./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d7da37-6741-460e-b4dc-f052291751ea/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d7da37-6741-460e-b4dc-f052291751ea/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_47d7da37-6741-460e-b4dc-f052291751ea/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d7da37-6741-460e-b4dc-f052291751ea/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d7da37-6741-460e-b4dc-f052291751ea/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_47d7da37-6741-460e-b4dc-f052291751ea/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 e02ca79ae11b312cb156178ccd52c5da7b51884a938996d16b5a625457869bce --- 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 10:18:43,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:18:43,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:18:43,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:18:43,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:18:43,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:18:43,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:18:43,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:18:43,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:18:43,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:18:43,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:18:43,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:18:43,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:18:43,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:18:43,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:18:43,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:18:43,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:18:43,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:18:43,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:18:43,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:18:43,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:18:43,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:18:43,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:18:43,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:18:43,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:18:43,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:18:43,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:18:43,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:18:43,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:18:43,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:18:43,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:18:43,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:18:43,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:18:43,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:18:43,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:18:43,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:18:43,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:18:43,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:18:43,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:18:43,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:18:43,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:18:43,825 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d7da37-6741-460e-b4dc-f052291751ea/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 10:18:43,846 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:18:43,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:18:43,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:18:43,847 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:18:43,847 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:18:43,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:18:43,848 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:18:43,848 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:18:43,848 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:18:43,848 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:18:43,849 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:18:43,849 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:18:43,849 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:18:43,849 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:18:43,849 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:18:43,849 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:18:43,850 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:18:43,850 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:18:43,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 10:18:43,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 10:18:43,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:18:43,851 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:18:43,851 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:18:43,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:18:43,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:18:43,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:18:43,852 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 10:18:43,852 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 10:18:43,852 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 10:18:43,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:18:43,853 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:18:43,853 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:18:43,853 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:18:43,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:18:43,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:18:43,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:18:43,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:18:43,854 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:18:43,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:18:43,854 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:18:43,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:18:43,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:18:43,855 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_47d7da37-6741-460e-b4dc-f052291751ea/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d7da37-6741-460e-b4dc-f052291751ea/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e02ca79ae11b312cb156178ccd52c5da7b51884a938996d16b5a625457869bce [2022-12-14 10:18:44,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:18:44,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:18:44,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:18:44,074 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:18:44,075 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:18:44,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d7da37-6741-460e-b4dc-f052291751ea/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-14 10:18:46,708 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:18:46,919 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:18:46,919 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d7da37-6741-460e-b4dc-f052291751ea/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-14 10:18:46,927 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d7da37-6741-460e-b4dc-f052291751ea/bin/utaipan-gh47qXpMRh/data/a2c60b868/c928f3e4b3ef4e1c9144940c690e4303/FLAG5a9076598 [2022-12-14 10:18:46,938 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d7da37-6741-460e-b4dc-f052291751ea/bin/utaipan-gh47qXpMRh/data/a2c60b868/c928f3e4b3ef4e1c9144940c690e4303 [2022-12-14 10:18:46,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:18:46,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:18:46,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:18:46,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:18:46,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:18:46,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:18:46" (1/1) ... [2022-12-14 10:18:46,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac1c53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:46, skipping insertion in model container [2022-12-14 10:18:46,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:18:46" (1/1) ... [2022-12-14 10:18:46,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:18:46,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:18:47,089 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_47d7da37-6741-460e-b4dc-f052291751ea/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-14 10:18:47,234 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,235 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,235 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,236 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,236 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,236 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,236 