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:45,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4203639] [2022-11-19 07:00:45,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:45,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:45,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:45,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4203639] [2022-11-19 07:00:45,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4203639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:45,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:45,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:00:45,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691351772] [2022-11-19 07:00:45,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:45,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:00:45,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:45,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:00:45,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:00:45,764 INFO L87 Difference]: Start difference. First operand 4940 states and 21233 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:00:46,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:46,026 INFO L93 Difference]: Finished difference Result 6998 states and 29341 transitions. [2022-11-19 07:00:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:00:46,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:00:46,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:46,059 INFO L225 Difference]: With dead ends: 6998 [2022-11-19 07:00:46,059 INFO L226 Difference]: Without dead ends: 6932 [2022-11-19 07:00:46,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:00:46,060 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 63 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:46,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 48 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:00:46,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6932 states. [2022-11-19 07:00:46,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6932 to 5480. [2022-11-19 07:00:46,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5480 states, 5479 states have (on average 4.377988684066436) internal successors, (23987), 5479 states have internal predecessors, (23987), 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) [2022-11-19 07:00:46,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5480 states to 5480 states and 23987 transitions. [2022-11-19 07:00:46,276 INFO L78 Accepts]: Start accepts. Automaton has 5480 states and 23987 transitions. Word has length 27 [2022-11-19 07:00:46,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:46,276 INFO L495 AbstractCegarLoop]: Abstraction has 5480 states and 23987 transitions. [2022-11-19 07:00:46,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:00:46,277 INFO L276 IsEmpty]: Start isEmpty. Operand 5480 states and 23987 transitions. [2022-11-19 07:00:46,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:00:46,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:46,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:46,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-19 07:00:46,298 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:46,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:46,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1610531454, now seen corresponding path program 3 times [2022-11-19 07:00:46,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:46,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300046741] [2022-11-19 07:00:46,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:46,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:46,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:46,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300046741] [2022-11-19 07:00:46,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300046741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:46,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:46,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:00:46,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184518950] [2022-11-19 07:00:46,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:46,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:00:46,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:46,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:00:46,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:00:46,622 INFO L87 Difference]: Start difference. First operand 5480 states and 23987 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:00:46,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:46,902 INFO L93 Difference]: Finished difference Result 6396 states and 26854 transitions. [2022-11-19 07:00:46,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:00:46,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:00:46,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:46,939 INFO L225 Difference]: With dead ends: 6396 [2022-11-19 07:00:46,939 INFO L226 Difference]: Without dead ends: 6276 [2022-11-19 07:00:46,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:00:46,940 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 54 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:46,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 44 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:00:46,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6276 states. [2022-11-19 07:00:47,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6276 to 5304. [2022-11-19 07:00:47,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5304 states, 5303 states have (on average 4.361682066754667) internal successors, (23130), 5303 states have internal predecessors, (23130), 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) [2022-11-19 07:00:47,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5304 states to 5304 states and 23130 transitions. [2022-11-19 07:00:47,296 INFO L78 Accepts]: Start accepts. Automaton has 5304 states and 23130 transitions. Word has length 27 [2022-11-19 07:00:47,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:47,297 INFO L495 AbstractCegarLoop]: Abstraction has 5304 states and 23130 transitions. [2022-11-19 07:00:47,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:00:47,297 INFO L276 IsEmpty]: Start isEmpty. Operand 5304 states and 23130 transitions. [2022-11-19 07:00:47,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:00:47,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:47,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:47,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-19 07:00:47,328 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:47,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:47,329 INFO L85 PathProgramCache]: Analyzing trace with hash -598195024, now seen corresponding path program 4 times [2022-11-19 07:00:47,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:47,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471454452] [2022-11-19 07:00:47,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:47,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:47,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:47,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:47,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471454452] [2022-11-19 07:00:47,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471454452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:47,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:47,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:00:47,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416792458] [2022-11-19 07:00:47,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:47,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:00:47,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:47,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:00:47,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:00:47,672 INFO L87 Difference]: Start difference. First operand 5304 states and 23130 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-19 07:00:48,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:48,028 INFO L93 Difference]: Finished difference Result 5836 states and 24493 transitions. [2022-11-19 07:00:48,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:00:48,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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 27 [2022-11-19 07:00:48,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:48,052 INFO L225 Difference]: With dead ends: 5836 [2022-11-19 07:00:48,052 INFO L226 Difference]: Without dead ends: 5764 [2022-11-19 07:00:48,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:00:48,054 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 121 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:48,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 8 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:00:48,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5764 states. [2022-11-19 07:00:48,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5764 to 5304. [2022-11-19 07:00:48,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5304 states, 5303 states have (on average 4.351687723929851) internal successors, (23077), 5303 states have internal predecessors, (23077), 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) [2022-11-19 07:00:48,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5304 states to 5304 states and 23077 transitions. [2022-11-19 07:00:48,350 INFO L78 Accepts]: Start accepts. Automaton has 5304 states and 23077 transitions. Word has length 27 [2022-11-19 07:00:48,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:48,350 INFO L495 AbstractCegarLoop]: Abstraction has 5304 states and 23077 transitions. [2022-11-19 07:00:48,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-19 07:00:48,351 INFO L276 IsEmpty]: Start isEmpty. Operand 5304 states and 23077 transitions. [2022-11-19 07:00:48,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:00:48,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:48,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:48,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-19 07:00:48,372 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:48,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:48,372 INFO L85 PathProgramCache]: Analyzing trace with hash 198847756, now seen corresponding path program 2 times [2022-11-19 07:00:48,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:48,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110399476] [2022-11-19 07:00:48,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:48,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:48,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:48,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:48,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110399476] [2022-11-19 07:00:48,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110399476] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:00:48,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30391415] [2022-11-19 07:00:48,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:00:48,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:00:48,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:00:48,687 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:00:48,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:00:48,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 07:00:48,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:00:48,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:00:48,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:48,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:00:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:49,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30391415] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 07:00:49,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:00:49,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2022-11-19 07:00:49,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413093972] [2022-11-19 07:00:49,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:49,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:00:49,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:49,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:00:49,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:00:49,050 INFO L87 Difference]: Start difference. First operand 5304 states and 23077 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:00:49,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:49,357 INFO L93 Difference]: Finished difference Result 8516 states and 35886 transitions. [2022-11-19 07:00:49,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:00:49,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:00:49,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:49,405 INFO L225 Difference]: With dead ends: 8516 [2022-11-19 07:00:49,405 INFO L226 Difference]: Without dead ends: 8516 [2022-11-19 07:00:49,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:00:49,406 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 95 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:49,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 49 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:00:49,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8516 states. [2022-11-19 07:00:49,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8516 to 5878. [2022-11-19 07:00:49,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5878 states, 5877 states have (on average 4.443593670239919) internal successors, (26115), 5877 states have internal predecessors, (26115), 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) [2022-11-19 07:00:49,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5878 states to 5878 states and 26115 transitions. [2022-11-19 07:00:49,732 INFO L78 Accepts]: Start accepts. Automaton has 5878 states and 26115 transitions. Word has length 27 [2022-11-19 07:00:49,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:49,734 INFO L495 AbstractCegarLoop]: Abstraction has 5878 states and 26115 transitions. [2022-11-19 07:00:49,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:00:49,736 INFO L276 IsEmpty]: Start isEmpty. Operand 5878 states and 26115 transitions. [2022-11-19 07:00:49,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:00:49,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:49,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:49,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:49,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-19 07:00:49,964 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:49,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:49,964 INFO L85 PathProgramCache]: Analyzing trace with hash -510524320, now seen corresponding path program 2 times [2022-11-19 07:00:49,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:49,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097548972] [2022-11-19 07:00:49,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:49,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:50,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:50,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:50,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097548972] [2022-11-19 07:00:50,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097548972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:50,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:50,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:00:50,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677619528] [2022-11-19 07:00:50,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:50,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:00:50,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:50,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:00:50,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:00:50,273 INFO L87 Difference]: Start difference. First operand 5878 states and 26115 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:00:50,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:50,580 INFO L93 Difference]: Finished difference Result 7536 states and 31476 transitions. [2022-11-19 07:00:50,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:00:50,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:00:50,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:50,616 INFO L225 Difference]: With dead ends: 7536 [2022-11-19 07:00:50,616 INFO L226 Difference]: Without dead ends: 7482 [2022-11-19 07:00:50,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:00:50,617 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 79 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:50,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 46 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:00:50,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2022-11-19 07:00:50,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 6022. [2022-11-19 07:00:50,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6022 states, 6021 states have (on average 4.410729114764989) internal successors, (26557), 6021 states have internal predecessors, (26557), 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) [2022-11-19 07:00:50,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6022 states to 6022 states and 26557 transitions. [2022-11-19 07:00:50,984 INFO L78 Accepts]: Start accepts. Automaton has 6022 states and 26557 transitions. Word has length 27 [2022-11-19 07:00:50,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:50,984 INFO L495 AbstractCegarLoop]: Abstraction has 6022 states and 26557 transitions. [2022-11-19 07:00:50,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:00:50,985 INFO L276 IsEmpty]: Start isEmpty. Operand 6022 states and 26557 transitions. [2022-11-19 07:00:51,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:00:51,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:51,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:51,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-19 07:00:51,010 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:51,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:51,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1117012062, now seen corresponding path program 2 times [2022-11-19 07:00:51,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:51,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442820573] [2022-11-19 07:00:51,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:51,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:51,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:51,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:51,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442820573] [2022-11-19 07:00:51,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442820573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:51,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:51,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:00:51,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832285758] [2022-11-19 07:00:51,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:51,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:00:51,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:51,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:00:51,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:00:51,403 INFO L87 Difference]: Start difference. First operand 6022 states and 26557 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:00:51,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:51,851 INFO L93 Difference]: Finished difference Result 10050 states and 41673 transitions. [2022-11-19 07:00:51,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:00:51,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:00:51,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:51,907 INFO L225 Difference]: With dead ends: 10050 [2022-11-19 07:00:51,907 INFO L226 Difference]: Without dead ends: 9802 [2022-11-19 07:00:51,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:00:51,909 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 163 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:51,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 10 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:00:51,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9802 states. [2022-11-19 07:00:52,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9802 to 7054. [2022-11-19 07:00:52,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7054 states, 7053 states have (on average 4.448603431164043) internal successors, (31376), 7053 states have internal predecessors, (31376), 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) [2022-11-19 07:00:52,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7054 states to 7054 states and 31376 transitions. [2022-11-19 07:00:52,394 INFO L78 Accepts]: Start accepts. Automaton has 7054 states and 31376 transitions. Word has length 27 [2022-11-19 07:00:52,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:52,395 INFO L495 AbstractCegarLoop]: Abstraction has 7054 states and 31376 transitions. [2022-11-19 07:00:52,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:00:52,395 INFO L276 IsEmpty]: Start isEmpty. Operand 7054 states and 31376 transitions. [2022-11-19 07:00:52,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:00:52,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:52,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:52,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-19 07:00:52,434 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:52,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:52,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2115305834, now seen corresponding path program 5 times [2022-11-19 07:00:52,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:52,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139259560] [2022-11-19 07:00:52,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:52,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:53,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:53,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139259560] [2022-11-19 07:00:53,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139259560] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:00:53,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599871093] [2022-11-19 07:00:53,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:00:53,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:00:53,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:00:53,032 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:00:53,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:00:53,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 07:00:53,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:00:53,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 07:00:53,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:53,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:53,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:00:53,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599871093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:53,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:00:53,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2022-11-19 