./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-circular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-circular-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f91abcd8d9f4c4a9bb166bca3090e9f421fd2afed3c0226bce3d2e7c0b6ce95e --- 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-dbf71c6-m [2022-10-17 17:17:57,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:17:57,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:17:57,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:17:57,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:17:57,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:17:57,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:17:57,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:17:57,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:17:57,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:17:57,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:17:57,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:17:57,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:17:57,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:17:57,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:17:57,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:17:57,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:17:57,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:17:57,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:17:57,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:17:57,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:17:57,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:17:57,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:17:57,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:17:57,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:17:57,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:17:57,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:17:57,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:17:57,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:17:57,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:17:57,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:17:57,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:17:57,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:17:57,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:17:57,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:17:57,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:17:57,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:17:57,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:17:57,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:17:57,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:17:57,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:17:57,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2022-10-17 17:17:57,658 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:17:57,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:17:57,659 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:17:57,659 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:17:57,660 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:17:57,661 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:17:57,661 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:17:57,662 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:17:57,662 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:17:57,662 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:17:57,663 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:17:57,663 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:17:57,664 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:17:57,664 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:17:57,664 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:17:57,665 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:17:57,665 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:17:57,665 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:17:57,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 17:17:57,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 17:17:57,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:17:57,667 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:17:57,667 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:17:57,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:17:57,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:17:57,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:17:57,668 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 17:17:57,668 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 17:17:57,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:17:57,669 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 17:17:57,669 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:17:57,669 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:17:57,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:17:57,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:17:57,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:17:57,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:17:57,671 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:17:57,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:17:57,671 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:17:57,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:17:57,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:17:57,672 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_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91abcd8d9f4c4a9bb166bca3090e9f421fd2afed3c0226bce3d2e7c0b6ce95e [2022-10-17 17:17:57,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:17:57,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:17:57,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:17:57,952 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:17:57,957 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:17:57,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/forester-heap/sll-circular-2.i [2022-10-17 17:17:58,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/data/15cb97619/c492f4fdf6c04c049235b1ede6ed67bd/FLAG8d91148cd [2022-10-17 17:17:58,598 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:17:58,599 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/sv-benchmarks/c/forester-heap/sll-circular-2.i [2022-10-17 17:17:58,615 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/data/15cb97619/c492f4fdf6c04c049235b1ede6ed67bd/FLAG8d91148cd [2022-10-17 17:17:58,877 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/data/15cb97619/c492f4fdf6c04c049235b1ede6ed67bd [2022-10-17 17:17:58,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:17:58,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:17:58,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:17:58,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:17:58,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:17:58,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:17:58" (1/1) ... [2022-10-17 17:17:58,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb28ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:58, skipping insertion in model container [2022-10-17 17:17:58,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:17:58" (1/1) ... [2022-10-17 17:17:58,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:17:58,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:17:59,283 WARN L230 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_3492421f-22bb-412d-89db-bcbea16193f5/sv-benchmarks/c/forester-heap/sll-circular-2.i[22324,22337] [2022-10-17 17:17:59,287 WARN L230 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_3492421f-22bb-412d-89db-bcbea16193f5/sv-benchmarks/c/forester-heap/sll-circular-2.i[22430,22443] [2022-10-17 17:17:59,289 WARN L230 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_3492421f-22bb-412d-89db-bcbea16193f5/sv-benchmarks/c/forester-heap/sll-circular-2.i[22554,22567] [2022-10-17 17:17:59,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:17:59,303 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:17:59,369 WARN L230 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_3492421f-22bb-412d-89db-bcbea16193f5/sv-benchmarks/c/forester-heap/sll-circular-2.i[22324,22337] [2022-10-17 17:17:59,377 WARN L230 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_3492421f-22bb-412d-89db-bcbea16193f5/sv-benchmarks/c/forester-heap/sll-circular-2.i[22430,22443] [2022-10-17 17:17:59,382 WARN L230 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_3492421f-22bb-412d-89db-bcbea16193f5/sv-benchmarks/c/forester-heap/sll-circular-2.i[22554,22567] [2022-10-17 17:17:59,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:17:59,423 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:17:59,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:59 WrapperNode [2022-10-17 17:17:59,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:17:59,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:17:59,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:17:59,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:17:59,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:59" (1/1) ... [2022-10-17 17:17:59,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:59" (1/1) ... [2022-10-17 17:17:59,516 INFO L138 Inliner]: procedures = 119, calls = 28, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 119 [2022-10-17 17:17:59,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:17:59,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:17:59,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:17:59,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:17:59,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:59" (1/1) ... [2022-10-17 17:17:59,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:59" (1/1) ... [2022-10-17 17:17:59,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:59" (1/1) ... [2022-10-17 17:17:59,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:59" (1/1) ... [2022-10-17 17:17:59,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:59" (1/1) ... [2022-10-17 17:17:59,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:59" (1/1) ... [2022-10-17 17:17:59,574 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:59" (1/1) ... [2022-10-17 17:17:59,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:59" (1/1) ... [2022-10-17 17:17:59,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:17:59,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:17:59,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:17:59,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:17:59,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:59" (1/1) ... [2022-10-17 17:17:59,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:17:59,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:17:59,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:17:59,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:17:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:17:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:17:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:17:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:17:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:17:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:17:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:17:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:17:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:17:59,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:17:59,841 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:17:59,843 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:18:00,331 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:18:00,410 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:18:00,411 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-10-17 17:18:00,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:18:00 BoogieIcfgContainer [2022-10-17 17:18:00,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:18:00,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:18:00,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:18:00,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:18:00,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:17:58" (1/3) ... [2022-10-17 17:18:00,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7420070a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:18:00, skipping insertion in model container [2022-10-17 17:18:00,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:59" (2/3) ... [2022-10-17 17:18:00,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7420070a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:18:00, skipping insertion in model container [2022-10-17 17:18:00,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:18:00" (3/3) ... [2022-10-17 17:18:00,426 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2022-10-17 17:18:00,447 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:18:00,447 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2022-10-17 17:18:00,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:18:00,527 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;@61b85d3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:18:00,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-10-17 