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,237 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,237 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,238 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,238 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,238 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,239 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,239 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,239 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,239 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,240 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,240 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,241 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,241 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,241 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,247 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,250 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:18:47,260 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:18:47,271 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_47d7da37-6741-460e-b4dc-f052291751ea/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-14 10:18:47,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,294 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,294 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,294 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,294 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,295 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,295 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,296 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,296 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,296 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,297 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,297 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,297 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,298 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,298 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,299 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,299 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,299 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,299 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,300 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,303 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,304 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,304 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,304 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,305 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 10:18:47,305 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 10:18:47,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:18:47,343 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:18:47,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:47 WrapperNode [2022-12-14 10:18:47,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:18:47,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:18:47,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:18:47,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:18:47,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:47" (1/1) ... [2022-12-14 10:18:47,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:47" (1/1) ... [2022-12-14 10:18:47,375 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-12-14 10:18:47,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:18:47,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:18:47,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:18:47,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:18:47,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:47" (1/1) ... [2022-12-14 10:18:47,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:47" (1/1) ... [2022-12-14 10:18:47,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:47" (1/1) ... [2022-12-14 10:18:47,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:47" (1/1) ... [2022-12-14 10:18:47,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:47" (1/1) ... [2022-12-14 10:18:47,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:47" (1/1) ... [2022-12-14 10:18:47,390 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:47" (1/1) ... [2022-12-14 10:18:47,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:47" (1/1) ... [2022-12-14 10:18:47,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:18:47,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:18:47,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:18:47,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:18:47,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:47" (1/1) ... [2022-12-14 10:18:47,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:18:47,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d7da37-6741-460e-b4dc-f052291751ea/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:18:47,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d7da37-6741-460e-b4dc-f052291751ea/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:18:47,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d7da37-6741-460e-b4dc-f052291751ea/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:18:47,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:18:47,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 10:18:47,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:18:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:18:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:18:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-14 10:18:47,451 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-14 10:18:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-14 10:18:47,451 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-14 10:18:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-14 10:18:47,451 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-14 10:18:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:18:47,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 10:18:47,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:18:47,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:18:47,453 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 10:18:47,550 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:18:47,552 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:18:47,714 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:18:47,720 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:18:47,720 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 10:18:47,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:18:47 BoogieIcfgContainer [2022-12-14 10:18:47,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:18:47,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:18:47,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:18:47,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:18:47,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:18:46" (1/3) ... [2022-12-14 10:18:47,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2452686a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:18:47, skipping insertion in model container [2022-12-14 10:18:47,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:47" (2/3) ... [2022-12-14 10:18:47,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2452686a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:18:47, skipping insertion in model container [2022-12-14 10:18:47,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:18:47" (3/3) ... [2022-12-14 10:18:47,728 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-14 10:18:47,742 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:18:47,743 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-14 10:18:47,743 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 10:18:47,789 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-14 10:18:47,814 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 10:18:47,825 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 100 transitions, 215 flow [2022-12-14 10:18:47,827 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 100 transitions, 215 flow [2022-12-14 10:18:47,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 100 transitions, 215 flow [2022-12-14 10:18:47,862 INFO L130 PetriNetUnfolder]: 2/97 cut-off events. [2022-12-14 10:18:47,863 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-14 10:18:47,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 97 events. 