07:00:53,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253053185] [2022-11-19 07:00:53,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:53,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:00:53,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:53,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:00:53,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:00:53,454 INFO L87 Difference]: Start difference. First operand 7054 states and 31376 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:00:53,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:53,960 INFO L93 Difference]: Finished difference Result 8028 states and 34183 transitions. [2022-11-19 07:00:53,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:00:53,961 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:00:53,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:54,007 INFO L225 Difference]: With dead ends: 8028 [2022-11-19 07:00:54,008 INFO L226 Difference]: Without dead ends: 6940 [2022-11-19 07:00:54,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:00:54,009 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 86 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:54,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 9 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:00:54,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6940 states. [2022-11-19 07:00:54,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6940 to 6940. [2022-11-19 07:00:54,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6940 states, 6939 states have (on average 4.444588557429024) internal successors, (30841), 6939 states have internal predecessors, (30841), 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) [2022-11-19 07:00:54,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6940 states to 6940 states and 30841 transitions. [2022-11-19 07:00:54,338 INFO L78 Accepts]: Start accepts. Automaton has 6940 states and 30841 transitions. Word has length 27 [2022-11-19 07:00:54,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:54,340 INFO L495 AbstractCegarLoop]: Abstraction has 6940 states and 30841 transitions. [2022-11-19 07:00:54,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:00:54,340 INFO L276 IsEmpty]: Start isEmpty. Operand 6940 states and 30841 transitions. [2022-11-19 07:00:54,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:00:54,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:54,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:54,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:54,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-19 07:00:54,580 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:54,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:54,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1452028818, now seen corresponding path program 3 times [2022-11-19 07:00:54,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:54,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055854683] [2022-11-19 07:00:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:54,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:54,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:54,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:54,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055854683] [2022-11-19 07:00:54,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055854683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:54,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:54,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:00:54,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334130682] [2022-11-19 07:00:54,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:54,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:00:54,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:54,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:00:54,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:00:54,851 INFO L87 Difference]: Start difference. First operand 6940 states and 30841 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:00:55,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:55,323 INFO L93 Difference]: Finished difference Result 10750 states and 45807 transitions. [2022-11-19 07:00:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:00:55,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:00:55,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:55,365 INFO L225 Difference]: With dead ends: 10750 [2022-11-19 07:00:55,366 INFO L226 Difference]: Without dead ends: 10750 [2022-11-19 07:00:55,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:00:55,367 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 69 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:55,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 56 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:00:55,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10750 states. [2022-11-19 07:00:55,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10750 to 7398. [2022-11-19 07:00:55,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7398 states, 7397 states have (on average 4.450858456130864) internal successors, (32923), 7397 states have internal predecessors, (32923), 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) [2022-11-19 07:00:55,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7398 states to 7398 states and 32923 transitions. [2022-11-19 07:00:55,719 INFO L78 Accepts]: Start accepts. Automaton has 7398 states and 32923 transitions. Word has length 27 [2022-11-19 07:00:55,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:55,720 INFO L495 AbstractCegarLoop]: Abstraction has 7398 states and 32923 transitions. [2022-11-19 07:00:55,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:00:55,720 INFO L276 IsEmpty]: Start isEmpty. Operand 7398 states and 32923 transitions. [2022-11-19 07:00:55,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:00:55,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:55,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:55,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-19 07:00:55,740 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:55,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:55,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1492152078, now seen corresponding path program 3 times [2022-11-19 07:00:55,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:55,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308635372] [2022-11-19 07:00:55,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:55,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:56,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:56,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:56,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308635372] [2022-11-19 07:00:56,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308635372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:56,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:56,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:00:56,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527119714] [2022-11-19 07:00:56,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:56,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:00:56,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:56,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:00:56,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:00:56,227 INFO L87 Difference]: Start difference. First operand 7398 states and 32923 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-19 07:00:56,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:56,877 INFO L93 Difference]: Finished difference Result 12160 states and 51941 transitions. [2022-11-19 07:00:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:00:56,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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 27 [2022-11-19 07:00:56,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:56,948 INFO L225 Difference]: With dead ends: 12160 [2022-11-19 07:00:56,949 INFO L226 Difference]: Without dead ends: 11882 [2022-11-19 07:00:56,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:00:56,950 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 135 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:56,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 13 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:00:56,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11882 states. [2022-11-19 07:00:57,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11882 to 7938. [2022-11-19 07:00:57,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7938 states, 7937 states have (on average 4.514048129016001) internal successors, (35828), 7937 states have internal predecessors, (35828), 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) [2022-11-19 07:00:57,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7938 states to 7938 states and 35828 transitions. [2022-11-19 07:00:57,378 INFO L78 Accepts]: Start accepts. Automaton has 7938 states and 35828 transitions. Word has length 27 [2022-11-19 07:00:57,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:57,378 INFO L495 AbstractCegarLoop]: Abstraction has 7938 states and 35828 transitions. [2022-11-19 07:00:57,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-19 07:00:57,379 INFO L276 IsEmpty]: Start isEmpty. Operand 7938 states and 35828 transitions. [2022-11-19 07:00:57,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:00:57,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:57,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:57,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-19 07:00:57,407 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:57,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:57,407 INFO L85 PathProgramCache]: Analyzing trace with hash -501735646, now seen corresponding path program 4 times [2022-11-19 07:00:57,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:57,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655808746] [2022-11-19 07:00:57,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:57,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:57,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:57,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:57,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655808746] [2022-11-19 07:00:57,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655808746] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:00:57,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385762893] [2022-11-19 07:00:57,881 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:00:57,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:00:57,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:00:57,887 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:00:57,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:00:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:58,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:00:58,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:58,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:58,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:00:58,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:58,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385762893] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 07:00:58,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:00:58,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 12 [2022-11-19 07:00:58,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395228295] [2022-11-19 07:00:58,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:58,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:00:58,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:58,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:00:58,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:00:58,359 INFO L87 Difference]: Start difference. First operand 7938 states and 35828 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:00:59,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:59,000 INFO L93 Difference]: Finished difference Result 15742 states and 67875 transitions. [2022-11-19 07:00:59,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:00:59,001 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:00:59,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:59,059 INFO L225 Difference]: With dead ends: 15742 [2022-11-19 07:00:59,059 INFO L226 Difference]: Without dead ends: 15562 [2022-11-19 07:00:59,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-19 07:00:59,060 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 207 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:59,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 13 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:00:59,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15562 states. [2022-11-19 07:00:59,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15562 to 8950. [2022-11-19 07:00:59,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8950 states, 8949 states have (on average 4.617499161917532) internal successors, (41322), 8949 states have internal predecessors, (41322), 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) [2022-11-19 07:00:59,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8950 states to 8950 states and 41322 transitions. [2022-11-19 07:00:59,529 INFO L78 Accepts]: Start accepts. Automaton has 8950 states and 41322 transitions. Word has length 27 [2022-11-19 07:00:59,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:59,529 INFO L495 AbstractCegarLoop]: Abstraction has 8950 states and 41322 transitions. [2022-11-19 07:00:59,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:00:59,529 INFO L276 IsEmpty]: Start isEmpty. Operand 8950 states and 41322 transitions. [2022-11-19 07:00:59,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:00:59,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:59,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:59,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:59,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:00:59,752 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:00:59,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:59,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1209405324, now seen corresponding path program 6 times [2022-11-19 07:00:59,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:59,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646380059] [2022-11-19 07:00:59,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:59,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:00,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:00,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:00,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646380059] [2022-11-19 07:01:00,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646380059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:00,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:00,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:01:00,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609648904] [2022-11-19 07:01:00,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:00,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:01:00,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:00,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:01:00,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:01:00,314 INFO L87 Difference]: Start difference. First operand 8950 states and 41322 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:01,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:01,082 INFO L93 Difference]: Finished difference Result 18104 states and 79857 transitions. [2022-11-19 07:01:01,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:01:01,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:01:01,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:01,183 INFO L225 Difference]: With dead ends: 18104 [2022-11-19 07:01:01,183 INFO L226 Difference]: Without dead ends: 17768 [2022-11-19 07:01:01,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:01:01,184 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 156 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:01,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 14 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:01:01,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17768 states. [2022-11-19 07:01:01,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17768 to 9242. [2022-11-19 07:01:01,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9242 states, 9241 states have (on average 4.654474623958446) internal successors, (43012), 9241 states have internal predecessors, (43012), 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) [2022-11-19 07:01:01,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9242 states to 9242 states and 43012 transitions. [2022-11-19 07:01:01,606 INFO L78 Accepts]: Start accepts. Automaton has 9242 states and 43012 transitions. Word has length 27 [2022-11-19 07:01:01,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:01,606 INFO L495 AbstractCegarLoop]: Abstraction has 9242 states and 43012 transitions. [2022-11-19 07:01:01,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:01,607 INFO L276 IsEmpty]: Start isEmpty. Operand 9242 states and 43012 transitions. [2022-11-19 07:01:01,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:01,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:01,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:01,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-19 07:01:01,630 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:01,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:01,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1465745784, now seen corresponding path program 5 times [2022-11-19 07:01:01,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:01,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082772229] [2022-11-19 07:01:01,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:01,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:02,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:02,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:02,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082772229] [2022-11-19 07:01:02,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082772229] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:01:02,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091294095] [2022-11-19 07:01:02,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:01:02,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:02,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:02,146 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:02,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:01:02,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 07:01:02,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:01:02,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 07:01:02,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:02,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:01:03,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:03,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091294095] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:01:03,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [207842293] [2022-11-19 07:01:03,101 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:01:03,103 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:01:03,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2022-11-19 07:01:03,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406071388] [2022-11-19 07:01:03,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:01:03,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-19 07:01:03,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:03,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-19 07:01:03,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:01:03,106 INFO L87 Difference]: Start difference. First operand 9242 states and 43012 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 15 states have internal predecessors, (67), 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) [2022-11-19 07:01:09,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:09,071 INFO L93 Difference]: Finished difference Result 22891 states and 97482 transitions. [2022-11-19 07:01:09,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-19 07:01:09,072 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 15 states have internal predecessors, (67), 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 27 [2022-11-19 07:01:09,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:09,186 INFO L225 Difference]: With dead ends: 22891 [2022-11-19 07:01:09,186 INFO L226 Difference]: Without dead ends: 22202 [2022-11-19 07:01:09,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=793, Invalid=2629, Unknown=0, NotChecked=0, Total=3422 [2022-11-19 07:01:09,188 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 535 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 2233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:09,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 39 Invalid, 2233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-19 07:01:09,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22202 states. [2022-11-19 07:01:09,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22202 to 10018. [2022-11-19 07:01:09,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10018 states, 10017 states have (on average 4.6622741339722475) internal successors, (46702), 10017 states have internal predecessors, (46702), 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) [2022-11-19 07:01:09,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10018 states to 10018 states and 46702 transitions. [2022-11-19 07:01:09,784 INFO L78 Accepts]: Start accepts. Automaton has 10018 states and 46702 transitions. Word has length 27 [2022-11-19 07:01:09,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:09,784 INFO L495 AbstractCegarLoop]: Abstraction has 10018 states and 46702 transitions. [2022-11-19 07:01:09,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 15 states have internal predecessors, (67), 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) [2022-11-19 07:01:09,785 INFO L276 IsEmpty]: Start isEmpty. Operand 10018 states and 46702 transitions. [2022-11-19 07:01:09,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:09,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:09,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:09,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:01:10,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-19 07:01:10,022 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:10,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:10,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1817797638, now seen corresponding path program 6 times [2022-11-19 07:01:10,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:10,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466440136] [2022-11-19 07:01:10,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:10,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:10,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:10,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466440136] [2022-11-19 