./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe035_power.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_5bcf5873-8c01-420c-8a75-06c76a534633/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bcf5873-8c01-420c-8a75-06c76a534633/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bcf5873-8c01-420c-8a75-06c76a534633/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bcf5873-8c01-420c-8a75-06c76a534633/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe035_power.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bcf5873-8c01-420c-8a75-06c76a534633/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bcf5873-8c01-420c-8a75-06c76a534633/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:24:59,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:24:59,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:24:59,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:24:59,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:24:59,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:24:59,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:24:59,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:24:59,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:24:59,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:24:59,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:24:59,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:24:59,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:24:59,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:24:59,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:24:59,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:24:59,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:24:59,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:24:59,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:24:59,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:24:59,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:24:59,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:24:59,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:24:59,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:24:59,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:24:59,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:24:59,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:24:59,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:24:59,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:24:59,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:24:59,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:24:59,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:24:59,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:24:59,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:24:59,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:24:59,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:24:59,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:24:59,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:24:59,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:24:59,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:24:59,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:24:59,186 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bcf5873-8c01-420c-8a75-06c76a534633/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 09:24:59,205 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:24:59,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:24:59,206 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:24:59,206 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:24:59,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:24:59,207 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:24:59,207 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:24:59,207 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:24:59,207 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:24:59,207 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:24:59,208 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:24:59,208 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:24:59,208 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:24:59,208 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:24:59,208 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:24:59,209 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:24:59,209 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:24:59,209 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:24:59,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 09:24:59,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 09:24:59,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:24:59,210 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:24:59,211 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 09:24:59,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:24:59,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:24:59,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:24:59,211 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 09:24:59,211 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 09:24:59,212 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 09:24:59,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:24:59,212 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 09:24:59,212 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:24:59,212 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:24:59,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:24:59,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:24:59,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:24:59,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:24:59,213 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:24:59,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:24:59,214 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:24:59,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:24:59,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:24:59,214 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_5bcf5873-8c01-420c-8a75-06c76a534633/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bcf5873-8c01-420c-8a75-06c76a534633/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 [2022-12-14 09:24:59,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:24:59,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:24:59,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:24:59,424 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:24:59,425 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:24:59,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bcf5873-8c01-420c-8a75-06c76a534633/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-wmm/safe035_power.i [2022-12-14 09:25:01,958 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:25:02,158 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:25:02,159 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bcf5873-8c01-420c-8a75-06c76a534633/sv-benchmarks/c/pthread-wmm/safe035_power.i [2022-12-14 09:25:02,168 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bcf5873-8c01-420c-8a75-06c76a534633/bin/utaipan-gh47qXpMRh/data/0e0492a97/b9c0876ce3904e95b7ad7a187da95740/FLAGa414ecbfd [2022-12-14 09:25:02,556 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bcf5873-8c01-420c-8a75-06c76a534633/bin/utaipan-gh47qXpMRh/data/0e0492a97/b9c0876ce3904e95b7ad7a187da95740 [2022-12-14 09:25:02,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:25:02,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:25:02,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:25:02,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:25:02,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:25:02,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:25:02" (1/1) ... [2022-12-14 09:25:02,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@770b625f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:02, skipping insertion in model container [2022-12-14 09:25:02,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:25:02" (1/1) ... [2022-12-14 09:25:02,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:25:02,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:25:02,719 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bcf5873-8c01-420c-8a75-06c76a534633/sv-benchmarks/c/pthread-wmm/safe035_power.i[947,960] [2022-12-14 09:25:02,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,835 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,841 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,843 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,848 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,848 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,850 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,850 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,851 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,856 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,856 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,857 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,858 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:25:02,877 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:25:02,887 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bcf5873-8c01-420c-8a75-06c76a534633/sv-benchmarks/c/pthread-wmm/safe035_power.i[947,960] [2022-12-14 09:25:02,910 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,911 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,911 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,913 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,913 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,914 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,914 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,916 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,916 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,916 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,917 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,917 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,917 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,919 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,919 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,924 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,924 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,927 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,929 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,930 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,931 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,935 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,935 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,937 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,937 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,937 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,941 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,941 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,942 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,943 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,943 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 09:25:02,950 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 