2/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2022-12-14 10:18:47,868 INFO L119 LiptonReduction]: Number of co-enabled transitions 1706 [2022-12-14 10:18:49,960 INFO L134 LiptonReduction]: Checked pairs total: 3125 [2022-12-14 10:18:49,960 INFO L136 LiptonReduction]: Total number of compositions: 101 [2022-12-14 10:18:49,967 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 29 transitions, 73 flow [2022-12-14 10:18:49,995 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 324 states, 316 states have (on average 3.0126582278481013) internal successors, (952), 323 states have internal predecessors, (952), 0 states have call successors, (0), 0 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 10:18:50,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:18:50,012 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;@31a3e8b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:18:50,012 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-14 10:18:50,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 316 states have (on average 3.0126582278481013) internal successors, (952), 323 states have internal predecessors, (952), 0 states have call successors, (0), 0 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 10:18:50,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-12-14 10:18:50,018 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:50,018 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-12-14 10:18:50,018 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 10:18:50,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:50,022 INFO L85 PathProgramCache]: Analyzing trace with hash 359, now seen corresponding path program 1 times [2022-12-14 10:18:50,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:50,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63505158] [2022-12-14 10:18:50,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:50,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:50,117 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 10:18:50,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:50,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63505158] [2022-12-14 10:18:50,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63505158] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:50,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:50,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-14 10:18:50,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543009417] [2022-12-14 10:18:50,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:50,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 10:18:50,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:50,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 10:18:50,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 10:18:50,148 INFO L87 Difference]: Start difference. First operand has 324 states, 316 states have (on average 3.0126582278481013) internal successors, (952), 323 states have internal predecessors, (952), 0 states have call successors, (0), 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 10:18:50,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:50,189 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2022-12-14 10:18:50,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 10:18:50,190 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 10:18:50,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:50,199 INFO L225 Difference]: With dead ends: 282 [2022-12-14 10:18:50,199 INFO L226 Difference]: Without dead ends: 282 [2022-12-14 10:18:50,199 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 10:18:50,201 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:50,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:18:50,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-12-14 10:18:50,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2022-12-14 10:18:50,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 280 states have (on average 2.8857142857142857) internal successors, (808), 281 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 10:18:50,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 808 transitions. [2022-12-14 10:18:50,255 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 808 transitions. Word has length 1 [2022-12-14 10:18:50,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:50,255 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 808 transitions. [2022-12-14 10:18:50,255 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 10:18:50,256 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 808 transitions. [2022-12-14 10:18:50,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 10:18:50,256 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:50,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:50,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:18:50,257 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 10:18:50,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:50,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1232030771, now seen corresponding path program 1 times [2022-12-14 10:18:50,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:50,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434587853] [2022-12-14 10:18:50,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:50,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:50,731 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 10:18:50,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:50,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434587853] [2022-12-14 10:18:50,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434587853] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:50,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:50,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:18:50,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918163978] [2022-12-14 10:18:50,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:50,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:18:50,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:50,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:18:50,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:18:50,734 INFO L87 Difference]: Start difference. First operand 282 states and 808 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:18:50,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:50,848 INFO L93 Difference]: Finished difference Result 426 states and 1204 transitions. [2022-12-14 10:18:50,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:18:50,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 10:18:50,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:50,850 INFO L225 Difference]: With dead ends: 426 [2022-12-14 10:18:50,850 INFO L226 Difference]: Without dead ends: 426 [2022-12-14 10:18:50,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:18:50,851 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 25 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 21 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 10:18:50,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 21 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:18:50,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-12-14 10:18:50,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 390. [2022-12-14 10:18:50,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 388 states have (on average 2.9097938144329896) internal successors, (1129), 389 states have internal predecessors, (1129), 0 states have call successors, (0), 0 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 10:18:50,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1129 transitions. [2022-12-14 10:18:50,866 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1129 transitions. Word has length 9 [2022-12-14 10:18:50,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:50,867 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 1129 transitions. [2022-12-14 10:18:50,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:18:50,867 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1129 transitions. [2022-12-14 10:18:50,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 10:18:50,868 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:50,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:50,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:18:50,868 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 10:18:50,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:50,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1232030701, now seen corresponding path program 1 times [2022-12-14 10:18:50,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:50,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096042522] [2022-12-14 10:18:50,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:50,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:50,950 