07:01:10,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466440136] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:01:10,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55993313] [2022-11-19 07:01:10,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:01:10,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:10,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:10,467 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:10,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:01:10,636 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:01:10,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:01:10,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 07:01:10,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:10,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:01:11,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:11,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55993313] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:01:11,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1471586054] [2022-11-19 07:01:11,242 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:01:11,243 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:01:11,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 15 [2022-11-19 07:01:11,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566022152] [2022-11-19 07:01:11,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:01:11,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-19 07:01:11,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:11,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-19 07:01:11,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:01:11,247 INFO L87 Difference]: Start difference. First operand 10018 states and 46702 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:01:13,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:13,900 INFO L93 Difference]: Finished difference Result 25126 states and 105143 transitions. [2022-11-19 07:01:13,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-19 07:01:13,901 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-19 07:01:13,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:14,002 INFO L225 Difference]: With dead ends: 25126 [2022-11-19 07:01:14,002 INFO L226 Difference]: Without dead ends: 24570 [2022-11-19 07:01:14,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=374, Invalid=958, Unknown=0, NotChecked=0, Total=1332 [2022-11-19 07:01:14,003 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 650 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:14,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 32 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-19 07:01:14,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24570 states. [2022-11-19 07:01:14,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24570 to 10578. [2022-11-19 07:01:14,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10578 states, 10577 states have (on average 4.688285903375248) internal successors, (49588), 10577 states have internal predecessors, (49588), 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) [2022-11-19 07:01:14,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10578 states to 10578 states and 49588 transitions. [2022-11-19 07:01:14,564 INFO L78 Accepts]: Start accepts. Automaton has 10578 states and 49588 transitions. Word has length 27 [2022-11-19 07:01:14,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:14,564 INFO L495 AbstractCegarLoop]: Abstraction has 10578 states and 49588 transitions. [2022-11-19 07:01:14,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:01:14,565 INFO L276 IsEmpty]: Start isEmpty. Operand 10578 states and 49588 transitions. [2022-11-19 07:01:14,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:14,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:14,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:14,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:01:14,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-19 07:01:14,807 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:14,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:14,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1784734302, now seen corresponding path program 4 times [2022-11-19 07:01:14,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:14,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932493780] [2022-11-19 07:01:14,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:14,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:15,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:15,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:15,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932493780] [2022-11-19 07:01:15,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932493780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:15,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:15,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:01:15,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642421325] [2022-11-19 07:01:15,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:15,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:01:15,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:15,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:01:15,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:01:15,319 INFO L87 Difference]: Start difference. First operand 10578 states and 49588 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-19 07:01:16,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:16,441 INFO L93 Difference]: Finished difference Result 16878 states and 74054 transitions. [2022-11-19 07:01:16,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:01:16,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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 27 [2022-11-19 07:01:16,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:16,511 INFO L225 Difference]: With dead ends: 16878 [2022-11-19 07:01:16,511 INFO L226 Difference]: Without dead ends: 16784 [2022-11-19 07:01:16,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:01:16,512 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 167 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:16,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 20 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 07:01:16,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16784 states. [2022-11-19 07:01:16,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16784 to 10802. [2022-11-19 07:01:16,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10802 states, 10801 states have (on average 4.70150911952597) internal successors, (50781), 10801 states have internal predecessors, (50781), 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) [2022-11-19 07:01:17,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10802 states to 10802 states and 50781 transitions. [2022-11-19 07:01:17,013 INFO L78 Accepts]: Start accepts. Automaton has 10802 states and 50781 transitions. Word has length 27 [2022-11-19 07:01:17,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:17,014 INFO L495 AbstractCegarLoop]: Abstraction has 10802 states and 50781 transitions. [2022-11-19 07:01:17,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-19 07:01:17,014 INFO L276 IsEmpty]: Start isEmpty. Operand 10802 states and 50781 transitions. [2022-11-19 07:01:17,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:17,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:17,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:17,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-19 07:01:17,041 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:17,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:17,042 INFO L85 PathProgramCache]: Analyzing trace with hash -461422434, now seen corresponding path program 7 times [2022-11-19 07:01:17,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:17,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413356840] [2022-11-19 07:01:17,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:17,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:17,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:17,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413356840] [2022-11-19 07:01:17,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413356840] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:01:17,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352232759] [2022-11-19 07:01:17,491 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:01:17,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:17,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:17,495 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:17,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:01:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:17,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 07:01:17,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:17,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:17,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:01:17,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352232759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:17,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:01:17,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2022-11-19 07:01:17,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333007611] [2022-11-19 07:01:17,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:17,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:01:17,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:17,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:01:17,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:01:17,794 INFO L87 Difference]: Start difference. First operand 10802 states and 50781 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:18,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:18,463 INFO L93 Difference]: Finished difference Result 19018 states and 87749 transitions. [2022-11-19 07:01:18,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:01:18,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:01:18,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:18,540 INFO L225 Difference]: With dead ends: 19018 [2022-11-19 07:01:18,540 INFO L226 Difference]: Without dead ends: 18408 [2022-11-19 07:01:18,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:01:18,541 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 90 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:18,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:01:18,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18408 states. [2022-11-19 07:01:18,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18408 to 12140. [2022-11-19 07:01:18,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12140 states, 12139 states have (on average 4.743389076530192) internal successors, (57580), 12139 states have internal predecessors, (57580), 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) [2022-11-19 07:01:18,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12140 states to 12140 states and 57580 transitions. [2022-11-19 07:01:18,975 INFO L78 Accepts]: Start accepts. Automaton has 12140 states and 57580 transitions. Word has length 27 [2022-11-19 07:01:18,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:18,975 INFO L495 AbstractCegarLoop]: Abstraction has 12140 states and 57580 transitions. [2022-11-19 07:01:18,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:18,976 INFO L276 IsEmpty]: Start isEmpty. Operand 12140 states and 57580 transitions. [2022-11-19 07:01:19,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:19,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:19,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:19,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-19 07:01:19,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-19 07:01:19,208 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:19,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:19,209 INFO L85 PathProgramCache]: Analyzing trace with hash -136367002, now seen corresponding path program 8 times [2022-11-19 07:01:19,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:19,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918584099] [2022-11-19 07:01:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:19,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:19,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:19,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:19,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918584099] [2022-11-19 07:01:19,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918584099] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:01:19,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20694160] [2022-11-19 07:01:19,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:01:19,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:19,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:19,759 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:19,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 07:01:19,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 07:01:19,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:01:19,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:01:19,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:20,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:01:20,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20694160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:20,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:01:20,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2022-11-19 07:01:20,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312197769] [2022-11-19 07:01:20,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:20,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:01:20,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:20,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:01:20,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:01:20,194 INFO L87 Difference]: Start difference. First operand 12140 states and 57580 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:20,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:20,811 INFO L93 Difference]: Finished difference Result 18268 states and 83491 transitions. [2022-11-19 07:01:20,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:01:20,812 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:01:20,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:20,889 INFO L225 Difference]: With dead ends: 18268 [2022-11-19 07:01:20,889 INFO L226 Difference]: Without dead ends: 17904 [2022-11-19 07:01:20,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-19 07:01:20,890 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 153 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:20,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 30 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:01:20,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17904 states. [2022-11-19 07:01:21,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17904 to 11790. [2022-11-19 07:01:21,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11790 states, 11789 states have (on average 4.7260157774196285) internal successors, (55715), 11789 states have internal predecessors, (55715), 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) [2022-11-19 07:01:21,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11790 states to 11790 states and 55715 transitions. [2022-11-19 07:01:21,372 INFO L78 Accepts]: Start accepts. Automaton has 11790 states and 55715 transitions. Word has length 27 [2022-11-19 07:01:21,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:21,373 INFO L495 AbstractCegarLoop]: Abstraction has 11790 states and 55715 transitions. [2022-11-19 07:01:21,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:21,373 INFO L276 IsEmpty]: Start isEmpty. Operand 11790 states and 55715 transitions. [2022-11-19 07:01:21,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:21,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:21,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:21,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:01:21,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:21,605 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:21,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:21,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1085315058, now seen corresponding path program 3 times [2022-11-19 07:01:21,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:21,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274780187] [2022-11-19 07:01:21,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:21,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:21,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:21,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274780187] [2022-11-19 07:01:21,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274780187] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:01:21,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982600090] [2022-11-19 07:01:21,960 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:01:21,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:21,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:21,962 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:21,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 07:01:22,140 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:01:22,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:01:22,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-19 07:01:22,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:22,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:01:22,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:22,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982600090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:01:22,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [642694917] [2022-11-19 07:01:22,776 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:01:22,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:01:22,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2022-11-19 07:01:22,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173756390] [2022-11-19 07:01:22,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:01:22,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-19 07:01:22,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:22,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-19 07:01:22,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:01:22,779 INFO L87 Difference]: Start difference. First operand 11790 states and 55715 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 15 states have internal predecessors, (67), 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) [2022-11-19 07:01:29,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:29,080 INFO L93 Difference]: Finished difference Result 39118 states and 172272 transitions. [2022-11-19 07:01:29,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-11-19 07:01:29,081 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 15 states have internal predecessors, (67), 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 27 [2022-11-19 07:01:29,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:29,288 INFO L225 Difference]: With dead ends: 39118 [2022-11-19 07:01:29,288 INFO L226 Difference]: Without dead ends: 37762 [2022-11-19 07:01:29,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3691 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2394, Invalid=7908, Unknown=0, NotChecked=0, Total=10302 [2022-11-19 07:01:29,292 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 750 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 2632 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 2724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:29,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 46 Invalid, 2724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2632 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-19 07:01:29,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37762 states. [2022-11-19 07:01:30,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37762 to 14382. [2022-11-19 07:01:30,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14382 states, 14381 states have (on average 4.771434531673736) internal successors, (68618), 14381 states have internal predecessors, (68618), 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) [2022-11-19 07:01:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14382 states to 14382 states and 68618 transitions. [2022-11-19 07:01:30,290 INFO L78 Accepts]: Start accepts. Automaton has 14382 states and 68618 transitions. Word has length 27 [2022-11-19 07:01:30,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:30,290 INFO L495 AbstractCegarLoop]: Abstraction has 14382 states and 68618 transitions. [2022-11-19 07:01:30,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 15 states have internal predecessors, (67), 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) [2022-11-19 07:01:30,290 INFO L276 IsEmpty]: Start isEmpty. Operand 14382 states and 68618 transitions. [2022-11-19 07:01:30,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:30,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:30,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:30,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-19 07:01:30,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:30,533 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:30,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:30,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1781400170, now seen corresponding path program 4 times [2022-11-19 07:01:30,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:30,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185221151] [2022-11-19 07:01:30,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:30,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:30,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:30,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185221151] [2022-11-19 07:01:30,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185221151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:30,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:30,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:01:30,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048021994] [2022-11-19 07:01:30,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:30,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:01:30,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:30,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:01:30,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:01:30,790 INFO L87 Difference]: Start difference. First operand 14382 states and 68618 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:31,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:31,196 INFO L93 Difference]: Finished difference Result 16748 states and 77111 transitions. [2022-11-19 07:01:31,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:01:31,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:01:31,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:31,272 INFO L225 Difference]: With dead ends: 16748 [2022-11-19 07:01:31,272 INFO L226 Difference]: Without dead ends: 16420 [2022-11-19 07:01:31,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:01:31,273 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 66 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:31,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 49 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:01:31,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16420 states. [2022-11-19 07:01:31,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16420 to 14084. [2022-11-19 07:01:31,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14084 states, 14083 states have (on average 4.80728537953561) internal successors, (67701), 14083 states have internal predecessors, (67701), 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) [2022-11-19 07:01:31,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14084 states to 14084 states and 67701 transitions. [2022-11-19 07:01:31,736 INFO L78 Accepts]: Start accepts. Automaton has 14084 states and 67701 transitions. Word has length 27 [2022-11-19 07:01:31,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:31,737 INFO L495 AbstractCegarLoop]: Abstraction has 14084 states and 67701 transitions. [2022-11-19 07:01:31,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:31,737 INFO L276 IsEmpty]: Start isEmpty. Operand 14084 states and 67701 transitions. [2022-11-19 07:01:31,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:31,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:31,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:31,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-19 07:01:31,778 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:31,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:31,778 INFO L85 PathProgramCache]: Analyzing trace with hash -544341206, now seen corresponding path program 5 times [2022-11-19 07:01:31,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:31,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797087083] [2022-11-19 07:01:31,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:31,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:32,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:32,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:32,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797087083] [2022-11-19 07:01:32,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797087083] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:01:32,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111868530] [2022-11-19 07:01:32,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:01:32,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:32,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:32,159 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:32,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 07:01:32,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 07:01:32,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:01:32,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:01:32,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:32,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:32,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:01:32,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:32,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111868530] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 07:01:32,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:01:32,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2022-11-19 07:01:32,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500385123] [2022-11-19 07:01:32,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:32,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:01:32,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:32,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:01:32,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:01:32,679 INFO L87 Difference]: Start difference. First operand 14084 states and 67701 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:33,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:33,068 INFO L93 Difference]: Finished difference Result 16178 states and 74434 transitions. [2022-11-19 07:01:33,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:01:33,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:01:33,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:33,143 INFO L225 Difference]: With dead ends: 16178 [2022-11-19 07:01:33,143 INFO L226 Difference]: Without dead ends: 16134 [2022-11-19 07:01:33,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:01:33,144 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 62 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:33,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 56 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:01:33,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16134 states. [2022-11-19 07:01:33,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16134 to 11548. [2022-11-19 07:01:33,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11548 states, 11547 states have (on average 4.742270719667446) internal successors, (54759), 11547 states have internal predecessors, (54759), 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) [2022-11-19 07:01:33,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11548 states to 11548 states and 54759 transitions. [2022-11-19 07:01:33,541 INFO L78 Accepts]: Start accepts. Automaton has 11548 states and 54759 transitions. Word has length 27 [2022-11-19 07:01:33,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:33,541 INFO L495 AbstractCegarLoop]: Abstraction has 11548 states and 54759 transitions. [2022-11-19 07:01:33,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:33,542 INFO L276 IsEmpty]: Start isEmpty. Operand 11548 states and 54759 transitions. [2022-11-19 07:01:33,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:33,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:33,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:33,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-19 07:01:33,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:33,775 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:33,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:33,775 INFO L85 PathProgramCache]: Analyzing trace with hash 904210352, now seen corresponding path program 6 times [2022-11-19 07:01:33,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:33,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12804935] [2022-11-19 07:01:33,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:33,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:34,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:34,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:34,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12804935] [2022-11-19 07:01:34,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12804935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:34,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:34,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:01:34,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913486371] [2022-11-19 07:01:34,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:34,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:01:34,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:34,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:01:34,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:01:34,235 INFO L87 Difference]: Start difference. First operand 11548 states and 54759 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:34,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:34,690 INFO L93 Difference]: Finished difference Result 11710 states and 55153 transitions. [2022-11-19 07:01:34,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:01:34,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:01:34,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:34,763 INFO L225 Difference]: With dead ends: 11710 [2022-11-19 07:01:34,764 INFO L226 Difference]: Without dead ends: 11674 [2022-11-19 07:01:34,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:01:34,765 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 79 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:34,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 4 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:01:34,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11674 states. [2022-11-19 07:01:35,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11674 to 11544. [2022-11-19 07:01:35,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11544 states, 11543 states have (on average 4.737676513904531) internal successors, (54687), 11543 states have internal predecessors, (54687), 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) [2022-11-19 07:01:35,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11544 states to 11544 states and 54687 transitions. [2022-11-19 07:01:35,115 INFO L78 Accepts]: Start accepts. Automaton has 11544 states and 54687 transitions. Word has length 27 [2022-11-19 07:01:35,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:35,115 INFO L495 AbstractCegarLoop]: Abstraction has 11544 states and 54687 transitions. [2022-11-19 07:01:35,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:35,115 INFO L276 IsEmpty]: Start isEmpty. Operand 11544 states and 54687 transitions. [2022-11-19 07:01:35,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:35,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:35,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:35,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-19 07:01:35,149 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:35,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:35,150 INFO L85 PathProgramCache]: Analyzing trace with hash 35777802, now seen corresponding path program 5 times [2022-11-19 07:01:35,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:35,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623364260] [2022-11-19 07:01:35,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:35,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:35,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:35,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:35,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623364260] [2022-11-19 07:01:35,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623364260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:35,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:35,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:01:35,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651008801] [2022-11-19 07:01:35,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:35,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:01:35,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:35,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:01:35,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:01:35,404 INFO L87 Difference]: Start difference. First operand 11544 states and 54687 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:35,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:35,792 INFO L93 Difference]: Finished difference Result 15056 states and 67604 transitions. [2022-11-19 07:01:35,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:01:35,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:01:35,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:35,887 INFO L225 Difference]: With dead ends: 15056 [2022-11-19 07:01:35,887 INFO L226 Difference]: Without dead ends: 14996 [2022-11-19 07:01:35,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:01:35,889 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 61 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:35,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 48 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:01:35,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14996 states. [2022-11-19 07:01:36,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14996 to 9538. [2022-11-19 07:01:36,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9538 states, 9537 states have (on average 4.605955751284471) internal successors, (43927), 9537 states have internal predecessors, (43927), 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) [2022-11-19 07:01:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9538 states to 9538 states and 43927 transitions. [2022-11-19 07:01:36,217 INFO L78 Accepts]: Start accepts. Automaton has 9538 states and 43927 transitions. Word has length 27 [2022-11-19 07:01:36,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:36,217 INFO L495 AbstractCegarLoop]: Abstraction has 9538 states and 43927 transitions. [2022-11-19 07:01:36,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:36,218 INFO L276 IsEmpty]: Start isEmpty. Operand 9538 states and 43927 transitions. [2022-11-19 07:01:36,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:36,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:36,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:36,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-19 07:01:36,241 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:36,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:36,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1634580024, now seen corresponding path program 7 times [2022-11-19 07:01:36,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:36,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333897128] [2022-11-19 07:01:36,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:36,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:36,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:36,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:36,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333897128] [2022-11-19 07:01:36,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333897128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:36,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:36,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:01:36,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423757308] [2022-11-19 07:01:36,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:36,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:01:36,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:36,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:01:36,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:01:36,751 INFO L87 Difference]: Start difference. First operand 9538 states and 43927 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-19 07:01:37,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:37,192 INFO L93 Difference]: Finished difference Result 12536 states and 56580 transitions. [2022-11-19 07:01:37,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:01:37,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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 27 [2022-11-19 07:01:37,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:37,257 INFO L225 Difference]: With dead ends: 12536 [2022-11-19 07:01:37,258 INFO L226 Difference]: Without dead ends: 12452 [2022-11-19 07:01:37,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:01:37,259 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 89 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:37,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 20 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:01:37,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12452 states. [2022-11-19 07:01:37,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12452 to 9614. [2022-11-19 07:01:37,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9614 states, 9613 states have (on average 4.6059502756683655) internal successors, (44277), 9613 states have internal predecessors, (44277), 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) [2022-11-19 07:01:37,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9614 states to 9614 states and 44277 transitions. [2022-11-19 07:01:37,642 INFO L78 Accepts]: Start accepts. Automaton has 9614 states and 44277 transitions. Word has length 27 [2022-11-19 07:01:37,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:37,642 INFO L495 AbstractCegarLoop]: Abstraction has 9614 states and 44277 transitions. [2022-11-19 07:01:37,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-19 07:01:37,643 INFO L276 IsEmpty]: Start isEmpty. Operand 9614 states and 44277 transitions. [2022-11-19 07:01:37,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:37,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:37,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:37,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-19 07:01:37,668 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:37,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:37,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1084667146, now seen corresponding path program 8 times [2022-11-19 07:01:37,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:37,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003388564] [2022-11-19 07:01:37,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:37,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:38,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:38,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003388564] [2022-11-19 07:01:38,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003388564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:38,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:38,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:01:38,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896380163] [2022-11-19 07:01:38,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:38,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:01:38,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:38,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:01:38,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:01:38,075 INFO L87 Difference]: Start difference. First operand 9614 states and 44277 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:38,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:38,979 INFO L93 Difference]: Finished difference Result 12324 states and 54612 transitions. [2022-11-19 07:01:38,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:01:38,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:01:38,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:39,028 INFO L225 Difference]: With dead ends: 12324 [2022-11-19 07:01:39,028 INFO L226 Difference]: Without dead ends: 12248 [2022-11-19 07:01:39,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:01:39,029 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 167 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:39,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 7 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:01:39,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12248 states. [2022-11-19 07:01:39,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12248 to 9912. [2022-11-19 07:01:39,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9912 states, 9911 states have (on average 4.630511552820099) internal successors, (45893), 9911 states have internal predecessors, (45893), 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) [2022-11-19 07:01:39,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9912 states to 9912 states and 45893 transitions. [2022-11-19 07:01:39,375 INFO L78 Accepts]: Start accepts. Automaton has 9912 states and 45893 transitions. Word has length 27 [2022-11-19 07:01:39,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:39,376 INFO L495 AbstractCegarLoop]: Abstraction has 9912 states and 45893 transitions. [2022-11-19 07:01:39,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:39,376 INFO L276 IsEmpty]: Start isEmpty. Operand 9912 states and 45893 transitions. [2022-11-19 07:01:39,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:39,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:39,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:39,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-19 07:01:39,402 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:39,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:39,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1454123230, now seen corresponding path program 9 times [2022-11-19 07:01:39,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:39,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294824368] [2022-11-19 07:01:39,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:39,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:39,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:39,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:39,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294824368] [2022-11-19 07:01:39,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294824368] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:01:39,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40324427] [2022-11-19 07:01:39,942 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:01:39,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:39,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:39,947 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:39,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-19 07:01:40,149 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:01:40,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:01:40,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:01:40,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:40,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:01:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:40,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40324427] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 07:01:40,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:01:40,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 15 [2022-11-19 07:01:40,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081789459] [2022-11-19 07:01:40,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:40,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:01:40,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:40,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:01:40,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:01:40,518 INFO L87 Difference]: Start difference. First operand 9912 states and 45893 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:41,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:41,132 INFO L93 Difference]: Finished difference Result 16692 states and 72795 transitions. [2022-11-19 07:01:41,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:01:41,133 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:01:41,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:41,197 INFO L225 Difference]: With dead ends: 16692 [2022-11-19 07:01:41,197 INFO L226 Difference]: Without dead ends: 16604 [2022-11-19 07:01:41,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-11-19 07:01:41,198 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 153 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:41,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 12 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:01:41,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16604 