09:25:02,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:25:02,977 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:25:02,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:02 WrapperNode [2022-12-14 09:25:02,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:25:02,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:25:02,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:25:02,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:25:02,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:02" (1/1) ... [2022-12-14 09:25:03,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:02" (1/1) ... [2022-12-14 09:25:03,030 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 168 [2022-12-14 09:25:03,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:25:03,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:25:03,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:25:03,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:25:03,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:02" (1/1) ... [2022-12-14 09:25:03,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:02" (1/1) ... [2022-12-14 09:25:03,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:02" (1/1) ... [2022-12-14 09:25:03,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:02" (1/1) ... [2022-12-14 09:25:03,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:02" (1/1) ... [2022-12-14 09:25:03,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:02" (1/1) ... [2022-12-14 09:25:03,060 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:02" (1/1) ... [2022-12-14 09:25:03,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:02" (1/1) ... [2022-12-14 09:25:03,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:25:03,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:25:03,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:25:03,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:25:03,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:02" (1/1) ... [2022-12-14 09:25:03,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:25:03,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bcf5873-8c01-420c-8a75-06c76a534633/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:03,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bcf5873-8c01-420c-8a75-06c76a534633/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:25:03,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bcf5873-8c01-420c-8a75-06c76a534633/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:25:03,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 09:25:03,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 09:25:03,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:25:03,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 09:25:03,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 09:25:03,126 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-14 09:25:03,126 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-14 09:25:03,126 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-14 09:25:03,126 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-14 09:25:03,126 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-14 09:25:03,126 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-14 09:25:03,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:25:03,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 09:25:03,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:25:03,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:25:03,127 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 09:25:03,236 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:25:03,237 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:25:03,568 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:25:03,685 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:25:03,685 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 09:25:03,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:25:03 BoogieIcfgContainer [2022-12-14 09:25:03,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:25:03,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:25:03,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:25:03,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:25:03,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:25:02" (1/3) ... [2022-12-14 09:25:03,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc129b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:25:03, skipping insertion in model container [2022-12-14 09:25:03,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:02" (2/3) ... [2022-12-14 09:25:03,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc129b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:25:03, skipping insertion in model container [2022-12-14 09:25:03,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:25:03" (3/3) ... [2022-12-14 09:25:03,693 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2022-12-14 09:25:03,707 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:25:03,708 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-12-14 09:25:03,708 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 09:25:03,752 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-14 09:25:03,775 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 09:25:03,786 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 129 transitions, 273 flow [2022-12-14 09:25:03,788 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 129 transitions, 273 flow [2022-12-14 09:25:03,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 129 transitions, 273 flow [2022-12-14 09:25:03,824 INFO L130 PetriNetUnfolder]: 2/126 cut-off events. [2022-12-14 09:25:03,824 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-14 09:25:03,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 126 events. 2/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-12-14 09:25:03,829 INFO L119 LiptonReduction]: Number of co-enabled transitions 2648 [2022-12-14 09:25:07,331 INFO L134 LiptonReduction]: Checked pairs total: 8060 [2022-12-14 09:25:07,331 INFO L136 LiptonReduction]: Total number of compositions: 124 [2022-12-14 09:25:07,337 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 38 transitions, 91 flow [2022-12-14 09:25:07,405 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1756 states, 1745 states have (on average 3.431518624641834) internal successors, (5988), 1755 states have internal predecessors, (5988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:07,418 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:25:07,422 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;@7527a35b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:25:07,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-12-14 09:25:07,428 INFO L276 IsEmpty]: Start isEmpty. Operand has 1756 states, 1745 states have (on average 3.431518624641834) internal successors, (5988), 1755 states have internal predecessors, (5988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:07,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-12-14 09:25:07,431 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:07,432 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-12-14 09:25:07,432 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-14 09:25:07,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:07,436 INFO L85 PathProgramCache]: Analyzing trace with hash 639, now seen corresponding path program 1 times [2022-12-14 09:25:07,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:07,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535460684] [2022-12-14 09:25:07,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:07,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:07,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:07,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535460684] [2022-12-14 09:25:07,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535460684] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:07,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:07,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-14 09:25:07,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735993878] [2022-12-14 09:25:07,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:07,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 09:25:07,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:07,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 09:25:07,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 09:25:07,548 INFO L87 Difference]: Start difference. First operand has 1756 states, 1745 states have (on average 3.431518624641834) internal successors, (5988), 1755 states have internal predecessors, (5988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:07,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:07,634 INFO L93 Difference]: Finished difference Result 1670 states and 5520 transitions. [2022-12-14 09:25:07,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 09:25:07,635 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-12-14 09:25:07,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:07,655 INFO L225 Difference]: With dead ends: 1670 [2022-12-14 09:25:07,655 INFO L226 Difference]: Without dead ends: 1670 [2022-12-14 09:25:07,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 09:25:07,658 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:07,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:25:07,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2022-12-14 09:25:07,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1670. [2022-12-14 09:25:07,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 1665 states have (on average 3.315315315315315) internal successors, (5520), 1669 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:07,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 5520 transitions. [2022-12-14 09:25:07,756 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 5520 transitions. Word has length 1 [2022-12-14 09:25:07,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:07,756 INFO L495 AbstractCegarLoop]: Abstraction has 1670 states and 5520 transitions. [2022-12-14 09:25:07,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:07,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 5520 transitions. [2022-12-14 09:25:07,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 09:25:07,757 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:07,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:07,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:25:07,757 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-14 09:25:07,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:07,758 INFO L85 PathProgramCache]: Analyzing trace with hash -863742666, now seen corresponding path program 1 times [2022-12-14 09:25:07,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:07,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865601189] [2022-12-14 09:25:07,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:07,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:07,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:07,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865601189] [2022-12-14 