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 10:18:50,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:50,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096042522] [2022-12-14 10:18:50,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096042522] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:50,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:50,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:18:50,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107273080] [2022-12-14 10:18:50,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:50,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:18:50,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:50,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:18:50,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:18:50,953 INFO L87 Difference]: Start difference. First operand 390 states and 1129 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:18:51,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:51,022 INFO L93 Difference]: Finished difference Result 744 states and 2008 transitions. [2022-12-14 10:18:51,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:18:51,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 10:18:51,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:51,025 INFO L225 Difference]: With dead ends: 744 [2022-12-14 10:18:51,025 INFO L226 Difference]: Without dead ends: 650 [2022-12-14 10:18:51,025 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 10:18:51,026 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 22 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:51,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 11 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:18:51,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-12-14 10:18:51,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 494. [2022-12-14 10:18:51,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 492 states have (on average 2.8333333333333335) internal successors, (1394), 493 states have internal predecessors, (1394), 0 states have call successors, (0), 0 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 10:18:51,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1394 transitions. [2022-12-14 10:18:51,043 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1394 transitions. Word has length 9 [2022-12-14 10:18:51,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:51,043 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 1394 transitions. [2022-12-14 10:18:51,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:18:51,043 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1394 transitions. [2022-12-14 10:18:51,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 10:18:51,044 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:51,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:51,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:18:51,044 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 10:18:51,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:51,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1589804315, now seen corresponding path program 1 times [2022-12-14 10:18:51,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:51,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639961470] [2022-12-14 10:18:51,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:51,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:51,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:18:51,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:51,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639961470] [2022-12-14 10:18:51,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639961470] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:51,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:51,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:18:51,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187706981] [2022-12-14 10:18:51,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:51,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:18:51,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:51,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:18:51,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:18:51,125 INFO L87 Difference]: Start difference. First operand 494 states and 1394 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 10:18:51,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:51,204 INFO L93 Difference]: Finished difference Result 684 states and 1824 transitions. [2022-12-14 10:18:51,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:18:51,205 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 10:18:51,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:51,208 INFO L225 Difference]: With dead ends: 684 [2022-12-14 10:18:51,208 INFO L226 Difference]: Without dead ends: 628 [2022-12-14 10:18:51,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:18:51,210 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 40 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:51,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 12 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:18:51,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-12-14 10:18:51,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 472. [2022-12-14 10:18:51,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 470 states have (on average 2.8085106382978724) internal successors, (1320), 471 states have internal predecessors, (1320), 0 states have call successors, (0), 0 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 10:18:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1320 transitions. [2022-12-14 10:18:51,228 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1320 transitions. Word has length 10 [2022-12-14 10:18:51,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:51,228 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 1320 transitions. [2022-12-14 10:18:51,228 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 10:18:51,229 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1320 transitions. [2022-12-14 10:18:51,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 10:18:51,229 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:51,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:51,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 10:18:51,230 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 10:18:51,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:51,230 INFO L85 PathProgramCache]: Analyzing trace with hash -463416301, now seen corresponding path program 1 times [2022-12-14 10:18:51,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:51,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671796793] [2022-12-14 10:18:51,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:51,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:51,316 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 10:18:51,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:51,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671796793] [2022-12-14 10:18:51,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671796793] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:51,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:51,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:18:51,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359866922] [2022-12-14 10:18:51,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:51,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:18:51,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:51,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:18:51,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:18:51,318 INFO L87 Difference]: Start difference. First operand 472 states and 1320 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 10:18:51,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:51,432 INFO L93 Difference]: Finished difference Result 798 states and 2131 transitions. [2022-12-14 10:18:51,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 10:18:51,433 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 10:18:51,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:51,435 INFO L225 Difference]: With dead ends: 798 [2022-12-14 10:18:51,435 INFO L226 Difference]: Without dead ends: 717 [2022-12-14 10:18:51,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:18:51,436 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 65 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:51,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 13 