states. [2022-11-19 07:01:41,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16604 to 10034. [2022-11-19 07:01:41,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10034 states, 10033 states have (on average 4.641682447921858) internal successors, (46570), 10033 states have internal predecessors, (46570), 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) [2022-11-19 07:01:41,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10034 states to 10034 states and 46570 transitions. [2022-11-19 07:01:41,711 INFO L78 Accepts]: Start accepts. Automaton has 10034 states and 46570 transitions. Word has length 27 [2022-11-19 07:01:41,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:41,711 INFO L495 AbstractCegarLoop]: Abstraction has 10034 states and 46570 transitions. [2022-11-19 07:01:41,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:41,711 INFO L276 IsEmpty]: Start isEmpty. Operand 10034 states and 46570 transitions. [2022-11-19 07:01:41,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:41,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:41,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:41,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-19 07:01:41,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-19 07:01:41,938 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:41,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:41,939 INFO L85 PathProgramCache]: Analyzing trace with hash -788860640, now seen corresponding path program 10 times [2022-11-19 07:01:41,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:41,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826568903] [2022-11-19 07:01:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:41,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:42,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:42,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826568903] [2022-11-19 07:01:42,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826568903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:42,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:42,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:01:42,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989557741] [2022-11-19 07:01:42,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:42,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:01:42,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:42,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:01:42,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:01:42,263 INFO L87 Difference]: Start difference. First operand 10034 states and 46570 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:42,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:42,927 INFO L93 Difference]: Finished difference Result 13658 states and 60672 transitions. [2022-11-19 07:01:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 07:01:42,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:01:42,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:43,004 INFO L225 Difference]: With dead ends: 13658 [2022-11-19 07:01:43,004 INFO L226 Difference]: Without dead ends: 13520 [2022-11-19 07:01:43,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:01:43,005 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 121 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:43,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 13 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:01:43,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13520 states. [2022-11-19 07:01:43,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13520 to 10012. [2022-11-19 07:01:43,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10012 states, 10011 states have (on average 4.639696334032564) internal successors, (46448), 10011 states have internal predecessors, (46448), 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) [2022-11-19 07:01:43,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10012 states to 10012 states and 46448 transitions. [2022-11-19 07:01:43,458 INFO L78 Accepts]: Start accepts. Automaton has 10012 states and 46448 transitions. Word has length 27 [2022-11-19 07:01:43,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:43,458 INFO L495 AbstractCegarLoop]: Abstraction has 10012 states and 46448 transitions. [2022-11-19 07:01:43,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:43,458 INFO L276 IsEmpty]: Start isEmpty. Operand 10012 states and 46448 transitions. [2022-11-19 07:01:43,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:43,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:43,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:43,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-19 07:01:43,480 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:43,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:43,481 INFO L85 PathProgramCache]: Analyzing trace with hash -419722534, now seen corresponding path program 6 times [2022-11-19 07:01:43,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:43,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758171395] [2022-11-19 07:01:43,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:43,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:43,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:43,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:43,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758171395] [2022-11-19 07:01:43,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758171395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:43,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:43,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:01:43,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047446770] [2022-11-19 07:01:43,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:43,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:01:43,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:43,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:01:43,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:01:43,786 INFO L87 Difference]: Start difference. First operand 10012 states and 46448 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:44,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:44,125 INFO L93 Difference]: Finished difference Result 10546 states and 48083 transitions. [2022-11-19 07:01:44,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:01:44,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-19 07:01:44,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:44,179 INFO L225 Difference]: With dead ends: 10546 [2022-11-19 07:01:44,179 INFO L226 Difference]: Without dead ends: 10478 [2022-11-19 07:01:44,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:01:44,180 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 79 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:44,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 6 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:01:44,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10478 states. [2022-11-19 07:01:44,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10478 to 10216. [2022-11-19 07:01:44,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10216 states, 10215 states have (on average 4.618404307391091) internal successors, (47177), 10215 states have internal predecessors, (47177), 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) [2022-11-19 07:01:44,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10216 states to 10216 states and 47177 transitions. [2022-11-19 07:01:44,463 INFO L78 Accepts]: Start accepts. Automaton has 10216 states and 47177 transitions. Word has length 27 [2022-11-19 07:01:44,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:44,463 INFO L495 AbstractCegarLoop]: Abstraction has 10216 states and 47177 transitions. [2022-11-19 07:01:44,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-19 07:01:44,463 INFO L276 IsEmpty]: Start isEmpty. Operand 10216 states and 47177 transitions. [2022-11-19 07:01:44,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:44,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:44,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:44,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-19 07:01:44,490 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:44,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:44,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1490224188, now seen corresponding path program 11 times [2022-11-19 07:01:44,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:44,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068274409] [2022-11-19 07:01:44,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:44,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:44,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:44,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068274409] [2022-11-19 07:01:44,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068274409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:44,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:44,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:01:44,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910827212] [2022-11-19 07:01:44,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:44,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:01:44,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:44,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:01:44,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:01:44,786 INFO L87 Difference]: Start difference. First operand 10216 states and 47177 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-19 07:01:45,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:45,104 INFO L93 Difference]: Finished difference Result 10172 states and 46805 transitions. [2022-11-19 07:01:45,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:01:45,105 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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 27 [2022-11-19 07:01:45,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:45,148 INFO L225 Difference]: With dead ends: 10172 [2022-11-19 07:01:45,148 INFO L226 Difference]: Without dead ends: 10084 [2022-11-19 07:01:45,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:01:45,149 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 80 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:45,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 6 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:01:45,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10084 states. [2022-11-19 07:01:45,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10084 to 10004. [2022-11-19 07:01:45,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10004 states, 10003 states have (on average 4.6397080875737275) internal successors, (46411), 10003 states have internal predecessors, (46411), 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) [2022-11-19 07:01:45,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10004 states to 10004 states and 46411 transitions. [2022-11-19 07:01:45,430 INFO L78 Accepts]: Start accepts. Automaton has 10004 states and 46411 transitions. Word has length 27 [2022-11-19 07:01:45,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:45,431 INFO L495 AbstractCegarLoop]: Abstraction has 10004 states and 46411 transitions. [2022-11-19 07:01:45,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-19 07:01:45,431 INFO L276 IsEmpty]: Start isEmpty. Operand 10004 states and 46411 transitions. [2022-11-19 07:01:45,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:45,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:45,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:45,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-19 07:01:45,462 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:45,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:45,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1716498476, now seen corresponding path program 7 times [2022-11-19 07:01:45,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:45,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420327493] [2022-11-19 07:01:45,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:45,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:45,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:45,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420327493] [2022-11-19 07:01:45,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420327493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:45,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:45,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:01:45,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397179262] [2022-11-19 07:01:45,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:45,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:01:45,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:45,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:01:45,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:01:45,938 INFO L87 Difference]: Start difference. First operand 10004 states and 46411 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-19 07:01:46,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:46,251 INFO L93 Difference]: Finished difference Result 9898 states and 46013 transitions. [2022-11-19 07:01:46,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:01:46,251 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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 27 [2022-11-19 07:01:46,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:46,294 INFO L225 Difference]: With dead ends: 9898 [2022-11-19 07:01:46,294 INFO L226 Difference]: Without dead ends: 9856 [2022-11-19 07:01:46,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:01:46,296 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 45 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:46,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 6 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:01:46,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9856 states. [2022-11-19 07:01:46,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9856 to 9856. [2022-11-19 07:01:46,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9856 states, 9855 states have (on average 4.66027397260274) internal successors, (45927), 9855 states have internal predecessors, (45927), 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) [2022-11-19 07:01:46,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9856 states to 9856 states and 45927 transitions. [2022-11-19 07:01:46,591 INFO L78 Accepts]: Start accepts. Automaton has 9856 states and 45927 transitions. Word has length 27 [2022-11-19 07:01:46,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:46,591 INFO L495 AbstractCegarLoop]: Abstraction has 9856 states and 45927 transitions. [2022-11-19 07:01:46,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-19 07:01:46,591 INFO L276 IsEmpty]: Start isEmpty. Operand 9856 states and 45927 transitions. [2022-11-19 07:01:46,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:46,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:46,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:46,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-19 07:01:46,618 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:46,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:46,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1632310846, now seen corresponding path program 7 times [2022-11-19 07:01:46,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:46,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389504127] [2022-11-19 07:01:46,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:46,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:47,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:47,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389504127] [2022-11-19 07:01:47,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389504127] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:01:47,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640593384] [2022-11-19 07:01:47,014 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:01:47,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:47,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:47,015 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:47,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-19 07:01:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:47,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 07:01:47,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:47,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:47,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:01:47,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:47,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640593384] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:01:47,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [536658830] [2022-11-19 07:01:47,657 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:01:47,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:01:47,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7] total 14 [2022-11-19 07:01:47,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474238962] [2022-11-19 07:01:47,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:01:47,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-19 07:01:47,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:47,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-19 07:01:47,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:01:47,661 INFO L87 Difference]: Start difference. First operand 9856 states and 45927 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 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) [2022-11-19 07:01:53,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:53,964 INFO L93 Difference]: Finished difference Result 36002 states and 155699 transitions. [2022-11-19 07:01:53,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-11-19 07:01:53,965 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 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 27 [2022-11-19 07:01:53,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:54,119 INFO L225 Difference]: With dead ends: 36002 [2022-11-19 07:01:54,119 INFO L226 Difference]: Without dead ends: 34268 [2022-11-19 07:01:54,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2768 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1266, Invalid=7106, Unknown=0, NotChecked=0, Total=8372 [2022-11-19 07:01:54,124 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 494 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 4366 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 4426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 4366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:54,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 49 Invalid, 4426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 4366 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-19 07:01:54,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34268 states. [2022-11-19 07:01:54,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34268 to 11622. [2022-11-19 07:01:54,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11622 states, 11621 states have (on average 4.677652525600206) internal successors, (54359), 11621 states have internal predecessors, (54359), 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) [2022-11-19 07:01:55,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11622 states to 11622 states and 54359 transitions. [2022-11-19 07:01:55,004 INFO L78 Accepts]: Start accepts. Automaton has 11622 states and 54359 transitions. Word has length 27 [2022-11-19 07:01:55,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:55,005 INFO L495 AbstractCegarLoop]: Abstraction has 11622 states and 54359 transitions. [2022-11-19 07:01:55,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 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) [2022-11-19 07:01:55,005 INFO L276 IsEmpty]: Start isEmpty. Operand 11622 states and 54359 transitions. [2022-11-19 07:01:55,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:55,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:55,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:55,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-19 07:01:55,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:55,236 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:55,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:55,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1970221094, now seen corresponding path program 8 times [2022-11-19 07:01:55,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:55,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514482452] [2022-11-19 07:01:55,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:55,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:55,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:55,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:55,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514482452] [2022-11-19 07:01:55,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514482452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:55,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:55,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:01:55,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842415615] [2022-11-19 07:01:55,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:55,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:01:55,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:55,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:01:55,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:01:55,604 INFO L87 Difference]: Start difference. First operand 11622 states and 54359 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-19 07:01:56,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:56,123 INFO L93 Difference]: Finished difference Result 15344 states and 69693 transitions. [2022-11-19 07:01:56,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:01:56,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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 27 [2022-11-19 07:01:56,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:56,186 INFO L225 Difference]: With dead ends: 15344 [2022-11-19 07:01:56,186 INFO L226 Difference]: Without dead ends: 15256 [2022-11-19 07:01:56,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:01:56,187 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 92 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:56,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 21 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:01:56,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15256 states. [2022-11-19 07:01:56,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15256 to 11442. [2022-11-19 07:01:56,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11442 states, 11441 states have (on average 4.668210820732454) internal successors, (53409), 11441 states have internal predecessors, (53409), 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) [2022-11-19 07:01:56,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11442 states to 11442 states and 53409 transitions. [2022-11-19 07:01:56,556 