09:25:07,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865601189] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:07,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:07,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 09:25:07,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854047607] [2022-12-14 09:25:07,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:07,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:25:07,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:07,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:25:07,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:25:07,971 INFO L87 Difference]: Start difference. First operand 1670 states and 5520 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:08,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:08,058 INFO L93 Difference]: Finished difference Result 1418 states and 4632 transitions. [2022-12-14 09:25:08,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:25:08,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 09:25:08,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:08,064 INFO L225 Difference]: With dead ends: 1418 [2022-12-14 09:25:08,064 INFO L226 Difference]: Without dead ends: 1382 [2022-12-14 09:25:08,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:25:08,065 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:08,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:25:08,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2022-12-14 09:25:08,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1382. [2022-12-14 09:25:08,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 1380 states have (on average 3.2869565217391306) internal successors, (4536), 1381 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:08,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 4536 transitions. [2022-12-14 09:25:08,095 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 4536 transitions. Word has length 7 [2022-12-14 09:25:08,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:08,096 INFO L495 AbstractCegarLoop]: Abstraction has 1382 states and 4536 transitions. [2022-12-14 09:25:08,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:08,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 4536 transitions. [2022-12-14 09:25:08,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 09:25:08,097 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:08,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:08,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 09:25:08,098 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-14 09:25:08,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:08,098 INFO L85 PathProgramCache]: Analyzing trace with hash -606224748, now seen corresponding path program 1 times [2022-12-14 09:25:08,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:08,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449791619] [2022-12-14 09:25:08,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:08,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:08,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:08,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449791619] [2022-12-14 09:25:08,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449791619] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:08,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:08,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:25:08,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42706707] [2022-12-14 09:25:08,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:08,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:25:08,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:08,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:25:08,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:25:08,345 INFO L87 Difference]: Start difference. First operand 1382 states and 4536 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:08,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:08,487 INFO L93 Difference]: Finished difference Result 1490 states and 4752 transitions. [2022-12-14 09:25:08,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 09:25:08,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-12-14 09:25:08,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:08,497 INFO L225 Difference]: With dead ends: 1490 [2022-12-14 09:25:08,497 INFO L226 Difference]: Without dead ends: 1490 [2022-12-14 09:25:08,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:25:08,499 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 41 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:08,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 5 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:25:08,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2022-12-14 09:25:08,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1382. [2022-12-14 09:25:08,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 1380 states have (on average 3.260869565217391) internal successors, (4500), 1381 states have internal predecessors, (4500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:08,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 4500 transitions. [2022-12-14 09:25:08,545 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 4500 transitions. Word has length 10 [2022-12-14 09:25:08,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:08,545 INFO L495 AbstractCegarLoop]: Abstraction has 1382 states and 4500 transitions. [2022-12-14 09:25:08,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:08,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 4500 transitions. [2022-12-14 09:25:08,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 09:25:08,547 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:08,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:08,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 09:25:08,547 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-14 09:25:08,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:08,548 INFO L85 PathProgramCache]: Analyzing trace with hash -606224729, now seen corresponding path program 1 times [2022-12-14 09:25:08,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:08,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501478334] [2022-12-14 09:25:08,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:08,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:08,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:08,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501478334] [2022-12-14 09:25:08,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501478334] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:08,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:08,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:25:08,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730405611] [2022-12-14 09:25:08,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:08,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 09:25:08,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:08,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 09:25:08,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:25:08,905 INFO L87 Difference]: Start difference. First operand 1382 states and 4500 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:09,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:09,053 INFO L93 Difference]: Finished difference Result 1166 states and 3636 transitions. [2022-12-14 09:25:09,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 09:25:09,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-12-14 09:25:09,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:09,057 INFO L225 Difference]: With dead ends: 1166 [2022-12-14 09:25:09,057 INFO L226 Difference]: Without dead ends: 950 [2022-12-14 09:25:09,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:25:09,058 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 31 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:09,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 9 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:25:09,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2022-12-14 09:25:09,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 950. [2022-12-14 09:25:09,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 949 states have (on average 3.148577449947313) internal successors, (2988), 949 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:09,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 2988 transitions. [2022-12-14 09:25:09,080 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 2988 transitions. Word has length 10 [2022-12-14 09:25:09,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:09,080 INFO L495 AbstractCegarLoop]: Abstraction has 950 states and 2988 transitions. [2022-12-14 09:25:09,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:09,080 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 2988 transitions. [2022-12-14 09:25:09,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 09:25:09,082 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:09,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:09,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 09:25:09,082 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-14 09:25:09,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:09,082 INFO L85 PathProgramCache]: Analyzing trace with hash 312543008, now seen corresponding path program 1 times [2022-12-14 09:25:09,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:09,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721701226] [2022-12-14 09:25:09,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:09,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:09,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:09,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721701226] [2022-12-14 09:25:09,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721701226] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:09,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:09,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 09:25:09,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165921126] [2022-12-14 09:25:09,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:09,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 09:25:09,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:09,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 09:25:09,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:25:09,670 INFO L87 Difference]: Start difference. First operand 950 states and 2988 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:09,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:09,979 INFO L93 Difference]: Finished difference Result 1196 states and 3710 transitions. [2022-12-14 09:25:09,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 09:25:09,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 09:25:09,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:09,985 INFO L225 Difference]: With dead ends: 1196 [2022-12-14 09:25:09,985 INFO L226 Difference]: Without dead ends: 1054 [2022-12-14 