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:18:51,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-12-14 10:18:51,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 500. [2022-12-14 10:18:51,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 498 states have (on average 2.8112449799196786) internal successors, (1400), 499 states have internal predecessors, (1400), 0 states have call successors, (0), 0 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 10:18:51,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1400 transitions. [2022-12-14 10:18:51,450 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1400 transitions. Word has length 10 [2022-12-14 10:18:51,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:51,451 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 1400 transitions. [2022-12-14 10:18:51,451 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 10:18:51,451 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1400 transitions. [2022-12-14 10:18:51,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 10:18:51,452 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:51,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:51,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 10:18:51,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 10:18:51,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:51,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1624371501, now seen corresponding path program 1 times [2022-12-14 10:18:51,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:51,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175764024] [2022-12-14 10:18:51,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:51,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:51,678 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 10:18:51,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:51,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175764024] [2022-12-14 10:18:51,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175764024] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:51,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:51,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:18:51,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483376372] [2022-12-14 10:18:51,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:51,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:18:51,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:51,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:18:51,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:18:51,680 INFO L87 Difference]: Start difference. First operand 500 states and 1400 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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 10:18:51,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:51,810 INFO L93 Difference]: Finished difference Result 701 states and 1849 transitions. [2022-12-14 10:18:51,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:18:51,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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 10:18:51,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:51,814 INFO L225 Difference]: With dead ends: 701 [2022-12-14 10:18:51,814 INFO L226 Difference]: Without dead ends: 641 [2022-12-14 10:18:51,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:18:51,815 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:51,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 30 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:18:51,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-12-14 10:18:51,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 364. [2022-12-14 10:18:51,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 362 states have (on average 2.660220994475138) internal successors, (963), 363 states have internal predecessors, (963), 0 states have call successors, (0), 0 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 10:18:51,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 963 transitions. [2022-12-14 10:18:51,830 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 963 transitions. Word has length 10 [2022-12-14 10:18:51,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:51,830 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 963 transitions. [2022-12-14 10:18:51,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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 10:18:51,831 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 963 transitions. [2022-12-14 10:18:51,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 10:18:51,832 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:51,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:51,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 10:18:51,832 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 10:18:51,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:51,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1482844557, now seen corresponding path program 1 times [2022-12-14 10:18:51,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:51,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951499364] [2022-12-14 10:18:51,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:51,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:51,919 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 10:18:51,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:51,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951499364] [2022-12-14 10:18:51,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951499364] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:51,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:51,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:18:51,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510166531] [2022-12-14 10:18:51,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:51,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:18:51,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:51,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:18:51,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:18:51,921 INFO L87 Difference]: Start difference. First operand 364 states and 963 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:18:52,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:52,020 INFO L93 Difference]: Finished difference Result 469 states and 1174 transitions. [2022-12-14 10:18:52,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 10:18:52,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 10:18:52,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:52,022 INFO L225 Difference]: With dead ends: 469 [2022-12-14 10:18:52,022 INFO L226 Difference]: Without dead ends: 292 [2022-12-14 10:18:52,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-14 10:18:52,023 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 79 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:52,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 10 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:18:52,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-12-14 10:18:52,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 232. [2022-12-14 10:18:52,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 230 states have (on average 2.526086956521739) internal successors, (581), 231 states have internal predecessors, (581), 0 states have call successors, (0), 0 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 10:18:52,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 581 transitions. [2022-12-14 10:18:52,032 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 581 transitions. Word has length 11 [2022-12-14 10:18:52,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:52,032 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 581 transitions. [2022-12-14 10:18:52,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:18:52,032 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 581 transitions. [2022-12-14 10:18:52,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 10:18:52,033 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:52,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:52,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 10:18:52,033 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 10:18:52,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:52,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1453393123, now seen corresponding path program 1 times [2022-12-14 10:18:52,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:52,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161893579] [2022-12-14 