./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-atomic/dekker.i --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_a233d2d5-14a6-41b3-87cb-31637209e66c/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a233d2d5-14a6-41b3-87cb-31637209e66c/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_a233d2d5-14a6-41b3-87cb-31637209e66c/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a233d2d5-14a6-41b3-87cb-31637209e66c/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-atomic/dekker.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a233d2d5-14a6-41b3-87cb-31637209e66c/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_a233d2d5-14a6-41b3-87cb-31637209e66c/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 1b6ef65da122b5f043dc58aac5c98a5417eca7613b00ec724ef2626b8a50d79f --- 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 06:35:12,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:35:12,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:35:12,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:35:12,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:35:12,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:35:12,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:35:12,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:35:12,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:35:12,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:35:12,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:35:12,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:35:12,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:35:12,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:35:12,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:35:12,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:35:12,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:35:12,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:35:12,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:35:12,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:35:12,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:35:12,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:35:12,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:35:12,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:35:12,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:35:12,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:35:12,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:35:12,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:35:12,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:35:12,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:35:12,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:35:12,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:35:12,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:35:12,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:35:12,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:35:12,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:35:12,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:35:12,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:35:12,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:35:12,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:35:12,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:35:12,618 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a233d2d5-14a6-41b3-87cb-31637209e66c/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 06:35:12,672 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:35:12,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:35:12,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:35:12,674 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:35:12,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:35:12,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:35:12,675 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:35:12,676 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:35:12,676 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:35:12,676 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:35:12,678 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:35:12,678 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:35:12,678 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:35:12,679 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:35:12,679 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:35:12,679 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:35:12,679 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:35:12,680 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:35:12,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 06:35:12,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 06:35:12,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:35:12,683 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:35:12,684 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:35:12,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:35:12,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:35:12,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:35:12,685 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 06:35:12,685 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 06:35:12,685 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 06:35:12,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:35:12,686 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:35:12,686 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:35:12,687 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:35:12,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:35:12,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:35:12,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:35:12,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:35:12,689 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:35:12,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:35:12,689 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:35:12,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:35:12,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:35:12,690 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_a233d2d5-14a6-41b3-87cb-31637209e66c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a233d2d5-14a6-41b3-87cb-31637209e66c/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b6ef65da122b5f043dc58aac5c98a5417eca7613b00ec724ef2626b8a50d79f [2022-11-19 06:35:13,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:35:13,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:35:13,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:35:13,057 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:35:13,058 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:35:13,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a233d2d5-14a6-41b3-87cb-31637209e66c/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/pthread-atomic/dekker.i [2022-11-19 06:35:13,146 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a233d2d5-14a6-41b3-87cb-31637209e66c/bin/utaipan-I9t0OCRTmS/data/255bcb0f6/e0e3100402284ba99eeb055cb8f3a68c/FLAG82f6d3917 [2022-11-19 06:35:13,857 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:35:13,858 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a233d2d5-14a6-41b3-87cb-31637209e66c/sv-benchmarks/c/pthread-atomic/dekker.i [2022-11-19 06:35:13,872 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a233d2d5-14a6-41b3-87cb-31637209e66c/bin/utaipan-I9t0OCRTmS/data/255bcb0f6/e0e3100402284ba99eeb055cb8f3a68c/FLAG82f6d3917 [2022-11-19 06:35:14,137 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a233d2d5-14a6-41b3-87cb-31637209e66c/bin/utaipan-I9t0OCRTmS/data/255bcb0f6/e0e3100402284ba99eeb055cb8f3a68c [2022-11-19 06:35:14,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:35:14,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:35:14,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:35:14,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:35:14,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:35:14,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:35:14" (1/1) ... [2022-11-19 06:35:14,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b2dcb86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:35:14, skipping insertion in model container [2022-11-19 06:35:14,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:35:14" (1/1) ... [2022-11-19 06:35:14,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:35:14,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:35:14,574 