17:18:00,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 43 states have (on average 2.511627906976744) internal successors, (108), 89 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:00,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-10-17 17:18:00,551 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:00,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-10-17 17:18:00,553 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:00,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:00,560 INFO L85 PathProgramCache]: Analyzing trace with hash 7320, now seen corresponding path program 1 times [2022-10-17 17:18:00,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:00,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769874030] [2022-10-17 17:18:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:00,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:00,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:00,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769874030] [2022-10-17 17:18:00,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769874030] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:00,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:00,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-17 17:18:00,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532895726] [2022-10-17 17:18:00,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:00,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:18:00,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:00,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:18:00,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:18:00,879 INFO L87 Difference]: Start difference. First operand has 90 states, 43 states have (on average 2.511627906976744) internal successors, (108), 89 states have internal predecessors, (108), 0 states have call successors, (0), 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 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:01,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:01,051 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2022-10-17 17:18:01,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:18:01,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-10-17 17:18:01,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:01,065 INFO L225 Difference]: With dead ends: 96 [2022-10-17 17:18:01,065 INFO L226 Difference]: Without dead ends: 95 [2022-10-17 17:18:01,068 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 [2022-10-17 17:18:01,073 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 77 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:01,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 61 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:18:01,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-10-17 17:18:01,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 85. [2022-10-17 17:18:01,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 43 states have (on average 2.116279069767442) internal successors, (91), 84 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:01,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2022-10-17 17:18:01,124 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 2 [2022-10-17 17:18:01,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:01,124 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2022-10-17 17:18:01,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:01,125 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2022-10-17 17:18:01,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-10-17 17:18:01,125 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:01,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-10-17 17:18:01,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:18:01,126 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:01,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:01,127 INFO L85 PathProgramCache]: Analyzing trace with hash 7321, now seen corresponding path program 1 times [2022-10-17 17:18:01,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:01,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914674177] [2022-10-17 17:18:01,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:01,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:01,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:01,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:01,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914674177] [2022-10-17 17:18:01,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914674177] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:01,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:01,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-17 17:18:01,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521899337] [2022-10-17 17:18:01,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:01,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:18:01,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:01,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:18:01,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:18:01,234 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:01,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:01,345 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2022-10-17 17:18:01,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:18:01,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-10-17 17:18:01,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:01,347 INFO L225 Difference]: With dead ends: 93 [2022-10-17 17:18:01,347 INFO L226 Difference]: Without dead ends: 93 [2022-10-17 17:18:01,348 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 [2022-10-17 17:18:01,349 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 75 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:01,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 64 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:18:01,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-10-17 17:18:01,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2022-10-17 17:18:01,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 43 states have (on average 2.0232558139534884) internal successors, (87), 80 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2022-10-17 17:18:01,359 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 2 [2022-10-17 17:18:01,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:01,359 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2022-10-17 17:18:01,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:01,360 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2022-10-17 17:18:01,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:18:01,377 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:01,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:18:01,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:18:01,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:01,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:01,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1824801511, now seen corresponding path program 1 times [2022-10-17 17:18:01,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:01,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123388477] [2022-10-17 17:18:01,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:01,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:01,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:01,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:01,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123388477] [2022-10-17 17:18:01,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123388477] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:01,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:01,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:18:01,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91943310] [2022-10-17 17:18:01,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:01,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:18:01,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:01,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:18:01,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:18:01,541 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:01,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:01,696 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2022-10-17 17:18:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:18:01,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-17 17:18:01,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:01,698 INFO L225 Difference]: With dead ends: 79 [2022-10-17 17:18:01,699 INFO L226 Difference]: Without dead ends: 79 [2022-10-17 17:18:01,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:18:01,700 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 114 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:01,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 41 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:18:01,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-10-17 17:18:01,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2022-10-17 17:18:01,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 69 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:01,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2022-10-17 17:18:01,721 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 6 [2022-10-17 17:18:01,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:01,721 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2022-10-17 17:18:01,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:01,722 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2022-10-17 17:18:01,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:18:01,722 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:01,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:18:01,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:18:01,723 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:01,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:01,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1824801510, now seen corresponding path program 1 times [2022-10-17 17:18:01,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:01,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859729330] [2022-10-17 17:18:01,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:01,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:01,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:01,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:01,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859729330] [2022-10-17 17:18:01,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859729330] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:01,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:01,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:18:01,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666521821] [2022-10-17 17:18:01,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:01,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:18:01,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:01,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:18:01,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:18:01,939 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:02,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:02,138 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2022-10-17 17:18:02,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:18:02,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-17 17:18:02,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:02,140 INFO L225 Difference]: With dead ends: 87 [2022-10-17 17:18:02,140 INFO L226 Difference]: Without dead ends: 87 [2022-10-17 17:18:02,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:18:02,142 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 71 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:02,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 80 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:18:02,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-10-17 17:18:02,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 75. [2022-10-17 17:18:02,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 74 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:02,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2022-10-17 17:18:02,151 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 6 [2022-10-17 17:18:02,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:02,152 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2022-10-17 17:18:02,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:02,152 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2022-10-17 17:18:02,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:18:02,153 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:02,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:02,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 17:18:02,153 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:02,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:02,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1287407321, now