09:25:09,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-14 09:25:09,986 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 58 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:09,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 20 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 09:25:09,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2022-12-14 09:25:10,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 986. [2022-12-14 09:25:10,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 985 states have (on average 3.130964467005076) internal successors, (3084), 985 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 3084 transitions. [2022-12-14 09:25:10,005 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 3084 transitions. Word has length 13 [2022-12-14 09:25:10,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:10,005 INFO L495 AbstractCegarLoop]: Abstraction has 986 states and 3084 transitions. [2022-12-14 09:25:10,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:10,005 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 3084 transitions. [2022-12-14 09:25:10,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 09:25:10,006 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:10,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:10,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 09:25:10,006 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-14 09:25:10,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:10,007 INFO L85 PathProgramCache]: Analyzing trace with hash -935940142, now seen corresponding path program 2 times [2022-12-14 09:25:10,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:10,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559971202] [2022-12-14 09:25:10,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:10,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:10,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:10,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559971202] [2022-12-14 09:25:10,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559971202] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:10,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:10,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 09:25:10,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435693913] [2022-12-14 09:25:10,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:10,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 09:25:10,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:10,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 09:25:10,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:25:10,710 INFO L87 Difference]: Start difference. First operand 986 states and 3084 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:11,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:11,058 INFO L93 Difference]: Finished difference Result 1164 states and 3570 transitions. [2022-12-14 09:25:11,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 09:25:11,058 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 09:25:11,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:11,062 INFO L225 Difference]: With dead ends: 1164 [2022-12-14 09:25:11,067 INFO L226 Difference]: Without dead ends: 1056 [2022-12-14 09:25:11,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 09:25:11,068 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 34 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:11,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 9 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:25:11,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2022-12-14 09:25:11,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1050. [2022-12-14 09:25:11,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 1049 states have (on average 3.1296472831267876) internal successors, (3283), 1049 states have internal predecessors, (3283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:11,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 3283 transitions. [2022-12-14 09:25:11,086 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 3283 transitions. Word has length 13 [2022-12-14 09:25:11,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:11,087 INFO L495 AbstractCegarLoop]: Abstraction has 1050 states and 3283 transitions. [2022-12-14 09:25:11,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:11,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 3283 transitions. [2022-12-14 09:25:11,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 09:25:11,089 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:11,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:11,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 09:25:11,089 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-14 09:25:11,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:11,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1583854649, now seen corresponding path program 1 times [2022-12-14 09:25:11,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:11,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329471157] [2022-12-14 09:25:11,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:11,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:11,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:11,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:11,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329471157] [2022-12-14 09:25:11,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329471157] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:11,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:11,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 09:25:11,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609094991] [2022-12-14 09:25:11,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:11,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 09:25:11,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:11,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 09:25:11,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 09:25:11,796 INFO L87 Difference]: Start difference. First operand 1050 states and 3283 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:12,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:12,102 INFO L93 Difference]: Finished difference Result 1510 states and 4689 transitions. [2022-12-14 09:25:12,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 09:25:12,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 09:25:12,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:12,110 INFO L225 Difference]: With dead ends: 1510 [2022-12-14 09:25:12,110 INFO L226 Difference]: Without dead ends: 1378 [2022-12-14 09:25:12,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-12-14 09:25:12,111 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 65 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:12,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 13 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 09:25:12,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2022-12-14 09:25:12,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1244. [2022-12-14 09:25:12,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1243 states have (on average 3.2075623491552694) internal successors, (3987), 1243 states have internal predecessors, (3987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:12,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3987 transitions. [2022-12-14 09:25:12,151 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3987 transitions. Word has length 14 [2022-12-14 09:25:12,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:12,151 INFO L495 AbstractCegarLoop]: Abstraction has 1244 states and 3987 transitions. [2022-12-14 09:25:12,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:12,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3987 transitions. [2022-12-14 09:25:12,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 09:25:12,153 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:12,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:12,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 09:25:12,153 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-14 09:25:12,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:12,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1098924539, now seen corresponding path program 2 times [2022-12-14 09:25:12,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:12,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736986456] [2022-12-14 09:25:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:12,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:12,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:12,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736986456] [2022-12-14 09:25:12,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736986456] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:12,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:12,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:25:12,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655792875] [2022-12-14 09:25:12,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:12,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:25:12,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:12,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:25:12,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:25:12,332 INFO L87 Difference]: Start difference. First operand 1244 states and 3987 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:12,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:12,478 INFO L93 Difference]: Finished difference Result 1106 states and 3125 transitions. [2022-12-14 09:25:12,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 09:25:12,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 09:25:12,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:12,482 INFO L225 Difference]: With dead ends: 1106 [2022-12-14 09:25:12,482 INFO L226 Difference]: Without dead ends: 773 [2022-12-14 09:25:12,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:25:12,483 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 43 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:12,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 5 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:25:12,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-12-14 09:25:12,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 736. [2022-12-14 09:25:12,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 2.676190476190476) internal successors, (1967), 735 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:12,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1967 transitions. [2022-12-14 09:25:12,501 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1967 transitions. Word has length 14 [2022-12-14 09:25:12,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:12,501 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 1967 transitions. [2022-12-14 09:25:12,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:12,501 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1967 transitions. [2022-12-14 