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-19 06:35:14,751 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_a233d2d5-14a6-41b3-87cb-31637209e66c/sv-benchmarks/c/pthread-atomic/dekker.i[31403,31416] [2022-11-19 06:35:14,764 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_a233d2d5-14a6-41b3-87cb-31637209e66c/sv-benchmarks/c/pthread-atomic/dekker.i[32483,32496] [2022-11-19 06:35:14,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:35:14,784 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:35:14,824 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-19 06:35:14,868 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_a233d2d5-14a6-41b3-87cb-31637209e66c/sv-benchmarks/c/pthread-atomic/dekker.i[31403,31416] [2022-11-19 06:35:14,874 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_a233d2d5-14a6-41b3-87cb-31637209e66c/sv-benchmarks/c/pthread-atomic/dekker.i[32483,32496] [2022-11-19 06:35:14,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:35:14,937 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:35:14,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:35:14 WrapperNode [2022-11-19 06:35:14,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:35:14,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:35:14,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:35:14,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:35:14,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:35:14" (1/1) ... [2022-11-19 06:35:14,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:35:14" (1/1) ... [2022-11-19 06:35:15,016 INFO L138 Inliner]: procedures = 172, calls = 60, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2022-11-19 06:35:15,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:35:15,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:35:15,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:35:15,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:35:15,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:35:14" (1/1) ... [2022-11-19 06:35:15,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:35:14" (1/1) ... [2022-11-19 06:35:15,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:35:14" (1/1) ... [2022-11-19 06:35:15,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:35:14" (1/1) ... [2022-11-19 06:35:15,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:35:14" (1/1) ... [2022-11-19 06:35:15,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:35:14" (1/1) ... [2022-11-19 06:35:15,085 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:35:14" (1/1) ... [2022-11-19 06:35:15,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:35:14" (1/1) ... [2022-11-19 06:35:15,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:35:15,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:35:15,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:35:15,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:35:15,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:35:14" (1/1) ... [2022-11-19 06:35:15,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:35:15,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a233d2d5-14a6-41b3-87cb-31637209e66c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:35:15,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a233d2d5-14a6-41b3-87cb-31637209e66c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:35:15,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a233d2d5-14a6-41b3-87cb-31637209e66c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:35:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:35:15,213 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-19 06:35:15,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-19 06:35:15,213 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-19 06:35:15,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-19 06:35:15,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:35:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-19 06:35:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:35:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:35:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:35:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:35:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-19 06:35:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:35:15,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:35:15,217 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 06:35:15,449 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:35:15,451 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:35:15,797 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:35:15,806 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:35:15,806 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-19 06:35:15,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:35:15 BoogieIcfgContainer [2022-11-19 06:35:15,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:35:15,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:35:15,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:35:15,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:35:15,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:35:14" (1/3) ... [2022-11-19 06:35:15,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bdf4f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:35:15, skipping insertion in model container [2022-11-19 06:35:15,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:35:14" (2/3) ... [2022-11-19 06:35:15,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bdf4f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:35:15, skipping insertion in model container [2022-11-19 06:35:15,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:35:15" (3/3) ... [2022-11-19 06:35:15,838 INFO L112 eAbstractionObserver]: Analyzing ICFG dekker.i [2022-11-19 06:35:15,863 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:35:15,863 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-19 06:35:15,864 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 06:35:15,950 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-19 06:35:15,994 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 06:35:16,012 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 118 transitions, 252 flow [2022-11-19 06:35:16,016 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 118 transitions, 252 flow [2022-11-19 06:35:16,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 118 transitions, 252 flow [2022-11-19 06:35:16,083 INFO L130 PetriNetUnfolder]: 13/116 cut-off events. [2022-11-19 06:35:16,083 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-19 06:35:16,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 116 events. 13/116 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 188 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-19 06:35:16,094 INFO L119 LiptonReduction]: Number of co-enabled transitions 2548 [2022-11-19 06:35:20,742 INFO L134 LiptonReduction]: Checked pairs total: 7629 [2022-11-19 06:35:20,742 INFO L136 LiptonReduction]: Total number of compositions: 96 [2022-11-19 06:35:20,753 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 48 transitions, 112 flow [2022-11-19 06:35:20,861 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 678 states, 656 states have (on average 3.033536585365854) internal successors, (1990), 677 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states 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 06:35:20,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:35:20,891 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;@2c93831c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:35:20,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-19 06:35:20,896 INFO L276 IsEmpty]: Start isEmpty. Operand has 678 states, 656 states have (on average 3.033536585365854) internal successors, (1990), 677 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states 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 06:35:20,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-19 06:35:20,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:35:20,903 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-19 06:35:20,904 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-19 06:35:20,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:35:20,910 INFO L85 PathProgramCache]: Analyzing trace with hash 475, now seen corresponding path program 