seen corresponding path program 1 times [2022-10-17 17:18:02,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:02,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234520863] [2022-10-17 17:18:02,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:02,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:02,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:02,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234520863] [2022-10-17 17:18:02,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234520863] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:02,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:02,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:18:02,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057706217] [2022-10-17 17:18:02,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:02,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:18:02,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:02,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:18:02,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:18:02,309 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:02,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:02,459 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2022-10-17 17:18:02,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:18:02,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-17 17:18:02,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:02,464 INFO L225 Difference]: With dead ends: 74 [2022-10-17 17:18:02,465 INFO L226 Difference]: Without dead ends: 74 [2022-10-17 17:18:02,465 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 [2022-10-17 17:18:02,474 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 50 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:02,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 106 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:18:02,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-10-17 17:18:02,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-10-17 17:18:02,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 48 states have (on average 1.6875) internal successors, (81), 73 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2022-10-17 17:18:02,495 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 8 [2022-10-17 17:18:02,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:02,496 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2022-10-17 17:18:02,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:02,497 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2022-10-17 17:18:02,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:18:02,497 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:02,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:02,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 17:18:02,498 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:02,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:02,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1287407320, now seen corresponding path program 1 times [2022-10-17 17:18:02,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:02,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318067559] [2022-10-17 17:18:02,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:02,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:02,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:02,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318067559] [2022-10-17 17:18:02,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318067559] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:02,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:02,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:18:02,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280266518] [2022-10-17 17:18:02,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:02,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:18:02,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:02,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:18:02,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:18:02,787 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:02,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:02,935 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2022-10-17 17:18:02,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:18:02,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-17 17:18:02,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:02,936 INFO L225 Difference]: With dead ends: 70 [2022-10-17 17:18:02,936 INFO L226 Difference]: Without dead ends: 70 [2022-10-17 17:18:02,937 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 [2022-10-17 17:18:02,938 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 15 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:02,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 151 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:18:02,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-10-17 17:18:02,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2022-10-17 17:18:02,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.627906976744186) internal successors, (70), 63 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:02,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2022-10-17 17:18:02,945 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 8 [2022-10-17 17:18:02,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:02,945 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2022-10-17 17:18:02,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:02,946 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2022-10-17 17:18:02,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 17:18:02,946 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:02,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:02,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 17:18:02,947 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:02,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:02,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1260581677, now seen corresponding path program 1 times [2022-10-17 17:18:02,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:02,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487822637] [2022-10-17 17:18:02,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:02,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:03,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:03,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:03,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487822637] [2022-10-17 17:18:03,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487822637] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:03,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:03,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 17:18:03,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550717296] [2022-10-17 17:18:03,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:03,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 17:18:03,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:03,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 17:18:03,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:18:03,165 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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) [2022-10-17 17:18:03,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:03,393 INFO L93 Difference]: Finished difference Result 144 states and 155 transitions. [2022-10-17 17:18:03,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 17:18:03,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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 [2022-10-17 17:18:03,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:03,395 INFO L225 Difference]: With dead ends: 144 [2022-10-17 17:18:03,395 INFO L226 Difference]: Without dead ends: 144 [2022-10-17 17:18:03,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-10-17 17:18:03,397 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 166 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:03,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 227 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:18:03,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-10-17 17:18:03,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 69. [2022-10-17 17:18:03,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 68 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:03,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2022-10-17 17:18:03,405 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 9 [2022-10-17 17:18:03,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:03,405 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2022-10-17 17:18:03,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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) [2022-10-17 17:18:03,406 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2022-10-17 17:18:03,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 17:18:03,406 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:03,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:03,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 17:18:03,407 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:03,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:03,408 INFO L85 PathProgramCache]: Analyzing trace with hash -423322160, now seen corresponding path program 1 times [2022-10-17 17:18:03,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:03,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506380157] [2022-10-17 17:18:03,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:03,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:03,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:03,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506380157] [2022-10-17 17:18:03,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506380157] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:03,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:03,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:18:03,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68045287] [2022-10-17 17:18:03,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:03,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 17:18:03,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:03,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 17:18:03,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:18:03,613 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:03,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:03,812 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2022-10-17 17:18:03,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 17:18:03,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-17 17:18:03,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:03,814 INFO L225 Difference]: With dead ends: 105 [2022-10-17 17:18:03,814 INFO L226 Difference]: Without dead ends: 105 [2022-10-17 17:18:03,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-10-17 17:18:03,815 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 239 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:03,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 81 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:18:03,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-10-17 17:18:03,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 84. [2022-10-17 17:18:03,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 63 states have (on average 1.6825396825396826) internal successors, (106), 83 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:03,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2022-10-17 17:18:03,826 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 10 [2022-10-17 17:18:03,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:03,827 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2022-10-17 17:18:03,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:03,827 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2022-10-17 17:18:03,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 17:18:03,827 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:03,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:03,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 17:18:03,828 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:03,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:03,829 INFO L85 PathProgramCache]: Analyzing trace with hash -423322159, now seen corresponding path program 1 times [2022-10-17 17:18:03,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:03,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583041145] [2022-10-17 17:18:03,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:03,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:04,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:04,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:04,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583041145] [2022-10-17 