09:25:12,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 09:25:12,502 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:12,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:12,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 09:25:12,503 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-14 09:25:12,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:12,503 INFO L85 PathProgramCache]: Analyzing trace with hash 206506879, now seen corresponding path program 1 times [2022-12-14 09:25:12,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:12,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647428381] [2022-12-14 09:25:12,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:12,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:13,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:13,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647428381] [2022-12-14 09:25:13,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647428381] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:13,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:13,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 09:25:13,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886001400] [2022-12-14 09:25:13,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:13,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 09:25:13,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:13,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 09:25:13,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-14 09:25:13,118 INFO L87 Difference]: Start difference. First operand 736 states and 1967 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:13,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:13,469 INFO L93 Difference]: Finished difference Result 1190 states and 3116 transitions. [2022-12-14 09:25:13,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 09:25:13,470 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-12-14 09:25:13,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:13,474 INFO L225 Difference]: With dead ends: 1190 [2022-12-14 09:25:13,475 INFO L226 Difference]: Without dead ends: 824 [2022-12-14 09:25:13,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 09:25:13,475 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 55 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:13,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 24 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:25:13,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2022-12-14 09:25:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 708. [2022-12-14 09:25:13,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 2.592644978783593) internal successors, (1833), 707 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:13,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1833 transitions. [2022-12-14 09:25:13,487 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1833 transitions. Word has length 16 [2022-12-14 09:25:13,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:13,487 INFO L495 AbstractCegarLoop]: Abstraction has 708 states and 1833 transitions. [2022-12-14 09:25:13,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:13,488 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1833 transitions. [2022-12-14 09:25:13,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 09:25:13,488 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:13,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:13,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 09:25:13,489 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-14 09:25:13,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:13,489 INFO L85 PathProgramCache]: Analyzing trace with hash -215866211, now seen corresponding path program 2 times [2022-12-14 09:25:13,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:13,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094594719] [2022-12-14 09:25:13,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:13,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:13,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:13,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:13,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094594719] [2022-12-14 09:25:13,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094594719] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:13,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:13,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 09:25:13,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955243868] [2022-12-14 09:25:13,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:13,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 09:25:13,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:13,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 09:25:13,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 09:25:13,809 INFO L87 Difference]: Start difference. First operand 708 states and 1833 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:14,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:14,243 INFO L93 Difference]: Finished difference Result 1022 states and 2655 transitions. [2022-12-14 09:25:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 09:25:14,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-12-14 09:25:14,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:14,246 INFO L225 Difference]: With dead ends: 1022 [2022-12-14 09:25:14,246 INFO L226 Difference]: Without dead ends: 776 [2022-12-14 09:25:14,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-14 09:25:14,246 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 112 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:14,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 16 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:25:14,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2022-12-14 09:25:14,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 710. [2022-12-14 09:25:14,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 2.588152327221439) internal successors, (1835), 709 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:14,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1835 transitions. [2022-12-14 09:25:14,256 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1835 transitions. Word has length 16 [2022-12-14 09:25:14,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:14,260 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1835 transitions. [2022-12-14 09:25:14,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:14,260 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1835 transitions. [2022-12-14 09:25:14,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 09:25:14,261 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:14,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:14,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 09:25:14,261 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-14 09:25:14,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:14,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1723705233, now seen corresponding path program 3 times [2022-12-14 09:25:14,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:14,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120636826] [2022-12-14 09:25:14,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:14,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:14,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:14,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:14,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120636826] [2022-12-14 09:25:14,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120636826] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:14,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:14,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 09:25:14,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531910268] [2022-12-14 09:25:14,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:14,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 09:25:14,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:14,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 09:25:14,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:25:14,377 INFO L87 Difference]: Start difference. First operand 710 states and 1835 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:14,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:14,511 INFO L93 Difference]: Finished difference Result 538 states and 1302 transitions. [2022-12-14 09:25:14,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 09:25:14,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-12-14 09:25:14,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:14,512 INFO L225 Difference]: With dead ends: 538 [2022-12-14 09:25:14,512 INFO L226 Difference]: Without dead ends: 425 [2022-12-14 09:25:14,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:14,513 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 53 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:14,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 7 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:25:14,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-12-14 09:25:14,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 419. [2022-12-14 09:25:14,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 2.375598086124402) internal successors, (993), 418 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:14,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 993 transitions. [2022-12-14 09:25:14,518 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 993 transitions. Word has length 16 [2022-12-14 09:25:14,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:14,518 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 993 transitions. [2022-12-14 09:25:14,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:14,518 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 993 transitions. [2022-12-14 09:25:14,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 09:25:14,519 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:14,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:14,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 09:25:14,519 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-14 09:25:14,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:14,520 INFO L85 PathProgramCache]: Analyzing trace with hash -960997062, now seen corresponding path program 1 times [2022-12-14 09:25:14,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:14,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464163500] [2022-12-14 09:25:14,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:14,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:15,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:15,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:15,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464163500] [2022-12-14 09:25:15,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464163500] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:15,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:15,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 