10:18:52,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:52,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:52,110 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 10:18:52,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:52,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161893579] [2022-12-14 10:18:52,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161893579] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:52,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:52,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:18:52,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104185270] [2022-12-14 10:18:52,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:52,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:18:52,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:52,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:18:52,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:18:52,112 INFO L87 Difference]: Start difference. First operand 232 states and 581 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:18:52,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:52,174 INFO L93 Difference]: Finished difference Result 326 states and 764 transitions. [2022-12-14 10:18:52,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:18:52,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 10:18:52,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:52,176 INFO L225 Difference]: With dead ends: 326 [2022-12-14 10:18:52,176 INFO L226 Difference]: Without dead ends: 300 [2022-12-14 10:18:52,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:18:52,176 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 26 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:52,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 7 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:18:52,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-12-14 10:18:52,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 220. [2022-12-14 10:18:52,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 218 states have (on average 2.481651376146789) internal successors, (541), 219 states have internal predecessors, (541), 0 states have call successors, (0), 0 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 10:18:52,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 541 transitions. [2022-12-14 10:18:52,182 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 541 transitions. Word has length 12 [2022-12-14 10:18:52,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:52,182 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 541 transitions. [2022-12-14 10:18:52,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:18:52,182 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 541 transitions. [2022-12-14 10:18:52,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 10:18:52,182 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:52,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:52,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 10:18:52,183 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 10:18:52,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:52,183 INFO L85 PathProgramCache]: Analyzing trace with hash 292437923, now seen corresponding path program 1 times [2022-12-14 10:18:52,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:52,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170972857] [2022-12-14 10:18:52,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:52,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:52,388 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 10:18:52,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:52,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170972857] [2022-12-14 10:18:52,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170972857] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:52,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:52,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:18:52,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774032631] [2022-12-14 10:18:52,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:52,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:18:52,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:52,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:18:52,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:18:52,389 INFO L87 Difference]: Start difference. First operand 220 states and 541 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:18:52,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:52,430 INFO L93 Difference]: Finished difference Result 202 states and 478 transitions. [2022-12-14 10:18:52,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:18:52,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 10:18:52,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:52,431 INFO L225 Difference]: With dead ends: 202 [2022-12-14 10:18:52,431 INFO L226 Difference]: Without dead ends: 168 [2022-12-14 10:18:52,431 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 10:18:52,432 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 15 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:52,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 15 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:18:52,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-12-14 10:18:52,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 114. [2022-12-14 10:18:52,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.2831858407079646) internal successors, (258), 113 states have internal predecessors, (258), 0 states have call successors, (0), 0 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 10:18:52,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 258 transitions. [2022-12-14 10:18:52,436 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 258 transitions. Word has length 12 [2022-12-14 10:18:52,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:52,437 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 258 transitions. [2022-12-14 10:18:52,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:18:52,437 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 258 transitions. [2022-12-14 10:18:52,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 10:18:52,437 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:52,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:52,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 10:18:52,438 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 10:18:52,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:52,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2114010216, now seen corresponding path program 1 times [2022-12-14 10:18:52,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:52,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180587571] [2022-12-14 10:18:52,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:52,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:52,535 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 10:18:52,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:52,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180587571] [2022-12-14 10:18:52,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180587571] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:52,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:52,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:18:52,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453672444] [2022-12-14 10:18:52,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:52,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:18:52,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:52,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:18:52,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:18:52,536 INFO L87 Difference]: Start difference. First operand 114 states and 258 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 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 10:18:52,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:52,579 INFO L93 Difference]: Finished difference Result 146 states and 322 transitions. [2022-12-14 10:18:52,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:18:52,579 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 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 10:18:52,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:52,580 INFO L225 Difference]: With dead ends: 146 [2022-12-14 10:18:52,580 INFO L226 Difference]: Without dead ends: 56 [2022-12-14 10:18:52,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:18:52,580 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 35 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:52,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 8 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:18:52,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-12-14 10:18:52,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-12-14 10:18:52,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.0545454545454547) internal successors, (113), 55 states have internal predecessors, (113), 0 states have call successors, (0), 0 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 10:18:52,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 113 transitions. [2022-12-14 10:18:52,583 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 113 transitions. Word has length 13 [2022-12-14 10:18:52,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:52,583 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 113 transitions. [2022-12-14 10:18:52,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 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 10:18:52,583 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 113 transitions. [2022-12-14 10:18:52,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 10:18:52,584 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:52,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:52,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 10:18:52,584 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 10:18:52,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:52,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1985062984, now seen corresponding path program 2 times [2022-12-14 10:18:52,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:52,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691096617] [2022-12-14 10:18:52,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:52,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:52,662 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 10:18:52,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:52,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691096617] [2022-12-14 10:18:52,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691096617] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:52,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:52,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:18:52,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396579733] [2022-12-14 10:18:52,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:52,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:18:52,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:52,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:18:52,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:18:52,663 INFO L87 Difference]: Start difference. First operand 56 states and 113 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:18:52,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:52,679 INFO L93 Difference]: Finished difference Result 45 states and 78 transitions. [2022-12-14 10:18:52,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:18:52,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 10:18:52,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:52,680 INFO L225 Difference]: With dead ends: 45 [2022-12-14 10:18:52,680 INFO L226 Difference]: Without dead ends: 45 [2022-12-14 10:18:52,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:18:52,681 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:52,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:18:52,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-12-14 10:18:52,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-12-14 10:18:52,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 44 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 10:18:52,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 78 transitions. [2022-12-14 10:18:52,683 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 78 transitions. Word has length 13 [2022-12-14 10:18:52,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:52,683 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 78 transitions. [2022-12-14 10:18:52,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:18:52,683 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 78 transitions. [2022-12-14 10:18:52,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 10:18:52,684 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:52,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:52,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 10:18:52,684 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 10:18:52,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:52,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1406701304, now seen corresponding path program 1 times [2022-12-14 10:18:52,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:52,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776227562] [2022-12-14 10:18:52,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:52,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:52,765 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 10:18:52,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:52,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776227562] [2022-12-14 10:18:52,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776227562] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:52,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:52,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:18:52,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751473214] [2022-12-14 10:18:52,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:52,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:18:52,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:52,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:18:52,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:18:52,767 INFO L87 Difference]: Start difference. First operand 45 states and 78 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 10:18:52,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:52,786 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2022-12-14 10:18:52,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:18:52,787 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 10:18:52,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:52,787 INFO L225 Difference]: With dead ends: 27 [2022-12-14 10:18:52,787 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 10:18:52,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:18:52,788 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:52,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:18:52,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 10:18:52,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-12-14 10:18:52,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 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 10:18:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-12-14 10:18:52,790 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 14 [2022-12-14 10:18:52,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:52,790 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-12-14 10:18:52,790 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 10:18:52,790 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-12-14 10:18:52,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 10:18:52,790 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:52,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:52,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 10:18:52,791 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-14 10:18:52,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:52,791 INFO L85 PathProgramCache]: Analyzing trace with hash 657000916, now seen corresponding path program 1 times [2022-12-14 10:18:52,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:52,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799979296] [2022-12-14 10:18:52,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:52,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:52,879 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 10:18:52,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:52,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799979296] [2022-12-14 10:18:52,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799979296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:52,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:52,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:18:52,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115996736] [2022-12-14 10:18:52,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:52,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:18:52,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:52,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:18:52,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:18:52,881 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:18:52,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:52,895 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2022-12-14 10:18:52,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:18:52,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 10:18:52,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:52,896 INFO L225 Difference]: With dead ends: 19 [2022-12-14 10:18:52,896 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 10:18:52,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:18:52,897 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:52,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:18:52,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 10:18:52,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 10:18:52,898 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 10:18:52,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 10:18:52,898 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-12-14 10:18:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:52,898 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 10:18:52,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:18:52,899 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 10:18:52,899 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 10:18:52,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2022-12-14 10:18:52,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2022-12-14 10:18:52,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2022-12-14 10:18:52,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2022-12-14 10:18:52,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2022-12-14 10:18:52,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2022-12-14 10:18:52,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2022-12-14 10:18:52,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2022-12-14 10:18:52,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2022-12-14 10:18:52,903 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2022-12-14 10:18:52,903 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2022-12-14 10:18:52,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 10:18:52,905 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:52,907 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 10:18:52,908 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 10:18:52,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 10:18:52 BasicIcfg [2022-12-14 10:18:52,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 10:18:52,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 10:18:52,911 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 10:18:52,911 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 10:18:52,911 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:18:47" (3/4) ... [2022-12-14 10:18:52,914 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 10:18:52,920 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-12-14 10:18:52,920 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-12-14 10:18:52,920 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-12-14 10:18:52,924 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-12-14 10:18:52,924 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-14 10:18:52,924 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 10:18:52,924 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 10:18:52,950 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d7da37-6741-460e-b4dc-f052291751ea/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 10:18:52,950 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 10:18:52,951 INFO L158 Benchmark]: Toolchain (without parser) took 6010.12ms. Allocated memory is still 211.8MB. Free memory was 175.0MB in the beginning and 62.0MB in the end (delta: 113.0MB). Peak memory consumption was 114.6MB. Max. memory is 16.1GB. [2022-12-14 10:18:52,951 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 113.2MB. Free memory is still 88.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:18:52,951 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.51ms. Allocated memory is still 211.8MB. Free memory was 174.5MB in the beginning and 152.0MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-14 10:18:52,951 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.32ms. Allocated memory is still 211.8MB. Free memory was 152.0MB in the beginning and 149.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:18:52,952 INFO L158 Benchmark]: Boogie Preprocessor took 16.29ms. Allocated memory is still 211.8MB. Free memory was 149.7MB in the beginning and 148.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:18:52,952 INFO L158 Benchmark]: RCFGBuilder took 329.22ms. Allocated memory is still 211.8MB. Free memory was 147.8MB in the beginning and 133.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 10:18:52,952 INFO L158 Benchmark]: TraceAbstraction took 5186.52ms. Allocated memory is still 211.8MB. Free memory was 133.1MB in the beginning and 65.1MB in the end (delta: 68.0MB). Peak memory consumption was 70.6MB. Max. memory is 16.1GB. [2022-12-14 10:18:52,952 INFO L158 Benchmark]: Witness Printer took 39.94ms. Allocated memory is still 211.8MB. Free memory was 65.1MB in the beginning and 62.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:18:52,954 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 113.2MB. Free memory is still 88.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 402.51ms. Allocated memory is still 211.8MB. Free memory was 174.5MB in the beginning and 152.0MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.32ms. Allocated memory is still 211.8MB. Free memory was 152.0MB in the beginning and 149.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.29ms. Allocated memory is still 211.8MB. Free memory was 149.7MB in the beginning and 148.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 329.22ms. Allocated memory is still 211.8MB. Free memory was 147.8MB in the beginning and 133.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5186.52ms. Allocated memory is still 211.8MB. Free memory was 133.1MB in the beginning and 65.1MB in the end (delta: 68.0MB). Peak memory consumption was 70.6MB. Max. memory is 16.1GB. * Witness Printer took 39.94ms. Allocated memory is still 211.8MB. Free memory was 65.1MB in the beginning and 62.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 108 PlacesBefore, 38 PlacesAfterwards, 100 TransitionsBefore, 29 TransitionsAfterwards, 1706 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 101 TotalNumberOfCompositions, 3125 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1936, independent: 1856, independent conditional: 0, independent unconditional: 1856, dependent: 80, dependent conditional: 0, dependent unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1206, independent: 1175, independent conditional: 0, independent unconditional: 1175, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1206, independent: 1167, independent conditional: 0, independent unconditional: 1167, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 39, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 68, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1936, independent: 681, independent conditional: 0, independent unconditional: 681, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 1206, unknown conditional: 0, unknown unconditional: 1206] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 67, Positive conditional cache size: 0, Positive unconditional cache size: 67, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 771]: 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, 122 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 347 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 347 mSDsluCounter, 139 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 89 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 890 IncrementalHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 50 mSDtfsCounter, 890 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=500occurred in iteration=5, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 1036 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 1144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-14 10:18:52,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d7da37-6741-460e-b4dc-f052291751ea/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