./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a 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_14735309-ae7a-43af-a724-e358de8ca6c1/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14735309-ae7a-43af-a724-e358de8ca6c1/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14735309-ae7a-43af-a724-e358de8ca6c1/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14735309-ae7a-43af-a724-e358de8ca6c1/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14735309-ae7a-43af-a724-e358de8ca6c1/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14735309-ae7a-43af-a724-e358de8ca6c1/bin/utaipan-ByfvJB40ur --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 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d --- 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-38b53e6 [2022-11-26 00:09:52,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:09:52,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:09:52,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:09:52,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:09:52,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:09:52,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:09:52,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:09:52,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:09:52,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:09:52,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:09:52,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:09:52,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:09:52,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:09:52,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:09:52,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:09:52,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:09:52,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:09:52,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:09:52,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:09:52,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:09:52,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:09:52,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:09:52,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:09:52,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:09:52,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:09:52,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:09:52,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:09:52,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:09:52,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:09:52,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:09:52,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:09:52,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:09:52,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:09:52,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:09:52,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:09:52,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:09:52,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:09:52,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:09:52,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:09:52,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:09:52,778 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14735309-ae7a-43af-a724-e358de8ca6c1/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-26 00:09:52,823 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:09:52,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:09:52,824 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:09:52,824 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:09:52,825 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:09:52,825 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:09:52,825 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:09:52,825 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:09:52,825 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:09:52,826 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:09:52,827 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:09:52,827 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:09:52,827 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:09:52,827 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:09:52,827 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:09:52,828 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:09:52,828 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:09:52,828 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:09:52,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-26 00:09:52,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-26 00:09:52,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:09:52,829 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:09:52,829 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:09:52,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:09:52,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:09:52,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:09:52,830 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-26 00:09:52,831 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-26 00:09:52,831 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-26 00:09:52,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:09:52,831 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:09:52,832 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:09:52,832 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:09:52,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:09:52,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:09:52,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:09:52,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:09:52,833 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:09:52,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:09:52,833 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:09:52,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:09:52,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:09:52,834 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_14735309-ae7a-43af-a724-e358de8ca6c1/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14735309-ae7a-43af-a724-e358de8ca6c1/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d [2022-11-26 00:09:53,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:09:53,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:09:53,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:09:53,192 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:09:53,192 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:09:53,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14735309-ae7a-43af-a724-e358de8ca6c1/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2022-11-26 00:09:56,192 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:09:56,495 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:09:56,496 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14735309-ae7a-43af-a724-e358de8ca6c1/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2022-11-26 00:09:56,504 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14735309-ae7a-43af-a724-e358de8ca6c1/bin/utaipan-ByfvJB40ur/data/73d98736f/8cab8181c78f4fb3bf492e0ab7bc54b2/FLAG176254a03 [2022-11-26 00:09:56,521 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14735309-ae7a-43af-a724-e358de8ca6c1/bin/utaipan-ByfvJB40ur/data/73d98736f/8cab8181c78f4fb3bf492e0ab7bc54b2 [2022-11-26 00:09:56,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:09:56,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:09:56,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:09:56,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:09:56,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:09:56,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:09:56" (1/1) ... [2022-11-26 00:09:56,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@692e04dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:56, skipping insertion in model container [2022-11-26 00:09:56,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:09:56" (1/1) ... [2022-11-26 00:09:56,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:09:56,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:09:56,751 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,753 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,763 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,767 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,781 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_14735309-ae7a-43af-a724-e358de8ca6c1/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2022-11-26 00:09:56,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:09:56,797 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:09:56,810 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,821 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,821 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,822 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,822 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,822 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:09:56,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:09:56,831 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_14735309-ae7a-43af-a724-e358de8ca6c1/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2022-11-26 00:09:56,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:09:56,846 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:09:56,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:56 WrapperNode [2022-11-26 00:09:56,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:09:56,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:09:56,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:09:56,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:09:56,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:56" (1/1) ... [2022-11-26 00:09:56,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:56" (1/1) ... [2022-11-26 00:09:56,892 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 198 [2022-11-26 00:09:56,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:09:56,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:09:56,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:09:56,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:09:56,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:56" (1/1) ... [2022-11-26 00:09:56,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:56" (1/1) ... [2022-11-26 00:09:56,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:56" (1/1) ... [2022-11-26 00:09:56,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:56" (1/1) ... [2022-11-26 00:09:56,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:56" (1/1) ... [2022-11-26 00:09:56,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:56" (1/1) ... [2022-11-26 00:09:56,918 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:56" (1/1) ... [2022-11-26 00:09:56,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:56" (1/1) ... [2022-11-26 00:09:56,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:09:56,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:09:56,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:09:56,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:09:56,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:56" (1/1) ... [2022-11-26 00:09:56,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:09:56,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14735309-ae7a-43af-a724-e358de8ca6c1/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:09:56,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14735309-ae7a-43af-a724-e358de8ca6c1/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:09:56,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14735309-ae7a-43af-a724-e358de8ca6c1/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:09:57,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:09:57,004 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-26 00:09:57,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-26 00:09:57,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-26 00:09:57,006 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-26 00:09:57,007 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-26 00:09:57,007 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-26 00:09:57,007 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-26 00:09:57,008 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-26 00:09:57,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:09:57,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:09:57,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:09:57,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-26 00:09:57,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-26 00:09:57,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:09:57,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:09:57,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:09:57,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:09:57,014 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-26 00:09:57,167 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:09:57,169 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:09:57,611 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:09:57,721 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:09:57,721 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:09:57,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:09:57 BoogieIcfgContainer [2022-11-26 00:09:57,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:09:57,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:09:57,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:09:57,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:09:57,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:09:56" (1/3) ... [2022-11-26 00:09:57,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ed686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:09:57, skipping insertion in model container [2022-11-26 00:09:57,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:09:56" (2/3) ... [2022-11-26 00:09:57,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ed686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:09:57, skipping insertion in model container [2022-11-26 00:09:57,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:09:57" (3/3) ... [2022-11-26 00:09:57,738 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2022-11-26 00:09:57,757 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:09:57,758 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-26 00:09:57,758 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-26 00:09:57,875 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-26 00:09:57,932 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:09:57,945 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 162 transitions, 356 flow [2022-11-26 00:09:57,949 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 162 transitions, 356 flow [2022-11-26 00:09:57,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 162 transitions, 356 flow [2022-11-26 00:09:58,025 INFO L130 PetriNetUnfolder]: 2/158 cut-off events. [2022-11-26 00:09:58,026 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-26 00:09:58,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 158 events. 2/158 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 112 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2022-11-26 00:09:58,033 INFO L119 LiptonReduction]: Number of co-enabled transitions 1702 [2022-11-26 00:10:07,119 INFO L134 LiptonReduction]: Checked pairs total: 4405 [2022-11-26 00:10:07,119 INFO L136 LiptonReduction]: Total number of compositions: 154 [2022-11-26 00:10:07,130 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 48 transitions, 128 flow [2022-11-26 00:10:07,230 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 803 states, 785 states have (on average 3.229299363057325) internal successors, (2535), 802 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:07,262 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:10:07,269 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;@68760104, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:10:07,269 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-26 00:10:07,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 803 states, 785 states have (on average 3.229299363057325) internal successors, (2535), 802 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:07,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-26 00:10:07,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:07,278 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-26 00:10:07,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:07,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:07,284 INFO L85 PathProgramCache]: Analyzing trace with hash 657, now seen corresponding path program 1 times [2022-11-26 00:10:07,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:07,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122033559] [2022-11-26 00:10:07,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:07,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:07,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:07,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:07,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122033559] [2022-11-26 00:10:07,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122033559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:07,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:07,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-26 00:10:07,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357071326] [2022-11-26 00:10:07,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:07,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-26 00:10:07,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:07,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-26 00:10:07,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:10:07,448 INFO L87 Difference]: Start difference. First operand has 803 states, 785 states have (on average 3.229299363057325) internal successors, (2535), 802 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:07,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:07,584 INFO L93 Difference]: Finished difference Result 800 states and 2532 transitions. [2022-11-26 00:10:07,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-26 00:10:07,587 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-26 00:10:07,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:07,616 INFO L225 Difference]: With dead ends: 800 [2022-11-26 00:10:07,616 INFO L226 Difference]: Without dead ends: 800 [2022-11-26 00:10:07,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:10:07,623 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:07,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:10:07,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-11-26 00:10:07,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 800. [2022-11-26 00:10:07,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 785 states have (on average 3.2254777070063696) internal successors, (2532), 799 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:07,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 2532 transitions. [2022-11-26 00:10:07,736 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 2532 transitions. Word has length 1 [2022-11-26 00:10:07,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:07,737 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 2532 transitions. [2022-11-26 00:10:07,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:07,737 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 2532 transitions. [2022-11-26 00:10:07,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-26 00:10:07,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:07,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-26 00:10:07,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:10:07,739 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:07,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:07,740 INFO L85 PathProgramCache]: Analyzing trace with hash 648407, now seen corresponding path program 1 times [2022-11-26 00:10:07,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:07,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211317544] [2022-11-26 00:10:07,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:07,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:08,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:08,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:08,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211317544] [2022-11-26 00:10:08,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211317544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:08,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:08,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:10:08,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510668041] [2022-11-26 00:10:08,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:08,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:10:08,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:08,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:10:08,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:10:08,325 INFO L87 Difference]: Start difference. First operand 800 states and 2532 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:08,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:08,413 INFO L93 Difference]: Finished difference Result 769 states and 2444 transitions. [2022-11-26 00:10:08,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:10:08,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-26 00:10:08,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:08,420 INFO L225 Difference]: With dead ends: 769 [2022-11-26 00:10:08,420 INFO L226 Difference]: Without dead ends: 769 [2022-11-26 00:10:08,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:10:08,423 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:08,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:10:08,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-11-26 00:10:08,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 769. [2022-11-26 00:10:08,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 756 states have (on average 3.232804232804233) internal successors, (2444), 768 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:08,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 2444 transitions. [2022-11-26 00:10:08,478 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 2444 transitions. Word has length 3 [2022-11-26 00:10:08,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:08,479 INFO L495 AbstractCegarLoop]: Abstraction has 769 states and 2444 transitions. [2022-11-26 00:10:08,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:08,480 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 2444 transitions. [2022-11-26 00:10:08,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-26 00:10:08,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:08,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-26 00:10:08,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:10:08,482 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:08,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:08,483 INFO L85 PathProgramCache]: Analyzing trace with hash 648408, now seen corresponding path program 1 times [2022-11-26 00:10:08,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:08,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893182372] [2022-11-26 00:10:08,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:08,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:08,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:08,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:08,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893182372] [2022-11-26 00:10:08,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893182372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:08,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:08,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:10:08,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941427126] [2022-11-26 00:10:08,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:08,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:10:08,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:08,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:10:08,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:10:08,731 INFO L87 Difference]: Start difference. First operand 769 states and 2444 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:08,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:08,808 INFO L93 Difference]: Finished difference Result 738 states and 2356 transitions. [2022-11-26 00:10:08,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:10:08,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-26 00:10:08,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:08,815 INFO L225 Difference]: With dead ends: 738 [2022-11-26 00:10:08,816 INFO L226 Difference]: Without dead ends: 738 [2022-11-26 00:10:08,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:10:08,822 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:08,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:10:08,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2022-11-26 00:10:08,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2022-11-26 00:10:08,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 727 states have (on average 3.2407152682255846) internal successors, (2356), 737 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:08,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 2356 transitions. [2022-11-26 00:10:08,860 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 2356 transitions. Word has length 3 [2022-11-26 00:10:08,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:08,861 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 2356 transitions. [2022-11-26 00:10:08,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:08,861 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 2356 transitions. [2022-11-26 00:10:08,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:10:08,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:08,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:10:08,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:10:08,862 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:08,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:08,863 INFO L85 PathProgramCache]: Analyzing trace with hash 623133131, now seen corresponding path program 1 times [2022-11-26 00:10:08,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:08,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181827628] [2022-11-26 00:10:08,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:08,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:09,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:09,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181827628] [2022-11-26 00:10:09,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181827628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:09,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:09,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:10:09,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196716620] [2022-11-26 00:10:09,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:09,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:10:09,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:09,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:10:09,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:10:09,035 INFO L87 Difference]: Start difference. First operand 738 states and 2356 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:09,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:09,111 INFO L93 Difference]: Finished difference Result 717 states and 2306 transitions. [2022-11-26 00:10:09,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:10:09,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 00:10:09,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:09,117 INFO L225 Difference]: With dead ends: 717 [2022-11-26 00:10:09,117 INFO L226 Difference]: Without dead ends: 717 [2022-11-26 00:10:09,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:10:09,121 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:09,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:10:09,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-11-26 00:10:09,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2022-11-26 00:10:09,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 708 states have (on average 3.2570621468926553) internal successors, (2306), 716 states have internal predecessors, (2306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:09,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 2306 transitions. [2022-11-26 00:10:09,182 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 2306 transitions. Word has length 5 [2022-11-26 00:10:09,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:09,183 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 2306 transitions. [2022-11-26 00:10:09,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:09,184 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 2306 transitions. [2022-11-26 00:10:09,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:10:09,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:09,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:10:09,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:10:09,185 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:09,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:09,185 INFO L85 PathProgramCache]: Analyzing trace with hash 623133132, now seen corresponding path program 1 times [2022-11-26 00:10:09,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:09,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434135107] [2022-11-26 00:10:09,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:09,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:09,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:09,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434135107] [2022-11-26 00:10:09,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434135107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:09,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:09,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:10:09,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921335397] [2022-11-26 00:10:09,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:09,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:10:09,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:09,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:10:09,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:10:09,263 INFO L87 Difference]: Start difference. First operand 717 states and 2306 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:09,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:09,320 INFO L93 Difference]: Finished difference Result 696 states and 2256 transitions. [2022-11-26 00:10:09,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:10:09,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 00:10:09,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:09,327 INFO L225 Difference]: With dead ends: 696 [2022-11-26 00:10:09,327 INFO L226 Difference]: Without dead ends: 696 [2022-11-26 00:10:09,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:10:09,328 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:09,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:10:09,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2022-11-26 00:10:09,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2022-11-26 00:10:09,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 689 states have (on average 3.274310595065312) internal successors, (2256), 695 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 2256 transitions. [2022-11-26 00:10:09,358 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 2256 transitions. Word has length 5 [2022-11-26 00:10:09,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:09,359 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 2256 transitions. [2022-11-26 00:10:09,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:09,359 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 2256 transitions. [2022-11-26 00:10:09,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:10:09,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:09,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:09,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:10:09,360 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:09,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:09,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1830498951, now seen corresponding path program 1 times [2022-11-26 00:10:09,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:09,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532762732] [2022-11-26 00:10:09,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:09,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:09,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:09,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532762732] [2022-11-26 00:10:09,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532762732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:09,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:09,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:10:09,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743064453] [2022-11-26 00:10:09,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:09,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:10:09,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:09,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:10:09,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:10:09,448 INFO L87 Difference]: Start difference. First operand 696 states and 2256 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:09,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:09,503 INFO L93 Difference]: Finished difference Result 657 states and 2140 transitions. [2022-11-26 00:10:09,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:10:09,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-26 00:10:09,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:09,508 INFO L225 Difference]: With dead ends: 657 [2022-11-26 00:10:09,509 INFO L226 Difference]: Without dead ends: 657 [2022-11-26 00:10:09,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:10:09,510 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:09,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:10:09,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-11-26 00:10:09,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2022-11-26 00:10:09,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 652 states have (on average 3.2822085889570554) internal successors, (2140), 656 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:09,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 2140 transitions. [2022-11-26 00:10:09,538 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 2140 transitions. Word has length 7 [2022-11-26 00:10:09,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:09,538 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 2140 transitions. [2022-11-26 00:10:09,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:09,539 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 2140 transitions. [2022-11-26 00:10:09,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:10:09,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:09,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:09,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:10:09,540 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:09,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:09,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1830498952, now seen corresponding path program 1 times [2022-11-26 00:10:09,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:09,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608040558] [2022-11-26 00:10:09,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:09,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:09,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:09,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:09,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608040558] [2022-11-26 00:10:09,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608040558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:09,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:09,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:10:09,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434365552] [2022-11-26 00:10:09,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:09,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:10:09,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:09,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:10:09,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:10:09,593 INFO L87 Difference]: Start difference. First operand 657 states and 2140 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:09,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:09,641 INFO L93 Difference]: Finished difference Result 618 states and 2024 transitions. [2022-11-26 00:10:09,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:10:09,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-26 00:10:09,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:09,646 INFO L225 Difference]: With dead ends: 618 [2022-11-26 00:10:09,646 INFO L226 Difference]: Without dead ends: 618 [2022-11-26 00:10:09,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:10:09,647 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:09,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:10:09,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2022-11-26 00:10:09,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2022-11-26 00:10:09,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 615 states have (on average 3.2910569105691057) internal successors, (2024), 617 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:09,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 2024 transitions. [2022-11-26 00:10:09,673 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 2024 transitions. Word has length 7 [2022-11-26 00:10:09,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:09,673 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 2024 transitions. [2022-11-26 00:10:09,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:09,674 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 2024 transitions. [2022-11-26 00:10:09,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:10:09,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:09,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:09,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:10:09,675 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:09,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:09,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1827085419, now seen corresponding path program 1 times [2022-11-26 00:10:09,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:09,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634805357] [2022-11-26 00:10:09,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:09,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:09,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:09,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634805357] [2022-11-26 00:10:09,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634805357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:09,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:09,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:10:09,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547575115] [2022-11-26 00:10:09,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:09,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:10:09,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:09,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:10:09,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:10:09,891 INFO L87 Difference]: Start difference. First operand 618 states and 2024 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:09,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:09,944 INFO L93 Difference]: Finished difference Result 510 states and 1619 transitions. [2022-11-26 00:10:09,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:10:09,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-26 00:10:09,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:09,948 INFO L225 Difference]: With dead ends: 510 [2022-11-26 00:10:09,948 INFO L226 Difference]: Without dead ends: 510 [2022-11-26 00:10:09,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:10:09,949 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:09,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:10:09,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-11-26 00:10:09,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2022-11-26 00:10:09,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 508 states have (on average 3.187007874015748) internal successors, (1619), 509 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:09,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 1619 transitions. [2022-11-26 00:10:09,971 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 1619 transitions. Word has length 9 [2022-11-26 00:10:09,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:09,971 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 1619 transitions. [2022-11-26 00:10:09,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:09,972 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1619 transitions. [2022-11-26 00:10:09,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:10:09,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:09,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:09,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:10:09,973 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:09,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:09,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1827085421, now seen corresponding path program 1 times [2022-11-26 00:10:09,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:09,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581046058] [2022-11-26 00:10:09,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:09,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:10,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:10,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:10,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581046058] [2022-11-26 00:10:10,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581046058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:10,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:10,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:10:10,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525123988] [2022-11-26 00:10:10,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:10,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:10:10,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:10,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:10:10,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:10:10,313 INFO L87 Difference]: Start difference. First operand 510 states and 1619 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) [2022-11-26 00:10:10,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:10,357 INFO L93 Difference]: Finished difference Result 402 states and 1214 transitions. [2022-11-26 00:10:10,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:10:10,358 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 [2022-11-26 00:10:10,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:10,361 INFO L225 Difference]: With dead ends: 402 [2022-11-26 00:10:10,361 INFO L226 Difference]: Without dead ends: 402 [2022-11-26 00:10:10,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:10:10,362 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 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 [2022-11-26 00:10:10,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:10:10,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-11-26 00:10:10,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2022-11-26 00:10:10,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.027431421446384) internal successors, (1214), 401 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:10,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1214 transitions. [2022-11-26 00:10:10,379 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1214 transitions. Word has length 9 [2022-11-26 00:10:10,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:10,379 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 1214 transitions. [2022-11-26 00:10:10,379 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) [2022-11-26 00:10:10,380 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1214 transitions. [2022-11-26 00:10:10,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:10,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:10,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:10,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 00:10:10,383 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:10,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:10,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1094574707, now seen corresponding path program 1 times [2022-11-26 00:10:10,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:10,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758101824] [2022-11-26 00:10:10,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:10,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:10,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:10,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:10,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758101824] [2022-11-26 00:10:10,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758101824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:10,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:10,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:10:10,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734561245] [2022-11-26 00:10:10,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:10,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:10:10,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:10,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:10:10,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:10:10,784 INFO L87 Difference]: Start difference. First operand 402 states and 1214 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:10,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:10,956 INFO L93 Difference]: Finished difference Result 458 states and 1442 transitions. [2022-11-26 00:10:10,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:10:10,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:10,959 INFO L225 Difference]: With dead ends: 458 [2022-11-26 00:10:10,959 INFO L226 Difference]: Without dead ends: 458 [2022-11-26 00:10:10,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:10:10,960 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:10,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:10:10,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-11-26 00:10:10,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 442. [2022-11-26 00:10:10,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 3.106575963718821) internal successors, (1370), 441 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:10,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1370 transitions. [2022-11-26 00:10:10,978 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1370 transitions. Word has length 26 [2022-11-26 00:10:10,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:10,978 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 1370 transitions. [2022-11-26 00:10:10,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:10,978 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1370 transitions. [2022-11-26 00:10:10,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:10,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:10,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:10,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-26 00:10:10,981 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:10,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:10,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1873037779, now seen corresponding path program 2 times [2022-11-26 00:10:10,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:10,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101747992] [2022-11-26 00:10:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:10,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:11,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:11,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:11,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101747992] [2022-11-26 00:10:11,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101747992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:11,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:11,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:10:11,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235918499] [2022-11-26 00:10:11,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:11,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:10:11,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:11,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:10:11,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:10:11,318 INFO L87 Difference]: Start difference. First operand 442 states and 1370 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:11,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:11,472 INFO L93 Difference]: Finished difference Result 458 states and 1410 transitions. [2022-11-26 00:10:11,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:10:11,473 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:11,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:11,476 INFO L225 Difference]: With dead ends: 458 [2022-11-26 00:10:11,476 INFO L226 Difference]: Without dead ends: 458 [2022-11-26 00:10:11,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:10:11,477 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:11,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:10:11,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-11-26 00:10:11,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2022-11-26 00:10:11,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 3.085339168490153) internal successors, (1410), 457 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 1410 transitions. [2022-11-26 00:10:11,493 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 1410 transitions. Word has length 26 [2022-11-26 00:10:11,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:11,494 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 1410 transitions. [2022-11-26 00:10:11,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:11,494 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 1410 transitions. [2022-11-26 00:10:11,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:11,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:11,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:11,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-26 00:10:11,496 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:11,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:11,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1259618011, now seen corresponding path program 3 times [2022-11-26 00:10:11,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:11,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490189823] [2022-11-26 00:10:11,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:11,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:11,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:11,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:11,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490189823] [2022-11-26 00:10:11,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490189823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:11,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:11,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:10:11,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717962365] [2022-11-26 00:10:11,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:11,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:10:11,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:11,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:10:11,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:10:11,834 INFO L87 Difference]: Start difference. First operand 458 states and 1410 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:12,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:12,037 INFO L93 Difference]: Finished difference Result 466 states and 1426 transitions. [2022-11-26 00:10:12,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:10:12,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:12,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:12,041 INFO L225 Difference]: With dead ends: 466 [2022-11-26 00:10:12,041 INFO L226 Difference]: Without dead ends: 466 [2022-11-26 00:10:12,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:12,042 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:12,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:12,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-11-26 00:10:12,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2022-11-26 00:10:12,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 3.066666666666667) internal successors, (1426), 465 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:12,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1426 transitions. [2022-11-26 00:10:12,059 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1426 transitions. Word has length 26 [2022-11-26 00:10:12,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:12,060 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 1426 transitions. [2022-11-26 00:10:12,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:12,060 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1426 transitions. [2022-11-26 00:10:12,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:12,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:12,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:12,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-26 00:10:12,062 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:12,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:12,063 INFO L85 PathProgramCache]: Analyzing trace with hash 444186711, now seen corresponding path program 4 times [2022-11-26 00:10:12,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:12,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366421628] [2022-11-26 00:10:12,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:12,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:12,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:12,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366421628] [2022-11-26 00:10:12,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366421628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:12,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:12,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:10:12,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935547527] [2022-11-26 00:10:12,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:12,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:10:12,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:12,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:10:12,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:10:12,358 INFO L87 Difference]: Start difference. First operand 466 states and 1426 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:12,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:12,595 INFO L93 Difference]: Finished difference Result 486 states and 1459 transitions. [2022-11-26 00:10:12,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:10:12,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:12,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:12,598 INFO L225 Difference]: With dead ends: 486 [2022-11-26 00:10:12,599 INFO L226 Difference]: Without dead ends: 486 [2022-11-26 00:10:12,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:10:12,600 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:12,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:12,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-11-26 00:10:12,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2022-11-26 00:10:12,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 485 states have (on average 3.0082474226804123) internal successors, (1459), 485 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:12,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1459 transitions. [2022-11-26 00:10:12,621 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1459 transitions. Word has length 26 [2022-11-26 00:10:12,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:12,621 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 1459 transitions. [2022-11-26 00:10:12,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:12,622 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1459 transitions. [2022-11-26 00:10:12,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:12,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:12,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:12,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-26 00:10:12,625 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:12,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:12,625 INFO L85 PathProgramCache]: Analyzing trace with hash 719679405, now seen corresponding path program 5 times [2022-11-26 00:10:12,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:12,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865033478] [2022-11-26 00:10:12,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:12,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:13,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:13,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:13,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865033478] [2022-11-26 00:10:13,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865033478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:13,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:13,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:13,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810675279] [2022-11-26 00:10:13,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:13,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:13,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:13,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:13,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:13,018 INFO L87 Difference]: Start difference. First operand 486 states and 1459 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:13,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:13,311 INFO L93 Difference]: Finished difference Result 506 states and 1493 transitions. [2022-11-26 00:10:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:10:13,312 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:13,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:13,316 INFO L225 Difference]: With dead ends: 506 [2022-11-26 00:10:13,317 INFO L226 Difference]: Without dead ends: 506 [2022-11-26 00:10:13,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:10:13,318 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:13,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:10:13,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-11-26 00:10:13,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2022-11-26 00:10:13,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 505 states have (on average 2.9564356435643564) internal successors, (1493), 505 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:13,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 1493 transitions. [2022-11-26 00:10:13,338 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 1493 transitions. Word has length 26 [2022-11-26 00:10:13,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:13,338 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 1493 transitions. [2022-11-26 00:10:13,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:13,338 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 1493 transitions. [2022-11-26 00:10:13,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:13,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:13,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:13,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-26 00:10:13,341 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:13,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:13,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1355814577, now seen corresponding path program 6 times [2022-11-26 00:10:13,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:13,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864973974] [2022-11-26 00:10:13,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:13,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:14,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:14,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864973974] [2022-11-26 00:10:14,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864973974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:14,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:14,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:10:14,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288215278] [2022-11-26 00:10:14,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:14,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:10:14,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:14,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:10:14,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:10:14,142 INFO L87 Difference]: Start difference. First operand 506 states and 1493 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:14,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:14,485 INFO L93 Difference]: Finished difference Result 699 states and 1973 transitions. [2022-11-26 00:10:14,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:10:14,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:14,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:14,488 INFO L225 Difference]: With dead ends: 699 [2022-11-26 00:10:14,488 INFO L226 Difference]: Without dead ends: 464 [2022-11-26 00:10:14,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:10:14,489 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 97 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:14,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 0 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:10:14,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-11-26 00:10:14,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 440. [2022-11-26 00:10:14,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 2.7471526195899774) internal successors, (1206), 439 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:14,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1206 transitions. [2022-11-26 00:10:14,513 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1206 transitions. Word has length 26 [2022-11-26 00:10:14,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:14,513 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 1206 transitions. [2022-11-26 00:10:14,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:14,514 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1206 transitions. [2022-11-26 00:10:14,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:14,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:14,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:14,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-26 00:10:14,518 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:14,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:14,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1338841837, now seen corresponding path program 7 times [2022-11-26 00:10:14,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:14,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793918238] [2022-11-26 00:10:14,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:14,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:14,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:14,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:14,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793918238] [2022-11-26 00:10:14,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793918238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:14,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:14,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:10:14,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047839430] [2022-11-26 00:10:14,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:14,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:10:14,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:14,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:10:14,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:10:14,813 INFO L87 Difference]: Start difference. First operand 440 states and 1206 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:14,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:14,995 INFO L93 Difference]: Finished difference Result 452 states and 1225 transitions. [2022-11-26 00:10:14,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:10:14,995 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:14,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:14,998 INFO L225 Difference]: With dead ends: 452 [2022-11-26 00:10:14,998 INFO L226 Difference]: Without dead ends: 408 [2022-11-26 00:10:14,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:10:14,999 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:14,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:15,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-11-26 00:10:15,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2022-11-26 00:10:15,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 2.773955773955774) internal successors, (1129), 407 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) [2022-11-26 00:10:15,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1129 transitions. [2022-11-26 00:10:15,016 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1129 transitions. Word has length 26 [2022-11-26 00:10:15,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:15,016 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 1129 transitions. [2022-11-26 00:10:15,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:15,017 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1129 transitions. [2022-11-26 00:10:15,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:15,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:15,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:15,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-26 00:10:15,019 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:15,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:15,021 INFO L85 PathProgramCache]: Analyzing trace with hash 637282665, now seen corresponding path program 8 times [2022-11-26 00:10:15,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:15,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304867870] [2022-11-26 00:10:15,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:15,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:15,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:15,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304867870] [2022-11-26 00:10:15,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304867870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:15,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:15,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:10:15,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563656742] [2022-11-26 00:10:15,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:15,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:10:15,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:15,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:10:15,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:10:15,368 INFO L87 Difference]: Start difference. First operand 408 states and 1129 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:15,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:15,522 INFO L93 Difference]: Finished difference Result 430 states and 1198 transitions. [2022-11-26 00:10:15,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:10:15,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:15,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:15,525 INFO L225 Difference]: With dead ends: 430 [2022-11-26 00:10:15,525 INFO L226 Difference]: Without dead ends: 430 [2022-11-26 00:10:15,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:10:15,526 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:15,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:10:15,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-11-26 00:10:15,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 418. [2022-11-26 00:10:15,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 2.7673860911270984) internal successors, (1154), 417 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:15,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1154 transitions. [2022-11-26 00:10:15,542 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1154 transitions. Word has length 26 [2022-11-26 00:10:15,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:15,542 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 1154 transitions. [2022-11-26 00:10:15,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:15,543 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1154 transitions. [2022-11-26 00:10:15,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:15,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:15,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:15,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-26 00:10:15,545 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:15,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:15,547 INFO L85 PathProgramCache]: Analyzing trace with hash -690072145, now seen corresponding path program 9 times [2022-11-26 00:10:15,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:15,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058132267] [2022-11-26 00:10:15,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:15,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:15,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:15,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:15,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058132267] [2022-11-26 00:10:15,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058132267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:15,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:15,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:10:15,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478450348] [2022-11-26 00:10:15,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:15,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:10:15,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:15,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:10:15,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:10:15,791 INFO L87 Difference]: Start difference. First operand 418 states and 1154 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:15,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:15,916 INFO L93 Difference]: Finished difference Result 404 states and 1112 transitions. [2022-11-26 00:10:15,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:10:15,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:15,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:15,919 INFO L225 Difference]: With dead ends: 404 [2022-11-26 00:10:15,919 INFO L226 Difference]: Without dead ends: 404 [2022-11-26 00:10:15,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:10:15,920 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:15,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:10:15,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-11-26 00:10:15,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2022-11-26 00:10:15,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 2.759305210918114) internal successors, (1112), 403 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:15,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 1112 transitions. [2022-11-26 00:10:15,935 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 1112 transitions. Word has length 26 [2022-11-26 00:10:15,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:15,936 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 1112 transitions. [2022-11-26 00:10:15,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:15,936 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 1112 transitions. [2022-11-26 00:10:15,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:15,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:15,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:15,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-26 00:10:15,938 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:15,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:15,939 INFO L85 PathProgramCache]: Analyzing trace with hash 779328247, now seen corresponding path program 10 times [2022-11-26 00:10:15,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:15,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872209668] [2022-11-26 00:10:15,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:15,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:16,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:16,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:16,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872209668] [2022-11-26 00:10:16,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872209668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:16,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:16,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:10:16,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526157956] [2022-11-26 00:10:16,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:16,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:10:16,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:16,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:10:16,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:10:16,347 INFO L87 Difference]: Start difference. First operand 404 states and 1112 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:16,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:16,523 INFO L93 Difference]: Finished difference Result 414 states and 1125 transitions. [2022-11-26 00:10:16,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:10:16,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:16,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:16,526 INFO L225 Difference]: With dead ends: 414 [2022-11-26 00:10:16,526 INFO L226 Difference]: Without dead ends: 414 [2022-11-26 00:10:16,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:16,527 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:16,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:10:16,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-11-26 00:10:16,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2022-11-26 00:10:16,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 2.723970944309927) internal successors, (1125), 413 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:16,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1125 transitions. [2022-11-26 00:10:16,543 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 1125 transitions. Word has length 26 [2022-11-26 00:10:16,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:16,544 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 1125 transitions. [2022-11-26 00:10:16,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:16,544 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 1125 transitions. [2022-11-26 00:10:16,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:16,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:16,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:16,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-26 00:10:16,547 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:16,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:16,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1528830619, now seen corresponding path program 11 times [2022-11-26 00:10:16,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:16,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085871329] [2022-11-26 00:10:16,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:16,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:16,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:16,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085871329] [2022-11-26 00:10:16,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085871329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:16,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:16,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:10:16,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897496994] [2022-11-26 00:10:16,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:16,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:10:16,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:16,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:10:16,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:10:16,871 INFO L87 Difference]: Start difference. First operand 414 states and 1125 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:17,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:17,089 INFO L93 Difference]: Finished difference Result 446 states and 1202 transitions. [2022-11-26 00:10:17,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:10:17,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:17,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:17,093 INFO L225 Difference]: With dead ends: 446 [2022-11-26 00:10:17,093 INFO L226 Difference]: Without dead ends: 438 [2022-11-26 00:10:17,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:10:17,094 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:17,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:17,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-26 00:10:17,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 418. [2022-11-26 00:10:17,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 2.721822541966427) internal successors, (1135), 417 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:17,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1135 transitions. [2022-11-26 00:10:17,111 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1135 transitions. Word has length 26 [2022-11-26 00:10:17,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:17,111 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 1135 transitions. [2022-11-26 00:10:17,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:17,111 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1135 transitions. [2022-11-26 00:10:17,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:17,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:17,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:17,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-26 00:10:17,114 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:17,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:17,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1041367189, now seen corresponding path program 12 times [2022-11-26 00:10:17,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:17,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934196398] [2022-11-26 00:10:17,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:17,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:17,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:17,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:17,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934196398] [2022-11-26 00:10:17,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934196398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:17,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:17,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:10:17,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276184684] [2022-11-26 00:10:17,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:17,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:10:17,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:17,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:10:17,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:10:17,445 INFO L87 Difference]: Start difference. First operand 418 states and 1135 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:17,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:17,651 INFO L93 Difference]: Finished difference Result 436 states and 1165 transitions. [2022-11-26 00:10:17,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:10:17,652 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:17,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:17,655 INFO L225 Difference]: With dead ends: 436 [2022-11-26 00:10:17,655 INFO L226 Difference]: Without dead ends: 428 [2022-11-26 00:10:17,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:10:17,656 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:17,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:17,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-11-26 00:10:17,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 418. [2022-11-26 00:10:17,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 2.7170263788968825) internal successors, (1133), 417 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:17,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1133 transitions. [2022-11-26 00:10:17,671 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1133 transitions. Word has length 26 [2022-11-26 00:10:17,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:17,672 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 1133 transitions. [2022-11-26 00:10:17,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:17,672 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1133 transitions. [2022-11-26 00:10:17,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:17,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:17,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:17,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-26 00:10:17,674 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:17,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:17,675 INFO L85 PathProgramCache]: Analyzing trace with hash 221933183, now seen corresponding path program 13 times [2022-11-26 00:10:17,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:17,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63063346] [2022-11-26 00:10:17,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:17,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:17,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:17,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63063346] [2022-11-26 00:10:17,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63063346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:17,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:17,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:10:17,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832785704] [2022-11-26 00:10:17,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:17,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:10:17,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:17,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:10:17,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:10:17,969 INFO L87 Difference]: Start difference. First operand 418 states and 1133 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:18,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:18,168 INFO L93 Difference]: Finished difference Result 460 states and 1237 transitions. [2022-11-26 00:10:18,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:10:18,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:18,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:18,171 INFO L225 Difference]: With dead ends: 460 [2022-11-26 00:10:18,171 INFO L226 Difference]: Without dead ends: 460 [2022-11-26 00:10:18,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:18,172 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:18,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:18,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-11-26 00:10:18,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 442. [2022-11-26 00:10:18,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 2.689342403628118) internal successors, (1186), 441 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:18,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1186 transitions. [2022-11-26 00:10:18,188 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1186 transitions. Word has length 26 [2022-11-26 00:10:18,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:18,188 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 1186 transitions. [2022-11-26 00:10:18,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:18,189 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1186 transitions. [2022-11-26 00:10:18,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:18,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:18,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:18,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-26 00:10:18,192 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:18,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:18,193 INFO L85 PathProgramCache]: Analyzing trace with hash -2086225683, now seen corresponding path program 14 times [2022-11-26 00:10:18,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:18,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75240253] [2022-11-26 00:10:18,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:18,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:18,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:18,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75240253] [2022-11-26 00:10:18,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75240253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:18,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:18,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:10:18,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442375815] [2022-11-26 00:10:18,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:18,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:10:18,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:18,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:10:18,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:10:18,511 INFO L87 Difference]: Start difference. First operand 442 states and 1186 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:18,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:18,761 INFO L93 Difference]: Finished difference Result 770 states and 2031 transitions. [2022-11-26 00:10:18,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:10:18,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:18,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:18,766 INFO L225 Difference]: With dead ends: 770 [2022-11-26 00:10:18,766 INFO L226 Difference]: Without dead ends: 762 [2022-11-26 00:10:18,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:10:18,767 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:18,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:18,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-11-26 00:10:18,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 458. [2022-11-26 00:10:18,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 2.6958424507658645) internal successors, (1232), 457 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:18,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 1232 transitions. [2022-11-26 00:10:18,788 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 1232 transitions. Word has length 26 [2022-11-26 00:10:18,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:18,789 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 1232 transitions. [2022-11-26 00:10:18,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:18,789 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 1232 transitions. [2022-11-26 00:10:18,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:18,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:18,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:18,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-26 00:10:18,791 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:18,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:18,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1177912339, now seen corresponding path program 15 times [2022-11-26 00:10:18,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:18,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181855925] [2022-11-26 00:10:18,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:18,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:19,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:19,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:19,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181855925] [2022-11-26 00:10:19,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181855925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:19,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:19,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:10:19,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322394948] [2022-11-26 00:10:19,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:19,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:10:19,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:19,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:10:19,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:10:19,114 INFO L87 Difference]: Start difference. First operand 458 states and 1232 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:19,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:19,357 INFO L93 Difference]: Finished difference Result 496 states and 1317 transitions. [2022-11-26 00:10:19,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:10:19,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:19,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:19,360 INFO L225 Difference]: With dead ends: 496 [2022-11-26 00:10:19,361 INFO L226 Difference]: Without dead ends: 476 [2022-11-26 00:10:19,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:19,361 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:19,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:19,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-11-26 00:10:19,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 454. [2022-11-26 00:10:19,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 2.69757174392936) internal successors, (1222), 453 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:19,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 1222 transitions. [2022-11-26 00:10:19,394 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 1222 transitions. Word has length 26 [2022-11-26 00:10:19,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:19,395 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 1222 transitions. [2022-11-26 00:10:19,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:19,396 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 1222 transitions. [2022-11-26 00:10:19,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:19,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:19,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:19,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-26 00:10:19,398 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:19,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:19,399 INFO L85 PathProgramCache]: Analyzing trace with hash 571111379, now seen corresponding path program 16 times [2022-11-26 00:10:19,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:19,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845950678] [2022-11-26 00:10:19,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:19,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:19,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:19,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:19,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845950678] [2022-11-26 00:10:19,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845950678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:19,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:19,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:10:19,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491951194] [2022-11-26 00:10:19,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:19,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:10:19,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:19,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:10:19,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:10:19,701 INFO L87 Difference]: Start difference. First operand 454 states and 1222 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:19,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:19,962 INFO L93 Difference]: Finished difference Result 482 states and 1273 transitions. [2022-11-26 00:10:19,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:10:19,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:19,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:19,964 INFO L225 Difference]: With dead ends: 482 [2022-11-26 00:10:19,964 INFO L226 Difference]: Without dead ends: 460 [2022-11-26 00:10:19,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:19,965 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:19,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:19,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-11-26 00:10:19,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 448. [2022-11-26 00:10:19,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 2.7024608501118568) internal successors, (1208), 447 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:20,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1208 transitions. [2022-11-26 00:10:20,001 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 1208 transitions. Word has length 26 [2022-11-26 00:10:20,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:20,001 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 1208 transitions. [2022-11-26 00:10:20,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:20,002 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1208 transitions. [2022-11-26 00:10:20,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:20,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:20,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:20,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-26 00:10:20,004 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:20,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:20,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1090400177, now seen corresponding path program 17 times [2022-11-26 00:10:20,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:20,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67129886] [2022-11-26 00:10:20,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:20,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:20,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:20,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:20,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67129886] [2022-11-26 00:10:20,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67129886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:20,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:20,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:20,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165275408] [2022-11-26 00:10:20,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:20,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:20,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:20,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:20,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:20,358 INFO L87 Difference]: Start difference. First operand 448 states and 1208 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:20,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:20,650 INFO L93 Difference]: Finished difference Result 744 states and 1949 transitions. [2022-11-26 00:10:20,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:10:20,650 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:20,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:20,654 INFO L225 Difference]: With dead ends: 744 [2022-11-26 00:10:20,654 INFO L226 Difference]: Without dead ends: 736 [2022-11-26 00:10:20,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:10:20,655 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:20,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:20,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-11-26 00:10:20,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 476. [2022-11-26 00:10:20,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 2.6736842105263157) internal successors, (1270), 475 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:20,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1270 transitions. [2022-11-26 00:10:20,679 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1270 transitions. Word has length 26 [2022-11-26 00:10:20,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:20,681 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 1270 transitions. [2022-11-26 00:10:20,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:20,681 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1270 transitions. [2022-11-26 00:10:20,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:20,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:20,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:20,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-26 00:10:20,684 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:20,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:20,685 INFO L85 PathProgramCache]: Analyzing trace with hash 521453215, now seen corresponding path program 18 times [2022-11-26 00:10:20,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:20,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379043412] [2022-11-26 00:10:20,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:20,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:20,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:20,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379043412] [2022-11-26 00:10:20,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379043412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:20,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:20,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:10:20,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030039247] [2022-11-26 00:10:20,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:20,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:10:20,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:20,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:10:20,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:10:20,920 INFO L87 Difference]: Start difference. First operand 476 states and 1270 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:21,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:21,083 INFO L93 Difference]: Finished difference Result 486 states and 1288 transitions. [2022-11-26 00:10:21,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:10:21,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:21,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:21,086 INFO L225 Difference]: With dead ends: 486 [2022-11-26 00:10:21,086 INFO L226 Difference]: Without dead ends: 486 [2022-11-26 00:10:21,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:10:21,087 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:21,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:10:21,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-11-26 00:10:21,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2022-11-26 00:10:21,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 485 states have (on average 2.6556701030927834) internal successors, (1288), 485 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:21,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1288 transitions. [2022-11-26 00:10:21,103 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1288 transitions. Word has length 26 [2022-11-26 00:10:21,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:21,104 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 1288 transitions. [2022-11-26 00:10:21,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:21,104 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1288 transitions. [2022-11-26 00:10:21,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:21,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:21,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:21,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-26 00:10:21,106 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:21,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:21,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1964783715, now seen corresponding path program 19 times [2022-11-26 00:10:21,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:21,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043452867] [2022-11-26 00:10:21,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:21,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:21,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:21,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:21,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043452867] [2022-11-26 00:10:21,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043452867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:21,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:21,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:21,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155370163] [2022-11-26 00:10:21,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:21,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:21,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:21,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:21,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:21,373 INFO L87 Difference]: Start difference. First operand 486 states and 1288 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:21,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:21,759 INFO L93 Difference]: Finished difference Result 606 states and 1591 transitions. [2022-11-26 00:10:21,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:10:21,760 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:21,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:21,763 INFO L225 Difference]: With dead ends: 606 [2022-11-26 00:10:21,763 INFO L226 Difference]: Without dead ends: 598 [2022-11-26 00:10:21,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:10:21,763 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:21,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:10:21,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-11-26 00:10:21,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 510. [2022-11-26 00:10:21,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 2.638506876227898) internal successors, (1343), 509 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:21,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 1343 transitions. [2022-11-26 00:10:21,789 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 1343 transitions. Word has length 26 [2022-11-26 00:10:21,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:21,789 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 1343 transitions. [2022-11-26 00:10:21,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:21,789 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1343 transitions. [2022-11-26 00:10:21,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:21,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:21,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:21,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-26 00:10:21,792 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:21,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:21,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1844545661, now seen corresponding path program 20 times [2022-11-26 00:10:21,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:21,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301439768] [2022-11-26 00:10:21,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:21,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:22,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:22,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:22,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301439768] [2022-11-26 00:10:22,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301439768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:22,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:22,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:22,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437181240] [2022-11-26 00:10:22,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:22,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:22,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:22,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:22,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:22,071 INFO L87 Difference]: Start difference. First operand 510 states and 1343 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:22,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:22,352 INFO L93 Difference]: Finished difference Result 524 states and 1366 transitions. [2022-11-26 00:10:22,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:10:22,353 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:22,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:22,356 INFO L225 Difference]: With dead ends: 524 [2022-11-26 00:10:22,356 INFO L226 Difference]: Without dead ends: 514 [2022-11-26 00:10:22,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:10:22,357 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:22,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:22,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-11-26 00:10:22,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 508. [2022-11-26 00:10:22,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 2.63905325443787) internal successors, (1338), 507 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:22,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1338 transitions. [2022-11-26 00:10:22,382 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1338 transitions. Word has length 26 [2022-11-26 00:10:22,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:22,383 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 1338 transitions. [2022-11-26 00:10:22,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:22,383 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1338 transitions. [2022-11-26 00:10:22,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:22,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:22,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:22,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-26 00:10:22,385 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:22,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:22,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1603015273, now seen corresponding path program 21 times [2022-11-26 00:10:22,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:22,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616255870] [2022-11-26 00:10:22,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:22,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:22,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:22,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:22,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616255870] [2022-11-26 00:10:22,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616255870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:22,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:22,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:10:22,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080054650] [2022-11-26 00:10:22,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:22,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:10:22,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:22,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:10:22,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:10:22,640 INFO L87 Difference]: Start difference. First operand 508 states and 1338 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:22,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:22,873 INFO L93 Difference]: Finished difference Result 812 states and 2045 transitions. [2022-11-26 00:10:22,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:10:22,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:22,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:22,877 INFO L225 Difference]: With dead ends: 812 [2022-11-26 00:10:22,877 INFO L226 Difference]: Without dead ends: 804 [2022-11-26 00:10:22,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:10:22,878 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:22,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:22,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-11-26 00:10:22,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 520. [2022-11-26 00:10:22,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 519 states have (on average 2.6242774566473988) internal successors, (1362), 519 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:22,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 1362 transitions. [2022-11-26 00:10:22,923 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 1362 transitions. Word has length 26 [2022-11-26 00:10:22,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:22,923 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 1362 transitions. [2022-11-26 00:10:22,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:22,924 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 1362 transitions. [2022-11-26 00:10:22,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:22,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:22,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:22,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-26 00:10:22,926 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:22,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:22,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1416620721, now seen corresponding path program 22 times [2022-11-26 00:10:22,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:22,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135169283] [2022-11-26 00:10:22,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:22,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:23,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:23,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:23,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135169283] [2022-11-26 00:10:23,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135169283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:23,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:23,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:10:23,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310984327] [2022-11-26 00:10:23,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:23,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:10:23,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:23,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:10:23,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:10:23,190 INFO L87 Difference]: Start difference. First operand 520 states and 1362 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:23,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:23,457 INFO L93 Difference]: Finished difference Result 602 states and 1429 transitions. [2022-11-26 00:10:23,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:10:23,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:23,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:23,460 INFO L225 Difference]: With dead ends: 602 [2022-11-26 00:10:23,460 INFO L226 Difference]: Without dead ends: 588 [2022-11-26 00:10:23,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:10:23,461 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:23,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:23,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-11-26 00:10:23,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 420. [2022-11-26 00:10:23,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 2.5011933174224343) internal successors, (1048), 419 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:23,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1048 transitions. [2022-11-26 00:10:23,477 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1048 transitions. Word has length 26 [2022-11-26 00:10:23,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:23,478 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 1048 transitions. [2022-11-26 00:10:23,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:23,478 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1048 transitions. [2022-11-26 00:10:23,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:23,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:23,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:23,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-26 00:10:23,480 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:23,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:23,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1001781233, now seen corresponding path program 23 times [2022-11-26 00:10:23,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:23,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306339204] [2022-11-26 00:10:23,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:23,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:23,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:23,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:23,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306339204] [2022-11-26 00:10:23,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306339204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:23,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:23,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:23,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131080741] [2022-11-26 00:10:23,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:23,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:23,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:23,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:23,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:23,770 INFO L87 Difference]: Start difference. First operand 420 states and 1048 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:24,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:24,120 INFO L93 Difference]: Finished difference Result 636 states and 1522 transitions. [2022-11-26 00:10:24,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:10:24,121 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:24,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:24,124 INFO L225 Difference]: With dead ends: 636 [2022-11-26 00:10:24,124 INFO L226 Difference]: Without dead ends: 628 [2022-11-26 00:10:24,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:10:24,125 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:24,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:10:24,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-11-26 00:10:24,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 418. [2022-11-26 00:10:24,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 2.501199040767386) internal successors, (1043), 417 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:24,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1043 transitions. [2022-11-26 00:10:24,144 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1043 transitions. Word has length 26 [2022-11-26 00:10:24,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:24,144 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 1043 transitions. [2022-11-26 00:10:24,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:24,145 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1043 transitions. [2022-11-26 00:10:24,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:24,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:24,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:24,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-26 00:10:24,147 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:24,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:24,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1544086183, now seen corresponding path program 24 times [2022-11-26 00:10:24,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:24,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611049913] [2022-11-26 00:10:24,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:24,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:24,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:24,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:24,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611049913] [2022-11-26 00:10:24,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611049913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:24,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:24,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:10:24,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201142919] [2022-11-26 00:10:24,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:24,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:10:24,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:24,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:10:24,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:10:24,421 INFO L87 Difference]: Start difference. First operand 418 states and 1043 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:24,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:24,715 INFO L93 Difference]: Finished difference Result 632 states and 1496 transitions. [2022-11-26 00:10:24,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:10:24,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:24,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:24,718 INFO L225 Difference]: With dead ends: 632 [2022-11-26 00:10:24,718 INFO L226 Difference]: Without dead ends: 612 [2022-11-26 00:10:24,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:10:24,719 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:24,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:10:24,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-11-26 00:10:24,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 416. [2022-11-26 00:10:24,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 2.4481927710843374) internal successors, (1016), 415 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:24,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1016 transitions. [2022-11-26 00:10:24,735 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1016 transitions. Word has length 26 [2022-11-26 00:10:24,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:24,736 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 1016 transitions. [2022-11-26 00:10:24,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:24,736 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1016 transitions. [2022-11-26 00:10:24,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:24,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:24,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:24,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-26 00:10:24,738 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:24,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:24,738 INFO L85 PathProgramCache]: Analyzing trace with hash -483308093, now seen corresponding path program 25 times [2022-11-26 00:10:24,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:24,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644995935] [2022-11-26 00:10:24,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:24,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:24,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:24,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:24,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644995935] [2022-11-26 00:10:24,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644995935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:24,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:24,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:24,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995635251] [2022-11-26 00:10:24,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:24,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:24,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:24,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:24,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:24,990 INFO L87 Difference]: Start difference. First operand 416 states and 1016 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:25,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:25,339 INFO L93 Difference]: Finished difference Result 652 states and 1527 transitions. [2022-11-26 00:10:25,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:10:25,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:25,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:25,341 INFO L225 Difference]: With dead ends: 652 [2022-11-26 00:10:25,342 INFO L226 Difference]: Without dead ends: 616 [2022-11-26 00:10:25,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:10:25,342 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:25,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:10:25,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-11-26 00:10:25,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 410. [2022-11-26 00:10:25,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 2.43520782396088) internal successors, (996), 409 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:25,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 996 transitions. [2022-11-26 00:10:25,362 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 996 transitions. Word has length 26 [2022-11-26 00:10:25,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:25,363 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 996 transitions. [2022-11-26 00:10:25,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:25,363 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 996 transitions. [2022-11-26 00:10:25,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:25,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:25,365 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:25,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-26 00:10:25,366 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:25,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:25,366 INFO L85 PathProgramCache]: Analyzing trace with hash -637674511, now seen corresponding path program 26 times [2022-11-26 00:10:25,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:25,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774593916] [2022-11-26 00:10:25,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:25,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:25,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:25,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774593916] [2022-11-26 00:10:25,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774593916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:25,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:25,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:25,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502101439] [2022-11-26 00:10:25,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:25,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:25,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:25,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:25,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:25,778 INFO L87 Difference]: Start difference. First operand 410 states and 996 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:26,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:26,062 INFO L93 Difference]: Finished difference Result 426 states and 1019 transitions. [2022-11-26 00:10:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:10:26,062 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:26,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:26,064 INFO L225 Difference]: With dead ends: 426 [2022-11-26 00:10:26,064 INFO L226 Difference]: Without dead ends: 414 [2022-11-26 00:10:26,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:10:26,065 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:26,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:26,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-11-26 00:10:26,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 408. [2022-11-26 00:10:26,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 2.42997542997543) internal successors, (989), 407 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 989 transitions. [2022-11-26 00:10:26,084 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 989 transitions. Word has length 26 [2022-11-26 00:10:26,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:26,084 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 989 transitions. [2022-11-26 00:10:26,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:26,085 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 989 transitions. [2022-11-26 00:10:26,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:26,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:26,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:26,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-26 00:10:26,088 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:26,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:26,088 INFO L85 PathProgramCache]: Analyzing trace with hash 625787449, now seen corresponding path program 27 times [2022-11-26 00:10:26,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:26,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551436667] [2022-11-26 00:10:26,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:26,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:26,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:26,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551436667] [2022-11-26 00:10:26,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551436667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:26,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:26,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:26,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227537798] [2022-11-26 00:10:26,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:26,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:26,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:26,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:26,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:26,400 INFO L87 Difference]: Start difference. First operand 408 states and 989 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:26,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:26,715 INFO L93 Difference]: Finished difference Result 622 states and 1460 transitions. [2022-11-26 00:10:26,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:10:26,716 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:26,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:26,718 INFO L225 Difference]: With dead ends: 622 [2022-11-26 00:10:26,718 INFO L226 Difference]: Without dead ends: 614 [2022-11-26 00:10:26,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:10:26,719 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:26,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:10:26,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-11-26 00:10:26,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 410. [2022-11-26 00:10:26,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 2.4205378973105134) internal successors, (990), 409 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:26,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 990 transitions. [2022-11-26 00:10:26,735 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 990 transitions. Word has length 26 [2022-11-26 00:10:26,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:26,735 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 990 transitions. [2022-11-26 00:10:26,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:26,736 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 990 transitions. [2022-11-26 00:10:26,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:26,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:26,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:26,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-26 00:10:26,738 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:26,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:26,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1686565539, now seen corresponding path program 28 times [2022-11-26 00:10:26,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:26,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002379120] [2022-11-26 00:10:26,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:26,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:26,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:26,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:26,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002379120] [2022-11-26 00:10:26,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002379120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:26,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:26,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:26,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868458247] [2022-11-26 00:10:26,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:26,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:26,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:26,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:26,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:26,997 INFO L87 Difference]: Start difference. First operand 410 states and 990 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:27,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:27,246 INFO L93 Difference]: Finished difference Result 424 states and 1010 transitions. [2022-11-26 00:10:27,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:10:27,247 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:27,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:27,248 INFO L225 Difference]: With dead ends: 424 [2022-11-26 00:10:27,248 INFO L226 Difference]: Without dead ends: 406 [2022-11-26 00:10:27,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:10:27,249 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:27,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:27,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-11-26 00:10:27,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 400. [2022-11-26 00:10:27,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 2.4335839598997495) internal successors, (971), 399 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:27,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 971 transitions. [2022-11-26 00:10:27,261 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 971 transitions. Word has length 26 [2022-11-26 00:10:27,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:27,262 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 971 transitions. [2022-11-26 00:10:27,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:27,262 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 971 transitions. [2022-11-26 00:10:27,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:27,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:27,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:27,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-26 00:10:27,264 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:27,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:27,264 INFO L85 PathProgramCache]: Analyzing trace with hash 433627313, now seen corresponding path program 29 times [2022-11-26 00:10:27,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:27,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629178673] [2022-11-26 00:10:27,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:27,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:27,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:27,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:27,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629178673] [2022-11-26 00:10:27,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629178673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:27,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:27,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:10:27,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566421336] [2022-11-26 00:10:27,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:27,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:10:27,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:27,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:10:27,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:10:27,541 INFO L87 Difference]: Start difference. First operand 400 states and 971 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:27,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:27,795 INFO L93 Difference]: Finished difference Result 606 states and 1389 transitions. [2022-11-26 00:10:27,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:10:27,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:27,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:27,798 INFO L225 Difference]: With dead ends: 606 [2022-11-26 00:10:27,798 INFO L226 Difference]: Without dead ends: 566 [2022-11-26 00:10:27,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:27,799 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:27,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:27,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-11-26 00:10:27,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 418. [2022-11-26 00:10:27,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 2.3956834532374103) internal successors, (999), 417 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:27,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 999 transitions. [2022-11-26 00:10:27,817 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 999 transitions. Word has length 26 [2022-11-26 00:10:27,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:27,817 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 999 transitions. [2022-11-26 00:10:27,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:27,817 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 999 transitions. [2022-11-26 00:10:27,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:27,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:27,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:27,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-26 00:10:27,820 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:27,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:27,820 INFO L85 PathProgramCache]: Analyzing trace with hash 28019895, now seen corresponding path program 30 times [2022-11-26 00:10:27,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:27,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559913755] [2022-11-26 00:10:27,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:27,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:28,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:28,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:28,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559913755] [2022-11-26 00:10:28,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559913755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:28,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:28,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:10:28,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329368818] [2022-11-26 00:10:28,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:28,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:10:28,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:28,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:10:28,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:10:28,123 INFO L87 Difference]: Start difference. First operand 418 states and 999 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:28,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:28,490 INFO L93 Difference]: Finished difference Result 616 states and 1377 transitions. [2022-11-26 00:10:28,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:10:28,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:28,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:28,493 INFO L225 Difference]: With dead ends: 616 [2022-11-26 00:10:28,493 INFO L226 Difference]: Without dead ends: 608 [2022-11-26 00:10:28,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:10:28,494 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:28,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:10:28,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-11-26 00:10:28,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 418. [2022-11-26 00:10:28,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 2.3764988009592325) internal successors, (991), 417 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:28,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 991 transitions. [2022-11-26 00:10:28,511 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 991 transitions. Word has length 26 [2022-11-26 00:10:28,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:28,511 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 991 transitions. [2022-11-26 00:10:28,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:28,512 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 991 transitions. [2022-11-26 00:10:28,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:28,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:28,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:28,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-26 00:10:28,514 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:28,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:28,515 INFO L85 PathProgramCache]: Analyzing trace with hash 902403433, now seen corresponding path program 31 times [2022-11-26 00:10:28,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:28,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304407179] [2022-11-26 00:10:28,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:28,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:28,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:28,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:28,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304407179] [2022-11-26 00:10:28,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304407179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:28,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:28,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:28,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987880592] [2022-11-26 00:10:28,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:28,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:28,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:28,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:28,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:28,791 INFO L87 Difference]: Start difference. First operand 418 states and 991 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:29,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:29,214 INFO L93 Difference]: Finished difference Result 616 states and 1365 transitions. [2022-11-26 00:10:29,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:10:29,214 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:29,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:29,216 INFO L225 Difference]: With dead ends: 616 [2022-11-26 00:10:29,216 INFO L226 Difference]: Without dead ends: 604 [2022-11-26 00:10:29,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:10:29,217 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 62 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:29,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 0 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:10:29,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-11-26 00:10:29,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 406. [2022-11-26 00:10:29,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 2.3679012345679014) internal successors, (959), 405 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:29,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 959 transitions. [2022-11-26 00:10:29,230 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 959 transitions. Word has length 26 [2022-11-26 00:10:29,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:29,231 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 959 transitions. [2022-11-26 00:10:29,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:29,231 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 959 transitions. [2022-11-26 00:10:29,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:29,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:29,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:29,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-26 00:10:29,233 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:29,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:29,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1643463983, now seen corresponding path program 32 times [2022-11-26 00:10:29,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:29,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121901665] [2022-11-26 00:10:29,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:29,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:29,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:29,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121901665] [2022-11-26 00:10:29,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121901665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:29,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:29,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:10:29,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826564341] [2022-11-26 00:10:29,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:29,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:10:29,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:29,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:10:29,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:10:29,435 INFO L87 Difference]: Start difference. First operand 406 states and 959 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:29,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:29,736 INFO L93 Difference]: Finished difference Result 594 states and 1318 transitions. [2022-11-26 00:10:29,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:10:29,737 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:29,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:29,738 INFO L225 Difference]: With dead ends: 594 [2022-11-26 00:10:29,738 INFO L226 Difference]: Without dead ends: 576 [2022-11-26 00:10:29,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:10:29,739 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:29,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:10:29,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-11-26 00:10:29,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 398. [2022-11-26 00:10:29,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 2.3400503778337534) internal successors, (929), 397 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:29,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 929 transitions. [2022-11-26 00:10:29,752 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 929 transitions. Word has length 26 [2022-11-26 00:10:29,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:29,753 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 929 transitions. [2022-11-26 00:10:29,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:29,753 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 929 transitions. [2022-11-26 00:10:29,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:29,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:29,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:29,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-26 00:10:29,755 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:29,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:29,755 INFO L85 PathProgramCache]: Analyzing trace with hash -582685893, now seen corresponding path program 33 times [2022-11-26 00:10:29,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:29,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885250668] [2022-11-26 00:10:29,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:29,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:29,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:29,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:29,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885250668] [2022-11-26 00:10:29,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885250668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:29,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:29,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:29,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700872902] [2022-11-26 00:10:29,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:29,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:29,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:29,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:29,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:29,996 INFO L87 Difference]: Start difference. First operand 398 states and 929 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:30,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:30,352 INFO L93 Difference]: Finished difference Result 576 states and 1259 transitions. [2022-11-26 00:10:30,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:10:30,353 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:30,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:30,354 INFO L225 Difference]: With dead ends: 576 [2022-11-26 00:10:30,354 INFO L226 Difference]: Without dead ends: 542 [2022-11-26 00:10:30,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:10:30,355 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 73 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:30,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 0 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:10:30,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-11-26 00:10:30,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 378. [2022-11-26 00:10:30,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 2.3421750663129974) internal successors, (883), 377 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:30,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 883 transitions. [2022-11-26 00:10:30,365 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 883 transitions. Word has length 26 [2022-11-26 00:10:30,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:30,366 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 883 transitions. [2022-11-26 00:10:30,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:30,366 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 883 transitions. [2022-11-26 00:10:30,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:30,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:30,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:30,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-26 00:10:30,368 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:30,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:30,368 INFO L85 PathProgramCache]: Analyzing trace with hash -273222935, now seen corresponding path program 34 times [2022-11-26 00:10:30,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:30,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805667019] [2022-11-26 00:10:30,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:30,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:30,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:30,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:30,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805667019] [2022-11-26 00:10:30,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805667019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:30,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:30,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:30,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626220704] [2022-11-26 00:10:30,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:30,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:30,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:30,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:30,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:30,609 INFO L87 Difference]: Start difference. First operand 378 states and 883 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:31,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:31,002 INFO L93 Difference]: Finished difference Result 526 states and 1132 transitions. [2022-11-26 00:10:31,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:10:31,003 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:31,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:31,004 INFO L225 Difference]: With dead ends: 526 [2022-11-26 00:10:31,005 INFO L226 Difference]: Without dead ends: 474 [2022-11-26 00:10:31,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:10:31,005 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:31,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:10:31,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-11-26 00:10:31,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 328. [2022-11-26 00:10:31,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 2.27217125382263) internal successors, (743), 327 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:31,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 743 transitions. [2022-11-26 00:10:31,016 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 743 transitions. Word has length 26 [2022-11-26 00:10:31,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:31,018 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 743 transitions. [2022-11-26 00:10:31,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:31,019 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 743 transitions. [2022-11-26 00:10:31,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:31,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:31,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:31,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-26 00:10:31,020 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:31,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:31,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1471123203, now seen corresponding path program 35 times [2022-11-26 00:10:31,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:31,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442357178] [2022-11-26 00:10:31,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:31,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:31,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:31,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:31,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442357178] [2022-11-26 00:10:31,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442357178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:31,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:31,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:31,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008790004] [2022-11-26 00:10:31,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:31,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:31,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:31,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:31,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:31,309 INFO L87 Difference]: Start difference. First operand 328 states and 743 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:31,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:31,527 INFO L93 Difference]: Finished difference Result 334 states and 750 transitions. [2022-11-26 00:10:31,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:10:31,528 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:31,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:31,529 INFO L225 Difference]: With dead ends: 334 [2022-11-26 00:10:31,529 INFO L226 Difference]: Without dead ends: 326 [2022-11-26 00:10:31,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:10:31,530 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:31,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:31,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-11-26 00:10:31,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2022-11-26 00:10:31,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 2.270769230769231) internal successors, (738), 325 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:31,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 738 transitions. [2022-11-26 00:10:31,539 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 738 transitions. Word has length 26 [2022-11-26 00:10:31,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:31,540 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 738 transitions. [2022-11-26 00:10:31,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:31,540 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 738 transitions. [2022-11-26 00:10:31,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:31,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:31,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:31,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-26 00:10:31,541 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:31,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:31,542 INFO L85 PathProgramCache]: Analyzing trace with hash -763614597, now seen corresponding path program 36 times [2022-11-26 00:10:31,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:31,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299548375] [2022-11-26 00:10:31,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:31,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:31,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:31,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:31,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299548375] [2022-11-26 00:10:31,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299548375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:31,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:31,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:31,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099519944] [2022-11-26 00:10:31,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:31,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:31,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:31,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:31,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:31,814 INFO L87 Difference]: Start difference. First operand 326 states and 738 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:31,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:31,968 INFO L93 Difference]: Finished difference Result 336 states and 754 transitions. [2022-11-26 00:10:31,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:10:31,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:31,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:31,970 INFO L225 Difference]: With dead ends: 336 [2022-11-26 00:10:31,970 INFO L226 Difference]: Without dead ends: 330 [2022-11-26 00:10:31,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:10:31,971 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:31,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:10:31,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-26 00:10:31,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2022-11-26 00:10:31,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 2.264437689969605) internal successors, (745), 329 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:31,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 745 transitions. [2022-11-26 00:10:31,981 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 745 transitions. Word has length 26 [2022-11-26 00:10:31,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:31,982 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 745 transitions. [2022-11-26 00:10:31,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:31,982 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 745 transitions. [2022-11-26 00:10:31,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:31,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:31,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:31,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-26 00:10:31,984 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:31,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:31,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1977978847, now seen corresponding path program 37 times [2022-11-26 00:10:31,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:31,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641214979] [2022-11-26 00:10:31,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:31,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:32,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:32,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:32,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641214979] [2022-11-26 00:10:32,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641214979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:32,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:32,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:32,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304315589] [2022-11-26 00:10:32,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:32,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:32,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:32,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:32,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:32,253 INFO L87 Difference]: Start difference. First operand 330 states and 745 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:32,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:32,638 INFO L93 Difference]: Finished difference Result 478 states and 1034 transitions. [2022-11-26 00:10:32,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:10:32,639 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:32,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:32,641 INFO L225 Difference]: With dead ends: 478 [2022-11-26 00:10:32,641 INFO L226 Difference]: Without dead ends: 450 [2022-11-26 00:10:32,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:10:32,642 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:32,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:10:32,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-26 00:10:32,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 302. [2022-11-26 00:10:32,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 2.2392026578073088) internal successors, (674), 301 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:32,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 674 transitions. [2022-11-26 00:10:32,657 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 674 transitions. Word has length 26 [2022-11-26 00:10:32,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:32,657 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 674 transitions. [2022-11-26 00:10:32,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:32,658 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 674 transitions. [2022-11-26 00:10:32,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:32,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:32,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:32,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-26 00:10:32,660 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:32,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:32,661 INFO L85 PathProgramCache]: Analyzing trace with hash -130511893, now seen corresponding path program 38 times [2022-11-26 00:10:32,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:32,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184178869] [2022-11-26 00:10:32,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:32,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:32,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:32,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:32,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184178869] [2022-11-26 00:10:32,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184178869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:32,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:32,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:10:32,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934236221] [2022-11-26 00:10:32,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:32,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:10:32,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:32,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:10:32,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:10:32,875 INFO L87 Difference]: Start difference. First operand 302 states and 674 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:33,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:33,133 INFO L93 Difference]: Finished difference Result 398 states and 806 transitions. [2022-11-26 00:10:33,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:10:33,134 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:33,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:33,135 INFO L225 Difference]: With dead ends: 398 [2022-11-26 00:10:33,135 INFO L226 Difference]: Without dead ends: 336 [2022-11-26 00:10:33,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:33,136 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:33,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:33,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-26 00:10:33,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 272. [2022-11-26 00:10:33,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 2.066420664206642) internal successors, (560), 271 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:33,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 560 transitions. [2022-11-26 00:10:33,147 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 560 transitions. Word has length 26 [2022-11-26 00:10:33,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:33,147 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 560 transitions. [2022-11-26 00:10:33,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:33,148 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 560 transitions. [2022-11-26 00:10:33,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:33,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:33,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:33,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-26 00:10:33,149 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:33,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:33,150 INFO L85 PathProgramCache]: Analyzing trace with hash -238963991, now seen corresponding path program 39 times [2022-11-26 00:10:33,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:33,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205665381] [2022-11-26 00:10:33,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:33,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:33,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:33,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:33,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205665381] [2022-11-26 00:10:33,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205665381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:33,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:33,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:33,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877764720] [2022-11-26 00:10:33,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:33,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:33,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:33,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:33,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:33,441 INFO L87 Difference]: Start difference. First operand 272 states and 560 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:33,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:33,785 INFO L93 Difference]: Finished difference Result 272 states and 502 transitions. [2022-11-26 00:10:33,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:10:33,785 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:33,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:33,786 INFO L225 Difference]: With dead ends: 272 [2022-11-26 00:10:33,786 INFO L226 Difference]: Without dead ends: 140 [2022-11-26 00:10:33,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:10:33,787 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:33,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:33,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-26 00:10:33,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 118. [2022-11-26 00:10:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.8632478632478633) internal successors, (218), 117 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:33,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 218 transitions. [2022-11-26 00:10:33,791 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 218 transitions. Word has length 26 [2022-11-26 00:10:33,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:33,791 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 218 transitions. [2022-11-26 00:10:33,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:33,791 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 218 transitions. [2022-11-26 00:10:33,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:33,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:33,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:33,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-26 00:10:33,792 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:33,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:33,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1460060939, now seen corresponding path program 40 times [2022-11-26 00:10:33,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:33,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327697041] [2022-11-26 00:10:33,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:33,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:34,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:34,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327697041] [2022-11-26 00:10:34,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327697041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:34,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:34,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:34,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085057235] [2022-11-26 00:10:34,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:34,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:34,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:34,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:34,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:34,069 INFO L87 Difference]: Start difference. First operand 118 states and 218 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:34,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:34,304 INFO L93 Difference]: Finished difference Result 150 states and 266 transitions. [2022-11-26 00:10:34,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:10:34,304 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:34,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:34,305 INFO L225 Difference]: With dead ends: 150 [2022-11-26 00:10:34,305 INFO L226 Difference]: Without dead ends: 140 [2022-11-26 00:10:34,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:10:34,305 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:34,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:34,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-26 00:10:34,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 112. [2022-11-26 00:10:34,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.8468468468468469) internal successors, (205), 111 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:34,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 205 transitions. [2022-11-26 00:10:34,309 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 205 transitions. Word has length 26 [2022-11-26 00:10:34,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:34,309 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 205 transitions. [2022-11-26 00:10:34,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:34,309 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 205 transitions. [2022-11-26 00:10:34,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:34,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:34,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:34,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-26 00:10:34,310 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:34,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:34,310 INFO L85 PathProgramCache]: Analyzing trace with hash -941359913, now seen corresponding path program 41 times [2022-11-26 00:10:34,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:34,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107105099] [2022-11-26 00:10:34,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:34,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:34,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:34,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:34,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107105099] [2022-11-26 00:10:34,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107105099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:34,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:34,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:34,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581506539] [2022-11-26 00:10:34,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:34,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:34,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:34,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:34,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:34,590 INFO L87 Difference]: Start difference. First operand 112 states and 205 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:34,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:34,803 INFO L93 Difference]: Finished difference Result 120 states and 215 transitions. [2022-11-26 00:10:34,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:10:34,804 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:34,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:34,804 INFO L225 Difference]: With dead ends: 120 [2022-11-26 00:10:34,804 INFO L226 Difference]: Without dead ends: 110 [2022-11-26 00:10:34,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:10:34,805 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:34,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:34,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-26 00:10:34,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-11-26 00:10:34,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.834862385321101) internal successors, (200), 109 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:34,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 200 transitions. [2022-11-26 00:10:34,808 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 200 transitions. Word has length 26 [2022-11-26 00:10:34,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:34,809 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 200 transitions. [2022-11-26 00:10:34,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:34,809 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 200 transitions. [2022-11-26 00:10:34,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:34,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:34,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:34,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-26 00:10:34,810 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:34,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:34,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1741128815, now seen corresponding path program 42 times [2022-11-26 00:10:34,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:34,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727799066] [2022-11-26 00:10:34,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:34,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:35,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:35,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:35,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727799066] [2022-11-26 00:10:35,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727799066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:35,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:35,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:35,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160796659] [2022-11-26 00:10:35,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:35,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:35,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:35,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:35,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:35,060 INFO L87 Difference]: Start difference. First operand 110 states and 200 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:35,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:35,299 INFO L93 Difference]: Finished difference Result 118 states and 208 transitions. [2022-11-26 00:10:35,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:10:35,300 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:35,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:35,301 INFO L225 Difference]: With dead ends: 118 [2022-11-26 00:10:35,301 INFO L226 Difference]: Without dead ends: 110 [2022-11-26 00:10:35,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:10:35,301 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:35,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:35,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-26 00:10:35,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-11-26 00:10:35,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.798165137614679) internal successors, (196), 109 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:35,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 196 transitions. [2022-11-26 00:10:35,305 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 196 transitions. Word has length 26 [2022-11-26 00:10:35,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:35,305 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 196 transitions. [2022-11-26 00:10:35,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:35,305 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 196 transitions. [2022-11-26 00:10:35,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:35,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:35,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:35,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-26 00:10:35,306 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:35,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:35,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1924673667, now seen corresponding path program 43 times [2022-11-26 00:10:35,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:35,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33789922] [2022-11-26 00:10:35,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:35,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:35,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:35,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:35,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33789922] [2022-11-26 00:10:35,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33789922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:35,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:35,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:35,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574519288] [2022-11-26 00:10:35,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:35,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:35,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:35,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:35,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:35,579 INFO L87 Difference]: Start difference. First operand 110 states and 196 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:35,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:35,802 INFO L93 Difference]: Finished difference Result 142 states and 242 transitions. [2022-11-26 00:10:35,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:10:35,803 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:35,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:35,804 INFO L225 Difference]: With dead ends: 142 [2022-11-26 00:10:35,804 INFO L226 Difference]: Without dead ends: 130 [2022-11-26 00:10:35,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:10:35,804 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:35,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:35,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-26 00:10:35,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2022-11-26 00:10:35,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.7766990291262137) internal successors, (183), 103 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:35,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 183 transitions. [2022-11-26 00:10:35,808 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 183 transitions. Word has length 26 [2022-11-26 00:10:35,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:35,808 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 183 transitions. [2022-11-26 00:10:35,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:35,808 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 183 transitions. [2022-11-26 00:10:35,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:35,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:35,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:35,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-26 00:10:35,810 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:35,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:35,810 INFO L85 PathProgramCache]: Analyzing trace with hash 265511237, now seen corresponding path program 44 times [2022-11-26 00:10:35,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:35,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845846185] [2022-11-26 00:10:35,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:35,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:36,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:36,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:36,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845846185] [2022-11-26 00:10:36,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845846185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:36,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:36,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:36,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046054437] [2022-11-26 00:10:36,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:36,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:36,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:36,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:36,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:36,054 INFO L87 Difference]: Start difference. First operand 104 states and 183 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:36,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:36,261 INFO L93 Difference]: Finished difference Result 108 states and 185 transitions. [2022-11-26 00:10:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:10:36,262 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:36,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:36,262 INFO L225 Difference]: With dead ends: 108 [2022-11-26 00:10:36,262 INFO L226 Difference]: Without dead ends: 90 [2022-11-26 00:10:36,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:10:36,263 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:36,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:36,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-26 00:10:36,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-11-26 00:10:36,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.7752808988764044) internal successors, (158), 89 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:36,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 158 transitions. [2022-11-26 00:10:36,266 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 158 transitions. Word has length 26 [2022-11-26 00:10:36,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:36,266 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 158 transitions. [2022-11-26 00:10:36,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:36,267 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 158 transitions. [2022-11-26 00:10:36,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:36,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:36,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:36,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-26 00:10:36,268 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:36,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:36,269 INFO L85 PathProgramCache]: Analyzing trace with hash -709453445, now seen corresponding path program 45 times [2022-11-26 00:10:36,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:36,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943793717] [2022-11-26 00:10:36,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:36,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:36,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:36,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943793717] [2022-11-26 00:10:36,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943793717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:36,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:36,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:36,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413499293] [2022-11-26 00:10:36,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:36,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:36,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:36,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:36,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:36,493 INFO L87 Difference]: Start difference. First operand 90 states and 158 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:36,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:36,663 INFO L93 Difference]: Finished difference Result 96 states and 165 transitions. [2022-11-26 00:10:36,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:10:36,664 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:36,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:36,665 INFO L225 Difference]: With dead ends: 96 [2022-11-26 00:10:36,665 INFO L226 Difference]: Without dead ends: 90 [2022-11-26 00:10:36,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:10:36,665 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:36,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:10:36,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-26 00:10:36,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-11-26 00:10:36,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.752808988764045) internal successors, (156), 89 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:36,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 156 transitions. [2022-11-26 00:10:36,668 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 156 transitions. Word has length 26 [2022-11-26 00:10:36,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:36,668 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 156 transitions. [2022-11-26 00:10:36,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:36,669 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 156 transitions. [2022-11-26 00:10:36,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:36,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:36,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:36,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-26 00:10:36,670 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:36,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:36,670 INFO L85 PathProgramCache]: Analyzing trace with hash -502774357, now seen corresponding path program 46 times [2022-11-26 00:10:36,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:36,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667883692] [2022-11-26 00:10:36,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:36,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:36,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:36,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:36,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667883692] [2022-11-26 00:10:36,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667883692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:36,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:36,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:36,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073375363] [2022-11-26 00:10:36,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:36,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:36,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:36,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:36,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:36,928 INFO L87 Difference]: Start difference. First operand 90 states and 156 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:37,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:37,117 INFO L93 Difference]: Finished difference Result 112 states and 189 transitions. [2022-11-26 00:10:37,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:10:37,118 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:37,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:37,118 INFO L225 Difference]: With dead ends: 112 [2022-11-26 00:10:37,118 INFO L226 Difference]: Without dead ends: 102 [2022-11-26 00:10:37,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:10:37,119 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:37,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:37,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-26 00:10:37,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 88. [2022-11-26 00:10:37,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.735632183908046) internal successors, (151), 87 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:37,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 151 transitions. [2022-11-26 00:10:37,122 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 151 transitions. Word has length 26 [2022-11-26 00:10:37,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:37,123 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 151 transitions. [2022-11-26 00:10:37,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:37,123 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 151 transitions. [2022-11-26 00:10:37,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:37,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:37,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:37,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-26 00:10:37,127 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:37,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:37,127 INFO L85 PathProgramCache]: Analyzing trace with hash -648126761, now seen corresponding path program 47 times [2022-11-26 00:10:37,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:37,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17408360] [2022-11-26 00:10:37,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:37,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:37,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:37,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:37,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17408360] [2022-11-26 00:10:37,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17408360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:37,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:37,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:37,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675983205] [2022-11-26 00:10:37,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:37,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:37,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:37,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:37,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:37,391 INFO L87 Difference]: Start difference. First operand 88 states and 151 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:37,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:37,555 INFO L93 Difference]: Finished difference Result 92 states and 155 transitions. [2022-11-26 00:10:37,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:10:37,555 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:37,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:37,556 INFO L225 Difference]: With dead ends: 92 [2022-11-26 00:10:37,556 INFO L226 Difference]: Without dead ends: 78 [2022-11-26 00:10:37,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:10:37,557 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:37,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:10:37,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-26 00:10:37,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-11-26 00:10:37,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.7402597402597402) internal successors, (134), 77 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:37,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 134 transitions. [2022-11-26 00:10:37,559 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 134 transitions. Word has length 26 [2022-11-26 00:10:37,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:37,560 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 134 transitions. [2022-11-26 00:10:37,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:37,560 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 134 transitions. [2022-11-26 00:10:37,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:37,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:37,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:37,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-26 00:10:37,561 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:37,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:37,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1553128979, now seen corresponding path program 48 times [2022-11-26 00:10:37,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:37,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083199642] [2022-11-26 00:10:37,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:37,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:37,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:37,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083199642] [2022-11-26 00:10:37,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083199642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:37,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:37,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:37,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188219894] [2022-11-26 00:10:37,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:37,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:37,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:37,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:37,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:37,819 INFO L87 Difference]: Start difference. First operand 78 states and 134 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:38,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:38,104 INFO L93 Difference]: Finished difference Result 88 states and 147 transitions. [2022-11-26 00:10:38,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:10:38,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:38,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:38,105 INFO L225 Difference]: With dead ends: 88 [2022-11-26 00:10:38,105 INFO L226 Difference]: Without dead ends: 80 [2022-11-26 00:10:38,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:10:38,106 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:38,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:38,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-26 00:10:38,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2022-11-26 00:10:38,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.7142857142857142) internal successors, (132), 77 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:38,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 132 transitions. [2022-11-26 00:10:38,108 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 132 transitions. Word has length 26 [2022-11-26 00:10:38,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:38,109 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 132 transitions. [2022-11-26 00:10:38,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:38,109 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 132 transitions. [2022-11-26 00:10:38,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:38,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:38,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:38,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-26 00:10:38,110 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:38,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:38,110 INFO L85 PathProgramCache]: Analyzing trace with hash 643179823, now seen corresponding path program 49 times [2022-11-26 00:10:38,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:38,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41424988] [2022-11-26 00:10:38,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:38,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:38,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:38,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:38,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41424988] [2022-11-26 00:10:38,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41424988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:38,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:38,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:38,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691975260] [2022-11-26 00:10:38,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:38,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:38,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:38,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:38,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:38,432 INFO L87 Difference]: Start difference. First operand 78 states and 132 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:38,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:38,658 INFO L93 Difference]: Finished difference Result 84 states and 139 transitions. [2022-11-26 00:10:38,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:10:38,658 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:38,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:38,659 INFO L225 Difference]: With dead ends: 84 [2022-11-26 00:10:38,659 INFO L226 Difference]: Without dead ends: 70 [2022-11-26 00:10:38,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:10:38,660 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:38,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:38,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-26 00:10:38,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-11-26 00:10:38,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.681159420289855) internal successors, (116), 69 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:38,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 116 transitions. [2022-11-26 00:10:38,662 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 116 transitions. Word has length 26 [2022-11-26 00:10:38,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:38,663 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 116 transitions. [2022-11-26 00:10:38,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:38,663 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 116 transitions. [2022-11-26 00:10:38,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:38,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:38,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:38,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-26 00:10:38,664 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:38,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:38,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1147521561, now seen corresponding path program 50 times [2022-11-26 00:10:38,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:38,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798732235] [2022-11-26 00:10:38,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:38,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:38,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:38,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:38,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798732235] [2022-11-26 00:10:38,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798732235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:38,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:38,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:38,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883240985] [2022-11-26 00:10:38,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:38,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:38,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:38,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:38,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:38,902 INFO L87 Difference]: Start difference. First operand 70 states and 116 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:39,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:39,103 INFO L93 Difference]: Finished difference Result 82 states and 130 transitions. [2022-11-26 00:10:39,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:10:39,103 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:39,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:39,104 INFO L225 Difference]: With dead ends: 82 [2022-11-26 00:10:39,104 INFO L226 Difference]: Without dead ends: 70 [2022-11-26 00:10:39,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:10:39,104 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:39,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:39,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-26 00:10:39,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2022-11-26 00:10:39,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.626865671641791) internal successors, (109), 67 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:39,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 109 transitions. [2022-11-26 00:10:39,107 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 109 transitions. Word has length 26 [2022-11-26 00:10:39,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:39,107 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 109 transitions. [2022-11-26 00:10:39,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:39,107 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 109 transitions. [2022-11-26 00:10:39,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:39,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:39,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:39,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-26 00:10:39,108 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:39,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:39,108 INFO L85 PathProgramCache]: Analyzing trace with hash 501582959, now seen corresponding path program 51 times [2022-11-26 00:10:39,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:39,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098588147] [2022-11-26 00:10:39,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:39,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:39,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:39,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:39,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098588147] [2022-11-26 00:10:39,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098588147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:39,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:39,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:39,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567610284] [2022-11-26 00:10:39,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:39,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:39,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:39,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:39,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:39,331 INFO L87 Difference]: Start difference. First operand 68 states and 109 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:39,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:39,540 INFO L93 Difference]: Finished difference Result 74 states and 114 transitions. [2022-11-26 00:10:39,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:10:39,541 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:39,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:39,541 INFO L225 Difference]: With dead ends: 74 [2022-11-26 00:10:39,541 INFO L226 Difference]: Without dead ends: 66 [2022-11-26 00:10:39,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:10:39,542 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:39,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:39,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-26 00:10:39,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-11-26 00:10:39,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 65 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:39,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 102 transitions. [2022-11-26 00:10:39,544 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 102 transitions. Word has length 26 [2022-11-26 00:10:39,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:39,544 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 102 transitions. [2022-11-26 00:10:39,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:39,544 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 102 transitions. [2022-11-26 00:10:39,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:39,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:39,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:39,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-26 00:10:39,545 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:39,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:39,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1130747773, now seen corresponding path program 52 times [2022-11-26 00:10:39,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:39,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047016340] [2022-11-26 00:10:39,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:39,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:39,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:39,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047016340] [2022-11-26 00:10:39,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047016340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:39,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:39,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:39,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906289570] [2022-11-26 00:10:39,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:39,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:39,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:39,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:39,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:39,804 INFO L87 Difference]: Start difference. First operand 66 states and 102 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:40,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:40,009 INFO L93 Difference]: Finished difference Result 72 states and 107 transitions. [2022-11-26 00:10:40,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:10:40,010 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:40,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:40,011 INFO L225 Difference]: With dead ends: 72 [2022-11-26 00:10:40,011 INFO L226 Difference]: Without dead ends: 52 [2022-11-26 00:10:40,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:10:40,012 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:40,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:40,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-26 00:10:40,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2022-11-26 00:10:40,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.488888888888889) internal successors, (67), 45 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:40,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 67 transitions. [2022-11-26 00:10:40,014 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 67 transitions. Word has length 26 [2022-11-26 00:10:40,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:40,014 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 67 transitions. [2022-11-26 00:10:40,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:40,014 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 67 transitions. [2022-11-26 00:10:40,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:40,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:40,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:40,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-26 00:10:40,017 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:40,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:40,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1469306733, now seen corresponding path program 53 times [2022-11-26 00:10:40,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:40,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373941725] [2022-11-26 00:10:40,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:40,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:40,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:40,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:40,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373941725] [2022-11-26 00:10:40,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373941725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:40,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:40,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:40,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502020376] [2022-11-26 00:10:40,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:40,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:40,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:40,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:40,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:40,299 INFO L87 Difference]: Start difference. First operand 46 states and 67 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:40,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:40,479 INFO L93 Difference]: Finished difference Result 52 states and 74 transitions. [2022-11-26 00:10:40,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:10:40,480 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:40,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:40,480 INFO L225 Difference]: With dead ends: 52 [2022-11-26 00:10:40,480 INFO L226 Difference]: Without dead ends: 44 [2022-11-26 00:10:40,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:10:40,481 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:40,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:10:40,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-26 00:10:40,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-26 00:10:40,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:40,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 62 transitions. [2022-11-26 00:10:40,484 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 62 transitions. Word has length 26 [2022-11-26 00:10:40,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:40,484 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 62 transitions. [2022-11-26 00:10:40,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:40,485 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 62 transitions. [2022-11-26 00:10:40,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:40,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:40,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:40,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-11-26 00:10:40,486 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:40,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:40,486 INFO L85 PathProgramCache]: Analyzing trace with hash 779346751, now seen corresponding path program 54 times [2022-11-26 00:10:40,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:40,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018191427] [2022-11-26 00:10:40,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:40,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:40,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:40,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:40,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018191427] [2022-11-26 00:10:40,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018191427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:40,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:40,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:40,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746307965] [2022-11-26 00:10:40,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:40,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:40,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:40,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:40,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:40,771 INFO L87 Difference]: Start difference. First operand 44 states and 62 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:40,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:40,926 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2022-11-26 00:10:40,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:10:40,927 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:40,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:40,927 INFO L225 Difference]: With dead ends: 48 [2022-11-26 00:10:40,928 INFO L226 Difference]: Without dead ends: 40 [2022-11-26 00:10:40,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:10:40,928 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:40,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:10:40,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-26 00:10:40,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-26 00:10:40,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:40,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2022-11-26 00:10:40,930 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 26 [2022-11-26 00:10:40,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:40,930 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2022-11-26 00:10:40,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2022-11-26 00:10:40,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:10:40,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:40,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:40,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-11-26 00:10:40,931 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-26 00:10:40,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:40,933 INFO L85 PathProgramCache]: Analyzing trace with hash 642777699, now seen corresponding path program 55 times [2022-11-26 00:10:40,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:40,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784020212] [2022-11-26 00:10:40,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:40,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:41,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:41,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:41,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784020212] [2022-11-26 00:10:41,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784020212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:41,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:41,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:10:41,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808191219] [2022-11-26 00:10:41,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:41,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:10:41,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:41,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:10:41,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:10:41,210 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:41,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:10:41,327 INFO L93 Difference]: Finished difference Result 28 states and 38 transitions. [2022-11-26 00:10:41,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:10:41,328 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-26 00:10:41,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:10:41,328 INFO L225 Difference]: With dead ends: 28 [2022-11-26 00:10:41,328 INFO L226 Difference]: Without dead ends: 0 [2022-11-26 00:10:41,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:10:41,329 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:10:41,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:10:41,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-26 00:10:41,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-26 00:10:41,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:41,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-26 00:10:41,330 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2022-11-26 00:10:41,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:10:41,330 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-26 00:10:41,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:10:41,330 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-26 00:10:41,330 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-26 00:10:41,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 22 remaining) [2022-11-26 00:10:41,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 22 remaining) [2022-11-26 00:10:41,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 22 remaining) [2022-11-26 00:10:41,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 22 remaining) [2022-11-26 00:10:41,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 22 remaining) [2022-11-26 00:10:41,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 22 remaining) [2022-11-26 00:10:41,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 22 remaining) [2022-11-26 00:10:41,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 22 remaining) [2022-11-26 00:10:41,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 22 remaining) [2022-11-26 00:10:41,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 22 remaining) [2022-11-26 00:10:41,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 22 remaining) [2022-11-26 00:10:41,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 22 remaining) [2022-11-26 00:10:41,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 22 remaining) [2022-11-26 00:10:41,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 22 remaining) [2022-11-26 00:10:41,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 22 remaining) [2022-11-26 00:10:41,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 22 remaining) [2022-11-26 00:10:41,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (5 of 22 remaining) [2022-11-26 00:10:41,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK (4 of 22 remaining) [2022-11-26 00:10:41,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 22 remaining) [2022-11-26 00:10:41,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 22 remaining) [2022-11-26 00:10:41,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 22 remaining) [2022-11-26 00:10:41,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 22 remaining) [2022-11-26 00:10:41,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-11-26 00:10:41,352 INFO L445 BasicCegarLoop]: Path program histogram: [55, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:10:41,356 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-26 00:10:41,356 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:10:41,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:10:41 BasicIcfg [2022-11-26 00:10:41,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:10:41,362 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:10:41,363 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:10:41,363 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:10:41,364 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:09:57" (3/4) ... [2022-11-26 00:10:41,367 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-26 00:10:41,374 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-26 00:10:41,375 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-26 00:10:41,375 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-26 00:10:41,375 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2022-11-26 00:10:41,385 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2022-11-26 00:10:41,385 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-26 00:10:41,385 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-26 00:10:41,386 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-26 00:10:41,448 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14735309-ae7a-43af-a724-e358de8ca6c1/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-26 00:10:41,449 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:10:41,449 INFO L158 Benchmark]: Toolchain (without parser) took 44921.20ms. Allocated memory was 140.5MB in the beginning and 520.1MB in the end (delta: 379.6MB). Free memory was 108.9MB in the beginning and 233.3MB in the end (delta: -124.4MB). Peak memory consumption was 258.2MB. Max. memory is 16.1GB. [2022-11-26 00:10:41,450 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 104.9MB. Free memory is still 58.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:10:41,450 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.15ms. Allocated memory is still 140.5MB. Free memory was 108.9MB in the beginning and 94.1MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-26 00:10:41,450 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.63ms. Allocated memory is still 140.5MB. Free memory was 94.1MB in the beginning and 91.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:10:41,450 INFO L158 Benchmark]: Boogie Preprocessor took 28.86ms. Allocated memory is still 140.5MB. Free memory was 91.5MB in the beginning and 90.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:10:41,451 INFO L158 Benchmark]: RCFGBuilder took 802.43ms. Allocated memory is still 140.5MB. Free memory was 89.9MB in the beginning and 65.2MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-26 00:10:41,452 INFO L158 Benchmark]: TraceAbstraction took 43630.18ms. Allocated memory was 140.5MB in the beginning and 520.1MB in the end (delta: 379.6MB). Free memory was 64.2MB in the beginning and 236.5MB in the end (delta: -172.3MB). Peak memory consumption was 207.9MB. Max. memory is 16.1GB. [2022-11-26 00:10:41,452 INFO L158 Benchmark]: Witness Printer took 86.48ms. Allocated memory is still 520.1MB. Free memory was 236.5MB in the beginning and 233.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 00:10:41,456 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 104.9MB. Free memory is still 58.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 316.15ms. Allocated memory is still 140.5MB. Free memory was 108.9MB in the beginning and 94.1MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.63ms. Allocated memory is still 140.5MB. Free memory was 94.1MB in the beginning and 91.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.86ms. Allocated memory is still 140.5MB. Free memory was 91.5MB in the beginning and 90.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 802.43ms. Allocated memory is still 140.5MB. Free memory was 89.9MB in the beginning and 65.2MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 43630.18ms. Allocated memory was 140.5MB in the beginning and 520.1MB in the end (delta: 379.6MB). Free memory was 64.2MB in the beginning and 236.5MB in the end (delta: -172.3MB). Peak memory consumption was 207.9MB. Max. memory is 16.1GB. * Witness Printer took 86.48ms. Allocated memory is still 520.1MB. Free memory was 236.5MB in the beginning and 233.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.2s, 173 PlacesBefore, 61 PlacesAfterwards, 162 TransitionsBefore, 48 TransitionsAfterwards, 1702 CoEnabledTransitionPairs, 7 FixpointIterations, 93 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 154 TotalNumberOfCompositions, 4405 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2764, independent: 2665, independent conditional: 0, independent unconditional: 2665, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1243, independent: 1209, independent conditional: 0, independent unconditional: 1209, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1243, independent: 1175, independent conditional: 0, independent unconditional: 1175, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 68, independent: 34, independent conditional: 0, independent unconditional: 34, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 255, independent: 124, independent conditional: 0, independent unconditional: 124, dependent: 131, dependent conditional: 0, dependent unconditional: 131, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2764, independent: 1456, independent conditional: 0, independent unconditional: 1456, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 1243, unknown conditional: 0, unknown unconditional: 1243] , Statistics on independence cache: Total cache size (in pairs): 197, Positive cache size: 182, Positive conditional cache size: 0, Positive unconditional cache size: 182, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, 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: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -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: 146]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 120]: 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 9 procedures, 194 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 43.4s, OverallIterations: 64, TraceHistogramMax: 1, PathProgramHistogramMax: 55, EmptinessCheckTime: 0.1s, AutomataDifference: 14.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1802 SdHoareTripleChecker+Valid, 12.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1802 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 10.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 634 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14489 IncrementalHoareTripleChecker+Invalid, 15123 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 634 mSolverCounterUnsat, 0 mSDtfsCounter, 14489 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 556 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 493 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=803occurred in iteration=0, InterpolantAutomatonStates: 550, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 64 MinimizatonAttempts, 3408 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 14.7s InterpolantComputationTime, 1479 NumberOfCodeBlocks, 1479 NumberOfCodeBlocksAsserted, 64 NumberOfCheckSat, 1415 ConstructedInterpolants, 0 QuantifiedInterpolants, 6720 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 64 InterpolantComputations, 64 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 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-26 00:10:41,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14735309-ae7a-43af-a724-e358de8ca6c1/bin/utaipan-ByfvJB40ur/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