INFO L78 Accepts]: Start accepts. Automaton has 11442 states and 53409 transitions. Word has length 27 [2022-11-19 07:01:56,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:56,556 INFO L495 AbstractCegarLoop]: Abstraction has 11442 states and 53409 transitions. [2022-11-19 07:01:56,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-19 07:01:56,557 INFO L276 IsEmpty]: Start isEmpty. Operand 11442 states and 53409 transitions. [2022-11-19 07:01:56,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:01:56,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:56,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:56,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-19 07:01:56,586 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:56,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:56,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1649295750, now seen corresponding path program 12 times [2022-11-19 07:01:56,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:56,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657293346] [2022-11-19 07:01:56,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:56,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:56,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:56,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:56,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657293346] [2022-11-19 07:01:56,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657293346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:56,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:56,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:01:56,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363235742] [2022-11-19 07:01:56,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:56,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:01:56,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:56,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:01:56,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:01:56,954 INFO L87 Difference]: Start difference. First operand 11442 states and 53409 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-19 07:01:57,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:57,591 INFO L93 Difference]: Finished difference Result 18500 states and 83379 transitions. [2022-11-19 07:01:57,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:01:57,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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 27 [2022-11-19 07:01:57,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:57,668 INFO L225 Difference]: With dead ends: 18500 [2022-11-19 07:01:57,668 INFO L226 Difference]: Without dead ends: 18410 [2022-11-19 07:01:57,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:01:57,669 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 123 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:57,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 21 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:01:57,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18410 states. [2022-11-19 07:01:58,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18410 to 11320. [2022-11-19 07:01:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11320 states, 11319 states have (on average 4.6728509585652445) internal successors, (52892), 11319 states have internal predecessors, (52892), 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) [2022-11-19 07:01:58,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11320 states to 11320 states and 52892 transitions. [2022-11-19 07:01:58,270 INFO L78 Accepts]: Start accepts. Automaton has 11320 states and 52892 transitions. Word has length 27 [2022-11-19 07:01:58,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:58,270 INFO L495 AbstractCegarLoop]: Abstraction has 11320 states and 52892 transitions. [2022-11-19 07:01:58,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-19 07:01:58,270 INFO L276 IsEmpty]: Start isEmpty. Operand 11320 states and 52892 transitions. [2022-11-19 07:01:58,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 07:01:58,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:58,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:58,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-19 07:01:58,309 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:01:58,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:58,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1121965839, now seen corresponding path program 1 times [2022-11-19 07:01:58,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:58,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525121326] [2022-11-19 07:01:58,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:58,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:58,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:58,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525121326] [2022-11-19 07:01:58,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525121326] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:01:58,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752107339] [2022-11-19 07:01:58,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:58,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:58,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:58,963 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:58,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-19 07:01:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:59,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-19 07:01:59,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:02:00,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:02:00,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:02:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:02:01,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752107339] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:02:01,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1463945268] [2022-11-19 07:02:01,619 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:02:01,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:02:01,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 13 [2022-11-19 07:02:01,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423354399] [2022-11-19 07:02:01,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:02:01,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-19 07:02:01,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:02:01,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-19 07:02:01,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:02:01,620 INFO L87 Difference]: Start difference. First operand 11320 states and 52892 transitions. Second operand has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:02:05,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:02:14,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:02:15,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:02:15,005 INFO L93 Difference]: Finished difference Result 22648 states and 96667 transitions. [2022-11-19 07:02:15,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-19 07:02:15,006 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 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 29 [2022-11-19 07:02:15,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:02:15,078 INFO L225 Difference]: With dead ends: 22648 [2022-11-19 07:02:15,078 INFO L226 Difference]: Without dead ends: 20182 [2022-11-19 07:02:15,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=398, Invalid=1162, Unknown=0, NotChecked=0, Total=1560 [2022-11-19 07:02:15,079 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 367 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1633 mSolverCounterSat, 47 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1633 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:15,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 9 Invalid, 1682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1633 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2022-11-19 07:02:15,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20182 states. [2022-11-19 07:02:15,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20182 to 12242. [2022-11-19 07:02:15,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12242 states, 12241 states have (on average 4.663426190670696) internal successors, (57085), 12241 states have internal predecessors, (57085), 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) [2022-11-19 07:02:15,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12242 states to 12242 states and 57085 transitions. [2022-11-19 07:02:15,517 INFO L78 Accepts]: Start accepts. Automaton has 12242 states and 57085 transitions. Word has length 29 [2022-11-19 07:02:15,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:02:15,517 INFO L495 AbstractCegarLoop]: Abstraction has 12242 states and 57085 transitions. [2022-11-19 07:02:15,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 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) [2022-11-19 07:02:15,517 INFO L276 IsEmpty]: Start isEmpty. Operand 12242 states and 57085 transitions. [2022-11-19 07:02:15,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 07:02:15,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:02:15,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:02:15,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-19 07:02:15,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:15,747 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:02:15,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:02:15,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1546226009, now seen corresponding path program 1 times [2022-11-19 07:02:15,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:02:15,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283852463] [2022-11-19 07:02:15,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:15,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:02:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:16,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:02:16,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:02:16,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283852463] [2022-11-19 07:02:16,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283852463] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:02:16,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508837511] [2022-11-19 07:02:16,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:16,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:16,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:02:16,275 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:02:16,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-19 07:02:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:16,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-19 07:02:16,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:02:16,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:02:16,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:02:17,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:02:17,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508837511] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:02:17,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [961179506] [2022-11-19 07:02:17,398 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:02:17,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:02:17,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-11-19 07:02:17,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101355610] [2022-11-19 07:02:17,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:02:17,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-19 07:02:17,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:02:17,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-19 07:02:17,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2022-11-19 07:02:17,402 INFO L87 Difference]: Start difference. First operand 12242 states and 57085 transitions. Second operand has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 22 states have internal predecessors, (75), 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) [2022-11-19 07:02:53,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:02:53,982 INFO L93 Difference]: Finished difference Result 62376 states and 255060 transitions. [2022-11-19 07:02:53,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-19 07:02:53,983 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 22 states have internal predecessors, (75), 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 29 [2022-11-19 07:02:53,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:02:54,216 INFO L225 Difference]: With dead ends: 62376 [2022-11-19 07:02:54,216 INFO L226 Difference]: Without dead ends: 58982 [2022-11-19 07:02:54,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 391 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68873 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=18781, Invalid=135275, Unknown=0, NotChecked=0, Total=154056 [2022-11-19 07:02:54,231 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2042 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 10566 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 10975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 10566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:54,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2042 Valid, 32 Invalid, 10975 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [409 Valid, 10566 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-11-19 07:02:54,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58982 states. [2022-11-19 07:02:55,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58982 to 21440. [2022-11-19 07:02:55,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21440 states, 21439 states have (on average 4.708661784598163) internal successors, (100949), 21439 states have internal predecessors, (100949), 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) [2022-11-19 07:02:55,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21440 states to 21440 states and 100949 transitions. [2022-11-19 07:02:55,725 INFO L78 Accepts]: Start accepts. Automaton has 21440 states and 100949 transitions. Word has length 29 [2022-11-19 07:02:55,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:02:55,725 INFO L495 AbstractCegarLoop]: Abstraction has 21440 states and 100949 transitions. [2022-11-19 07:02:55,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 22 states have internal predecessors, (75), 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) [2022-11-19 07:02:55,725 INFO L276 IsEmpty]: Start isEmpty. Operand 21440 states and 100949 transitions. [2022-11-19 07:02:55,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 07:02:55,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:02:55,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:02:55,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-19 07:02:55,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-11-19 07:02:55,985 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:02:55,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:02:55,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1124932539, now seen corresponding path program 2 times [2022-11-19 07:02:55,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:02:55,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311043029] [2022-11-19 07:02:55,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:55,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:02:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:56,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:02:56,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:02:56,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311043029] [2022-11-19 07:02:56,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311043029] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:02:56,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330833309] [2022-11-19 07:02:56,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:02:56,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:56,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:02:56,550 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:02:56,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-19 07:02:56,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 07:02:56,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:02:56,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-19 07:02:56,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:02:59,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:02:59,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:03:00,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:03:00,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330833309] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:03:00,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [506657756] [2022-11-19 07:03:00,178 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:03:00,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:03:00,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2022-11-19 07:03:00,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842896343] [2022-11-19 07:03:00,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:03:00,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 07:03:00,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:00,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 07:03:00,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2022-11-19 07:03:00,181 INFO L87 Difference]: Start difference. First operand 21440 states and 100949 transitions. Second operand has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 23 states have internal predecessors, (65), 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) [2022-11-19 07:03:10,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:10,777 INFO L93 Difference]: Finished difference Result 68258 states and 294552 transitions. [2022-11-19 07:03:10,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-11-19 07:03:10,777 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 23 states have internal predecessors, (65), 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 29 [2022-11-19 07:03:10,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:11,279 INFO L225 Difference]: With dead ends: 68258 [2022-11-19 07:03:11,279 INFO L226 Difference]: Without dead ends: 67420 [2022-11-19 07:03:11,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4565 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=2210, Invalid=10900, Unknown=0, NotChecked=0, Total=13110 [2022-11-19 07:03:11,280 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1866 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4459 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1866 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 4699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 4459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:11,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1866 Valid, 19 Invalid, 4699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 4459 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-19 07:03:11,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67420 states. [2022-11-19 07:03:13,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67420 to 26902. [2022-11-19 07:03:13,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26902 states, 26901 states have (on average 4.8564365636965166) internal successors, (130643), 26901 states have internal predecessors, (130643), 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) [2022-11-19 07:03:13,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26902 states to 26902 states and 130643 transitions. [2022-11-19 07:03:13,478 INFO L78 Accepts]: Start accepts. Automaton has 26902 states and 130643 transitions. Word has length 29 [2022-11-19 07:03:13,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:13,478 INFO L495 AbstractCegarLoop]: Abstraction has 26902 states and 130643 transitions. [2022-11-19 07:03:13,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 23 states have internal predecessors, (65), 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) [2022-11-19 07:03:13,479 INFO L276 IsEmpty]: Start isEmpty. Operand 26902 states and 130643 transitions. [2022-11-19 07:03:13,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 07:03:13,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:13,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:03:13,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-19 07:03:13,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-11-19 07:03:13,768 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:03:13,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:13,769 INFO L85 PathProgramCache]: Analyzing trace with hash -917639105, now seen corresponding path program 2 times [2022-11-19 07:03:13,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:13,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689216801] [2022-11-19 07:03:13,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:13,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:14,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:03:14,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:14,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689216801] [2022-11-19 07:03:14,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689216801] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:03:14,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970408563] [2022-11-19 07:03:14,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:03:14,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:03:14,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:03:14,639 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:03:14,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-19 07:03:15,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 07:03:15,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:03:15,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 07:03:15,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:03:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:03:16,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:03:16,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:03:16,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970408563] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:03:16,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1960109687] [2022-11-19 07:03:16,597 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:03:16,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:03:16,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2022-11-19 07:03:16,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882508544] [2022-11-19 07:03:16,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:03:16,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:03:16,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:16,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:03:16,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:03:16,601 INFO L87 Difference]: Start difference. First operand 26902 states and 130643 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2022-11-19 07:03:17,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:17,141 