17:18:04,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583041145] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:04,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:04,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:18:04,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590110189] [2022-10-17 17:18:04,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:04,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 17:18:04,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:04,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 17:18:04,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:18:04,155 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:04,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:04,352 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2022-10-17 17:18:04,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:18:04,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-17 17:18:04,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:04,353 INFO L225 Difference]: With dead ends: 118 [2022-10-17 17:18:04,354 INFO L226 Difference]: Without dead ends: 118 [2022-10-17 17:18:04,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-10-17 17:18:04,356 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 229 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:04,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 103 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:18:04,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-10-17 17:18:04,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 91. [2022-10-17 17:18:04,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 90 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) [2022-10-17 17:18:04,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2022-10-17 17:18:04,375 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 109 transitions. Word has length 10 [2022-10-17 17:18:04,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:04,375 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 109 transitions. [2022-10-17 17:18:04,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:04,376 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 109 transitions. [2022-10-17 17:18:04,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 17:18:04,377 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:04,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:04,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 17:18:04,381 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:04,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:04,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1806268972, now seen corresponding path program 1 times [2022-10-17 17:18:04,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:04,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96717631] [2022-10-17 17:18:04,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:04,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:04,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:04,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96717631] [2022-10-17 17:18:04,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96717631] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:04,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:04,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:18:04,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503746772] [2022-10-17 17:18:04,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:04,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:18:04,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:04,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:18:04,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:18:04,482 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:04,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:04,577 INFO L93 Difference]: Finished difference Result 91 states and 109 transitions. [2022-10-17 17:18:04,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:18:04,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-17 17:18:04,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:04,579 INFO L225 Difference]: With dead ends: 91 [2022-10-17 17:18:04,579 INFO L226 Difference]: Without dead ends: 91 [2022-10-17 17:18:04,579 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 [2022-10-17 17:18:04,580 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 11 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:04,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 175 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:18:04,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-10-17 17:18:04,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2022-10-17 17:18:04,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 69 states have (on average 1.5507246376811594) internal successors, (107), 88 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:04,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 107 transitions. [2022-10-17 17:18:04,594 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 107 transitions. Word has length 12 [2022-10-17 17:18:04,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:04,594 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 107 transitions. [2022-10-17 17:18:04,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:04,594 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 107 transitions. [2022-10-17 17:18:04,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 17:18:04,595 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:04,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:04,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 17:18:04,596 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:04,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:04,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1166409919, now seen corresponding path program 1 times [2022-10-17 17:18:04,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:04,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227577186] [2022-10-17 17:18:04,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:04,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:04,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:04,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227577186] [2022-10-17 17:18:04,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227577186] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:04,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:04,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 17:18:04,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238291894] [2022-10-17 17:18:04,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:04,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:18:04,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:04,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:18:04,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:18:04,990 INFO L87 Difference]: Start difference. First operand 89 states and 107 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:05,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:05,259 INFO L93 Difference]: Finished difference Result 119 states and 134 transitions. [2022-10-17 17:18:05,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 17:18:05,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-17 17:18:05,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:05,264 INFO L225 Difference]: With dead ends: 119 [2022-10-17 17:18:05,265 INFO L226 Difference]: Without dead ends: 119 [2022-10-17 17:18:05,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-10-17 17:18:05,266 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 172 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:05,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 188 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:18:05,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-10-17 17:18:05,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 92. [2022-10-17 17:18:05,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 91 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:05,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 112 transitions. [2022-10-17 17:18:05,269 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 112 transitions. Word has length 13 [2022-10-17 17:18:05,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:05,270 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 112 transitions. [2022-10-17 17:18:05,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:05,270 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 112 transitions. [2022-10-17 17:18:05,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 17:18:05,271 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:05,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:05,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 17:18:05,271 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:05,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:05,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1166409918, now seen corresponding path program 1 times [2022-10-17 17:18:05,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:05,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458523125] [2022-10-17 17:18:05,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:05,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:05,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:05,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458523125] [2022-10-17 17:18:05,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458523125] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:05,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:05,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:18:05,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731600399] [2022-10-17 17:18:05,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:05,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 17:18:05,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:05,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 17:18:05,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:18:05,665 INFO L87 Difference]: Start difference. First operand 92 states and 112 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:05,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:05,943 INFO L93 Difference]: Finished difference Result 131 states and 145 transitions. [2022-10-17 17:18:05,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 17:18:05,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-17 17:18:05,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:05,944 INFO L225 Difference]: With dead ends: 131 [2022-10-17 17:18:05,944 INFO L226 Difference]: Without dead ends: 131 [2022-10-17 17:18:05,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-10-17 17:18:05,945 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 141 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:05,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 183 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:18:05,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-10-17 17:18:05,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 92. [2022-10-17 17:18:05,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 72 states have (on average 1.5416666666666667) internal successors, (111), 91 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:05,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 111 transitions. [2022-10-17 17:18:05,949 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 111 transitions. Word has length 13 [2022-10-17 17:18:05,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:05,949 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 111 transitions. [2022-10-17 17:18:05,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:05,949 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 111 transitions. [2022-10-17 17:18:05,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:18:05,950 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:05,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:05,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-17 17:18:05,951 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:05,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:05,951 INFO L85 PathProgramCache]: Analyzing trace with hash 2136007192, now seen corresponding path program 1 times [2022-10-17 17:18:05,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:05,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008109339] [2022-10-17 17:18:05,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:05,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:05,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:05,984 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:05,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008109339] [2022-10-17 17:18:05,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008109339] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:05,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:05,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:18:05,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473050252] [2022-10-17 