1 times [2022-11-19 06:35:20,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:35:20,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796940991] [2022-11-19 06:35:20,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:35:20,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:35:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:21,050 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 06:35:21,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:35:21,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796940991] [2022-11-19 06:35:21,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796940991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:35:21,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:35:21,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-19 06:35:21,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014872107] [2022-11-19 06:35:21,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:35:21,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:35:21,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:35:21,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:35:21,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:35:21,097 INFO L87 Difference]: Start difference. First operand has 678 states, 656 states have (on average 3.033536585365854) internal successors, (1990), 677 states have internal predecessors, (1990), 0 states have call successors, (0), 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 06:35:21,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:35:21,247 INFO L93 Difference]: Finished difference Result 676 states and 1988 transitions. [2022-11-19 06:35:21,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:35:21,251 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 06:35:21,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:35:21,282 INFO L225 Difference]: With dead ends: 676 [2022-11-19 06:35:21,282 INFO L226 Difference]: Without dead ends: 676 [2022-11-19 06:35:21,284 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 06:35:21,289 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:35:21,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:35:21,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2022-11-19 06:35:21,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 676. [2022-11-19 06:35:21,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 656 states have (on average 3.0304878048780486) internal successors, (1988), 675 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states 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 06:35:21,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1988 transitions. [2022-11-19 06:35:21,433 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1988 transitions. Word has length 1 [2022-11-19 06:35:21,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:35:21,434 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 1988 transitions. [2022-11-19 06:35:21,434 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 06:35:21,436 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1988 transitions. [2022-11-19 06:35:21,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 06:35:21,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:35:21,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 06:35:21,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:35:21,438 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-19 06:35:21,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:35:21,439 INFO L85 PathProgramCache]: Analyzing trace with hash 466703, now seen corresponding path program 1 times [2022-11-19 06:35:21,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:35:21,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816815387] [2022-11-19 06:35:21,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:35:21,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:35:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:21,674 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 06:35:21,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:35:21,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816815387] [2022-11-19 06:35:21,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816815387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:35:21,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:35:21,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:35:21,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311517710] [2022-11-19 06:35:21,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:35:21,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:35:21,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:35:21,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:35:21,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:35:21,679 INFO L87 Difference]: Start difference. First operand 676 states and 1988 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 06:35:21,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:35:21,783 INFO L93 Difference]: Finished difference Result 652 states and 1936 transitions. [2022-11-19 06:35:21,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:35:21,784 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 06:35:21,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:35:21,794 INFO L225 Difference]: With dead ends: 652 [2022-11-19 06:35:21,794 INFO L226 Difference]: Without dead ends: 652 [2022-11-19 06:35:21,795 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 06:35:21,797 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:35:21,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 8 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:35:21,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-11-19 06:35:21,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2022-11-19 06:35:21,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 636 states have (on average 3.0440251572327046) internal successors, (1936), 651 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states 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 06:35:21,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1936 transitions. [2022-11-19 06:35:21,846 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1936 transitions. Word has length 3 [2022-11-19 06:35:21,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:35:21,847 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 1936 transitions. [2022-11-19 06:35:21,848 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 06:35:21,848 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1936 transitions. [2022-11-19 06:35:21,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 06:35:21,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:35:21,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 06:35:21,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:35:21,849 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-19 06:35:21,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:35:21,850 INFO L85 PathProgramCache]: Analyzing trace with hash 466701, now seen corresponding path program 1 times [2022-11-19 06:35:21,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:35:21,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639800433] [2022-11-19 06:35:21,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:35:21,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:35:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:22,168 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 06:35:22,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:35:22,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639800433] [2022-11-19 06:35:22,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639800433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:35:22,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:35:22,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:35:22,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845916727] [2022-11-19 06:35:22,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:35:22,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:35:22,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:35:22,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:35:22,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:35:22,172 INFO L87 Difference]: Start difference. First operand 652 states and 1936 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 06:35:22,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:35:22,227 