09:25:15,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311007537] [2022-12-14 09:25:15,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:15,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 09:25:15,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:15,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 09:25:15,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-14 09:25:15,445 INFO L87 Difference]: Start difference. First operand 419 states and 993 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:15,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:15,904 INFO L93 Difference]: Finished difference Result 615 states and 1428 transitions. [2022-12-14 09:25:15,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 09:25:15,905 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-12-14 09:25:15,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:15,906 INFO L225 Difference]: With dead ends: 615 [2022-12-14 09:25:15,906 INFO L226 Difference]: Without dead ends: 432 [2022-12-14 09:25:15,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-14 09:25:15,907 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 47 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:15,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 26 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 09:25:15,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-12-14 09:25:15,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 396. [2022-12-14 09:25:15,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 2.3417721518987342) internal successors, (925), 395 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:15,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 925 transitions. [2022-12-14 09:25:15,912 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 925 transitions. Word has length 20 [2022-12-14 09:25:15,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:15,912 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 925 transitions. [2022-12-14 09:25:15,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:15,912 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 925 transitions. [2022-12-14 09:25:15,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 09:25:15,913 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:15,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:15,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 09:25:15,914 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-14 09:25:15,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:15,914 INFO L85 PathProgramCache]: Analyzing trace with hash -480104766, now seen corresponding path program 2 times [2022-12-14 09:25:15,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:15,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598822954] [2022-12-14 09:25:15,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:15,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:16,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:16,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:16,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598822954] [2022-12-14 09:25:16,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598822954] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:16,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:16,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 09:25:16,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547504190] [2022-12-14 09:25:16,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:16,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 09:25:16,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:16,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 09:25:16,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 09:25:16,528 INFO L87 Difference]: Start difference. First operand 396 states and 925 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:16,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:16,879 INFO L93 Difference]: Finished difference Result 612 states and 1431 transitions. [2022-12-14 09:25:16,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 09:25:16,879 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-12-14 09:25:16,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:16,881 INFO L225 Difference]: With dead ends: 612 [2022-12-14 09:25:16,881 INFO L226 Difference]: Without dead ends: 486 [2022-12-14 09:25:16,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-14 09:25:16,881 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 35 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:16,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 26 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:25:16,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-12-14 09:25:16,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 438. [2022-12-14 09:25:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 2.3066361556064074) internal successors, (1008), 437 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:16,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1008 transitions. [2022-12-14 09:25:16,888 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1008 transitions. Word has length 20 [2022-12-14 09:25:16,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:16,888 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 1008 transitions. [2022-12-14 09:25:16,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:16,888 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1008 transitions. [2022-12-14 09:25:16,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 09:25:16,889 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:16,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:16,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 09:25:16,889 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-14 09:25:16,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:16,890 INFO L85 PathProgramCache]: Analyzing trace with hash -770741252, now seen corresponding path program 3 times [2022-12-14 09:25:16,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:16,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628180437] [2022-12-14 09:25:16,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:16,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:17,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:17,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628180437] [2022-12-14 09:25:17,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628180437] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:17,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:17,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 09:25:17,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573672074] [2022-12-14 09:25:17,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:17,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 09:25:17,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:17,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 09:25:17,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-14 09:25:17,707 INFO L87 Difference]: Start difference. First operand 438 states and 1008 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:18,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:18,125 INFO L93 Difference]: Finished difference Result 754 states and 1710 transitions. [2022-12-14 09:25:18,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 09:25:18,125 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-12-14 09:25:18,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:18,128 INFO L225 Difference]: With dead ends: 754 [2022-12-14 09:25:18,128 INFO L226 Difference]: Without dead ends: 525 [2022-12-14 09:25:18,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-12-14 09:25:18,128 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 51 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:18,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 31 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 09:25:18,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-12-14 09:25:18,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 387. [2022-12-14 09:25:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 2.300518134715026) internal successors, (888), 386 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:18,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 888 transitions. [2022-12-14 09:25:18,135 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 888 transitions. Word has length 20 [2022-12-14 09:25:18,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:18,135 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 888 transitions. [2022-12-14 09:25:18,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:18,135 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 888 transitions. [2022-12-14 09:25:18,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 09:25:18,136 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:18,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:18,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 09:25:18,136 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-14 09:25:18,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:18,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2119607314, now seen corresponding path program 1 times [2022-12-14 09:25:18,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:18,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565196150] [2022-12-14 09:25:18,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:18,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:18,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:18,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565196150] [2022-12-14 09:25:18,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565196150] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:18,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:18,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 09:25:18,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788392928] [2022-12-14 09:25:18,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:18,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 09:25:18,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:18,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 09:25:18,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-14 09:25:18,883 INFO L87 Difference]: Start difference. First operand 387 states and 888 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:19,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:19,254 INFO L93 Difference]: Finished difference Result 508 states and 1147 transitions. [2022-12-14 09:25:19,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 09:25:19,254 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-12-14 09:25:19,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:19,255 INFO L225 Difference]: With dead ends: 508 [2022-12-14 09:25:19,255 INFO L226 Difference]: Without dead ends: 223 [2022-12-14 09:25:19,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-12-14 09:25:19,256 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 63 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:19,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 