INFO L93 Difference]: Finished difference Result 27763 states and 134580 transitions. [2022-11-19 07:03:17,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:03:17,142 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 29 [2022-11-19 07:03:17,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:17,284 INFO L225 Difference]: With dead ends: 27763 [2022-11-19 07:03:17,284 INFO L226 Difference]: Without dead ends: 27674 [2022-11-19 07:03:17,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:03:17,285 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:17,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 19 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:03:17,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27674 states. [2022-11-19 07:03:18,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27674 to 27132. [2022-11-19 07:03:18,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27132 states, 27131 states have (on average 4.856511002174634) internal successors, (131762), 27131 states have internal predecessors, (131762), 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) [2022-11-19 07:03:18,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27132 states to 27132 states and 131762 transitions. [2022-11-19 07:03:18,500 INFO L78 Accepts]: Start accepts. Automaton has 27132 states and 131762 transitions. Word has length 29 [2022-11-19 07:03:18,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:18,500 INFO L495 AbstractCegarLoop]: Abstraction has 27132 states and 131762 transitions. [2022-11-19 07:03:18,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2022-11-19 07:03:18,500 INFO L276 IsEmpty]: Start isEmpty. Operand 27132 states and 131762 transitions. [2022-11-19 07:03:18,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 07:03:18,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:18,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:03:18,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-19 07:03:18,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-11-19 07:03:18,773 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:03:18,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:18,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1954126593, now seen corresponding path program 3 times [2022-11-19 07:03:18,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:18,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561694649] [2022-11-19 07:03:18,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:18,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:03:19,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:19,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561694649] [2022-11-19 07:03:19,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561694649] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:03:19,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123561704] [2022-11-19 07:03:19,419 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:03:19,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:03:19,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:03:19,420 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:03:19,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-19 07:03:19,576 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:03:19,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:03:19,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-19 07:03:19,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:03:20,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:03:20,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:03:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:03:20,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123561704] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:03:20,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1309430934] [2022-11-19 07:03:20,575 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:03:20,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:03:20,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 22 [2022-11-19 07:03:20,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502401648] [2022-11-19 07:03:20,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:03:20,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-19 07:03:20,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:20,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-19 07:03:20,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-11-19 07:03:20,578 INFO L87 Difference]: Start difference. First operand 27132 states and 131762 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 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) [2022-11-19 07:03:32,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:32,979 INFO L93 Difference]: Finished difference Result 69416 states and 308678 transitions. [2022-11-19 07:03:32,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-11-19 07:03:32,979 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 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 29 [2022-11-19 07:03:32,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:33,289 INFO L225 Difference]: With dead ends: 69416 [2022-11-19 07:03:33,289 INFO L226 Difference]: Without dead ends: 68316 [2022-11-19 07:03:33,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10242 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=3582, Invalid=22824, Unknown=0, NotChecked=0, Total=26406 [2022-11-19 07:03:33,291 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1139 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4776 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 4961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 4776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:33,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 78 Invalid, 4961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 4776 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-19 07:03:33,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68316 states. [2022-11-19 07:03:34,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68316 to 30218. [2022-11-19 07:03:34,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30218 states, 30217 states have (on average 4.917463679385776) internal successors, (148591), 30217 states have internal predecessors, (148591), 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) [2022-11-19 07:03:35,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30218 states to 30218 states and 148591 transitions. [2022-11-19 07:03:35,078 INFO L78 Accepts]: Start accepts. Automaton has 30218 states and 148591 transitions. Word has length 29 [2022-11-19 07:03:35,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:35,079 INFO L495 AbstractCegarLoop]: Abstraction has 30218 states and 148591 transitions. [2022-11-19 07:03:35,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 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) [2022-11-19 07:03:35,079 INFO L276 IsEmpty]: Start isEmpty. Operand 30218 states and 148591 transitions. [2022-11-19 07:03:35,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 07:03:35,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:35,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:03:35,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-19 07:03:35,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-11-19 07:03:35,377 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:03:35,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:35,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1375182921, now seen corresponding path program 4 times [2022-11-19 07:03:35,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:35,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559277467] [2022-11-19 07:03:35,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:35,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:36,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:03:36,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:36,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559277467] [2022-11-19 07:03:36,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559277467] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:03:36,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866872475] [2022-11-19 07:03:36,197 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:03:36,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:03:36,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:03:36,198 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:03:36,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-19 07:03:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:36,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-19 07:03:36,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:03:36,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:03:36,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:03:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:03:37,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866872475] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:03:37,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1857956281] [2022-11-19 07:03:37,284 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:03:37,285 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:03:37,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-11-19 07:03:37,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837439674] [2022-11-19 07:03:37,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:03:37,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-19 07:03:37,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:37,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-19 07:03:37,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2022-11-19 07:03:37,286 INFO L87 Difference]: Start difference. First operand 30218 states and 148591 transitions. Second operand has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 states have internal predecessors, (69), 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) [2022-11-19 07:04:12,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:12,813 INFO L93 Difference]: Finished difference Result 93748 states and 416249 transitions. [2022-11-19 07:04:12,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 370 states. [2022-11-19 07:04:12,814 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 states have internal predecessors, (69), 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 29 [2022-11-19 07:04:12,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:13,520 INFO L225 Difference]: With dead ends: 93748 [2022-11-19 07:04:13,533 INFO L226 Difference]: Without dead ends: 93100 [2022-11-19 07:04:13,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 371 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61903 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=19449, Invalid=119307, Unknown=0, NotChecked=0, Total=138756 [2022-11-19 07:04:13,555 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1515 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 10355 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 10552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 10355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:13,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 21 Invalid, 10552 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [197 Valid, 10355 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-19 07:04:13,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93100 states. [2022-11-19 07:04:15,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93100 to 33312. [2022-11-19 07:04:15,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33312 states, 33311 states have (on average 4.999879919546096) internal successors, (166551), 33311 states have internal predecessors, (166551), 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) [2022-11-19 07:04:15,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33312 states to 33312 states and 166551 transitions. [2022-11-19 07:04:15,865 INFO L78 Accepts]: Start accepts. Automaton has 33312 states and 166551 transitions. Word has length 29 [2022-11-19 07:04:15,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:15,865 INFO L495 AbstractCegarLoop]: Abstraction has 33312 states and 166551 transitions. [2022-11-19 07:04:15,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 states have internal predecessors, (69), 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) [2022-11-19 07:04:15,865 INFO L276 IsEmpty]: Start isEmpty. Operand 33312 states and 166551 transitions. [2022-11-19 07:04:16,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 07:04:16,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:16,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:04:16,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-19 07:04:16,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:04:16,400 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:04:16,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:16,400 INFO L85 PathProgramCache]: Analyzing trace with hash 617973243, now seen corresponding path program 5 times [2022-11-19 07:04:16,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:16,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187551389] [2022-11-19 07:04:16,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:16,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:16,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:16,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:16,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187551389] [2022-11-19 07:04:16,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187551389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:16,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:16,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:04:16,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646990290] [2022-11-19 07:04:16,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:16,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:04:16,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:16,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:04:16,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:04:16,874 INFO L87 Difference]: Start difference. First operand 33312 states and 166551 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 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) [2022-11-19 07:04:18,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:18,385 INFO L93 Difference]: Finished difference Result 43708 states and 207718 transitions. [2022-11-19 07:04:18,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-19 07:04:18,385 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 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 29 [2022-11-19 07:04:18,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:18,555 INFO L225 Difference]: With dead ends: 43708 [2022-11-19 07:04:18,555 INFO L226 Difference]: Without dead ends: 43686 [2022-11-19 07:04:18,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-11-19 07:04:18,555 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 185 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:18,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 5 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:04:18,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43686 states. [2022-11-19 07:04:19,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43686 to 33862. [2022-11-19 07:04:19,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33862 states, 33861 states have (on average 5.007855645137473) internal successors, (169571), 33861 states have internal predecessors, (169571), 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) [2022-11-19 07:04:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33862 states to 33862 states and 169571 transitions. [2022-11-19 07:04:19,909 INFO L78 Accepts]: Start accepts. Automaton has 33862 states and 169571 transitions. Word has length 29 [2022-11-19 07:04:19,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:19,909 INFO L495 AbstractCegarLoop]: Abstraction has 33862 states and 169571 transitions. [2022-11-19 07:04:19,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 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) [2022-11-19 07:04:19,909 INFO L276 IsEmpty]: Start isEmpty. Operand 33862 states and 169571 transitions. [2022-11-19 07:04:19,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 07:04:19,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:19,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:04:19,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-19 07:04:19,993 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:04:19,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:19,994 INFO L85 PathProgramCache]: Analyzing trace with hash -750514587, now seen corresponding path program 6 times [2022-11-19 07:04:19,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:19,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922392737] [2022-11-19 07:04:19,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:19,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:20,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:20,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:20,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922392737] [2022-11-19 07:04:20,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922392737] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:04:20,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55270970] [2022-11-19 07:04:20,757 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:04:20,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:04:20,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:04:20,758 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:04:20,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-19 07:04:20,951 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:04:20,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:04:20,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-19 07:04:20,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:04:21,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:21,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:04:22,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:22,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55270970] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:04:22,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1057489907] [2022-11-19 07:04:22,105 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:04:22,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:04:22,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2022-11-19 07:04:22,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057425175] [2022-11-19 07:04:22,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:04:22,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-19 07:04:22,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:22,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-19 07:04:22,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-11-19 07:04:22,108 INFO L87 Difference]: Start difference. First operand 33862 states and 169571 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 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) [2022-11-19 07:05:02,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:02,986 INFO L93 Difference]: Finished difference Result 111332 states and 478871 transitions. [2022-11-19 07:05:02,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 438 states. [2022-11-19 07:05:02,987 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 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 29 [2022-11-19 07:05:02,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:03,718 INFO L225 Difference]: With dead ends: 111332 [2022-11-19 07:05:03,719 INFO L226 Difference]: Without dead ends: 109100 [2022-11-19 07:05:03,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 440 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87676 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=20220, Invalid=174702, Unknown=0, NotChecked=0, Total=194922 [2022-11-19 07:05:03,731 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1553 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 13067 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 13335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 13067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:03,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 31 Invalid, 13335 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [268 Valid, 13067 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2022-11-19 07:05:03,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109100 states. [2022-11-19 07:05:06,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109100 to 40648. [2022-11-19 07:05:06,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40648 states, 40647 states have (on average 5.050360420203213) internal successors, (205282), 40647 states have internal predecessors, (205282), 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) [2022-11-19 07:05:07,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40648 states to 40648 states and 205282 transitions. [2022-11-19 07:05:07,195 INFO L78 Accepts]: Start accepts. Automaton has 40648 states and 205282 transitions. Word has length 29 [2022-11-19 07:05:07,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:07,195 INFO L495 AbstractCegarLoop]: Abstraction has 40648 states and 205282 transitions. [2022-11-19 07:05:07,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 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) [2022-11-19 07:05:07,195 INFO L276 IsEmpty]: Start isEmpty. Operand 40648 states and 205282 transitions. [2022-11-19 07:05:07,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 07:05:07,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:07,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:05:07,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-19 07:05:07,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:07,503 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:05:07,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:07,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1324003441, now seen corresponding path program 1 times [2022-11-19 07:05:07,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:05:07,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254179657] [2022-11-19 07:05:07,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:07,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:05:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:08,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:05:08,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:05:08,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254179657] [2022-11-19 07:05:08,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254179657] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:05:08,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019858472] [2022-11-19 07:05:08,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:08,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:08,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:05:08,093 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:05:08,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-19 