INFO L93 Difference]: Finished difference Result 628 states and 1884 transitions. [2022-11-19 06:35:22,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:35:22,228 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 06:35:22,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:35:22,232 INFO L225 Difference]: With dead ends: 628 [2022-11-19 06:35:22,233 INFO L226 Difference]: Without dead ends: 628 [2022-11-19 06:35:22,233 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 06:35:22,234 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:35:22,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 8 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:35:22,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-11-19 06:35:22,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2022-11-19 06:35:22,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 616 states have (on average 3.0584415584415585) internal successors, (1884), 627 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states 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 06:35:22,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1884 transitions. [2022-11-19 06:35:22,261 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1884 transitions. Word has length 3 [2022-11-19 06:35:22,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:35:22,261 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1884 transitions. [2022-11-19 06:35:22,261 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 06:35:22,261 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1884 transitions. [2022-11-19 06:35:22,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:35:22,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:35:22,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:35:22,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:35:22,263 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-19 06:35:22,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:35:22,263 INFO L85 PathProgramCache]: Analyzing trace with hash 448511733, now seen corresponding path program 1 times [2022-11-19 06:35:22,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:35:22,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731968411] [2022-11-19 06:35:22,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:35:22,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:35:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:22,376 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 06:35:22,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:35:22,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731968411] [2022-11-19 06:35:22,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731968411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:35:22,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:35:22,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:35:22,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703174822] [2022-11-19 06:35:22,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:35:22,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:35:22,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:35:22,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:35:22,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:35:22,379 INFO L87 Difference]: Start difference. First operand 628 states and 1884 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:22,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:35:22,427 INFO L93 Difference]: Finished difference Result 484 states and 1404 transitions. [2022-11-19 06:35:22,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:35:22,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 06:35:22,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:35:22,431 INFO L225 Difference]: With dead ends: 484 [2022-11-19 06:35:22,431 INFO L226 Difference]: Without dead ends: 484 [2022-11-19 06:35:22,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:35:22,432 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 69 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 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 06:35:22,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 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 06:35:22,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-11-19 06:35:22,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2022-11-19 06:35:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 476 states have (on average 2.9495798319327733) internal successors, (1404), 483 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states 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 06:35:22,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1404 transitions. [2022-11-19 06:35:22,449 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1404 transitions. Word has length 5 [2022-11-19 06:35:22,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:35:22,450 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 1404 transitions. [2022-11-19 06:35:22,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:22,451 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1404 transitions. [2022-11-19 06:35:22,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:35:22,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:35:22,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:35:22,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:35:22,452 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-19 06:35:22,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:35:22,452 INFO L85 PathProgramCache]: Analyzing trace with hash 448511734, now seen corresponding path program 1 times [2022-11-19 06:35:22,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:35:22,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421587382] [2022-11-19 06:35:22,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:35:22,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:35:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:22,715 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 06:35:22,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:35:22,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421587382] [2022-11-19 06:35:22,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421587382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:35:22,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:35:22,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:35:22,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429086069] [2022-11-19 06:35:22,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:35:22,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:35:22,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:35:22,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:35:22,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:35:22,719 INFO L87 Difference]: Start difference. First operand 484 states and 1404 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:22,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:35:22,767 INFO L93 Difference]: Finished difference Result 340 states and 924 transitions. [2022-11-19 06:35:22,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:35:22,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 06:35:22,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:35:22,770 INFO L225 Difference]: With dead ends: 340 [2022-11-19 06:35:22,771 INFO L226 Difference]: Without dead ends: 340 [2022-11-19 06:35:22,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:35:22,772 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 67 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:35:22,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 8 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:35:22,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-11-19 06:35:22,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2022-11-19 06:35:22,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 336 states have (on average 2.75) internal successors, (924), 339 states have internal predecessors, (924), 0 states have call successors, (0), 0 states 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 06:35:22,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 924 transitions. [2022-11-19 06:35:22,788 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 924 transitions. Word has length 5 [2022-11-19 06:35:22,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:35:22,788 