22 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 09:25:19,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-12-14 09:25:19,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 192. [2022-12-14 09:25:19,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.130890052356021) internal successors, (407), 191 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:19,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 407 transitions. [2022-12-14 09:25:19,259 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 407 transitions. Word has length 20 [2022-12-14 09:25:19,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:19,259 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 407 transitions. [2022-12-14 09:25:19,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:19,260 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 407 transitions. [2022-12-14 09:25:19,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 09:25:19,260 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:19,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:19,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 09:25:19,260 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-14 09:25:19,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:19,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1080785172, now seen corresponding path program 4 times [2022-12-14 09:25:19,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:19,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573368145] [2022-12-14 09:25:19,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:19,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:19,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:19,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573368145] [2022-12-14 09:25:19,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573368145] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:19,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:19,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 09:25:19,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835019183] [2022-12-14 09:25:19,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:19,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 09:25:19,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:19,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 09:25:19,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:19,398 INFO L87 Difference]: Start difference. First operand 192 states and 407 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:19,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:19,505 INFO L93 Difference]: Finished difference Result 159 states and 339 transitions. [2022-12-14 09:25:19,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 09:25:19,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-12-14 09:25:19,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:19,506 INFO L225 Difference]: With dead ends: 159 [2022-12-14 09:25:19,506 INFO L226 Difference]: Without dead ends: 146 [2022-12-14 09:25:19,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:25:19,507 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 44 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:19,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 6 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:25:19,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-12-14 09:25:19,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2022-12-14 09:25:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.1724137931034484) internal successors, (315), 145 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 315 transitions. [2022-12-14 09:25:19,510 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 315 transitions. Word has length 20 [2022-12-14 09:25:19,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:19,510 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 315 transitions. [2022-12-14 09:25:19,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:19,511 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 315 transitions. [2022-12-14 09:25:19,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 09:25:19,511 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:19,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:19,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 09:25:19,511 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-14 09:25:19,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:19,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1665401324, now seen corresponding path program 1 times [2022-12-14 09:25:19,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:19,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748730768] [2022-12-14 09:25:19,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:19,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:19,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:19,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:19,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748730768] [2022-12-14 09:25:19,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748730768] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:19,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:19,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 09:25:19,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109521847] [2022-12-14 09:25:19,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:19,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 09:25:19,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:19,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 09:25:19,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:25:19,663 INFO L87 Difference]: Start difference. First operand 146 states and 315 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:19,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:19,761 INFO L93 Difference]: Finished difference Result 194 states and 414 transitions. [2022-12-14 09:25:19,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 09:25:19,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-14 09:25:19,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:19,762 INFO L225 Difference]: With dead ends: 194 [2022-12-14 09:25:19,762 INFO L226 Difference]: Without dead ends: 76 [2022-12-14 09:25:19,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:25:19,763 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 21 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:19,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:25:19,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-12-14 09:25:19,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-12-14 09:25:19,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.9333333333333333) internal successors, (145), 75 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 145 transitions. [2022-12-14 09:25:19,765 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 145 transitions. Word has length 25 [2022-12-14 09:25:19,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:19,765 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 145 transitions. [2022-12-14 09:25:19,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:19,765 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 145 transitions. [2022-12-14 09:25:19,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 09:25:19,766 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:19,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:19,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 09:25:19,766 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-14 09:25:19,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:19,766 INFO L85 PathProgramCache]: Analyzing trace with hash -891208252, now seen corresponding path program 2 times [2022-12-14 09:25:19,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:19,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63027776] [2022-12-14 09:25:19,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:19,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:20,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:20,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:20,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63027776] [2022-12-14 09:25:20,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63027776] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:20,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:20,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 09:25:20,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210101577] [2022-12-14 09:25:20,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:20,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 09:25:20,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:20,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 09:25:20,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-14 09:25:20,500 INFO L87 Difference]: Start difference. First operand 76 states and 145 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:20,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:20,686 INFO L93 Difference]: Finished difference Result 138 states and 261 transitions. [2022-12-14 09:25:20,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 09:25:20,686 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-14 09:25:20,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:20,687 INFO L225 Difference]: With dead ends: 138 [2022-12-14 09:25:20,687 INFO L226 Difference]: Without dead ends: 65 [2022-12-14 09:25:20,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-12-14 09:25:20,688 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 59 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:20,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 5 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:25:20,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-12-14 09:25:20,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-12-14 09:25:20,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.828125) internal successors, (117), 64 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:20,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 117 transitions. [2022-12-14 09:25:20,689 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 117 transitions. Word has length 25 [2022-12-14 09:25:20,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:20,689 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 117 transitions. [2022-12-14 09:25:20,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:20,689 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 117 transitions. [2022-12-14 09:25:20,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 09:25:20,689 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:20,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:20,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 09:25:20,690 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-14 09:25:20,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:20,690 INFO L85 PathProgramCache]: Analyzing trace with hash -272767084, now seen corresponding path program 3 times [2022-12-14 