07:05:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:08,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-19 07:05:08,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:05:09,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:05:09,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:05:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:05:10,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019858472] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:05:10,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2079044224] [2022-11-19 07:05:10,724 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:05:10,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:05:10,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-11-19 07:05:10,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823044231] [2022-11-19 07:05:10,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:05:10,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-19 07:05:10,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:05:10,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-19 07:05:10,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-19 07:05:10,725 INFO L87 Difference]: Start difference. First operand 40648 states and 205282 transitions. Second operand has 18 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:05:17,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:19,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:19,066 INFO L93 Difference]: Finished difference Result 51513 states and 251109 transitions. [2022-11-19 07:05:19,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-19 07:05:19,067 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 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 29 [2022-11-19 07:05:19,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:19,270 INFO L225 Difference]: With dead ends: 51513 [2022-11-19 07:05:19,270 INFO L226 Difference]: Without dead ends: 50722 [2022-11-19 07:05:19,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 45 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=599, Invalid=1753, Unknown=0, NotChecked=0, Total=2352 [2022-11-19 07:05:19,270 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 518 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 2716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 541 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:19,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 37 Invalid, 2716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2094 Invalid, 0 Unknown, 541 Unchecked, 4.9s Time] [2022-11-19 07:05:19,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50722 states. [2022-11-19 07:05:20,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50722 to 42344. [2022-11-19 07:05:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42344 states, 42343 states have (on average 5.0370072975462294) internal successors, (213282), 42343 states have internal predecessors, (213282), 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) [2022-11-19 07:05:20,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42344 states to 42344 states and 213282 transitions. [2022-11-19 07:05:20,824 INFO L78 Accepts]: Start accepts. Automaton has 42344 states and 213282 transitions. Word has length 29 [2022-11-19 07:05:20,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:20,825 INFO L495 AbstractCegarLoop]: Abstraction has 42344 states and 213282 transitions. [2022-11-19 07:05:20,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 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) [2022-11-19 07:05:20,825 INFO L276 IsEmpty]: Start isEmpty. Operand 42344 states and 213282 transitions. [2022-11-19 07:05:21,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 07:05:21,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:21,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:05:21,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-19 07:05:21,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:21,438 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:05:21,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:21,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1091194037, now seen corresponding path program 1 times [2022-11-19 07:05:21,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:05:21,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776318100] [2022-11-19 07:05:21,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:21,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:05:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:21,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:05:21,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:05:21,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776318100] [2022-11-19 07:05:21,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776318100] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:05:21,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611417384] [2022-11-19 07:05:21,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:21,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:21,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:05:21,869 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:05:21,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-19 07:05:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:22,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-19 07:05:22,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:05:22,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:05:22,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:05:22,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:05:22,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611417384] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:05:22,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1669295961] [2022-11-19 07:05:22,695 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:05:22,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:05:22,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-11-19 07:05:22,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081307047] [2022-11-19 07:05:22,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:05:22,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-19 07:05:22,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:05:22,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-19 07:05:22,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-11-19 07:05:22,698 INFO L87 Difference]: Start difference. First operand 42344 states and 213282 transitions. Second operand has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 22 states have internal predecessors, (71), 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) [2022-11-19 07:05:42,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:42,137 INFO L93 Difference]: Finished difference Result 82690 states and 379782 transitions. [2022-11-19 07:05:42,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2022-11-19 07:05:42,138 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 22 states have internal predecessors, (71), 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 29 [2022-11-19 07:05:42,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:42,532 INFO L225 Difference]: With dead ends: 82690 [2022-11-19 07:05:42,532 INFO L226 Difference]: Without dead ends: 82040 [2022-11-19 07:05:42,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24692 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=8318, Invalid=50004, Unknown=0, NotChecked=0, Total=58322 [2022-11-19 07:05:42,535 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1458 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 8611 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 8772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 8611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:42,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 33 Invalid, 8772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 8611 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-19 07:05:42,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82040 states. [2022-11-19 07:05:45,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82040 to 47540. [2022-11-19 07:05:45,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47540 states, 47539 states have (on average 5.039251982582721) internal successors, (239561), 47539 states have internal predecessors, (239561), 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) [2022-11-19 07:05:45,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47540 states to 47540 states and 239561 transitions. [2022-11-19 07:05:45,297 INFO L78 Accepts]: Start accepts. Automaton has 47540 states and 239561 transitions. Word has length 29 [2022-11-19 07:05:45,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:45,297 INFO L495 AbstractCegarLoop]: Abstraction has 47540 states and 239561 transitions. [2022-11-19 07:05:45,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 22 states have internal predecessors, (71), 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) [2022-11-19 07:05:45,297 INFO L276 IsEmpty]: Start isEmpty. Operand 47540 states and 239561 transitions. [2022-11-19 07:05:45,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 07:05:45,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:45,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:05:45,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-19 07:05:45,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:45,633 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:05:45,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:45,634 INFO L85 PathProgramCache]: Analyzing trace with hash -939480373, now seen corresponding path program 2 times [2022-11-19 07:05:45,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:05:45,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626269860] [2022-11-19 07:05:45,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:45,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:05:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:46,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:05:46,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:05:46,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626269860] [2022-11-19 07:05:46,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626269860] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:05:46,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035441659] [2022-11-19 07:05:46,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:05:46,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:46,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:05:46,413 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:05:46,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-19 07:05:46,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 07:05:46,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:05:46,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-19 07:05:46,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:05:47,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:05:47,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:05:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:05:47,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035441659] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:05:47,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [308097794] [2022-11-19 07:05:47,525 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:05:47,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:05:47,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 26 [2022-11-19 07:05:47,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687384175] [2022-11-19 07:05:47,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:05:47,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-19 07:05:47,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:05:47,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-19 07:05:47,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-11-19 07:05:47,528 INFO L87 Difference]: Start difference. First operand 47540 states and 239561 transitions. Second operand has 27 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 26 states have internal predecessors, (64), 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) [2022-11-19 07:05:58,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:58,447 INFO L93 Difference]: Finished difference Result 95316 states and 431095 transitions. [2022-11-19 07:05:58,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-11-19 07:05:58,447 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 26 states have internal predecessors, (64), 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 29 [2022-11-19 07:05:58,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:58,941 INFO L225 Difference]: With dead ends: 95316 [2022-11-19 07:05:58,941 INFO L226 Difference]: Without dead ends: 94724 [2022-11-19 07:05:58,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6985 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=3219, Invalid=14871, Unknown=0, NotChecked=0, Total=18090 [2022-11-19 07:05:58,943 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1502 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 5826 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 6062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 5826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:58,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 17 Invalid, 6062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 5826 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-19 07:05:59,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94724 states. [2022-11-19 07:06:02,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94724 to 50988. [2022-11-19 07:06:02,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50988 states, 50987 states have (on average 5.05103261615706) internal successors, (257537), 50987 states have internal predecessors, (257537), 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) [2022-11-19 07:06:02,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50988 states to 50988 states and 257537 transitions. [2022-11-19 07:06:02,698 INFO L78 Accepts]: Start accepts. Automaton has 50988 states and 257537 transitions. Word has length 29 [2022-11-19 07:06:02,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:02,698 INFO L495 AbstractCegarLoop]: Abstraction has 50988 states and 257537 transitions. [2022-11-19 07:06:02,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 26 states have internal predecessors, (64), 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) [2022-11-19 07:06:02,698 INFO L276 IsEmpty]: Start isEmpty. Operand 50988 states and 257537 transitions. [2022-11-19 07:06:02,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 07:06:02,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:02,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:02,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:03,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-11-19 07:06:03,047 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:06:03,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:03,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2006645991, now seen corresponding path program 3 times [2022-11-19 07:06:03,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:06:03,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752346126] [2022-11-19 07:06:03,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:03,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:06:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:03,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:06:03,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:06:03,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752346126] [2022-11-19 07:06:03,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752346126] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:06:03,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624679562] [2022-11-19 07:06:03,987 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:06:03,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:06:03,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:06:03,988 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:06:03,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-19 07:06:04,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:06:04,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:06:04,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-19 07:06:04,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:04,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:06:04,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:06:05,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:06:05,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624679562] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:06:05,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [34906009] [2022-11-19 07:06:05,088 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:06:05,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:06:05,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2022-11-19 07:06:05,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391078537] [2022-11-19 07:06:05,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:06:05,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 07:06:05,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:06:05,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 07:06:05,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2022-11-19 07:06:05,090 INFO L87 Difference]: Start difference. First operand 50988 states and 257537 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 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) [2022-11-19 07:06:47,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:47,218 INFO L93 Difference]: Finished difference Result 154260 states and 676496 transitions. [2022-11-19 07:06:47,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 412 states. [2022-11-19 07:06:47,219 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 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 29 [2022-11-19 07:06:47,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:48,078 INFO L225 Difference]: With dead ends: 154260 [2022-11-19 07:06:48,078 INFO L226 Difference]: Without dead ends: 152270 [2022-11-19 07:06:48,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74148 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=18321, Invalid=151011, Unknown=0, NotChecked=0, Total=169332 [2022-11-19 07:06:48,087 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1794 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 16467 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1794 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 16766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 16467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:48,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1794 Valid, 29 Invalid, 16766 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [299 Valid, 16467 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2022-11-19 07:06:48,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152270 states. [2022-11-19 07:06:54,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152270 to 66550. [2022-11-19 07:06:54,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66550 states, 66549 states have (on average 5.044824114562203) internal successors, (335728), 66549 states have internal predecessors, (335728), 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) [2022-11-19 07:06:54,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66550 states to 66550 states and 335728 transitions. [2022-11-19 07:06:54,539 INFO L78 Accepts]: Start accepts. Automaton has 66550 states and 335728 transitions. Word has length 29 [2022-11-19 07:06:54,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:54,539 INFO L495 AbstractCegarLoop]: Abstraction has 66550 states and 335728 transitions. [2022-11-19 07:06:54,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 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) [2022-11-19 07:06:54,540 INFO L276 IsEmpty]: Start isEmpty. Operand 66550 states and 335728 transitions. [2022-11-19 07:06:54,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 07:06:54,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:54,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:54,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:54,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-11-19 07:06:54,916 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 07:06:54,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:54,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1862715707, now seen corresponding path program 4 times [2022-11-19 07:06:54,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:06:54,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453949553] [2022-11-19 07:06:54,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:54,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:06:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:06:55,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:06:55,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453949553] [2022-11-19 07:06:55,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453949553] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:06:55,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975907587] [2022-11-19 07:06:55,895 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:06:55,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:06:55,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:06:55,896 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:06:55,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c429995-ed5a-4514-8c75-45f930c1df26/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-19 07:06:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:56,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-19 07:06:56,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:57,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:06:57,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:06:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:06:57,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975907587] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:06:57,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [207734200] [2022-11-19 07:06:57,802 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:06:57,802 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:06:57,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 23 [2022-11-19 07:06:57,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285205091] [2022-11-19 07:06:57,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:06:57,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 07:06:57,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:06:57,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 07:06:57,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2022-11-19 07:06:57,804 INFO L87 Difference]: Start difference. First operand 66550 states and 335728 transitions. Second operand has 24 states, 24 states have (on average 3.125) internal successors, (75), 23 states have internal predecessors, (75), 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)