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 924 transitions. [2022-11-19 06:35:22,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:22,789 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 924 transitions. [2022-11-19 06:35:22,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:35:22,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:35:22,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 06:35:22,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:35:22,790 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-19 06:35:22,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:35:22,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1017805716, now seen corresponding path program 1 times [2022-11-19 06:35:22,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:35:22,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699022321] [2022-11-19 06:35:22,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:35:22,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:35:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:35:22,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:35:22,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699022321] [2022-11-19 06:35:22,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699022321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:35:22,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:35:22,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:35:22,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413746080] [2022-11-19 06:35:22,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:35:22,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:35:22,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:35:22,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:35:22,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:35:22,829 INFO L87 Difference]: Start difference. First operand 340 states and 924 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:22,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:35:22,890 INFO L93 Difference]: Finished difference Result 376 states and 959 transitions. [2022-11-19 06:35:22,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:35:22,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 06:35:22,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:35:22,893 INFO L225 Difference]: With dead ends: 376 [2022-11-19 06:35:22,893 INFO L226 Difference]: Without dead ends: 370 [2022-11-19 06:35:22,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:35:22,894 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:35:22,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 14 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:35:22,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-11-19 06:35:22,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 328. [2022-11-19 06:35:22,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 323 states have (on average 2.708978328173375) internal successors, (875), 327 states have internal predecessors, (875), 0 states have call successors, (0), 0 states 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 06:35:22,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 875 transitions. [2022-11-19 06:35:22,906 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 875 transitions. Word has length 6 [2022-11-19 06:35:22,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:35:22,907 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 875 transitions. [2022-11-19 06:35:22,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:22,907 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 875 transitions. [2022-11-19 06:35:22,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 06:35:22,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:35:22,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:35:22,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:35:22,909 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-19 06:35:22,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:35:22,910 INFO L85 PathProgramCache]: Analyzing trace with hash -30937603, now seen corresponding path program 1 times [2022-11-19 06:35:22,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:35:22,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896900445] [2022-11-19 06:35:22,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:35:22,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:35:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:22,943 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 06:35:22,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:35:22,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896900445] [2022-11-19 06:35:22,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896900445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:35:22,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:35:22,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:35:22,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344374189] [2022-11-19 06:35:22,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:35:22,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:35:22,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:35:22,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:35:22,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:35:22,946 INFO L87 Difference]: Start difference. First operand 328 states and 875 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:23,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:35:23,008 INFO L93 Difference]: Finished difference Result 344 states and 878 transitions. [2022-11-19 06:35:23,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:35:23,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 06:35:23,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:35:23,011 INFO L225 Difference]: With dead ends: 344 [2022-11-19 06:35:23,011 INFO L226 Difference]: Without dead ends: 336 [2022-11-19 06:35:23,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:35:23,012 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 19 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:35:23,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 20 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:35:23,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-19 06:35:23,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 310. [2022-11-19 06:35:23,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 305 states have (on average 2.675409836065574) internal successors, (816), 309 states have internal predecessors, (816), 0 states have call successors, (0), 0 states 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 06:35:23,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 816 transitions. [2022-11-19 06:35:23,023 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 816 transitions. Word has length 8 [2022-11-19 06:35:23,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:35:23,023 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 816 transitions. [2022-11-19 06:35:23,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:23,024 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 816 transitions. [2022-11-19 06:35:23,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 06:35:23,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:35:23,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:35:23,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 06:35:23,026 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-19 06:35:23,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:35:23,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2132647147, now seen corresponding path program 1 times [2022-11-19 06:35:23,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:35:23,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015933962] [2022-11-19 06:35:23,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:35:23,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:35:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:23,074 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 06:35:23,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:35:23,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015933962] [2022-11-19 06:35:23,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015933962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:35:23,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:35:23,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:35:23,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835467927] [2022-11-19 