09:25:20,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:20,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973686861] [2022-12-14 09:25:20,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:20,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:25:22,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:22,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973686861] [2022-12-14 09:25:22,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973686861] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:22,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:22,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 09:25:22,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444637644] [2022-12-14 09:25:22,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:22,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 09:25:22,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:22,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 09:25:22,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-14 09:25:22,364 INFO L87 Difference]: Start difference. First operand 65 states and 117 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:22,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:22,685 INFO L93 Difference]: Finished difference Result 64 states and 116 transitions. [2022-12-14 09:25:22,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 09:25:22,686 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-14 09:25:22,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:22,686 INFO L225 Difference]: With dead ends: 64 [2022-12-14 09:25:22,686 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 09:25:22,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-12-14 09:25:22,687 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 19 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:22,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 7 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 09:25:22,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 09:25:22,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 09:25:22,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:22,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 09:25:22,688 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2022-12-14 09:25:22,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:22,688 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 09:25:22,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:25:22,688 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 09:25:22,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 09:25:22,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2022-12-14 09:25:22,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2022-12-14 09:25:22,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2022-12-14 09:25:22,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2022-12-14 09:25:22,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2022-12-14 09:25:22,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2022-12-14 09:25:22,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2022-12-14 09:25:22,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (5 of 13 remaining) [2022-12-14 09:25:22,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (4 of 13 remaining) [2022-12-14 09:25:22,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 13 remaining) [2022-12-14 09:25:22,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 13 remaining) [2022-12-14 09:25:22,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 13 remaining) [2022-12-14 09:25:22,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2022-12-14 09:25:22,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 09:25:22,694 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 09:25:22,697 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 09:25:22,697 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 09:25:22,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 09:25:22 BasicIcfg [2022-12-14 09:25:22,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 09:25:22,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 09:25:22,700 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 09:25:22,700 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 09:25:22,700 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:25:03" (3/4) ... [2022-12-14 09:25:22,702 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 09:25:22,705 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-12-14 09:25:22,705 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-12-14 09:25:22,705 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-12-14 09:25:22,708 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2022-12-14 09:25:22,708 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-12-14 09:25:22,709 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-14 09:25:22,709 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 09:25:22,734 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bcf5873-8c01-420c-8a75-06c76a534633/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 09:25:22,734 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 09:25:22,734 INFO L158 Benchmark]: Toolchain (without parser) took 20171.48ms. Allocated memory was 142.6MB in the beginning and 299.9MB in the end (delta: 157.3MB). Free memory was 106.7MB in the beginning and 99.4MB in the end (delta: 7.2MB). Peak memory consumption was 165.5MB. Max. memory is 16.1GB. [2022-12-14 09:25:22,734 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 142.6MB. Free memory is still 112.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:25:22,735 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.10ms. Allocated memory is still 142.6MB. Free memory was 106.2MB in the beginning and 75.2MB in the end (delta: 31.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-12-14 09:25:22,735 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.01ms. Allocated memory is still 142.6MB. Free memory was 75.2MB in the beginning and 72.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:25:22,735 INFO L158 Benchmark]: Boogie Preprocessor took 35.21ms. Allocated memory is still 142.6MB. Free memory was 72.1MB in the beginning and 69.4MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 09:25:22,735 INFO L158 Benchmark]: RCFGBuilder took 620.03ms. Allocated memory is still 142.6MB. Free memory was 69.4MB in the beginning and 73.5MB in the end (delta: -4.1MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2022-12-14 09:25:22,736 INFO L158 Benchmark]: TraceAbstraction took 19010.98ms. Allocated memory was 142.6MB in the beginning and 299.9MB in the end (delta: 157.3MB). Free memory was 72.8MB in the beginning and 102.6MB in the end (delta: -29.7MB). Peak memory consumption was 128.6MB. Max. memory is 16.1GB. [2022-12-14 09:25:22,736 INFO L158 Benchmark]: Witness Printer took 34.34ms. Allocated memory is still 299.9MB. Free memory was 102.6MB in the beginning and 99.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:25:22,737 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 142.6MB. Free memory is still 112.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 413.10ms. Allocated memory is still 142.6MB. Free memory was 106.2MB in the beginning and 75.2MB in the end (delta: 31.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.01ms. Allocated memory is still 142.6MB. Free memory was 75.2MB in the beginning and 72.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.21ms. Allocated memory is still 142.6MB. Free memory was 72.1MB in the beginning and 69.4MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 620.03ms. Allocated memory is still 142.6MB. Free memory was 69.4MB in the beginning and 73.5MB in the end (delta: -4.1MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. * TraceAbstraction took 19010.98ms. Allocated memory was 142.6MB in the beginning and 299.9MB in the end (delta: 157.3MB). Free memory was 72.8MB in the beginning and 102.6MB in the end (delta: -29.7MB). Peak memory consumption was 128.6MB. Max. memory is 16.1GB. * Witness Printer took 34.34ms. Allocated memory is still 299.9MB. Free memory was 102.6MB in the beginning and 99.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 137 PlacesBefore, 47 PlacesAfterwards, 129 TransitionsBefore, 38 TransitionsAfterwards, 2648 CoEnabledTransitionPairs, 7 FixpointIterations, 53 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 124 TotalNumberOfCompositions, 8060 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3375, independent: 3163, independent conditional: 0, independent unconditional: 3163, dependent: 212, dependent conditional: 0, dependent unconditional: 212, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1895, independent: 1837, independent conditional: 0, independent unconditional: 1837, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1895, independent: 1807, independent conditional: 0, independent unconditional: 1807, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 88, independent: 30, independent conditional: 0, independent unconditional: 30, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 290, independent: 23, independent conditional: 0, independent unconditional: 23, dependent: 267, dependent conditional: 0, dependent unconditional: 267, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3375, independent: 1326, independent conditional: 0, independent unconditional: 1326, dependent: 154, dependent conditional: 0, dependent unconditional: 154, unknown: 1895, unknown conditional: 0, unknown unconditional: 1895] , Statistics on independence cache: Total cache size (in pairs): 191, Positive cache size: 162, Positive conditional cache size: 0, Positive unconditional cache size: 162, 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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 866]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 159 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 18.9s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 840 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 840 mSDsluCounter, 236 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 183 mSDsCounter, 309 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3925 IncrementalHoareTripleChecker+Invalid, 4234 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 309 mSolverCounterUnsat, 53 mSDtfsCounter, 3925 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1756occurred in iteration=0, InterpolantAutomatonStates: 131, 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, 19 MinimizatonAttempts, 794 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 9.3s InterpolantComputationTime, 305 NumberOfCodeBlocks, 305 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 286 ConstructedInterpolants, 0 QuantifiedInterpolants, 2917 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 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 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-14 09:25:22,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bcf5873-8c01-420c-8a75-06c76a534633/bin/utaipan-gh47qXpMRh/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