17:18:05,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:05,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:18:05,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:05,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:18:05,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:18:05,986 INFO L87 Difference]: Start difference. First operand 92 states and 111 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:06,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:06,020 INFO L93 Difference]: Finished difference Result 150 states and 173 transitions. [2022-10-17 17:18:06,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:18:06,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-17 17:18:06,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:06,023 INFO L225 Difference]: With dead ends: 150 [2022-10-17 17:18:06,023 INFO L226 Difference]: Without dead ends: 150 [2022-10-17 17:18:06,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:18:06,024 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 55 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:06,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 105 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:18:06,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-10-17 17:18:06,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 102. [2022-10-17 17:18:06,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 82 states have (on average 1.5) internal successors, (123), 101 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:06,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 123 transitions. [2022-10-17 17:18:06,029 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 123 transitions. Word has length 15 [2022-10-17 17:18:06,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:06,029 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 123 transitions. [2022-10-17 17:18:06,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:06,030 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 123 transitions. [2022-10-17 17:18:06,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 17:18:06,030 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:06,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:06,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-17 17:18:06,031 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:06,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:06,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2084441583, now seen corresponding path program 1 times [2022-10-17 17:18:06,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:06,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35629935] [2022-10-17 17:18:06,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:06,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:06,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:06,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35629935] [2022-10-17 17:18:06,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35629935] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:06,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:06,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:18:06,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644827698] [2022-10-17 17:18:06,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:06,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 17:18:06,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:06,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 17:18:06,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:18:06,263 INFO L87 Difference]: Start difference. First operand 102 states and 123 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:06,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:06,428 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2022-10-17 17:18:06,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 17:18:06,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-10-17 17:18:06,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:06,430 INFO L225 Difference]: With dead ends: 141 [2022-10-17 17:18:06,430 INFO L226 Difference]: Without dead ends: 141 [2022-10-17 17:18:06,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-10-17 17:18:06,431 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 223 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:06,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 145 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:18:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-10-17 17:18:06,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 105. [2022-10-17 17:18:06,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 85 states have (on average 1.4941176470588236) internal successors, (127), 104 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:06,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 127 transitions. [2022-10-17 17:18:06,435 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 127 transitions. Word has length 16 [2022-10-17 17:18:06,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:06,435 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 127 transitions. [2022-10-17 17:18:06,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:06,436 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 127 transitions. [2022-10-17 17:18:06,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 17:18:06,436 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:06,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:06,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-17 17:18:06,437 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:06,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:06,437 INFO L85 PathProgramCache]: Analyzing trace with hash 2065219022, now seen corresponding path program 1 times [2022-10-17 17:18:06,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:06,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471578677] [2022-10-17 17:18:06,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:06,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:06,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:06,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:06,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471578677] [2022-10-17 17:18:06,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471578677] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:06,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:06,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 17:18:06,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217665007] [2022-10-17 17:18:06,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:06,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 17:18:06,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:06,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 17:18:06,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-10-17 17:18:06,913 INFO L87 Difference]: Start difference. First operand 105 states and 127 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:07,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:07,361 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2022-10-17 17:18:07,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 17:18:07,362 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-10-17 17:18:07,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:07,362 INFO L225 Difference]: With dead ends: 120 [2022-10-17 17:18:07,363 INFO L226 Difference]: Without dead ends: 120 [2022-10-17 17:18:07,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-10-17 17:18:07,363 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 143 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:07,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 252 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:18:07,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-10-17 17:18:07,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 105. [2022-10-17 17:18:07,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 85 states have (on average 1.4705882352941178) internal successors, (125), 104 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:07,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 125 transitions. [2022-10-17 17:18:07,367 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 125 transitions. Word has length 16 [2022-10-17 17:18:07,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:07,367 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 125 transitions. [2022-10-17 17:18:07,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:07,368 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 125 transitions. [2022-10-17 17:18:07,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 17:18:07,372 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:07,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:07,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-17 17:18:07,372 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:07,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:07,373 INFO L85 PathProgramCache]: Analyzing trace with hash 193251577, now seen corresponding path program 1 times [2022-10-17 17:18:07,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:07,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049892050] [2022-10-17 17:18:07,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:07,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:07,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:07,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:07,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049892050] [2022-10-17 17:18:07,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049892050] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:07,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:07,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 17:18:07,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037545862] [2022-10-17 17:18:07,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:07,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:18:07,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:07,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:18:07,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:18:07,586 INFO L87 Difference]: Start difference. First operand 105 states and 125 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:07,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:07,799 INFO L93 Difference]: Finished difference Result 146 states and 161 transitions. [2022-10-17 17:18:07,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 17:18:07,800 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-10-17 17:18:07,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:07,801 INFO L225 Difference]: With dead ends: 146 [2022-10-17 17:18:07,801 INFO L226 Difference]: Without dead ends: 146 [2022-10-17 17:18:07,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-10-17 17:18:07,802 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 230 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:07,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 202 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:18:07,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-10-17 17:18:07,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 108. [2022-10-17 17:18:07,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 88 states have (on average 1.4545454545454546) internal successors, (128), 107 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:07,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 128 transitions. [2022-10-17 17:18:07,806 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 128 transitions. Word has length 17 [2022-10-17 17:18:07,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:07,807 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 128 transitions. [2022-10-17 17:18:07,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:07,807 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 128 transitions. [2022-10-17 17:18:07,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 17:18:07,807 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:07,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:07,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-10-17 17:18:07,808 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:07,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:07,812 INFO L85 PathProgramCache]: Analyzing trace with hash -403091939, now seen corresponding path program 1 times [2022-10-17 17:18:07,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:07,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011809788] [2022-10-17 17:18:07,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:07,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:08,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:08,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011809788] [2022-10-17 17:18:08,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011809788] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:08,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:08,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 17:18:08,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862043467] [2022-10-17 17:18:08,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:08,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:18:08,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:08,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:18:08,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:18:08,091 INFO L87 Difference]: Start difference. First operand 108 states and 128 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:08,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:08,360 INFO L93 Difference]: Finished difference Result 128 states and 143 transitions. [2022-10-17 17:18:08,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 17:18:08,360 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-10-17 17:18:08,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:08,361 INFO L225 Difference]: With dead ends: 128 [2022-10-17 17:18:08,362 INFO L226 Difference]: Without dead ends: 128 [2022-10-17 17:18:08,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-10-17 17:18:08,362 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 179 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:08,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 186 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:18:08,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-10-17 17:18:08,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 112. [2022-10-17 17:18:08,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 92 states have (on average 1.4456521739130435) internal successors, (133), 111 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:08,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 133 transitions. [2022-10-17 17:18:08,366 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 133 transitions. Word has length 17 [2022-10-17 17:18:08,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:08,367 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 133 transitions. [2022-10-17 17:18:08,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:08,367 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 133 transitions. [2022-10-17 17:18:08,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 17:18:08,367 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:08,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:08,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-10-17 17:18:08,368 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:08,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:08,368 INFO L85 PathProgramCache]: Analyzing trace with hash -403091938, now seen corresponding path program 1 times [2022-10-17 17:18:08,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:08,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161126049] [2022-10-17 17:18:08,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:08,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:08,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:08,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161126049] [2022-10-17 17:18:08,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161126049] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:08,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:08,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:18:08,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217884348] [2022-10-17 17:18:08,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:08,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 17:18:08,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:08,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 17:18:08,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:18:08,697 INFO L87 Difference]: Start difference. First operand 112 states and 133 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:08,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:08,920 INFO L93 Difference]: Finished difference Result 139 states and 152 transitions. [2022-10-17 17:18:08,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 17:18:08,921 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-10-17 17:18:08,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:08,922 INFO L225 Difference]: With dead ends: 139 [2022-10-17 17:18:08,922 INFO L226 Difference]: Without dead ends: 139 [2022-10-17 17:18:08,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-10-17 17:18:08,923 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 164 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:08,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 150 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:18:08,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-10-17 17:18:08,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 112. [2022-10-17 17:18:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 92 states have (on average 1.434782608695652) internal successors, (132), 111 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) [2022-10-17 17:18:08,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 132 transitions. [2022-10-17 17:18:08,927 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 132 transitions. Word has length 17 [2022-10-17 17:18:08,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:08,927 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 132 transitions. [2022-10-17 17:18:08,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:08,927 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 132 transitions. [2022-10-17 17:18:08,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 17:18:08,928 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:08,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:08,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-10-17 17:18:08,929 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:08,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:08,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1693608402, now seen corresponding path program 1 times [2022-10-17 17:18:08,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:08,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418498028] [2022-10-17 17:18:08,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:08,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:09,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:09,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:09,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418498028] [2022-10-17 17:18:09,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418498028] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:09,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:09,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 17:18:09,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085905742] [2022-10-17 17:18:09,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:09,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:18:09,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:09,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:18:09,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:18:09,132 INFO L87 Difference]: Start difference. First operand 112 states and 132 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:09,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:09,322 INFO L93 Difference]: Finished difference Result 126 states and 139 transitions. [2022-10-17 17:18:09,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 17:18:09,323 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2022-10-17 17:18:09,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:09,324 INFO L225 Difference]: With dead ends: 126 [2022-10-17 17:18:09,324 INFO L226 Difference]: Without dead ends: 122 [2022-10-17 17:18:09,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-10-17 17:18:09,325 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 129 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:09,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 199 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:18:09,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-10-17 17:18:09,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 110. [2022-10-17 17:18:09,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 90 states have (on average 1.4333333333333333) internal successors, (129), 109 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:09,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 129 transitions. [2022-10-17 17:18:09,329 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 129 transitions. Word has length 18 [2022-10-17 17:18:09,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:09,329 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 129 transitions. [2022-10-17 17:18:09,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:09,330 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 129 transitions. [2022-10-17 17:18:09,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 17:18:09,333 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:09,333 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:09,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-10-17 17:18:09,333 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:09,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:09,334 INFO L85 PathProgramCache]: Analyzing trace with hash 303022428, now seen corresponding path program 1 times [2022-10-17 17:18:09,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:09,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684555810] [2022-10-17 17:18:09,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:09,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:09,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:09,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684555810] [2022-10-17 17:18:09,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684555810] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:18:09,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882639763] [2022-10-17 17:18:09,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:09,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:18:09,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:18:09,632 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:18:09,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:18:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:09,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-17 17:18:09,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:18:09,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:18:09,965 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-17 17:18:09,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-17 17:18:10,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 17:18:10,087 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-10-17 17:18:10,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 28 [2022-10-17 17:18:10,123 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-10-17 17:18:10,123 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 28 [2022-10-17 17:18:10,187 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-10-17 17:18:10,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-10-17 17:18:10,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-10-17 17:18:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:10,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:18:10,243 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_451 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_451) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2022-10-17 17:18:10,298 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_451 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_451) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2022-10-17 17:18:10,309 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:18:10,309 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2022-10-17 17:18:10,319 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:18:10,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 36 [2022-10-17 17:18:10,338 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-10-17 17:18:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-10-17 17:18:10,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882639763] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:18:10,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2112850299] [2022-10-17 17:18:10,530 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-10-17 17:18:10,530 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:18:10,534 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:18:10,540 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:18:10,540 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:18:10,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:10,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:10,593 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-10-17 17:18:10,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:10,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-10-17 17:18:10,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 17:18:10,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 17:18:10,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:10,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-10-17 17:18:10,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:10,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-10-17 17:18:10,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:10,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-10-17 17:18:10,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:10,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:10,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:10,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:10,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:10,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2022-10-17 17:18:10,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-10-17 17:18:10,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:10,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-10-17 17:18:10,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-10-17 17:18:11,016 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-10-17 17:18:11,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 47 [2022-10-17 17:18:11,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-10-17 17:18:11,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-10-17 17:18:11,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,109 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 24 [2022-10-17 17:18:11,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,128 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-10-17 17:18:11,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-10-17 17:18:11,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2022-10-17 17:18:11,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-10-17 17:18:11,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-10-17 17:18:11,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-10-17 17:18:11,438 INFO L356 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2022-10-17 17:18:11,439 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 199 treesize of output 120 [2022-10-17 17:18:11,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2022-10-17 17:18:11,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-10-17 17:18:11,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:11,645 INFO L356 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-10-17 17:18:11,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 459 treesize of output 364 [2022-10-17 17:18:11,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,667 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:11,675 INFO L356 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-10-17 17:18:11,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 459 treesize of output 437 [2022-10-17 17:18:11,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:11,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:11,745 INFO L356 Elim1Store]: treesize reduction 66, result has 30.5 percent of original size [2022-10-17 17:18:11,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 453 treesize of output 455 [2022-10-17 17:18:11,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:12,114 INFO L356 Elim1Store]: treesize reduction 278, result has 12.0 percent of original size [2022-10-17 17:18:12,115 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 461 treesize of output 468 [2022-10-17 17:18:12,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:12,395 INFO L356 Elim1Store]: treesize reduction 68, result has 28.4 percent of original size [2022-10-17 17:18:12,396 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 555 treesize of output 440 [2022-10-17 17:18:12,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:12,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:12,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:12,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:12,447 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:12,539 INFO L356 Elim1Store]: treesize reduction 170, result has 17.1 percent of original size [2022-10-17 17:18:12,539 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 504 treesize of output 490 [2022-10-17 17:18:12,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:12,614 INFO L356 Elim1Store]: treesize reduction 100, result has 16.0 percent of original size [2022-10-17 17:18:12,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 491 treesize of output 477 [2022-10-17 17:18:13,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:13,258 INFO L356 Elim1Store]: treesize reduction 176, result has 15.8 percent of original size [2022-10-17 17:18:13,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 812 treesize of output 506 [2022-10-17 17:18:13,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:13,416 INFO L356 Elim1Store]: treesize reduction 188, result has 17.9 percent of original size [2022-10-17 17:18:13,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 823 treesize of output 721 [2022-10-17 17:18:13,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:13,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:13,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:13,590 INFO L356 Elim1Store]: treesize reduction 424, result has 12.9 percent of original size [2022-10-17 17:18:13,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 760 treesize of output 741 [2022-10-17 17:18:13,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-10-17 17:18:13,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-17 17:18:13,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-10-17 17:18:13,877 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-17 17:18:13,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-10-17 17:18:13,899 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-17 17:18:13,900 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-10-17 17:18:13,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 17:18:13,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-10-17 17:18:13,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 17:18:14,084 INFO L356 Elim1Store]: treesize reduction 44, result has 41.3 percent of original size [2022-10-17 17:18:14,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 195 treesize of output 173 [2022-10-17 17:18:14,162 INFO L356 Elim1Store]: treesize reduction 60, result has 39.4 percent of original size [2022-10-17 17:18:14,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 151 treesize of output 162 [2022-10-17 17:18:14,226 INFO L356 Elim1Store]: treesize reduction 44, result has 41.3 percent of original size [2022-10-17 17:18:14,227 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 135 treesize of output 145 [2022-10-17 17:18:14,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-10-17 17:18:14,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-10-17 17:18:14,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-17 17:18:14,501 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-10-17 17:18:14,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-17 17:18:14,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-10-17 17:18:14,560 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-17 17:18:14,561 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-10-17 17:18:14,584 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-17 17:18:14,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-10-17 17:18:14,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 17:18:14,617 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-10-17 17:18:14,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 17:18:14,631 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:18:15,330 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4303#(and (= |ULTIMATE.start_main_~state~0#1| 1) (<= (+ |ULTIMATE.start_main_~head~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~head~0#1.base|)) (= |ULTIMATE.start_main_~x~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_~x~0#1.base_85| Int) (|v_ULTIMATE.start_main_~x~0#1.offset_71| Int)) (and (<= (+ 8 |v_ULTIMATE.start_main_~x~0#1.offset_71|) (select |#length| |v_ULTIMATE.start_main_~x~0#1.base_85|)) (= (select |#valid| |v_ULTIMATE.start_main_~x~0#1.base_85|) 1) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~x~0#1.base_85|) (+ 4 |v_ULTIMATE.start_main_~x~0#1.offset_71|)) |ULTIMATE.start_main_~state~0#1|) (<= 0 |v_ULTIMATE.start_main_~x~0#1.offset_71|))) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) |ULTIMATE.start_main_~x~0#1.offset|) (= |ULTIMATE.start_main_~x~0#1.base| 0) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~head~0#1.base|) 1) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:18:15,330 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:18:15,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:18:15,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2022-10-17 17:18:15,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504049088] [2022-10-17 17:18:15,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:18:15,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-17 17:18:15,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:15,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-17 17:18:15,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=827, Unknown=2, NotChecked=118, Total=1056 [2022-10-17 17:18:15,333 INFO L87 Difference]: Start difference. First operand 110 states and 129 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:16,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:16,145 INFO L93 Difference]: Finished difference Result 212 states and 233 transitions. [2022-10-17 17:18:16,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 17:18:16,146 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 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 18 [2022-10-17 17:18:16,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:16,148 INFO L225 Difference]: With dead ends: 212 [2022-10-17 17:18:16,148 INFO L226 Difference]: Without dead ends: 212 [2022-10-17 17:18:16,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=213, Invalid=1353, Unknown=2, NotChecked=154, Total=1722 [2022-10-17 17:18:16,150 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 334 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 333 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:16,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 492 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 641 Invalid, 0 Unknown, 333 Unchecked, 0.5s Time] [2022-10-17 17:18:16,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-10-17 17:18:16,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 128. [2022-10-17 17:18:16,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 108 states have (on average 1.3888888888888888) internal successors, (150), 127 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2022-10-17 17:18:16,158 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 18 [2022-10-17 17:18:16,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:16,158 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2022-10-17 17:18:16,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:16,159 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2022-10-17 17:18:16,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 17:18:16,159 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:16,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:16,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:18:16,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:18:16,380 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:16,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:16,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1031178538, now seen corresponding path program 1 times [2022-10-17 17:18:16,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:16,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968163364] [2022-10-17 17:18:16,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:16,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:16,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:16,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:16,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968163364] [2022-10-17 17:18:16,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968163364] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:16,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:16,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 17:18:16,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074500348] [2022-10-17 17:18:16,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:16,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 17:18:16,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:16,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 17:18:16,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-10-17 17:18:16,778 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:17,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:17,093 INFO L93 Difference]: Finished difference Result 130 states and 142 transitions. [2022-10-17 17:18:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 17:18:17,093 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-10-17 17:18:17,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:17,094 INFO L225 Difference]: With dead ends: 130 [2022-10-17 17:18:17,094 INFO L226 Difference]: Without dead ends: 127 [2022-10-17 17:18:17,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-10-17 17:18:17,095 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 118 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 293 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 [2022-10-17 17:18:17,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 293 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:18:17,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-10-17 17:18:17,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 115. [2022-10-17 17:18:17,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 95 states have (on average 1.4) internal successors, (133), 114 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:17,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 133 transitions. [2022-10-17 17:18:17,099 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 133 transitions. Word has length 19 [2022-10-17 17:18:17,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:17,099 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 133 transitions. [2022-10-17 17:18:17,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:17,099 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 133 transitions. [2022-10-17 17:18:17,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 17:18:17,100 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:17,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:17,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-10-17 17:18:17,100 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-17 17:18:17,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:17,101 INFO L85 PathProgramCache]: Analyzing trace with hash -824217396, now seen corresponding path program 1 times [2022-10-17 17:18:17,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:17,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378380572] [2022-10-17 17:18:17,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:17,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:18:17,117 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:18:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:18:17,157 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-10-17 17:18:17,157 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 17:18:17,158 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (45 of 46 remaining) [2022-10-17 17:18:17,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 46 remaining) [2022-10-17 17:18:17,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 46 remaining) [2022-10-17 17:18:17,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 46 remaining) [2022-10-17 17:18:17,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 46 remaining) [2022-10-17 17:18:17,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 46 remaining) [2022-10-17 17:18:17,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 46 remaining) [2022-10-17 17:18:17,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 46 remaining) [2022-10-17 17:18:17,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 46 remaining) [2022-10-17 17:18:17,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 46 remaining) [2022-10-17 17:18:17,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 46 remaining) [2022-10-17 17:18:17,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 46 remaining) [2022-10-17 17:18:17,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 46 remaining) [2022-10-17 17:18:17,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (32 of 46 remaining) [2022-10-17 17:18:17,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 46 remaining) [2022-10-17 17:18:17,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 46 remaining) [2022-10-17 17:18:17,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 46 remaining) [2022-10-17 17:18:17,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 46 remaining) [2022-10-17 17:18:17,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK (27 of 46 remaining) [2022-10-17 17:18:17,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 46 remaining) [2022-10-17 17:18:17,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 46 remaining) [2022-10-17 17:18:17,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 46 remaining) [2022-10-17 17:18:17,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 46 remaining) [2022-10-17 17:18:17,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 46 remaining) [2022-10-17 17:18:17,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 46 remaining) [2022-10-17 17:18:17,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 46 remaining) [2022-10-17 17:18:17,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 46 remaining) [2022-10-17 17:18:17,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 46 remaining) [2022-10-17 17:18:17,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 46 remaining) [2022-10-17 17:18:17,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 46 remaining) [2022-10-17 17:18:17,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 46 remaining) [2022-10-17 17:18:17,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 46 remaining) [2022-10-17 17:18:17,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 46 remaining) [2022-10-17 17:18:17,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 46 remaining) [2022-10-17 17:18:17,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 46 remaining) [2022-10-17 17:18:17,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 46 remaining) [2022-10-17 17:18:17,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 46 remaining) [2022-10-17 17:18:17,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 46 remaining) [2022-10-17 17:18:17,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 46 remaining) [2022-10-17 17:18:17,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE (6 of 46 remaining) [2022-10-17 17:18:17,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE (5 of 46 remaining) [2022-10-17 17:18:17,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE (4 of 46 remaining) [2022-10-17 17:18:17,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE (3 of 46 remaining) [2022-10-17 17:18:17,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE (2 of 46 remaining) [2022-10-17 17:18:17,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE (1 of 46 remaining) [2022-10-17 17:18:17,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK (0 of 46 remaining) [2022-10-17 17:18:17,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-10-17 17:18:17,170 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:17,175 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:18:17,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:18:17 BoogieIcfgContainer [2022-10-17 17:18:17,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:18:17,206 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:18:17,206 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:18:17,206 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:18:17,207 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:18:00" (3/4) ... [2022-10-17 17:18:17,209 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 17:18:17,250 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/witness.graphml [2022-10-17 17:18:17,250 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:18:17,250 INFO L158 Benchmark]: Toolchain (without parser) took 18369.54ms. Allocated memory was 109.1MB in the beginning and 276.8MB in the end (delta: 167.8MB). Free memory was 73.9MB in the beginning and 88.1MB in the end (delta: -14.2MB). Peak memory consumption was 151.7MB. Max. memory is 16.1GB. [2022-10-17 17:18:17,251 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 109.1MB. Free memory is still 60.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:18:17,251 INFO L158 Benchmark]: CACSL2BoogieTranslator took 542.44ms. Allocated memory is still 109.1MB. Free memory was 73.7MB in the beginning and 74.9MB in the end (delta: -1.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-10-17 17:18:17,251 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.92ms. Allocated memory is still 109.1MB. Free memory was 74.9MB in the beginning and 72.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:18:17,252 INFO L158 Benchmark]: Boogie Preprocessor took 70.81ms. Allocated memory is still 109.1MB. Free memory was 72.8MB in the beginning and 71.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:18:17,252 INFO L158 Benchmark]: RCFGBuilder took 825.15ms. Allocated memory was 109.1MB in the beginning and 144.7MB in the end (delta: 35.7MB). Free memory was 71.1MB in the beginning and 116.9MB in the end (delta: -45.8MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-10-17 17:18:17,252 INFO L158 Benchmark]: TraceAbstraction took 16787.95ms. Allocated memory was 144.7MB in the beginning and 276.8MB in the end (delta: 132.1MB). Free memory was 116.2MB in the beginning and 90.2MB in the end (delta: 26.0MB). Peak memory consumption was 157.5MB. Max. memory is 16.1GB. [2022-10-17 17:18:17,253 INFO L158 Benchmark]: Witness Printer took 43.73ms. Allocated memory is still 276.8MB. Free memory was 90.2MB in the beginning and 88.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:18:17,255 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 109.1MB. Free memory is still 60.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 542.44ms. Allocated memory is still 109.1MB. Free memory was 73.7MB in the beginning and 74.9MB in the end (delta: -1.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.92ms. Allocated memory is still 109.1MB. Free memory was 74.9MB in the beginning and 72.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.81ms. Allocated memory is still 109.1MB. Free memory was 72.8MB in the beginning and 71.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 825.15ms. Allocated memory was 109.1MB in the beginning and 144.7MB in the end (delta: 35.7MB). Free memory was 71.1MB in the beginning and 116.9MB in the end (delta: -45.8MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * TraceAbstraction took 16787.95ms. Allocated memory was 144.7MB in the beginning and 276.8MB in the end (delta: 132.1MB). Free memory was 116.2MB in the beginning and 90.2MB in the end (delta: 26.0MB). Peak memory consumption was 157.5MB. Max. memory is 16.1GB. * Witness Printer took 43.73ms. Allocated memory is still 276.8MB. Free memory was 90.2MB in the beginning and 88.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - CounterExampleResult [Line: 1032]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L996] SLL* head = malloc(sizeof(SLL)); [L997] head->next = head VAL [head={-1:0}] [L998] head->data = 0 [L1000] SLL* x = head; [L1001] int state = 1; VAL [head={-1:0}, state=1, x={-1:0}] [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1025] x->data = state VAL [head={-1:0}, state=1, x={-1:0}] [L1027] EXPR head->next [L1027] x = head->next [L1028] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, state=1, x={-1:0}] [L1030] EXPR x->data VAL [head={-1:0}, state=1, x={-1:0}, x->data=1] [L1030] COND TRUE x->data != 0 [L1032] EXPR x->next VAL [head={-1:0}, state=1, x={-1:0}, x->next={-1:0}] [L1032] EXPR x->next->data [L1032] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, state=1, x={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1032] EXPR x->data VAL [head={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1032] EXPR x->next VAL [head={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1032] EXPR x->next->data [L1032] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=0] [L1032] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1032] reach_error() VAL [head={-1:0}, state=1, x={-1:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 993]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 90 locations, 46 error locations. Started 1 CEGAR loops. OverallTime: 16.7s, OverallIterations: 22, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2935 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2935 mSDsluCounter, 3484 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 333 IncrementalHoareTripleChecker+Unchecked, 2621 mSDsCounter, 427 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3499 IncrementalHoareTripleChecker+Invalid, 4259 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 427 mSolverCounterUnsat, 931 mSDtfsCounter, 3499 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 178 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=20, InterpolantAutomatonStates: 156, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 528 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 289 NumberOfCodeBlocks, 289 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 265 ConstructedInterpolants, 11 QuantifiedInterpolants, 3394 SizeOfPredicates, 5 NumberOfNonLiveVariables, 182 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 23 InterpolantComputations, 20 PerfectInterpolantSequences, 1/7 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 RESULT: Ultimate proved your program to be incorrect! [2022-10-17 17:18:17,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3492421f-22bb-412d-89db-bcbea16193f5/bin/utaipan-G1rejxKTta/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)