06:35:23,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:35:23,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:35:23,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:35:23,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:35:23,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:35:23,077 INFO L87 Difference]: Start difference. First operand 310 states and 816 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:23,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:35:23,214 INFO L93 Difference]: Finished difference Result 420 states and 1150 transitions. [2022-11-19 06:35:23,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:35:23,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 06:35:23,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:35:23,218 INFO L225 Difference]: With dead ends: 420 [2022-11-19 06:35:23,218 INFO L226 Difference]: Without dead ends: 396 [2022-11-19 06:35:23,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:35:23,219 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 53 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:35:23,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 27 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:35:23,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-11-19 06:35:23,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 316. [2022-11-19 06:35:23,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 311 states have (on average 2.665594855305466) internal successors, (829), 315 states have internal predecessors, (829), 0 states have call successors, (0), 0 states 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 06:35:23,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 829 transitions. [2022-11-19 06:35:23,231 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 829 transitions. Word has length 11 [2022-11-19 06:35:23,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:35:23,231 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 829 transitions. [2022-11-19 06:35:23,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:23,232 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 829 transitions. [2022-11-19 06:35:23,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 06:35:23,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:35:23,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:35:23,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 06:35:23,252 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr2Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-19 06:35:23,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:35:23,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1756575133, now seen corresponding path program 1 times [2022-11-19 06:35:23,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:35:23,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654361268] [2022-11-19 06:35:23,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:35:23,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:35:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:23,317 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 06:35:23,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:35:23,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654361268] [2022-11-19 06:35:23,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654361268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:35:23,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:35:23,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:35:23,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652444917] [2022-11-19 06:35:23,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:35:23,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:35:23,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:35:23,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:35:23,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:35:23,321 INFO L87 Difference]: Start difference. First operand 316 states and 829 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:23,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:35:23,449 INFO L93 Difference]: Finished difference Result 360 states and 1011 transitions. [2022-11-19 06:35:23,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:35:23,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 06:35:23,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:35:23,456 INFO L225 Difference]: With dead ends: 360 [2022-11-19 06:35:23,456 INFO L226 Difference]: Without dead ends: 340 [2022-11-19 06:35:23,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:35:23,458 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 45 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:35:23,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 28 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:35:23,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-11-19 06:35:23,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 266. [2022-11-19 06:35:23,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 2.7773584905660376) internal successors, (736), 265 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 06:35:23,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 736 transitions. [2022-11-19 06:35:23,469 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 736 transitions. Word has length 11 [2022-11-19 06:35:23,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:35:23,469 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 736 transitions. [2022-11-19 06:35:23,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:23,470 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 736 transitions. [2022-11-19 06:35:23,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 06:35:23,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:35:23,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:35:23,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 06:35:23,475 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-19 06:35:23,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:35:23,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1007180689, now seen corresponding path program 1 times [2022-11-19 06:35:23,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:35:23,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779816778] [2022-11-19 06:35:23,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:35:23,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:35:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:23,823 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 06:35:23,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:35:23,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779816778] [2022-11-19 06:35:23,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779816778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:35:23,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:35:23,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:35:23,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764228238] [2022-11-19 06:35:23,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:35:23,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:35:23,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:35:23,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:35:23,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:35:23,826 INFO L87 Difference]: Start difference. First operand 266 states and 736 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:23,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:35:23,858 INFO L93 Difference]: Finished difference Result 265 states and 735 transitions. [2022-11-19 06:35:23,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:35:23,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-19 06:35:23,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:35:23,859 INFO L225 Difference]: With dead ends: 265 [2022-11-19 06:35:23,859 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 06:35:23,860 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 06:35:23,860 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:35:23,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 8 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:35:23,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 06:35:23,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 06:35:23,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:23,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 06:35:23,862 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2022-11-19 06:35:23,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:35:23,862 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 06:35:23,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:23,863 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 06:35:23,863 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 06:35:23,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2022-11-19 06:35:23,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2022-11-19 06:35:23,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2022-11-19 06:35:23,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2022-11-19 06:35:23,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2022-11-19 06:35:23,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2022-11-19 06:35:23,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2022-11-19 06:35:23,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2022-11-19 06:35:23,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2022-11-19 06:35:23,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2022-11-19 06:35:23,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (4 of 15 remaining) [2022-11-19 06:35:23,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 15 remaining) [2022-11-19 06:35:23,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 15 remaining) [2022-11-19 06:35:23,869 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 15 remaining) [2022-11-19 06:35:23,869 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2022-11-19 06:35:23,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 06:35:23,872 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:35:23,877 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-19 06:35:23,877 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:35:23,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:35:23 BasicIcfg [2022-11-19 06:35:23,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:35:23,880 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:35:23,881 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:35:23,881 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:35:23,881 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:35:15" (3/4) ... [2022-11-19 06:35:23,884 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 06:35:23,890 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2022-11-19 06:35:23,891 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2022-11-19 06:35:23,895 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-19 06:35:23,896 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-19 06:35:23,896 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-19 06:35:23,896 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 06:35:23,935 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a233d2d5-14a6-41b3-87cb-31637209e66c/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 06:35:23,935 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:35:23,937 INFO L158 Benchmark]: Toolchain (without parser) took 9794.94ms. Allocated memory was 102.8MB in the beginning and 163.6MB in the end (delta: 60.8MB). Free memory was 73.8MB in the beginning and 62.7MB in the end (delta: 11.1MB). Peak memory consumption was 73.0MB. Max. memory is 16.1GB. [2022-11-19 06:35:23,937 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 102.8MB. Free memory is still 56.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:35:23,937 INFO L158 Benchmark]: CACSL2BoogieTranslator took 790.22ms. Allocated memory is still 102.8MB. Free memory was 73.6MB in the beginning and 66.9MB in the end (delta: 6.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 06:35:23,937 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.61ms. Allocated memory is still 102.8MB. Free memory was 66.9MB in the beginning and 64.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:35:23,938 INFO L158 Benchmark]: Boogie Preprocessor took 70.94ms. Allocated memory is still 102.8MB. Free memory was 64.8MB in the beginning and 63.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:35:23,938 INFO L158 Benchmark]: RCFGBuilder took 719.36ms. Allocated memory is still 102.8MB. Free memory was 63.2MB in the beginning and 48.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 06:35:23,939 INFO L158 Benchmark]: TraceAbstraction took 8063.57ms. Allocated memory was 102.8MB in the beginning and 163.6MB in the end (delta: 60.8MB). Free memory was 47.7MB in the beginning and 65.8MB in the end (delta: -18.1MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. [2022-11-19 06:35:23,939 INFO L158 Benchmark]: Witness Printer took 55.40ms. Allocated memory is still 163.6MB. Free memory was 65.8MB in the beginning and 62.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 06:35:23,941 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 102.8MB. Free memory is still 56.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 790.22ms. Allocated memory is still 102.8MB. Free memory was 73.6MB in the beginning and 66.9MB in the end (delta: 6.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.61ms. Allocated memory is still 102.8MB. Free memory was 66.9MB in the beginning and 64.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.94ms. Allocated memory is still 102.8MB. Free memory was 64.8MB in the beginning and 63.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 719.36ms. Allocated memory is still 102.8MB. Free memory was 63.2MB in the beginning and 48.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8063.57ms. Allocated memory was 102.8MB in the beginning and 163.6MB in the end (delta: 60.8MB). Free memory was 47.7MB in the beginning and 65.8MB in the end (delta: -18.1MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. * Witness Printer took 55.40ms. Allocated memory is still 163.6MB. Free memory was 65.8MB in the beginning and 62.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.7s, 112 PlacesBefore, 49 PlacesAfterwards, 118 TransitionsBefore, 48 TransitionsAfterwards, 2548 CoEnabledTransitionPairs, 7 FixpointIterations, 42 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 9 ConcurrentYvCompositions, 7 ChoiceCompositions, 96 TotalNumberOfCompositions, 7629 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4081, independent: 3833, independent conditional: 0, independent unconditional: 3833, dependent: 248, dependent conditional: 0, dependent unconditional: 248, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1557, independent: 1513, independent conditional: 0, independent unconditional: 1513, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1557, independent: 1509, independent conditional: 0, independent unconditional: 1509, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 48, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 99, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4081, independent: 2320, independent conditional: 0, independent unconditional: 2320, dependent: 204, dependent conditional: 0, dependent unconditional: 204, unknown: 1557, unknown conditional: 0, unknown unconditional: 1557] , Statistics on independence cache: Total cache size (in pairs): 339, Positive cache size: 310, Positive conditional cache size: 0, Positive unconditional cache size: 310, Negative cache size: 29, Negative conditional cache size: 0, Negative unconditional cache size: 29, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 780]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 739]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 789]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 150 locations, 15 error locations. Started 1 CEGAR loops. OverallTime: 7.9s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 372 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 372 mSDsluCounter, 137 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 565 IncrementalHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 98 mSDtfsCounter, 565 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=678occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 222 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 412 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-19 06:35:23,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a233d2d5-14a6-41b3-87cb-31637209e66c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE